Entries |
Document | Title | Date |
20080206120 | Method For Purifying Waste Gases of a Glass Melting Process, Particularly For Glasses For Lcd Display - The invention relates to a method for purifying waste gases of a glass melting process during which SiO | 08-28-2008 |
20080213149 | Process for producing steam and/or power from oil residues - Power is produced using fuel from raw and/or preprocessed oil residues which are burned alone, without any addition of sorbents, diluents or the like, to generate high pressure steam and/or power and residual emissions. Residual emissions are cleaned to simultaneously remove PM, NO | 09-04-2008 |
20080233026 | Method and system for NOx removal - A method and system for removing pollutants from a flue gas stream ( | 09-25-2008 |
20080247928 | Method of Removing Nitrous Oxide - Hydroxylamine is formed in a reactor through a partial hydrogenation of nitric oxide gas (NO) with hydrogen gas (H | 10-09-2008 |
20080247929 | HIGH ACTIVITY TITANIA SUPPORTED METAL OXIDE DeNOx CATALYSTS - The present invention is directed to high activity titanium oxide DeNOx catalysts. In preferred embodinents, by depositing vanadium oxide on a titania supported metal oxide such as tungsten oxide, an improved catalyst may be generated. This catalyst may be used in the treatment of exhaust from sources such as automobiles and industrial plants. | 10-09-2008 |
20080279740 | DeNOx catalyst preparation method - A catalyst comprising iron and a titanium-zirconium mixed oxide gel, and a process for preparing the catalyst are disclosed. The process comprises combining an iron compound and a titanium-zirconium mixed oxide gel in water to form an iron-titanium-zirconium mixed oxide, and then removing water to produce the catalyst. The catalyst is particularly effective for DeNO | 11-13-2008 |
20080317652 | Emission control system internal to a boiler - This invention is an emission control system wherein the boiler hosts a reactor which contains one or more catalysts for the purpose of reducing NO | 12-25-2008 |
20090004082 | Method of Denitration of Exhaust Gas and Apparatus Therefor - A method of exhaust gas denitration in which nitrogen oxides contained in a low-temperature exhaust gas are removed at a high NO | 01-01-2009 |
20090022641 | MULTILAYERED CATALYST COMPOSITIONS - A layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Methods of making and using the same are also provided. In one or more embodiments, the catalyst comprises three layers of catalytic material in conjunction with a carrier. A first layer comprises a platinum component on a first support; a second layer comprises a rhodium component on a second support; and a third layer comprises a palladium component and a third support. The palladium, rhodium, and/or platinum can independently be deposited on a support of high surface area refractory metal oxide, or of an oxygen storage component, or both. | 01-22-2009 |
20090028768 | BIFUNCTIONAL ACTIVE SITES FOR ADSORPTION OF NOx - Immobilized nitronyl nitroxide active sites on the surface of a porous inorganic oxide support act as efficient and rapid oxidants for NO, reacting with >99% of the NO under flow conditions through a packed bed; and, in a parallel configuration with nitroxyl radical active sites, act to remove >99% of both NO and NO | 01-29-2009 |
20090035200 | LOW-TEMPERATURE, MOVING BED CATALYTIC REACTOR FOR CONTROL OF NOx EMISSIONS FROM COMBUSTION - An apparatus for low-temperature NO | 02-05-2009 |
20090053122 | Process for Denitration of Exhaust Gas - A denitration process for removing nitrogen oxides contained in low-temperature exhaust gas at a high denitration rate; namely, a denitration process for reductively removing nitrogen oxides contained in an exhaust gas (x) containing nitrogen monoxide and sulfur dioxide. The process comprises a preliminary step | 02-26-2009 |
20090060810 | Preparation Method of Vanadium/Titania-Based Catalyst Showing Excellent Nitrogen Oxide-Removal Performance at Wide Temperature Winow Through Introduction of Ball Milling, and Use Thereof - Disclosed are a method for preparing a catalyst, which has excellent nitrogen oxide-removal performance and resistance over a wide temperature range, and the use of the catalyst. According to the disclosed method, the oxidation number and surface defects of the catalyst are changed by applying artificial high energy through mechanical ball milling during the preparation process of the catalyst, instead of applying the addition of a precious metal, the deformation of a support and the use of a co-catalyst in order to increase NOx removal activity, such that activation energy for inducing redox reactions can be decreased. | 03-05-2009 |
20090081097 | Heat-treated active carbons for use in denitration, processes for producing same, denitration method using same, and denitration system using same - This invention relates to a technique for removing nitrogen oxides (NO | 03-26-2009 |
20090130010 | CATALYST FO THE DECOMPOSITION OF N2O IN THE OSTWALD - A catalyst for the decomposition of N | 05-21-2009 |
20090130011 | Systems and Methods for Removing Materials From Flue Gas Via Regenerative Selective Catalytic Reduction - Regenerative selective catalytic reduction (RSCR) systems and processes are provided whereby NO | 05-21-2009 |
20090136403 | DECOMPOSITION OF DINITROGEN MONOXIDE IN OXYGEN-CONTAINING GASES HAVING A MOISTURE CONTENT - Palladium on aluminium oxide carrier is very well-suited for decomposing dinitrogen monoxide-contained, e.g., in anaesthetic gases—in oxygen-containing gases having a moisture content of 5-20% H | 05-28-2009 |
20090142242 | Vanadium/Titania Catalyst Comprising Natural Manganese Ore for Removing Nitrogen Oxides and Dioxin in Wide Operating Temperature Range and Method of Using the Same - Disclosed is a vanadium/titania-based catalyst including natural manganese ore for removing nitrogen oxides and dioxin in a wide operating temperature range and a method of using the same. Specifically, this invention pertains to a vanadium/titania (V/TiO2)-based catalyst including natural manganese ore for removing nitrogen oxides and dioxin in a wide operating temperature range, in which the WTiO2 catalyst for selective catalytic reduction of nitrogen oxides and removal of dioxin contained in flue gas includes 5-30 wt % of natural manganese ore, thus exhibiting excellent activity of removing nitrogen oxides even in the low temperature range and of removing dioxin at the same time, and to a method of using the same. The catalyst of this invention has good thermal stability and thus can simultaneously manifest nitrogen oxides removal performance and dioxin removal performance superior to conventional vanadium/titania catalysts in a wide temperature range (150˜450° C.) including not only a high temperature range but also a low temperature range. As well, since unreacted ammonia emissions can be reduced, the formation of an ammonium salt is prevented and ammonium nitrate is decomposed at low temperatures, thus solving the problems of inactivation of the catalyst due to catalytic poisoning and of a shortened lifetime thereof, leading to economic benefits. | 06-04-2009 |
20090142243 | Methods and systems for reducing the emissions from combustion gases - A method for reducing the emissions from combustion gases produced during a combustion process includes injecting a hydrocarbon-based reducing agent into the combustion gases to form a combustion gas mixture. The combustion gas mixture including oxides of nitrogen, NO | 06-04-2009 |
20090155151 | Methods and Systems Including CO Oxidation Catalyst With Low NO to NO2 Conversion - Catalysts, catalyst systems, and methods for removing ammonia and/or carbon monoxide in flue gases are provided where ammonia is used with a selective catalytic reduction catalyst for reducing oxides of nitrogen. An oxidation catalyst is utilized, which comprises particulate platinum or platinum/palladium dispersed on zirconia particles, the particulate platinum or platinum/palladium having an average particle size less than about 10 nm. The catalyst is effective to convert less than 20% of NO to NO | 06-18-2009 |
20090155152 | NITROGEN OXIDE-REDUCING CATALYST AND METHOD FOR REDUCING NITROGEN OXIDE - A first catalyst for reducing nitrogen oxides comprising a crystalline silicate containing an iron in β-framework structure wherein a SiO | 06-18-2009 |
20090155153 | METHOD FOR CALCULATING LOADING AMOUNT OF AMMONIA IN SELECTIVE CATALYTIC REDUCTION APPARATUS - The present invention relates to a method for calculating loading amount of ammonia in a selective catalytic reduction apparatus, which may include: detecting a change amount of temperature in the selective catalytic reduction apparatus; determining whether the change amount of temperature in the selective catalytic reduction apparatus increases; calculating a loading modification amount of ammonia according to the change amount of temperature if the change amount of temperature in the selective catalytic reduction apparatus increases; calculating a loading change amount of ammonia based on the calculated loading modification amount of ammonia; calculating a current loading amount of ammonia based on the calculated loading change amount of ammonia; and dosing the current loading amount of ammonia into the selective catalytic reduction apparatus. | 06-18-2009 |
20090191108 | Zirconium/Praseodymium Oxide NOx Traps and Prufication of Gases Containing Nitrogen Oxides (NOx) Therewith - A method for treating/purification a gas containing nitrogen oxides (NOx) includes conveying same through a NOx trap containing a composition based on a catalyst for oxidizing NOx into NO | 07-30-2009 |
20090196811 | NOx REDUCTION CATALYST, NOx REDUCTION CATALYST SYSTEM, AND NOx REDUCTION METHOD - A NOx reduction catalyst is provided which reduces NOx in processing gas. The NOx reduction catalyst includes a catalyst substrate containing an oxide, a NOx absorption component, and a NOx purification component. | 08-06-2009 |
20090196812 | Catalysts, Systems and Methods Utilizing Non-Zeolitic Metal-Containing Molecular Sieves Having the CHA Crystal Structure - Catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, methods for preparing such catalysts, and systems and methods for treating exhaust gas incorporating such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures. | 08-06-2009 |
20090208396 | Alumina-Based Perovskite Catalysts and Catalyst Supports - An alumina-based perovskite is formed by mixing a lanthanide source with a transitional alumina to form a dual-phase composition comprising in situ formed LnAlO | 08-20-2009 |
20090220401 | EXHAUST SMOKE DENITRATING APPARATUS AND METHOD OF EXHAUST SMOKE DENITRATION - An exhaust smoke denitrating apparatus in which using an NH | 09-03-2009 |
20090232718 | MULTI-STAGE CATALYTIC AIR PURIFICATION SYSTEM - Apparatus and methods for the production of a secure supply of breathable air are important under conditions where threats from chemical and biological weapons may be present. A method and a multi-stage CATOX system for producing a purified air flow from ambient air which may have nitrogen containing toxicants is provided. The multi-stage CATOX system has a first stage and second stage, at least one of the first or the second stage has a first catalytic heat exchanger with a cold side supporting a first catalyst and a hot side configured to transfer heat therefrom to the first catalyst. | 09-17-2009 |
20090246109 | SOLID SOLUTIONS AND METHODS OF MAKING THE SAME - A composite single phase crystalline mixed metal oxide NOx scavenger formed of a solid solution, wherein the solid solution has a well defined single phase crystalline structure, as determined by conventional x-ray Diffraction method; and, a NOx scavenger disposed within the single phase oxide structure, without formation of additional X-ray discrete phase, wherein the NOx scavenger is formed from oxides of an element selected from the group consisting of alkali metals, alkaline earth metals, transition metals, rare earth metals and mixtures thereof. The aforementioned single phase oxide may further posses a cubic fluorite structure and said composite cubic oxide NOx scavenger may be advantageously applied to the control of emissions, of both gaseous and solid or particulate nature, from internal combustions especially engines operating under the principle of compression ignition. | 10-01-2009 |
20090246110 | Activated Carbon Catalyst - An activated carbon catalyst is described which is sufficiently active in the presence of catalytic poisons in crude gas to convert nitrogen oxides to nitrogen in the presence of ammonia. | 10-01-2009 |
20090246111 | EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PRODUCTION THEREOF - The invention realizes a catalyst which is hardly deteriorated even when volatile catalyst-poisoning compounds such as P and As are accumulated and which can reduce the rate of oxidation of SO | 10-01-2009 |
20090263303 | Purification Device and Method for Purifying a Fluid Stream - A fibrous catalytic filter can be used for treating a fluid stream containing particulate matter. The fluid stream is contacted with fibers comprising a catalytic composition. The particulate matter deposits on the fibers and undesirable species within the fluid stream are converted into more desirable species via the catalytic action of the fibers. | 10-22-2009 |
20090274601 | Method of reducing nitrogen oxides in a gas stream with vaporized ammonia - The present invention is a method for selective reduction of nitrogen oxides in a gas stream with ammonia wherein the ammonia is vaporized prior to contacting it with the carrying fluid. The present invention also comprises a reducing agent dispersion system for use in substantially uniformly mixing a reducing agent with nitrogen oxides in a flue gas stream comprising a header and a plurality of lances. Further, the present invention comprises a novel reactor design for use in selective reduction of nitrogen oxides in a gas stream. | 11-05-2009 |
20090274602 | Nonwoven Composites and Related Products and Methods - The present invention in certain embodiments is directed to a catalytic substrate suitable for use in a number of applications, including as a substrate in a catalytic converter or a particulate filter. Another aspect of the present invention is a filtering substrate suitable for use in a number of applications, including as a substrate in a particulate filter, such as a diesel particulate filter (DPF), or diesel particulate trap (DPT). The invention also provides an improved substrate for removing and/or eliminating pollutants from the exhaust of combustion engines. The catalytic substrate and filtering substrate provide, in certain embodiments, improvements in removing pollutants from an exhaust gas. The improvements include one or more of the following: faster light-off period, depth filtration of PM, less backpressure, lower probability of clogging, ability to be placed in multiple locations in the exhaust system including the manifold or the head itself, high probability of catalytic reaction, high conversion ratios of NOx, HC, and CO, a faster burnoff of PM, minimization of catalyst material use, and the like. | 11-05-2009 |
20090280047 | Solid ammonia storage and delivery material - A solid ammonia storage and delivery material A solid ammonia storage material comprising: an ammonia absorbing salt, wherein the ammonia absorbing salt is an ionic salt of the general formula: M | 11-12-2009 |
20090285740 | CATALYTIC PROCESS FOR CONTROL OF NOx EMISSIONS USING HYDROGEN - A selective catalytic reduction process with a palladium catalyst for reducing NO | 11-19-2009 |
20090285741 | ALKALI RESISTANT CATALYST - The present invention concerns the selective removal of nitrogen oxides (NOx) from gasses. In particular, the invention concerns a process, a catalyst and the use of a catalyst for the selective removal of nitrogen oxides in the presence of ammonia from gases containing a significant amount of alkali metal and/or alkali-earth compounds which process comprises using a catalyst combined of (i) a formed porous superacidic support, said superacidic support having an Hammett acidity stronger than Ho=−12, and (ii) a metal oxide catalytic component deposited on said superacidic support selected from the group consisting of oxides of Fe, Cu, V, Cr, Mn, and any mixtures thereof. | 11-19-2009 |
20090297416 | ALUMINA-BASED NITROGEN OXIDE (NOx) TRAPPING COMPOSITIONS AND TREATMENT OF VEHICULAR EXHAUST GASES THEREWITH - Thermally stable, solid alumina-based compositions useful for the trapping of nitrogen oxides that are contained in gaseous fluids, notably in vehicular exhaust gases, are formed of alumina, cerium and a divalent metal M selected from among barium, strontium or an association of these two elements and which include at least 10% of the weight of element M expressed by weight of oxide in contrast to the total weight of the composition and also wherein the aluminate compound of the metal element M, i.e., MAl | 12-03-2009 |
20090297417 | SELECTIVE CATALYTIC NOx REDUCTION PROCESS AND APPARATUS PROVIDING IMPROVED GASSIFICATION OF UREA TO FORM AMMONIA-CONTAINING GAS - Disclosed are methods and apparatus enabling the efficient utilization of urea for purposes such as selective catalytic reduction (SCR) of NO | 12-03-2009 |
20090297418 | Composite Catalyst Materials And Method For The Selective Reduction Of Nitrogen Oxides - Composite catalyst materials that may be used to reduce nitrogen oxides to nitrogen gas in the presence of other gasses without significant poisoning of the composite catalyst materials or reaction with the other gasses. The composite catalyst materials are formed of a matrix material comprised of cerium oxide doped with alkaline earth metal oxides, rare earth metal oxides, and combinations thereof wherein the cerium oxide comprises more than 50 atomic percent of the matrix material, and nanoparticles comprising transition metal oxides wherein the transition metal oxides comprise less than 20 atomic percent of the composite catalyst material. The composite catalyst materials may further contain noble metals dispersed in the matrix material. | 12-03-2009 |
20090324472 | NANOCOMPOSITE PARTICLE AND PROCESS OF PREPARING THE SAME - A nanocomposite particle, its use as a catalyst, and a method of making it are disclosed. The nanocomposite particle comprises titanium dioxide nanoparticles, metal oxide nanoparticles, and a surface stabilizer. The metal oxide nanoparticles are formed hydrothermally in the presence of the titanium dioxide nanoparticles. The nanocomposite particle is an effective catalyst support, particularly for DeNO | 12-31-2009 |
20100008837 | METAL IONIC CATALYST COMPOSITION AND A PROCESS THEREOF - The present invention relates to a metal ionic catalyst composition for the catalytic conversion of industrial pollutants and the process of preparation of the same. The present invention also relates to a process of coating of the said catalyst composition on a cordierite honeycomb. | 01-14-2010 |
20100015022 | AQUEOUS SOLUTION FOR THE TREATMENT OF EXHAUST GASES OF DIESEL ENGINES - The present application relates to the use of a solution for the treatment of exhaust gases at the outlet of on-board or stationary diesel engines. It also relates to its use in any device for the treatment of these exhaust gases, regardless of whether the engines are engines of heavy goods vehicles or engines for light vehicles or also engines for stationary industrial engine applications. | 01-21-2010 |
20100028230 | DOSING AGENT INJECTION CONTROL FOR SELECTIVE CATALYTIC REDUCTION CATALYSTS - A dosing control system comprises a selective catalytic reduction (SCR) analysis module and a dosing management module. The SCR analysis module estimates ammonia (NH3) stored by an SCR catalyst, maximum NH3 storage capacity of the SCR catalyst, NH3 slip downstream of the SCR catalyst, NH3 oxidation, and NH3 conversion through reaction with nitrogen oxides (NOx). The NH3 stored is estimated based an amount of dosing agent injected, the NH3 slip, the NH3 oxidation, and the NH3 conversion. The dosing management module controls dosing agent injection into an exhaust system upstream of the SCR catalyst based on the NH3 stored by the SCR catalyst and the maximum NH3 storage capacity. | 02-04-2010 |
20100055014 | Selective Catalytic Reduction of NOx Enabled by Urea Decomposition Heat-Exchanger Bypass - Disclosed are a process and apparatus for selective catalytic reduction of NO | 03-04-2010 |
20100061906 | METHOD AND A DEVICE FOR REMOVING NITROGEN OXIDES AND SULPHUR TRIOXIDE FROM A PROCESS GAS - A catalytic reactor ( | 03-11-2010 |
20100061907 | Selective Catalytic NOx Reduction Process and Control System - Disclosed is a system which enables the efficient utilization of urea for selective catalytic reduction (SCR) of NO | 03-11-2010 |
20100068110 | Removal of Hg, NOx, and SOx With Using Oxidants and Staged Gas/Liquid Contact - A method of scrubbing mercury compounds and nitrogen oxides from a gas stream employing a scrubbing operation. The method involves the contact of the stream which contains mercury, SO | 03-18-2010 |
20100074817 | METHOD AND APPARATUS FOR TREATING DISCHARGE GAS - The following devices are successively disposed in the following order from an upstream side to a downstream side in an exhaust gas duct of a combustion apparatus: an air preheater, preheating combustion air for use in an exhaust gas treating apparatus; a heat recovery unit, recovering exhaust gas heat at an exit of the air preheater; a precipitator, collecting soot/dust contained in an exhaust gas at an exit of the heat recovery unit; a wet flue gas desulfurizer, removing sulfur oxides contained in the exhaust gas at the exit of the precipitator; and a reheater, heating the exhaust gas at the exit of the wet flue gas desulfurizer. Each of the heat recovery unit and the reheater has a heat exchanger tube, and a circulation line is disposed to connect the heat exchanger tubes. A sulfur trioxide (SO | 03-25-2010 |
20100074818 | AIR POLLUTION CONTROL APPARATUS AND AIR POLLUTION CONTROL METHOD - An air pollution control apparatus according to the present invention reduces nitrogen oxides and oxidizes mercury in flue gas | 03-25-2010 |
20100074819 | PROCESS FOR CATALYTIC DECOMPOSITION OF NITROGEN PROTOXIDE - A process for removing nitrogen protoxide from gas mixtures which contain it, comprising contacting with a catalyst which contains mixed oxides of copper, manganese and rare earth metals in an amount expressed as percentage by weight of CuO, MnO and rare earth metal oxide in the lowest state of valency of 20-45% CuO, 50-60% MnO, and 5-20% rare earth metal oxide. | 03-25-2010 |
20100080745 | MULTI-STAGE PROCESS FOR PURIFYING CARBON DIOXIDE AND PRODUCING ACID - Carbon dioxide is purified by processes employing NOx-rich sulfuric acid that can be formed by removal of SO | 04-01-2010 |
20100086457 | CATALYST AND METHOD OF MANUFACTURE - Disclosed herein is a catalyst composition comprising a bimetallic complex of silver and a second metal; the bimetallic complex being disposed upon a porous substrate; where the second metal is platinum, palladium, iron, cobalt, nickel, copper, cadmium or mercury and where atoms of silver and the second metal are bound by one or more bridging ligands. | 04-08-2010 |
20100086458 | METHOD AND ARCHITECTURE FOR OXIDIZING NITRIC OXIDE IN EXHAUST GAS FROM HYDROCARBON FUEL SOURCE WITH A FUEL LEAN COMBUSTION MIXTURE - An after-treatment system architecture and method for oxidizing the nitric oxide component of an exhaust stream from a hydrocarbon fueled power source operated with a fuel lean combustion mixture. | 04-08-2010 |
20100092360 | Catalyst Containing Platinum and Palladium for the Selective Reduction of NOx with Hydrogen (H2-SCR) - The invention relates to a novel catalyst having excellent activity and selectivity for reducing nitric oxides (NO/NO | 04-15-2010 |
20100098612 | METHOD AND ARCHITECTURE FOR REDUCING NOX AND PARTICULATE MATTER EMISSIONS IN EXHAUST GAS FROM HYDROCARBON FUEL SOURCE WITH A FUEL LEAN COMBUSTION MIXTURE - An exemplary method and associated architecture for reducing NO | 04-22-2010 |
20100104491 | Multilayered Catalyst Compositions - A layered three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Engine exhaust treatment system and methods of using the same are also provided. The catalytic material can be provided in layers such that a larger amount of oxygen storage component is provided in a downstream zone as compared to an upstream zone. For example, the upstream zone can be configured to have one, two, or three layers, and the downstream zone can be independently configured to have one, two, or three layers. In one or more embodiments, the catalyst supported on a carrier has three layers, where at least two of the layers are zoned to have an oxygen storage component being present in an upstream zone in an amount that is less than the oxygen storage component present in the downstream zone. | 04-29-2010 |
20100111793 | CATALYST, METHOD AND APPARATUS FOR REMOVING NITROGEN OXIDE - A catalyst having superior heat resistance and being capable of efficiently removing a nitrogen oxide, a removing method using the same, an apparatus including the catalyst described above, and the like are provided. A complex metal oxide containing tungsten, zirconium, and cerium has superior heat resistance and is capable of efficiently removing a nitrogen oxide in the presence of ammonia, the content of cerium oxide and the content of tungsten oxide being 10 to 30 percent by weight and 5 to 14 percent by weight, respectively. Hence, a catalyst which includes a complex metal oxide containing tungsten oxide, zirconium oxide, and cerium oxide, in which the content of the cerium oxide and the content of the tungsten oxide are 10 to 30 percent by weight and 5 to 14 percent by weight, respectively, is effectively used to remove a nitrogen oxide. | 05-06-2010 |
20100111794 | INTERNAL COMBUSTION ENGINE EXHAUST GAS PURIFICATION APPARATUS AND METHOD FOR CONTROLLING SAME - An internal combustion engine exhaust gas purification apparatus purifies exhaust gas using a NOx storage-reduction catalyst unit and a NOx selective reduction catalyst unit. The NOx selective reduction catalyst unit is provided downstream of the NOx storage-reduction catalyst unit in an exhaust gas passage. An urea injecting mechanism, for example an injection valve, injects urea into the exhaust gas passage. An urea injection controller prohibits urea injection from the urea injecting mechanism if at least one of the temperatures of the NOx storage-reduction catalyst unit and the NOx selective reduction catalyst unit is equal to or lower than a reference temperature. As such, production of cyanic acid is minimized, and therefore leaks of cyanic acid from the NOx storage-reduction catalyst unit and/or the NOx selective reduction catalyst unit can be suppressed. | 05-06-2010 |
20100111795 | MIXED OXIDES CATALYSTS - Mixed oxides catalysts usable in particular in the full oxidation to CO | 05-06-2010 |
20100119427 | PROCESS FOR REMOVING CONTAMINANTS FROM GAS STREAMS - The present invention provides for process for inhibiting the levels of nitrogen oxides in process gas streams from sulfuric acid regeneration and production plants. The process gas stream from the waste heat boiler and the candle mist eliminator is contacted with ozone which will react with nitrogen oxides present in the flue gas. | 05-13-2010 |
20100143226 | PROCESS FOR REMOVING NO AND N2O FROM GAS MIXTURES - A process is proposed for reprocessing the exhaust gas from a plant for producing hydroxylamine or hydroxylammonium salts by catalytic reduction of nitrogen monoxide with hydrogen for the purpose of utilization of at least a part of the nitrogen monoxide and if appropriate hydrogen present in the exhaust gas for producing hydroxylamine or hydroxylammonium salts, which comprises, in a first separation stage, selectively separating off nitrogen monoxide from the exhaust gas of the plant for producing hydroxylamine or hydroxylammonium salts. | 06-10-2010 |
20100158779 | Exhaust system having a gold-platinum group metal catalyst - A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide. | 06-24-2010 |
20100158780 | Small Engine Palladium Catalyst Article and Method of Making - Catalyst articles comprising substantially only a palladium precious metal component and related methods of preparation and use are disclosed. Disclosed is a catalyst article comprising a first layer formed on a carrier substrate, wherein the first layer comprises a refractory metal oxide and has a surface that is substantially uniform; and a second layer formed on the first layer, wherein the second layer comprises i) an oxygen storage component that is about 50-90% by weight of the second layer and ii) a palladium component in an amount of about 10-150 g/ft | 06-24-2010 |
20100183492 | EXHAUST GAS PURIFYING CATALYST - To overcome the problem of a conventional catalyst and to provide an exhaust gas purifying catalyst that meets the requirement concerning Hg oxidation activity and SO | 07-22-2010 |
20100183493 | EXHAUST GAS TREATING APPARATUS AND METHOD - An exhaust gas treating apparatus removes nitrogen oxides and mercury in an exhaust gas from a boiler by use of an ammonia denitration catalyst, the exhaust gas treating apparatus including: an ammonium chloride powder feed unit | 07-22-2010 |
20100196236 | TEMPLATED CATALYST COMPOSITION AND ASSOCIATED METHOD - A composition includes a templated metal oxide substrate having a plurality of pores and a catalyst material includes silver. The composition under H | 08-05-2010 |
20100196237 | TEMPLATED CATALYST COMPOSITION AND ASSOCIATED METHOD - A composition includes a templated metal oxide, at least 3 weight percent of silver, and at least one catalytic metal. A method of making and a method of using are included. | 08-05-2010 |
20100196238 | METHOD FOR DECOMPOSING DINITROGEN MONOXIDE - A method for decomposing dinitrogen monoxide including bringing a gas containing dinitrogen monoxide into contact with a fluid catalytic cracking (FCC) equilibrium catalyst. | 08-05-2010 |
20100202948 | Reverse Flow Reactor - A reactor cools humidifies gases produced by combustion or the like. The reactor has a chamber with an inlet at a lower end to receive a flow of gas, and an outlet at a upper end. The gas flows in a generally upward direction through the reactor. The horizontal cross-section of the chamber increases with height and the flow velocity of the gas decreases as it flows upwardly. The reactor includes at least one device for injecting water droplets into the upper region of the chamber, counter to the gas flow. As the water droplets fall, they gradually evaporate and lose mass and encounter a counterflow of increasingly higher velocity and temperature until the force of the upwardly flowing gas is sufficient to reverse their flow and carry them in an upward direction. | 08-12-2010 |
20100209323 | MOBILE DeNOx CATALYST - DeNOx catalysts for the reduction of NOx compounds and porous catalyst support materials are provided. The inventive catalysts comprise an active metal catalyst component and mixed TiO | 08-19-2010 |
20100209324 | Catalyst Promoters in Vanadium-Free Mobile Catalyst - Low temperature activity of a vanadium-free selective catalytic reduction catalyst is provided by a mixed metal oxide support containing oxides of titanium and zirconium, the support having a promoter deposited on the surface of the mixed metal oxide support, and further having an active catalyst component deposited over the promoter on the mixed metal oxide support surface. Suitable promoters include oxides of silicon, boron, aluminum, cerium, iron, chromium, cobalt, nickel, copper, tin, silver, niobium, lanthanum, titanium, and combinations thereof. Suitable active catalyst components include oxides of manganese, iron and cerium. | 08-19-2010 |
20100209326 | PEROVSKITE CATALYST SYSTEM FOR LEAN BURN ENGINES - A catalyst system for use with an internal combustion engine to provide emissions reductions under lean and stoichiometric operating conditions. The catalyst system comprises a first catalyst comprised of a newly developed Perovskite-based formulation having an ABO | 08-19-2010 |
20100215558 | METHOD AND APPARATUS FOR OPERATION OF CO/VOC OXIDATION CATALYST TO REDUCE NO2 FORMATION FOR GAS TURBINE - A power generating apparatus including a gas turbine engine combusting a fuel in air to produce shaft power and producing a flow of exhaust gases including oxides of nitrogen (NO | 08-26-2010 |
20100233053 | CATALYST AND METHOD OF MANUFACTURE - A method is provided. The method comprises reacting a reactive solution and a templating agent to form a gel; and calcining the gel to form a catalyst composition comprising homogeneous solid mixture. The homogenous solid mixture contains (i) at least one catalytic metal and (ii) at least one metal inorganic network. The templating agent comprises an octylphenol ethoxylate having a structure [I]: | 09-16-2010 |
20100239480 | Method And Apparatus For The Treatment Of Nitrogen Oxides Using An Ozone And Catalyst Hybrid System - The present invention is a method of treating nitrogen oxides using an ozone and catalyst hybrid system, as well as an apparatus, specifically relating to a method of treating nitrogen oxide using an ozone and catalyst hybrid system comprising: | 09-23-2010 |
20100247411 | HIGHLY ACIDIC COMPOSITIONS COMPRISING ZIRCONIUM OXIDE, TITANIUM OXIDE AND TUNGSTEN OXIDE AND TREATMENT OF EXHAUST GASES THEREWITH - Compositions useful for treating exhaust gases contain zirconium, titanium and tungsten oxides, and optionally the oxide of an element M selected from among silicon, aluminum, iron, molybdenum, manganese, zinc, tin, and rare earths in the following mass proportions of these different elements: titanium oxide: 20%-50%; tungsten oxide: 1%-20%, M-element oxide: 1%-20%; the balance being zirconium oxide; such compositions are prepared by placing in a liquid medium a zirconium compound, a titanium compound, optionally an M-element compound and a basic compound, adding a tungsten compound to the precipitate suspension thus obtained and having a pH value ranging from 1 to 7, maturing the suspension resulting from the preceding step, and optionally separating the precipitate and calcining same. | 09-30-2010 |
20100266470 | TITANIUM DIOXIDE BASED PHOTOCATALYTIC COMPOSITES AND DERIVED PRODUCTS ON A METAKAOLIN SUPPORT - Described herein is a photocatalytic composite comprising a titanium dioxide supported on metakaolin. In comparison to known embodiments of the sector, the composite of the present invention makes it possible to obtain binders and derived products with high photocatalytic efficiency, even when using photocatalyst quantities which are lesser than those present in products of prior technical art. | 10-21-2010 |
20100284876 | Layered Catalyst to Improve Selectivity or Activity of Manganese Containing Vanadium-Free Mobile Catalyst - Low temperature activity and high temperature ammonia selectivity of a vanadium-free selective catalytic reduction catalyst are controlled with a mixed oxide support containing oxides of titanium and zirconium, and a plurality of alternating layers respectively formed of a metal compound and titanium oxide present on the surface of the mixed oxide support. The metal compound is selected from the group consisting of manganese oxide, iron oxide, cerium oxide, tin oxide, and mixtures thereof. | 11-11-2010 |
20100284877 | CATALYST SYSTEMS - The present invention provides monolithic structural catalysts. The catalysts have a thin wall structure and are advantageous for catalyzing reactions of gaseous fluid or liquid fluid molecules, such as the denitration or selective catalytic reduction (SCR) of nitrogen oxides (NO | 11-11-2010 |
20100290966 | METHOD AND APPARATUS FOR THE REMOVAL OF FLUORINE FROM A GAS STREAM - A method for the removal of a fluorinated gas from a gas stream ( | 11-18-2010 |
20100296991 | METHOD AND DEVICE FOR PURIFYING THE FLUE GASES OF A SINTERING PROCESS OF ORES AND/OR OTHER MATERIAL-CONTAINING MATERIALS IN METAL PRODUCTION - In a method for the purifying of the waste gases of a sintering process of ores in the production of metals, in which ore material is sintered with a solid fuel, with the combustion of the solids and passage through a smoldering process, at least the pollutants SO | 11-25-2010 |
20100303697 | Selective Catalytic Reduction System and Process for Treating NOx Emissions Using a Zinc or Titanium Promoted Palladium-Zirconium Catalyst - A process and system ( | 12-02-2010 |
20100303698 | PROCESS FOR REGENERATOR MIXING - A process is provided for increasing mixing in a regenerator. Streamlines of gas and some catalyst may form in a regenerator as a result of cyclone inlet horns positioned in the same direction. Overall mixing in the regenerator may decrease because of these streamlines. A dampening device may be used to interrupt the streamlines and increase mixing in the regenerator. The dampening device may be a baffle and direct streamlines from the outside of the chamber toward the center to collide and mix. In another embodiment, a dampening device may be a secondary disengager such as a T-disengager or an inverted can arrangement that may discharge gas and catalyst near the center of the upper chamber and interrupt the streamlines. In another embodiment, a dampening device may have swirl arms that redirect stream lines counter to the direction of flow. | 12-02-2010 |
20100310440 | PROCESS FOR THE DIRECT SYNTHESIS OF Cu CONTAINING SILICOALUMINOPHOSPHATE (Cu-SAPO-34) - The present invention relates to a process for the preparation of pure silicoaluminophosphate (SAPO-34) and which contains Cu wherein said molecular sieve material is obtained in a single process stage. This process stage is a hydrothermal crystallization stage to which an aqueous solution is subjected which, apart from source of silica, alumina and phosphorous usually employed framework elements of the zeolite framework, already contains all the Cu necessary for the preparation of the final Cu containing silicoaluminophosphate (SAPO34). In addition, the present invention relates to a pure copper containing molecular sieve material as such, having framework structure SAPO-34, having a molar composition according to formula: Cu | 12-09-2010 |
20100322834 | Method of and Apparatus for Treating Gas Containing Nitrous Oxide - An apparatus for treating gas containing nitrous oxide, according to the present invention, includes dampers ( | 12-23-2010 |
20100322835 | HEAT RECOVERY DEVICE FOR A BOILER - A boiler conveys an exhaust gas stream to a heat recovery device. The heat recovery device includes an air straightener, a heat recovery unit or feedwater heater, and a catalyst assembly postioned between the air straightener and the feedwater heater. The catalyst assembly has a catalyst drawer or bed that holds a quantity of catalyst materials for removing contaminants from the exhaust gas stream. The air straightener has a plurality of baffles that are arranged in a manner that optimizes the performance of the catalyst drawer or bed. The baffles also prevent condensation from leaking from the feedwater heater into the boiler. The feedwater heater recovers a quantity of heat from the exhaust gas stream. | 12-23-2010 |
20100329955 | Wet scrubber additive for simultaneous removal of oxides and metals from a gas - A method for controlling multipollutant (e.g., SO | 12-30-2010 |
20110002827 | MERCURY REDUCTION SYSTEM AND MERCURY REDUCTION METHOD OF FLUE GAS CONTAINING MERCURY - A mercury reduction system includes an NH | 01-06-2011 |
20110002828 | MERCURY REDUCTION SYSTEM AND MERCURY REDUCTION METHOD OF FLUE GAS CONTAINING MERCURY - A mercury reduction system according to the present embodiment is a mercury reduction system that reduces NOx and Hg in flue gas discharged from a boiler, and includes a chemical supplying unit that mixes an NH | 01-06-2011 |
20110002829 | MERCURY REDUCTION SYSTEM AND MERCURY REDUCTION METHOD OF FLUE GAS CONTAINING MERCURY - A mercury reduction system according to the present embodiment is a mercury reduction system that reduces NOx and Hg in flue gas discharged from a boiler, and includes an NH | 01-06-2011 |
20110002830 | SELECTIVE CATALYTIC REDUCTION OF NOx ENABLED BY SIDESTREAM UREA DECOMPOSITION - A preferred apparatus arrangement utilizes the enthalpy of the flue gas, which can be supplemented if need be, to convert urea ( | 01-06-2011 |
20110008230 | SYSTEMS AND METHODS FOR HIGH EFFICIENCY REGENERATIVE SELECTIVE CATALYTIC REDUCTION - The invention provides a system for regenerative selective catalytic reduction including a catalyst chamber that contains a catalyst for reducing NO | 01-13-2011 |
20110033360 | METHOD OF OPERATING HYDROLYTIC SEPARATOR - Provided is a method of operating a hydrolytic separator in which ammonia gas to be used as a reducing agent in a flue gas denitrization apparatus is generated by the hydrolysis of an aqueous urea solution. When the hydrolytic separator is started and ammonia gas injection is initiated, the hydrolytic separator is operated in a constant-pressure mode in which the internal pressure of the hydrolytic separator is kept constant regardless of the increasing temperature of the hydrolytic separator. Thereafter, the constant-pressure operation is switched to a variable pressure operation in which the pressure is raised as the temperature of the hydrolytic separator rises. In the method, the constant-pressure operation is switched to the variable pressure operation after the temperature of the hydrolytic separator in the constant-pressure operation has reached or exceeded the variable pressure operation temperature corresponding to that pressure. As a result, the hydrolytic separator can be operated with satisfactory timing so that the generation amount of ammonia necessary for flue gas denitration can be kept proper. | 02-10-2011 |
20110052467 | CERAMIC NANOFIBERS CONTAINING NANOSIZE METAL CATALYST PARTICLES AND MEDIUM THEREOF - Ceramic nanofibers contain nanosize metal catalyst particles on the surface thereof. The catalyst-ceramic nanofibers when supported as by larger fibers form a medium that effectively catalyze various reactions as in fluid flow processes. | 03-03-2011 |
20110052468 | METHOD OF REMOVING MERCURY FROM EXHAUST GAS USING CHLORINE COMPOUND - There is provided an effective method for removing mercury comprising injecting NaClO | 03-03-2011 |
20110070138 | USE OF PHOTOCATALYTICALLY COATED PARTICLES FOR DECOMPOSITION OF AIR POLLUTANTS - The invention relates to the use of iron oxide particles coated with titanium dioxide, and in particular to their use for decomposing air pollutants photocatalytically. The invention is further directed to the use of iron oxide particles being at least partially coated with titanium dioxide, for photocatalytically decomposing air pollutants selected from nitrogen oxides (NO | 03-24-2011 |
20110070139 | CATALYST COMBINATIONS AND METHODS AND SYSTEMS FOR OXIDIZING NITRIC OXIDE IN A GAS STREAM - One embodiment of the invention may include a product comprising a catalyst combination comprising a perovskite catalyst and a second catalyst that is not a perovskite catalyst. | 03-24-2011 |
20110070140 | CATALYST FOR REMOVAL OF NITROGEN OXIDE AND METHOD FOR REMOVAL OF NITROGEN OXIDE - A nitrogen oxide removing catalyst has a porous material having fine holes with controlled diameters and a catalyst having an active ingredient supported in the fine holes are used. In one instance, the diameter of the plurality of fine holes is within a range of 8-9 Å. The fine hole diameter is preferably from 8-9 Å when the diameter is measured in a gas adsorption method in which fine holes with diameters of 3.4-14 Å can be measured. The fine hole diameter is also preferably from 8-9 Å when the fine hole diameter is calculated from a crystal structure. In another instance, the porous material is mesoporous silica. The primary particle diameter of the mesoporous silica is preferably within a range of 150-300 nm. The nitrogen oxide removing catalyst having superior durability and a method of removing nitrogen oxides are also provided. | 03-24-2011 |
20110076215 | INTEGRATED BOILER AND AIR POLLUTION CONTROL SYSTEMS - An air pollution control system includes an emission treatment system configured to receive flue gas, to reduce at least one pollutant therefrom, and to output emission treated flue gas. A first air heater in fluid communication with the emission treatment system includes a heat exchanger for heating forced air introduced thereto above a base temperature and thereby cooling emission treated flue gas from the emission treatment system to a stack discharge temperature. A second air heater in fluid communication with the first air heater to receive heated forced air therefrom includes a heat exchanger for heating forced air introduced thereto to a preheat temperature for combustion in a boiler and thereby cooling flue gas introduced from a boiler to the second air heater to an emission treatment temperature. The second air heater is in fluid communication with the emission treatment system to introduce cooled flue gas thereto. | 03-31-2011 |
20110091367 | GRANULATE HAVING PHOTOCATALYTIC ACTIVITY AND METHODS FOR MANUFACTURING THE SAME - The present invention is directed to a granulate having photocatalytic activity, comprising particles of an inorganic particulate material coated with a photocatalytically active compound for introducing photocatalytic activity into or on building materials. The invention is further related to the manufacture of such a granulate and its use into or on building materials such as cement, concrete, gypsum and/or limestone and water-based coatings or paints for reducing an accumulation and growth of microorganisms and environmental polluting substances on these materials and thus reducing the tendency of fouling, while the brilliance of the colour is maintained and the quality of the air is improved. | 04-21-2011 |
20110116999 | EXHAUST GAS PURIFICATION CATALYST ON WHICH INFLUENCE OF IRON COMPOUND HAS BEEN SUPPRESSED - An exhaust gas purification catalyst is provided which contains titanium oxide as a main component and an oxide of one element or two or more elements selected from the group consisting of tungsten (W), molybdenum (Mo), and vanadium (V) as an active component, wherein the exhaust gas purification catalyst contains phosphoric acid or a water soluble phosphoric acid compound so that the atomic ratio of phosphorus (P) to a catalytically active component represented by the following formula is more than 0 and 1.0 or less; | 05-19-2011 |
20110117000 | METHOD FOR REFINING DILUTION AIR AND DILUTION AIR REFINERY - An object of this invention is to diminish a ratio of a concentration of N | 05-19-2011 |
20110150731 | CATALYST COMPOSITION FOR SELECTIVE CATALYTIC REDUCTION OF EXHAUST GASES - A catalyst composition represented by the general formula XVO | 06-23-2011 |
20110150732 | METHOD AND DEVICE FOR CONTROLLING THE SUPPLY OF A REDUCING AGENT TO AN SCR SYSTEM - A selective catalytic reduction reactor ( | 06-23-2011 |
20110158876 | INTEGRATED EXHAUST GAS COOLING SYSTEM AND METHOD - An integrated exhaust gas cooling system and method, including an expansion joint linking the system to an upstream source of exhaust gas and a pre-oxidation section through which exhaust gas travels. A hot temperature zone in which the exhaust gas is maintained at a temperature optimal for an oxidation process extends through the pre-oxidation section. An oxidation catalyst in the hot temperature zone is provided. The exhaust gas passes through the oxidation catalyst. Oxidized exhaust gas passes a post-oxidation section downstream of the oxidation catalyst. A tempering air stream is injected into the post-oxidation section to create a cool temperature zone in which the oxidized exhaust gas is cooled below the temperature in the hot temperature zone and to a temperature optimal for a reduction process. The system includes a reduction catalyst in the cool temperature zone through which the oxidized exhaust gas passes. | 06-30-2011 |
20110165048 | METHOD OF TREATING NITROGEN OXIDE-CONTAINING GAS - First, the emission amount of nitrogen oxides can be decreased close to zero as much as possible, and the emission amount of carbon monoxide is decreased to a permissible range. Second, energy saving by combustion at a low air ratio close to 1.0 is realized. Third, air ratio control is performed stably in a combustion region at a low air ratio. | 07-07-2011 |
20110165049 | CATALYST FOR REMOVAL OF NTROGEN OXIDES FROM EXHAUST GAS, METHOD OF PREPARING THE SAME AND METHOD OF REMOVING NITROGEN OXIDES USING THE SAME FROM EXHAUST GAS - The present invention relates to a catalyst for removal of nitrogen oxides from exhaust gas, a method of preparing the same and a method of removing nitrogen oxide in an exhaust gas using the same, and more particularly, to a catalyst for removal of nitrogen oxides from exhaust gas in which a ceramic fiber carrier is hydrothermal-treated prior to washcoating to improve the hydrothermal stability of catalyst, a method of preparing the same and a method of removing nitrogen oxide in an exhaust gas using the same. | 07-07-2011 |
20110165050 | Sealing of no compressor and residaul gas expander in a nitric acid plant - A process for sealing the NO compressor and the residual gas expander in a plant for the production of nitric acid by the dual-pressure process uses a low-pressure section, a NO compressor, a high-pressure section with oxidation and absorption, at least one heat exchanger, a residual gas expander, in which ammonia and compressed air are passed into the low-pressure section of the nitric acid plant, where ammonia is oxidised via a catalyst to yield NO and water. The obtained NO is partly oxidised to yield NO | 07-07-2011 |
20110189069 | EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PRODUCTION THEREOF - The invention realizes a catalyst which is hardly deteriorated even when volatile catalyst-poisoning compounds such as P and As are accumulated and which can reduce the rate of oxidation of SO | 08-04-2011 |
20110195007 | CATALYST FOR REMOVING NOx FROM EXHAUST GAS OF LEAN-BURNING AUTOMOBILES OR INCINERATORS - The present invention relates to a catalyst for removing NOx contained in exhaust gas, more specifically to a catalyst for removing NOx using metal titanate as a support. The catalyst for removing NOx according to the present invention allows metal titanate to act as a support as well as an adsorption and storage agent (hereafter an adsorption/storage agent) of NOx in lean-burn conditions. Supported noble metals or transition metal components provide a catalyst function which helps adsorption/storage by oxidizing NOx into NO2 in lean-burn conditions and participates in the reaction of reducing the adsorbed and stored NO2 into N2 in fuel-rich conditions. The catalyst according to the present invention has twice the NOx storage amount of conventional catalysts, for example Ba, and enables effective removal even in operational conditions of a wider range than 150˜700° C. In addition, practical use which has been impossible until now is enabled due to the stable NOx removal capability even in conditions where SOx is present in exhaust gas. | 08-11-2011 |
20110223088 | Method and Apparatus for On-Site Production of Lime and Sorbents for Use in Removal of Gaseous Pollutants - The invention provides various methods for removing gas phase pollutants by calcining limestone or dolomite using flash calcination to produce a high surface area lime or hydrated lime and directly adding the lime or hydrated lime to a gas stream containing gas phase pollutants. In other methods, the production of an activated sorbent, such as activated carbon, is combined with the production of the high surface area lime or hydrated lime and directly added to a gas stream containing gas phase pollutants. The combination of lime or hydrated lime and an activated sorbent enhances the removal of gas phase pollutants such as those from a coal-fired boiler flue gas. | 09-15-2011 |
20110236282 | ZROX, CE-ZROX, CE-ZR-REOX AS HOST MATRICES FOR REDOX ACTIVE CATIONS FOR LOW TEMPERATURE, HYDROTHERMALLY DURABLE AND POISON RESISTANT SCR CATALYSTS - The present invention relates to application of catalysts for the Selective Catalytic Reduction of oxides of Nitrogen using N-containing reductant. The catalysts are characterised as phase pure lattice oxide materials into which catalytically active cations are incorporated at high levels of dispersion such that conventional analysis reveals a highly phase pure material. The materials are further characterised by high activity, hydrothermal durability and poison tolerance in the intended application. | 09-29-2011 |
20110236283 | NOx REMOVAL CATALYST FOR HIGH-TEMPERATURE FLUE GAS, MANUFACTURING METHOD THEREOF, AND NOx REMOVAL METHOD FOR HIGH-TEMPERATURE FLUE GAS - A NOx removal catalyst for high-temperature flue gas according to the present invention is a NOx removal catalyst for high-temperature flue gas that contains nitrogen oxide in which tungsten oxide with the number of molecular layers of tungsten oxide (WO | 09-29-2011 |
20110236284 | PHOTOCATALYST-COATED BODY AND PHOTOCATALYTIC COATING LIQUID - Disclosed are a photocatalyst-coated body that can realize a good weather resistance, a photocatalyst-coated body that, in removing NOx, particularly in removing NOx in air, can suppress the production of an intermediate product such as NO | 09-29-2011 |
20110250114 | Vanadia-Based DeNOx Catalysts and Catalyst Supports - A vanadia-based catalytic composition for reduction of nitrogen oxides includes a titania-based support material; vanadia deposited on the titania-based support material; a primary promoter comprising tungsten oxide, molybdenum oxide or combinations thereof; and an amount of phosphate to achieve a mole ratio of phosphorus to vanadium plus molybdenum of about 0.2:1 or greater. A zirconia, tin or manganese oxide can be added to further inhibit the volatility of molybdenum. Results show low SO | 10-13-2011 |
20110262333 | Controlling ammonia flow in a selective catalytic reduction system during transient non-steady-state conditions - A selective catalytic reduction (SCR) system is defined that uses the measured concentration of reactant slip in the exhaust gas after SCR processing to control the amount of reactant injected during non-steady-state operational conditions. The SCR system works with a reactant slip detector located in the post-SCR processing section of the exhaust flue. The reactant slip detector measures the concentration of reactant in the exhaust gases and, based on that concentration, the amount of reactant injected into the pre-SCR processing exhaust gases is controlled. | 10-27-2011 |
20110262334 | SYSTEM AND METHOD FOR CONTROLLING AND REDUCING NOx EMISSIONS - Methods and systems are provided for reducing NOx emissions from a gas stream produced by a production source. The method may comprise oxidizing a substantial portion of NO gas present in the gas stream by contacting the gas stream with an oxidation catalyst to yield higher order N | 10-27-2011 |
20110262335 | Nitrosyl special connector - A unique combination of male and female gas connectors for one way transfer of gasses. | 10-27-2011 |
20110268638 | METHOD OF MERCURY REMOVAL FROM COMBUSTION EXHAUST GAS AND COMBUSTION EXHAUST GAS PURIFICATION APPARATUS - A method for removing mercury in a combustion exhaust gas includes injecting ammonia or urea as a reducing agent into a combustion exhaust gas containing nitrogen oxides, sulfur dioxide, metallic mercury, and hydrogen halides, and then introducing the combustion exhaust gas to a denitration apparatus filled with a denitration catalyst to cause a denitration reaction and oxidize the metallic mercury to produce mercury halide; and introducing the combustion exhaust gas through an air preheater and an electric dust collector to a wet desulfurization apparatus, thereby removing sulfur dioxides and the mercury halide, wherein the ammonia concentration of the combustion exhaust gas at an exit of the denitration apparatus is maintained at 5 ppm or higher, and the mercury halide is adsorbed or precipitated onto combustion ash and collected by the electric dust collector to discharge the mercury halide out of a system. | 11-03-2011 |
20110274606 | THERMALLY REGENERABLE NITRIC OXIDE ADSORBENT - A method of reducing nitrogen oxides (NO | 11-10-2011 |
20110286903 | CATALYTIC REDUCTION OF NOx - A system for NO | 11-24-2011 |
20110311425 | COMPLEX OXIDE AND METHOD FOR PRODUCING THE SAME, AND CATALYST, METHOD AND APPARATUS FOR PURIFYING NITROGEN OXIDE - Provided are a complex oxide useful as a catalyst that has superior heat resistance and is able to remove a nitrogen oxide in the presence of ammonia; a method for producing the same; a nitrogen-oxide removal catalyst, which contains the complex oxide as an active ingredient; a method for removing a nitrogen oxide using the same; and an apparatus including the catalyst. The complex oxide containing cerium oxide, titanium oxide, zirconium oxide, and sulfate (sulfate ion: SO | 12-22-2011 |
20120009109 | Treatment of Flue Gas From an Oxyfuel Combustion Process - Carbon monoxide (CO) may be removed from flue gas generated by oxyfuel combustion of a hydrocarbon or carbonaceous fuel, by contacting the flue gas, or a CO-containing gas derived therefrom, at a first elevated temperature, e.g. at least 80° C., and at a first elevated pressure, e.g. at least 2 bar (0.2 MPa), with at least one catalyst bed comprising a CO-oxidation catalyst in the presence of oxygen (O | 01-12-2012 |
20120014854 | NANOPARTICULAR METAL OXIDE/ANATASE CATALYSTS - The present invention concerns a method of preparation of nanoparticular metal oxide catalysts having a narrow particle size distribution. In particular, the invention concerns preparation of nanoparticular metal oxide catalyst precursors comprising combustible crystallization seeds upon which the catalyst metai oxide is co-precipitated with the carrier metal oxide, which crystallization seeds are removed by combustion in a final calcining step. The present invention also concerns processes wherein the nanoparticular metal oxide catalysts of the invention are used, such as SCR (deNOx) reactions of nitrogen oxides with ammonia or urea as reductant, oxidations of alcohols or aldehydes with dioxygen or air to provide aldehydes, ketones or carboxylic acids, and photocatalytic oxidation of volatile organic compounds (VOCs). | 01-19-2012 |
20120014855 | APPARATUS AND PROCESS FOR DECOMPOSING DINITROGEN MONOXIDE IN AN ADIABATIC FIXED BED REACTOR - The invention relates to an apparatus and to a process for decomposing dinitrogen monoxide. The apparatus comprises a gas inlet | 01-19-2012 |
20120063982 | PROCESS AND DEVICE FOR DECOMPOSING LAUGHING GAS - The laughing-gas-containing gas ( | 03-15-2012 |
20120082606 | CATALYST AND METHOD OF MANUFACTURE - According to various embodiments, a catalyst composition includes a catalytic metal secured to a porous substrate. The substrate has pores that are templated. The substrate is a product of adding a substrate precursor to a water-in-oil microemulsion including a catalytic metal salt, a solvent, a templating agent, and water. | 04-05-2012 |
20120082607 | Hydrocarbon Selective Catalytic Reduction Catalyst for NOx Emissions Control - The present disclosure provides an AgBi catalyst over alumina suitable for performing hydrocarbon selective catalytic reduction (HC-SCR). | 04-05-2012 |
20120107207 | SYSTEMS AND METHODS FOR ENHANCED SELECTIVE CATALYTIC REDUCTION OF NOX - A system for reducing nitrogen oxides from an exhaust fluid is provided. The system includes an exhaust source, a hydrocarbon reductant source, a first injector in fluid communication with the hydrocarbon reductant source, where the first injector receives a first hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the first portion of the hydrocarbon reductant stream. The system further includes a first catalyst that receives the exhaust stream and the first hydrocarbon reductant stream, a second injector in fluid communication with the hydrocarbon reductant source, where the second injector receives a second hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the second hydrocarbon reductant stream, and a second catalyst disposed to receive an effluent from the first catalyst and the second portion of the hydrocarbon reductant stream. | 05-03-2012 |
20120107208 | GAS TREATMENT METHOD AND APPARATUS FOR CIRCULATING FLUIDIZED-BED GASIFICATION SYSTEM - In a circulating fluidized-bed gasification system, an ammonia-off gas | 05-03-2012 |
20120128562 | TREATING CATALYSTS - A method includes contacting a catalyst including a metal having an average particle size of approximately one nanometer or greater with SO | 05-24-2012 |
20120134907 | COATED PEROVSKITE-BASED CATALYSTS, CATALYST COMBINATIONS AND METHODS OF TREATING A GAS STREAM - One embodiment of the invention includes a method of treating a gas stream comprising flowing the gas stream over a hydrocarbon reduction and NO | 05-31-2012 |
20120141347 | NON-ZEOLITE BASE METAL SCR CATALYST - An article for treating a gas containing nitrogen oxides having a monolith substrate loaded with a catalytic composition containing at least one catalytic component consisting of (i) at least one transition metal dispersed on a mixed oxide or composite oxide or a mixture thereof as support material consisting of cerium and zirconium; or (ii) cerium oxide and zirconium oxide as single oxides or a composite oxide thereof or a mixture of the single oxides and the composite oxide dispersed on an inert oxide support material, wherein at least one transition metal is dispersed thereon, wherein the at least one transition metal is selected from the group consisting of a metal from Group VIB, IB, IVA, VB, VIIB, and VIII and mixtures of any two or more thereof, provided that at least one selected transition metal is tungsten, wherein the catalytic composition is disposed on said monolith substrate. | 06-07-2012 |
20120164047 | Catalyst Promoters In Vanadium-Free Mobile Catalyst - Low temperature activity of a vanadium-free selective catalytic reduction catalyst is provided by a mixed metal oxide support containing oxides of titanium and zirconium, the support having a promoter deposited on the surface of the mixed metal oxide support, and further having an active catalyst component deposited over the promoter on the mixed metal oxide support surface. Suitable promoters include oxides of silicon, boron, aluminum, cerium, iron, chromium, cobalt, nickel, copper, tin, silver, niobium, lanthanum, titanium, and combinations thereof. Suitable active catalyst components include oxides of manganese, iron and cerium. | 06-28-2012 |
20120171096 | SYSTEMS AND METHODS FOR HIGH EFFICIENCY REGENERATIVE SELECTIVE CATALYTIC REDUCTION - The invention provides a system for regenerative selective catalytic reduction including a catalyst chamber that contains a catalyst for reducing NO | 07-05-2012 |
20120171097 | CATALYST FOR TREATING EXHAUST GASES, METHOD FOR PRODUCING THE SAME, AND METHOD FOR TREATING EXHAUST GASES - A catalyst for treating exhaust gases containing nitrogen monoxide, carbon monoxide and volatile organic compounds includes a plurality of layers, an upper layer of which has an active component contained uniformly therein and a lower layer of which has no active component contained therein. The catalyst is obtained through the steps of: forming the lower layer by coating the surface of substrate with a slurry of a porous inorganic compound, followed by drying; and forming the upper layer, which is to be the top surface of the catalyst, by coating the surface of the lower layer with a slurry of a porous inorganic compound that has the active component composed of one or more precious metals supported thereon, followed by drying. The oxidation power of the resulting catalyst is enhanced without increasing the amount of precious metal supported thereon. | 07-05-2012 |
20120177553 | Injector And Method For Reducing Nox Emissions From Boilers, IC Engines and Combustion Processes - A system and method of reducing NOx emissions from a lean burn combustion source is provided. The system includes at least one injection lance having a elongated shaft with distal and proximal ends, a metering valve positioned at the distal end, an atomization chamber positioned between the metering valve and the distal end, a storage chamber for containing a reagent fluidly connected to the metering valve, an injection tip positioned at the proximal end for delivering the reagent, and at least one air port for supplying air to the atomization chamber. The injection lance is positioned in the combustion source, and the reagent is supplied from the storage chamber to the injection lance at an inlet pressure. The reagent is then injected into the combustion source via the injection lance, wherein a temperature of the reagent prior to the injection is maintained below a hydrolysis temperature of the reagent. | 07-12-2012 |
20120183463 | PROCESS AND APPARATUS FOR DENOXING OF FLUE GASES - A process and an apparatus denox flue gases containing carbon monoxide and/or gaseous organic substances with at least one catalyst for catalytic reduction of the nitrogen oxide NOx and a heat exchanger for heating the flue gases from recovery of the residual heat of the denoxed flue gases before the catalytic reduction to a reaction temperature of 160° C. to 500° C. For the best possible denoxing of the flue gases with simultaneous minimization of the externally supplied energy needed, it is envisaged that the losses associated with the heat movement in the heat exchanger will be compensated for by providing at least one stage for regenerative post combustion of the carbon monoxide and/or of the gaseous organic substances. | 07-19-2012 |
20120189521 | AIR POLLUTION CONTROL DEVICE AND METHOD FOR REDUCING AMOUNT OF MERCURY IN FLUE GAS - The air pollution control device includes: NH | 07-26-2012 |
20120201732 | CE CONTAINING, V-FREE MOBILE DENOX CATALYST - A catalyst for removal of NOx from exhaust gas, containing cerium oxide and titanium dioxide, wherein a first portion of the cerium oxide forms at least one agglomerate of cerium oxide crystallites interdispersed in the titanium dioxide, and a second portion of the cerium oxide forms at least one island on a surface of the titanium dioxide, a method for producing the catalyst, a process for selectively reducing NOx levels in an exhaust gas using the catalyst, and an SCR canister containing the catalyst therein. | 08-09-2012 |
20120219487 | METHOD FOR ADSORBING AND DECOMPOSING LEAN NITROGEN OXIDE USING A MIXED METAL OXIDE CATALYST - The present invention relates to a method of adsorbing and reducing nitrogen oxides using a mixed metal oxide catalyst, and more particularly, to a method of improving the efficiency of adsorption and desorption of nitrogen oxides using a mixed metal oxide catalyst prepared from a hydrotalcite precursor. According to the invention, NOx and N | 08-30-2012 |
20120230899 | MIXED METAL OXIDE CATALYST FOR DECOMPOSITION OF NITROGEN OXIDES - The present invention relates to a mixed metal oxide catalyst in which a hydrotalcite precursor containing an alkali metal is impregnated or intercalated with a nonprecious metal, a method of manufacturing the same, and a method of decomposing nitrogen oxide using the mixed metal oxide catalyst. The mixed metal oxide catalyst has excellent catalytic activity because it can decompose NO | 09-13-2012 |
20120251422 | Fe-SAPO-34 CATALYST AND METHODS OF MAKING AND USING THE SAME - There is disclosed a method of making, through direct synthesis, a catalyst comprising an Fe-SAPO-34 molecular sieve. There is also disclosed an Fe-SAPO-34 molecular sieve made according to the disclosed method herein, wherein the molecular sieve contains both framework iron and iron cations at ion-exchange sites. In addition, there is disclosed a method of using the Fe-SAPO-34 disclosed herein in a selective catalytic reduction reaction, typically in the presence of ammonia or urea, to reduce or remove nitric oxides from exhaust emissions. | 10-04-2012 |
20120308459 | CATALYSTS POSSESSING AN IMPROVED RESISTANCE TO POISONING - The present invention relates generally to the field of catalysts for use in connection with one or more types of emissions control (e.g., emissions control associated with the combustion of one or more types of fossil fuel) and, in particular to catalyst compositions that possess an improved resistance to at least one type of poisoning. In another embodiment, the catalysts of the present invention are designed to be utilized in conjunction with an SCR and possess an improved resistance to phosphorus poisoning. | 12-06-2012 |
20120308460 | Nanocomposite Particle and Process of Preparing the Same - A nanocomposite particle, its use as a catalyst, and a method of making it are disclosed. The nanocomposite particle comprises titanium dioxide nanoparticles, metal oxide nanoparticles, and a surface stabilizer. The metal oxide nanoparticles are formed hydrothermally in the presence of the titanium dioxide nanoparticles. The nanocomposite particle is an effective catalyst support, particularly for DeNO | 12-06-2012 |
20120315206 | DEACTIVATION-RESISTANT CATALYST FOR SELECTIVE CATALYTIC REDUCTION OF NOX - The present invention relates to a catalyst for selective catalytic reduction of NO | 12-13-2012 |
20130004397 | NOx REDUCTION CATALYST AND NOx REDUCTION METHOD FOR EXHAUST COMBUSTION GAS OF BIOMASS - In light of the fact that a catalyst of the prior art rapidly deteriorates in an exhaust gas of biomass combustion, the present invention realizes a NO | 01-03-2013 |
20130078173 | COMBINED SLIP CATALYST AND HYDROCARBON EXOTHERM CATALYST - A catalyst comprising: (a) a first layer comprising an oxidizing catalyst having an effective PGM loading such that oxidation of hydrocarbons generates sufficient heat to regenerate soot, wherein said effective amount of PGM is greater than about 10 g/ft | 03-28-2013 |
20130115154 | Catalyst Material and Process for the Production Thereof - A TiO2-based catalyst material in particle form having a content of metal removes pollutants, in particular of nitrogen oxides from combustion gases. | 05-09-2013 |
20130115155 | ADSORBER HAVING INNER COATING - The invention relates to an adsorber, including a reaction chamber, an adsorbent having adsorption properties enabling the at least partial removal of water from a gas stream including NOx and/or SOx, and a coating essentially consisting of a polymer material on at least a portion of the inner metal wall of the reaction chamber, said polymer being resistant to the acidic liquids at temperatures above 150° C. | 05-09-2013 |
20130129590 | EXHAUST GAS PURIFYING CATALYST - To overcome the problem of a conventional catalyst and to provide an exhaust gas purifying catalyst that meets the requirement concerning Hg oxidation activity and SO | 05-23-2013 |
20130142719 | EXHAUST GAS PURIFICATION CATALYST AND PRODUCTION METHOD THEREFOR, AND METHOD FOR PURIFYING NITROGEN OXIDE IN EXHAUST GAS - An exhaust gas purification catalyst is made as a composition comprising titanium oxide (TiO | 06-06-2013 |
20130164205 | HETEROPOLY ACID PROMOTED CATALYST FOR SCR OF NOx WITH AMMONIA - The present invention concerns the selective removal of nitrogen oxides (NOx) from gases. In particular, the invention concerns a process, a highly alkali metal resistant heteropoly acid promoted catalyst and the use of said catalyst for removal of NOx from exhaust or flue gases, said gases comprising alkali or earth alkali metals. Such gases comprise for example flue gases arising from the burning of biomass, combined biomass and fossil fuel, and from waste incineration units. The process comprises the selective catalytic reduction (SCR) of NOx, such as nitrogen dioxide (NO | 06-27-2013 |
20130202513 | Ce-BASED COMPOSITE OXIDE CATALYST, PREPARATION METHOD AND APPLICATION THEREOF - Disclosed is a Ce-based composite oxide catalyst for selective catalytic reducing nitrogen oxides with ammonia, which comprises Ce oxide and at least one oxide of transition metal except Ce. The Ce-based composite oxide catalyst is prepared by a simple method which uses non-toxic and harmless raw materials, and it has the following advantages: high catalytic activity, and excellent selectivity for generating nitrogen etc. The catalyst can be applied in catalytic cleaning plant for nitrogen oxides from mobile and stationary sources. | 08-08-2013 |
20130224095 | PROCESS OF REMOVING NOx FROM FLUE GAS - The invention includes a process for reducing the amount of NO | 08-29-2013 |
20130224096 | PHOTOCATALYST COATED BODY AND PHOTOCATALYST COATING LIQUID - A photocatalyst coated body includes a base and a photocatalyst layer provided on the base. The photocatalyst coated body is characterized in that photocatalyst layer contains 1-20 (inclusive) parts by mass of photocatalyst particles, 30-98 (inclusive) parts by mass of silica particles and 1-50 (inclusive) parts by mass of zirconia particles, so that the total all of these particles is 100 parts by mass. The photocatalyst coated body is also characterized in that the zirconia particles are at least one kind of particles selected from the group consisting of crystalline zirconia particles having an average crystallite diameter of 10 nm or less and amorphous zirconia particles. Such photocatalyst coated body has excellent photocatalytic degradation function and excellent weather resistance; and also it is capable of suppressing the formation of intermediate products such as NO | 08-29-2013 |
20130230443 | SOLID AMMONIA STORAGE AND DELIVERY MATERIAL - Disclosed is a method for the selective catalytic reduction of NO | 09-05-2013 |
20130236381 | DENITRATION CATALYST COMPOSITION AND METHOD OF DENITRATION USING SAME - A denitration catalyst composition to efficiently and reductively remove nitrogen oxides from exhaust gas of a boiler or an internal combustion engine operated in lean-combustion, such as a gasoline engine, a diesel engine, by carbon monoxide and hydrocarbons; and a denitration method using the catalyst composition. In the denitration catalyst composition, a precious metal element having Rh as an essential component is supported on a zirconium oxide-based carrier formed by condensing or mixing primary particles having a zirconium oxide as a main component, and further a cerium-containing oxide (B) is present at the surface of the zirconium oxide-based carrier and at the gap of the secondary particles; and a denitration method characterized in that exhaust gas containing NO, CO and O | 09-12-2013 |
20130251612 | EXHAUST GAS PURIFICATION CATALYST SUPPRESSING INFLUENCE OF IRON COMPOUND - An exhaust gas purification catalyst contains titanium oxide as a main component and an oxide of one element or two or more elements selected from the group consisting of tungsten (W), molybdenum (Mo), and vanadium (V) as an active component, wherein the exhaust gas purification catalyst contains phosphoric acid or a water soluble phosphoric acid compound so that the atomic ratio of phosphorus (P) to a catalytically active component represented by the following formula is more than 0 and 1.0 or less; P/catalytically active component (atomic ratio)=number of moles of P/(number of moles of W+number of moles of Mo+number of moles of V). | 09-26-2013 |
20130272942 | VANADIUM/TITANIA CATALYST COMPRISING NATURAL MANGANESE ORE FOR REMOVING NITROGEN OXIDES AND DIOXIN IN WIDE OPERATING TEMPERATURE RANGE AND METHOD OF USING THE SAME - Disclosed is a vanadium/titania-based catalyst including natural manganese ore for removing nitrogen oxides and dioxin in a wide operating temperature range and a method of using the same. Specifically, this invention pertains to a vanadium/titania (V/TiO | 10-17-2013 |
20130280153 | BIOMASS BOILER SCR NOX & CO REDUCTION SYSTEM - A selective catalytic reduction system and method for reducing nitrogen oxide (NO | 10-24-2013 |
20130287664 | System and Method for Exhaust Gas After Treatment - A hydrocarbon selective catalytic reduction (HC-SCR) catalyst is regenerated using a nitrogen-based reductant agent. The HC-SCR catalyst is in communication with a power system such as an internal combustion engine and receives exhaust gasses from the internal combustion engine. Sulfur in the exhaust gasses may deactivate the HC-SCR catalyst by sulfur oxides forming thereon. To remove the sulfur oxides, a nitrogen-based reductant agent is introduced to the exhaust gasses. The nitrogen-based reductant agent decomposes to nitrogen oxides and hydrogen. The hydrogen reacts with the sulfur oxides to form hydrogen sulfides thereby removing the sulfur oxides from the HC-SCR catalyst. | 10-31-2013 |
20130287665 | CARRIER FOR NOx REDUCTION CATALYST - A NOx reduction catalyst carrier yields a NOx reduction catalyst with an improved permissible dose of poisoning substances such as arsenic. More specifically, the present invention relates to a NOx reduction catalyst carrier comprising TiO | 10-31-2013 |
20130315810 | APPARATUS AND SYSTEM FOR NOx REDUCTION IN WET FLUE GAS - The present invention relates to a method and a system for cleaning a CO | 11-28-2013 |
20140004027 | TITANIA CARRIER FOR SUPPORTING CATALYST, MANGANESE OXIDE-TITANIA CATALYST COMPRISING THE SAME, APPARATUS AND METHOD FOR MANUFACTURING THE TITANIA CARRIER AND MANGANESE OXIDE-TITANIA CATALYST, AND METHOD FOR REMOVING NITROGEN OXIDES | 01-02-2014 |
20140004028 | SYSTEM AND METHOD FOR LOW NOX EMITTING REGENERATION OF DESICCANTS | 01-02-2014 |
20140010748 | SYSTEM USING SELECTIVE CATALYTIC REDUCTION FOR IMPROVING LOW-TEMPERATURE De-NOx EFFICIENCY AND REDUCING YELLOW PLUME - The present disclosure relates to a method for removing nitrogen oxides (NO | 01-09-2014 |
20140044633 | CATALYTIC REDUCTION OF NOx WITH HIGH ACTIVITY CATALYSTS WITH PROPYLENE REDUCTANT - Methods and systems are provided for selective catalytic reduction of NOx with a low molecular low molecular weight hydrocarbon, e.g., propylene, as a reductant using a catalyst system including two catalysts. An exhaust stream containing an amount of NOx from a combustion operation is provided. A portion of the exhaust stream and a reductant stream including a low molecular weight hydrocarbon is introduced to a first catalytic reactor, which comprises a first catalyst including alumina loaded with silver. The NOx-reduced exhaust stream from the first catalyst is then directed to a second catalyst including zirconia loaded with at least one metal. | 02-13-2014 |
20140044634 | Ammonia Injection System For An HRSG - A heat recovery steam generator includes a casing for receiving exhaust gas from a turbine, a heat exchanger positioned within the casing for thermal communication with the exhaust gas, and an ammonia vapor distributor positioned within the casing. An ammonia vaporization unit is configured for conversion of aqueous ammonia to ammonia vapor and communication of the ammonia vapor to the distributor. A first extraction line operatively connects between the casing and the ammonia vaporization unit for communication of exhaust gas to the ammonia vaporization unit. A second extraction operatively connects between the casing and the ammonia vaporization unit for communication of exhaust gas to the ammonia vaporization unit. A catalytic reduction system is located within the casing and positioned downstream from the distributor for effecting a reaction between the ammonia vapor and NO | 02-13-2014 |
20140044635 | AMMONIA OXIDATION CATALYST, EXHAUST GAS PURIFICATION DEVICE USING SAME, AND EXHAUST GAS PURIFICATION METHOD - An ammonia oxidation catalyst being superior in heat resistance and capable of suppressing by-production of N | 02-13-2014 |
20140056793 | CATALYST SUPPORT MATERIALS, CATALYSTS, METHODS OF MAKING THEM AND USES THEREOF - Catalyst support materials, catalysts, methods of making such and uses thereof are described. Methods of making catalyst support material include combining anatase titania slurry with i) a low molecular weight form of silica; and ii) a source of Mo to form a TiO | 02-27-2014 |
20140093442 | Dual Function Catalytic Filter - A dual function catalytic filter is provided having a soot filter with an inlet and an outlet, a soot oxidation layer on the inlet, wherein the soot oxidation layer comprises a soot oxidation catalytic component consisting essentially of at least one transition metal dispersed on a cerium and zirconium mixed and/or composite oxide, wherein the at least one transition metal is selected from the group consisting of W, Cr, Ce, Mn, Fe, Co, Ni, Cu, and combinations thereof, and an SCR layer coated on the outlet, wherein the SCR layer comprises an SCR catalytic component. Also provided are methods for removing NO | 04-03-2014 |
20140099247 | METHOD FOR IN-DUCT UREA INJECTION FOR SELECTIVE CATALYTIC REDUCTION ON SMALL BOILERS AND COMBUSTION SOURCES - A method for reducing NOx emissions from a lean burn combustor equipped with a NOx reducing exhaust catalyst, includes at least the following steps: (i) generating a computer based model of the geometry of an exhaust system of the combustor; (ii) computing at least one of flue gas velocity profiles and mass flow stream lines for exhaust gas flow through the exhaust system; (iii) inputting injector data comprising at least droplet size and velocity; (iv) modeling droplet trajectories for a plurality of injector locations; (v) modeling at least one flow conditioning device in the exhaust system; and (vi) manipulating the computer based model until an injector location is identified that provides a predicted root mean square (RMS) of reagent at the face of the catalyst that is less than 15%. | 04-10-2014 |
20140099248 | Method for Urea Decomposition and Ammonia Feed to a Selective Catalytic Reduction System - A method of reducing NOx emissions from a lean burn combustion source employs an aqueous solution of reagent that is injected into a continuous decomposition duct at a rate of 0.2-10 gph with a flowing side stream of hot gas at a rate of 150-3000 scfm and a temperature of greater than 700° F. in the decomposition duct such that the aqueous reagent is converted to ammonia gas that is conveyed by the continuous decomposition duct to an ammonia injection grid that is placed in a primary exhaust stream from the combustion source upstream of a NOx reducing catalyst and NOx is reduced. | 04-10-2014 |
20140105803 | METHOD FOR PREPARING CATALYST FOR REMOVING NITROGEN OXIDES USING DRY BALL MILLING - Disclosed is a method for preparing a deNOx catalyst for removing nitrogen oxides (NOx) included in exhaust gas and the like. One embodiment of the present invention discloses a V | 04-17-2014 |
20140134089 | APPARATUS AND METHOD FOR THE SELECTIVE NON-CATALYTIC REDUCTION (SNCR) OF NOX IN INDUSTRIAL CEMENT PRODUCTION PLANTS - The present invention relates to an apparatus and a method for the selective non-catalytic reduction (SNCR) of NO | 05-15-2014 |
20140161700 | METHOD AND SYSTEM FOR NOX REDUCTION IN FLUE GAS - The present invention relates to a method of cleaning a carbon dioxide rich flue gas stream containing oxygen. The method includes heating the flue gas stream to a temperature suitable for selective catalytic reduction (SCR) of NO | 06-12-2014 |
20140170046 | POLLUTION CONTROL SYSTEM FOR KILN EXHAUST - Disclosed is a method and apparatus for the reduction of organic compounds and other emissions from an industrial plant utilizing a cement or minerals kiln that has a high level of organic compound emissions. The invention consists of a filter for the control of particulate emissions which has been treated with a catalyst to provide catalytic destruction of gaseous emissions as process gases are passed through the porous medium of the filter. | 06-19-2014 |
20140199222 | TEMPLATED CATALYST COMPOSITION AND ASSOCIATED METHOD - A composition includes a templated metal oxide substrate having a plurality of pores and a catalyst material includes silver. The composition under H | 07-17-2014 |
20140199223 | TEMPLATED CATALYST COMPOSITION AND ASSOCIATED METHOD - A composition includes a templated metal oxide, at least 3 weight percent of silver, and at least one catalytic metal. A method of making and a method of using are included. | 07-17-2014 |
20140271435 | CATALYSED FILTER BASED ON BIOSOLUBLE FIBERS - Catalysed filter consisting of a filter body of bio-soluble fibres catalysed with a catalyst comprising oxides of vanadium and titanium, wherein the total concentration of alkali metals in the filter body is less than 3000 ppm by weight and/or the total concentration of earth alkali metals in the filter body is less than 20% by weight. | 09-18-2014 |
20140322116 | PHOTOCATALYTIC COATING - De-polluting, self-cleaning coating compositions are disclosed which comprise an organic binder having dispersed therein photocatalytic titanium dioxide particles substantially in anatase form which have an average crystallite size between about 1 nm and about 150 nm and which preferably have photocatalytic activity in the presence of visible light. Advantageously, the coatings of the invention do not require pre-activation to achieve high initial photocatalytic activity against pollutants in the air, such as NO | 10-30-2014 |
20140335004 | SCR CATALYST FOR REMOVAL OF NITROGEN OXIDES - The present invention provides for catalysts for selective catalytic reduction of nitrogen oxides. The catalysts comprise metal oxide supporters, vanadium, an active material, and antimony, a promoter that acts as a catalyst for reduction of nitrogen oxides, and at the same time, can promote higher sulfur poisoning resistance and low temperature catalytic activity. The amount of antimony of the catalysts is preferably 0.5-7 wt. %. | 11-13-2014 |
20140335005 | METHOD OF REMOVING SULFUR OXIDES AND NITROGEN OXIDES IN THE FLUE GAS - The present invention discloses a method of removing sulfur oxides and/or nitrogen oxides in a regeneration flue gas emitted from a regenerator of a catalytic cracking plant and recovering the elemental sulfur and an apparatus therefor. | 11-13-2014 |
20150010455 | MICROWAVE CATALYST AND PREPARATION PROCESS AND USE THEREOF - Provided is a microwave catalyst. The microwave catalyst comprises: i) an active catalyst component comprising a metal and/or a metal oxide; ii) a microwave-absorbing component comprising at least one of CuO, ferrite spinel, and active carbon; and iii) a support. The microwave catalyst can be used for denitration by microwave catalysis, and has advantages such as high denitration efficiency, low energy consumption, environmental friendliness, and low costs. Also provided is a process for preparing the microwave catalyst and the use thereof. | 01-08-2015 |
20150017083 | COATING FOR REDUCING NITROGEN OXIDES - A catalyst coating for use in a hydrolysis catalyst (H-catalyst) for the reduction of nitrogen oxides, a manufacturing method for such a coating, a catalyst structure and its use are described. The H-catalyst includes alkaline compounds, which are capable of adsorbing HNCO and/or nitrogen oxides and which include alkali and alkaline earth metals, lanthanum and/or yttrium and/or hafnium and/or prasedium and/or gallium, and/or zirconium for promoting reduction, such as for promoting the hydrolysis of urea and the formation of ammonia and/or the selective reduction of nitrogen oxides. | 01-15-2015 |
20150023856 | METHOD OF REGENERATING NOx REMOVAL CATALYST AND METHOD OF OPERATING HEAVY-OIL FIRED COMBUSTION APPARATUS - The method includes a pretreatment step during an operation of a boiler in which in a predetermined period of time before shutdown of the boiler, a part of combustion gas that has bypassed an economizer provided in a flue gas duct for flue gas from the boiler is supplied to an upstream of a NO | 01-22-2015 |
20150037232 | ABSORPTION AND OXIDATION OF NO IN IONIC LIQUIDS - The present invention concerns the absorption and in situ oxidation of nitric oxide (NO) in the presence of water and oxygen in ionic liquid compositions at ambient temperature. | 02-05-2015 |
20150037233 | AMMONIA SLIP CATALYST - Provided is an ammonia slip catalyst article having supported palladium in a top or upstream layer for oxidation of carbon monoxide and/or hydrocarbons, an SCR catalyst either in the top layer or in a separate lower or downstream layer, and an ammonia oxidation catalyst in a bottom layer. Also provided are methods for treating an exhaust gas using the catalyst article, wherein the treatment involves reducing the concentrations of ammonia and optionally carbon monoxide and/or hydrocarbons in the exhaust gas. | 02-05-2015 |
20150056118 | FLUE GAS STREAM BYPASS DURING SELECTIVE CATALYTIC REDUCTION IN A POWER PLANT - A system includes a selective catalytic reactor and a bypass line. The selective catalytic reactor is located downstream of a furnace that generates flue gases. The selective catalytic reactor reduces nitrogen oxides to nitrogen. The bypass line is in fluid communication with the selective catalytic reactor. The bypass line contacts an input line to the selective catalytic reactor-, where the bypass line is adapted to handle a volume of flue gases diverted from the selective catalytic reactor. A first control damper is disposed at an inlet to the selective catalytic reactor; and a second control damper is disposed at an inlet to the bypass line. The first control damper and the second control damper interact to divide the flue gas stream between the selective catalytic reactor and the bypass line in a ratio to reduce the amount of sulfur trioxide released from the system to a desirable value. | 02-26-2015 |
20150071841 | Catalyst and process for nitric oxide reduction in a waste gas - In order to improve the lifetime of an SCR catalyst in the waste gas purification by means of the SCR process of waste gas of a biomass combustion plant, the catalyst comprises a sacrificial component selected from a zeolite and/or a clay mineral, in particular halloysite. During operation, catalyst poisons contained in the waste gas, in particular alkali metals, are absorbed by the sacrificial component so that catalytically active centres of the catalyst are not blocked by the catalyst poisons. | 03-12-2015 |
20150078978 | TREATMENT OF NITROGEN OXIDES IN FLUE GAS STREAMS - A method for removing nitrogen oxides in stationary source combustion flue gas streams includes introducing a reagent or a mixture comprising carbamide peroxide and water as a reducing agent. | 03-19-2015 |
20150086457 | SYSTEM AND METHOD FOR TREATING MERCURY IN FLUE GAS - A system for treating mercury in flue gas is provided. The system includes a mercury adsorbent supply device to adsorb the mercury with the mercury adsorbent; a precipitator to collect the mercury adsorbent with adsorbed mercury and soot in the flue gas; a mercury adsorption assistant supply device to remove mercury remaining in the flue gas; and a desulfurization device to remove sulfur oxide (SOx) in the flue gas. | 03-26-2015 |
20150093315 | Tunable AIG for Improved SCR Performance - A system for controlling reagent flow to an exhaust of a lean burn combustion source includes a plurality of decomposition ducts each being connected to at least one injection lance of a reagent injection grid and supplying reagent and hot carrier gas to the injection lance, and at least one metering valve in communication with each of the plurality of decomposition ducts that controls reagent injection rate to the injection lance. A method of controlling a reagent flow to an exhaust of a lean burn combustion source includes providing a reagent injection grid having at least one injection lance, supplying the reagent and hot carrier gas to the reagent injection grid from a plurality of decomposition ducts coupled to the injection grid, and controlling reagent injection rate to the injection grid via at least one metering valve in communication with each of the plurality of decomposition ducts. | 04-02-2015 |
20150098881 | PROCESS FOR REDUCING THE NITROGEN OXIDE OFF-GAS CONCENTRATION IN A NITRIC ACID PLANT DURING SHUT-DOWN AND/OR START-UP, AND NITRIC ACID PLANT SUITABLE THEREFOR - Disclosed is a method and system for reducing the nitrogen oxide off-gas concentration in a nitric acid plant operated under pressure and equipped with a residual gas purification first reactor configured to remove nitrogen oxides from the off-gas during steady-state operation of the plant, and a second reactor configured to remove nitrogen oxides from the off-gas during a start-up and/or shut down of the plant. The method includes, during start-up and/or shut-down of the nitric acid plant, passing pressurized nitrogen-oxide-containing off-gas from the nitric acid plant and a gaseous reducing agent for the nitrogen oxides into the second reactor charged with a catalyst, to reduce the NOx content in the off-gas by at least catalytic reduction. Using the process and system, a colourless start-up and shut-down of nitric acid plants is possible and the nitrogen oxide content in the off-gas during start-up and/or shutdown can be substantially lowered. | 04-09-2015 |
20150290625 | MIXED METAL OXIDIC NANO SHEETS COATED MONOLITHIC CATALYSTS USEFUL FOR THE DECOMPOSITION OF TOXIC N2O AND A PROCESS FOR THE PREPARATION THEREOF - In the present invention there is provided a process for the preparation of nano-oxide coated catalysts useful for the treatment of toxic gases by coating of composite materials containing LDHs over ceramic monolithic substrates. The process combines reacting oxides and salts of metals in a known manner so as to prepare LDHs or mixed metal layered hydroxides such as Ni—Al, Mg—Al, Zn—Cr—Al type possessing positive layer charge, from which a stable gel is prepared by adding swellable clay having a negative charge e.g. montmorillonite, laponite, hectorite etc. in different LDH:clay ratio in an aqueous medium and homogenising the same with high speed homogeniser and ultrasonicator in a high intensity ultrasonic processor. The gel is then dip-coated over cordierite/mulite honey-comb monolithic supports at various dipping and withdrawal rates. The dip-coated monoliths are then dried and calcined at different temperatures to develop the alumino-silicate supported nano-oxide coats over honey-comb ceramic substrates for carrying out decomposition of N2O gas in a He flow in various flow rates at 400 to 600° C. temperature in a cylindrical quartz tube. | 10-15-2015 |
20150298057 | VANADIA-BASED DeNOx CATALYSTS AND CATALYST SUPPORTS - A vanadia-based catalytic composition for reduction of nitrogen oxides includes a titania-based support material; vanadia deposited on the titania-based support material; a primary promoter comprising tungsten oxide, molybdenum oxide or combinations thereof; and an amount of phosphate to achieve a mole ratio of phosphorus to vanadium plus molybdenum of about 0.2:1 or greater. A zirconia, tin or manganese oxide can be added to further inhibit the volatility of molybdenum. Results show low SO | 10-22-2015 |
20150298060 | SYSTEM AND METHOD FOR REDUCING NITROGEN OXIDE IN EXHAUST - A nitrogen oxide (NOx) abatement system is provided. The system includes a power generation device for generating power from a hydrogen-element containing fuel, an exhaust conduit in flow communication with an exhaust stream containing NOx which comes from the power generation device, a plasma reactor for reforming a portion of the hydrogen-element containing fuel with nitrogen to produce ammonia, and a NOx abatement reactor containing ammonia selective catalytic reduction (NH3-SCR) catalyst for receiving the exhaust stream and the ammonia and reducing NOx in the exhaust stream by causing the NOx to react with the ammonia to form nitrogen. | 10-22-2015 |
20150321184 | AMMONIA SLIP CATALYST HAVING PLATINUM IMPREGNATED ON HIGH POROSITY SUBSTRATES - Catalytic articles having a high porosity substrate containing platinum, palladium or a mixture thereof, in walls of the high porosity substrate and an SCR catalyst coating on a wall of the high porosity substrate are disclosed. The platinum, palladium or mixture thereof can be present in the wall of the high porosity support as a metal, or as a supported platinum, palladium or a mixture thereof. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods for producing such articles are described. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described. | 11-12-2015 |
20150343422 | COATED ARTICLES HAVING HIGH KNOx/KSOx RATIOS FOR SELECTIVE CATALYTIC REDUCTION - Articles comprising a catalyst film comprising VOx, MoO | 12-03-2015 |
20150360175 | AIR PREHEATING AND NOX REDUCTION INTEGRATED REACTOR AND REACTION METHOD - An air preheating and denitration integrated reactor and reaction method. The reactor includes a rotary catalyst body, housing arranged outside the rotary catalyst body, and gas inlet and outlet channels on upper and lower surfaces of the housing; the gas inlet and outlet channel is in divided three, namely flue gas, reductant, and air inlet and outlet channels, the rotary catalyst body is cylindrical and includes a central shaft rotor and multiple circular catalyst layers rotate around the central shaft rotor, each circular catalyst layer is divided into air, flue gas and reductant zones by a radial sealing plate and axial sealing plate. In each circular catalyst layer, a catalyst in the reactor alternately circulates in flue gas, reductant and air zones. The catalyst performs heating-reheating-cooling process on catalyst layers along with the reactor rotation, different temperatures and reaction atmospheres in zones conductive of air preheating and denitration. | 12-17-2015 |
20150375207 | METHOD AND CATALYST FOR THE SIMULTANEOUS REMOVAL OF CARBON MONOXIDE AND NITROGEN OXIDES FROM FLUE OR EXHAUST GAS - A method and a catalyst, where flue gas or exhaust gas containing harmful carbon monoxide, organic compounds (VOC) and NO | 12-31-2015 |
20160008759 | Catalytic Article for Treating Exhaust Gas | 01-14-2016 |
20160023192 | EXHAUST GAS PURIFICATION CATALYST - To provide an excellent exhaust gas purification catalyst with satisfactory NO | 01-28-2016 |
20160032207 | NOVEL PROCESS FOR REMOVAL OF NITROGEN FROM NATURAL GAS - A method for removing nitrogen from natural gas includes contacting substantially dry natural gas that contains unwanted nitrogen with lithium metal. The nitrogen reacts with lithium to form lithium nitride, which is recovered for further processing, and pipeline quality natural gas. The natural gas may optionally contain other chemical species that may be reduced by lithium, such as carbon dioxide, hydrogen sulfide, and small amounts of water. These lithium reducible species may be removed from the natural gas concurrently with the removal of nitrogen. The lithium nitride is subjected to an electrochemical process to regenerate lithium metal. In an alternative embodiment, lithium nitride is reacted with sulfur to form lithium sulfide and nitrogen. The lithium sulfide is subjected to an electrochemical process to regenerate lithium metal and sulfur. The electrochemical processes are advantageously performed in an electrolytic cell containing a lithium ion selective membrane separator. | 02-04-2016 |
20160038920 | CATALYSTS POSSESSING AN IMPROVED RESISTANCE TO POISONING - The present invention relates generally to the field of catalysts for use in connection with one or more types of emissions control (e.g., emissions control associated with the combustion of one or more types of fossil fuel) and, in particular to catalyst compositions that possess an improved resistance to at least one type of poisoning. In another embodiment, the catalysts of the present invention are designed to be utilized in conjunction with an SCR and possess an improved resistance to phosphorus poisoning. | 02-11-2016 |
20160045864 | METHOD AND SYSTEM FOR NOx REMOVAL - A method for removing NO | 02-18-2016 |
20160067678 | AN IMPROVED METHOD OF PREPARATION OF NANOPARTICULAR METAL OXIDE CATALYSTS - The disclosure concerns an improved method of preparation of nanoparticular vanadium oxide/anatase titania catalysts having a narrow particle size distribution. In particular, the disclosure concerns preparation of nanoparticular vanadium oxide/anatase titania catalyst precursors comprising combustible crystallization seeds upon which the catalyst metal oxide is coprecipitated with the carrier metal oxide, which crystallization seeds are removed by combustion in a final calcining step. | 03-10-2016 |
20160082389 | METHODS FOR REMOVING CONTAMINANTS FROM EXHAUST GASES - Industrial gas streams such as flue gas streams are treated for nitrogen oxides and other contaminants in dry or semi-dry scrubbers. After the flue gas stream has been contacted with a sorbent, ozone is mixed downstream into the flue gas stream thereby oxidizing the nitrogen oxides and other contaminants. The oxidized contaminants is contacted with sorbent present in the gas stream in the remaining height or volume of the scrubber downstream of ozone injection; and The sorbent is then separated from the flue gas stream leaving the dry or semi-dry scrubber. | 03-24-2016 |
20160089631 | COMBINED DESULFURATION, DENITRATION, AND DEMERCURATION APPARATUS AND METHOD USING SEMI-DRY PROCESS IN CIRCULATING FLUIDIZED BED - A combined desulfuration, denitration, and demercuration apparatus and method using a semi-dry process in a circulating fluidized bed. The apparatus comprises a flue ( | 03-31-2016 |
20160121266 | EXHAUST GAS PURIFICATION SYSTEM AND EXHAUST GAS PURIFICATION METHOD - Provided is a system where a composite catalyst into which an LNT catalyst and an oxidation catalyst are combined, a catalyzed particulate filter, an injector configured to inject a urea water solution into an exhaust gas passage, and an SCR catalyst are arranged in this order in an upstream-to-downstream direction of the flow of the exhaust gas. | 05-05-2016 |
20160129395 | FLUE GAS TREATMENT SYSTEM AND FLUE GAS TREATMENT METHOD - The present invention provides a flue gas treatment system and a flue gas treatment method that enable the stable long-term operation of a plant by reducing NO | 05-12-2016 |
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