Class / Patent application number | Description | Number of patent applications / Date published |
423215500 | Solid component | 33 |
20090053121 | CATALYST FOR OXIDIZING MERCURY METAL, EXHAUST GAS PURIFYING CATALYST COMPRISING CATALYST FOR OXIDIZING MERCURY METAL, AND METHOD FOR PRODUCING SAME - A catalyst mainly containing silicon oxide and vanadium oxide and having an Si/V atomic ratio within the range from 99.5/0.5 to 85/15 is obtained by gelatinizing a liquid mixture of a colloidal silica and a vanadium compound in advance, then mixing the thus-obtained slurry by heating, and finally drying and/or firing the resulting mixture. As a catalyst for oxidizing mercury metal, this catalyst is brought into contact with an exhaust gas containing mercury metal, thereby oxidizing mercury metal. | 02-26-2009 |
20090074642 | SPRAY DRYER ABSORBER AND RELATED PROCESSES - A spray dryer absorber (SDA) system used to reduce the concentration of at least one acid compound in a gas utilizes low or no alkali-containing particulate compounds to prevent cementing during operation. The low or no-alkali-containing compounds may be supplied from external sources and/or from a particulate collection device located downstream of the SDA. | 03-19-2009 |
20090104097 | MERCURY REMOVAL FROM A GAS STREAM - This invention is a novel process for removing volatile mercury from a gas stream to produce a filtered solid. The gas stream is contacted with treating agents which comprise a semivolatile acidic vitrifying compound such as boric acid, water, oxygen-containing gas and a chlorine source. The filtered solids produced in the process have low mercury leachability thereby allowing the solids to be used, for example in flyash-containing concrete. | 04-23-2009 |
20090123352 | Pollution control in wood products dryer operation - Problems associated with deposition of contaminants from air streams in transport ducts in the wood products industry and other sources of such contaminants are at least minimized by close coupling a cyclone separator/scrubber to the source of the air stream. | 05-14-2009 |
20090162269 | REDUCED LIQUID DISCHARGE IN WET FLUE GAS DESULFURIZATION - One aspect of the invention relates to a method for removing contaminants from a flue gas stream ( | 06-25-2009 |
20090297413 | SORBENTS FOR THE OXIDATION AND REMOVAL OF MERCURY - A promoted carbon and/or non-carbon base sorbent are described that are highly effective for the removal of mercury from flue gas streams. The promoted sorbent comprises a carbon and/or non-carbon base sorbent that has reacted with and contains forms of halogen and halides. Optional components may be added to increase and/or preserve reactivity and mercury capacity. These may be added directly with the base sorbent, or in-flight within a gas stream (air, flue gas, etc.), to enhance base sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The promoted sorbent can be regenerated and reused. Base sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active base sorbent into the mercury contaminated gas stream are described. | 12-03-2009 |
20090304565 | METHOD FOR REMOVING LEAD FROM CEMENT BURNING FURNACE - A method to efficiently reduce lead content of cement without exerting influence upon quality of the cement. The method comprises the steps of: controlling O2 concentration of combustion gas in an inlet end of a cement kiln to 5% or lower and/or CO concentration thereof 1000 ppm or more; extracting a part of combustion gas from the cement kiln and collecting dust contained in the combustion gas; and collecting lead from the dust collected. With this, the area where raw material temperature in the cement kiln is between 800° and 1100° can be turned into reducing atmosphere to sharply increase volatilization rate of lead, and collection of lead from the dust allows lead content of cement to efficiently be reduced without exerting influence upon quality of the cement. Together with the control described above, where the inner diameter of the cement kiln is D and the distance from the inlet end of the cement kiln longitudinally into the kiln is L, supplying fuel and/or raw material including inflammable material to the area where L/D of the cement kiln is 0 or more and 12 or lower causes securely maintaining the reducing atmosphere of the area. | 12-10-2009 |
20090311155 | CATALYST FOR OXIDATION OF METAL MERCURY - A catalyst is provided having higher mercury oxidation performance than a conventional catalyst without increasing catalyst quantity or enhancing SO | 12-17-2009 |
20090324471 | MULTIPLE STAGE METHOD OF REFORMING A GAS CONTAINING TARRY IMPURITIES EMPLOYING A ZIRCONIUM-BASED CATALYST - The invention relates to a method of reforming a gas containing tarry impurities, such as the gasification gas obtained by gasifying a fuel. In the method, oxygen or an oxygenous gas ( | 12-31-2009 |
20100047145 | Systems And Methods For Removing Contaminants From Fluid Streams - A system for contaminant removal from a fluid stream comprises a plurality of flow through reactors arranged in stages that are spaced apart from one another, each reactor comprising at least one flow-through monolith configured to react with at least one contaminant in a fluid stream, and a flow control system configured to selectively control through which of the plurality of flow-through reactor stages a fluid stream containing at least one contaminant may pass. | 02-25-2010 |
20100047146 | SORBENTS FOR THE OXIDATION AND REMOVAL OF MERCURY - A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described. | 02-25-2010 |
20100166630 | REACTIVE CHEMICAL CONTAINMENT SYSTEM - A small scale, but effective, reactive chemical containment system includes apparatus and methods for reaction of process gases exhausted from reaction furnaces with a reactant gas in a non-combustible manner to produce and contain particulate or powder byproducts, thereby removing the process gas from the exhaust gas flow. The apparatus provides process gas inlet, treatment reactive gas diffusion, process gas and treatment reactive gas pre-mixing, primary containment, secondary containment, and outlet zones. | 07-01-2010 |
20100202946 | Pollutant Emission Control Sorbents and Methods of Manufacture and Use - Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. Embodiments include brominated sorbent substrate particles having a carbon content of less than about 10%. Other embodiments include one or more oxidatively active halides of a nonoxidative metal dispersed on sorbent substrate particles mixed with activated carbon in an amount up to 30% by weight. Further embodiments include physical blending of a flow modifier into the sorbent composition. | 08-12-2010 |
20100233052 | MERCURY ADSORBENTS COMPATIBLE AS CEMENT ADDITIVES - Solid adsorbents, following their use for mercury removal from flue gas, that do not interfere with the ability of air-entraining additives (such as surfactants) to form stable bubbles when added to fly ash containing the adsorbents. The interference is overcome by heating the materials used in the manufacture of the adsorbent so that magnesium hydroxide and/or one or more alkali compounds containing one or more silicate, aluminate, and/or phosphate moiety, added or already present in the materials, binds multivalent cations present in the materials that could otherwise interfere with the surfactant activity. | 09-16-2010 |
20100239479 | Process For Removing Toxic Metals From A Fluid Stream - A process for removing at least one of As, Cd, Hg and Se from a fluid stream, comprising: (I) providing a plurality of Group A particles of a Group A sorbent material, said Group A sorbent material comprising: an activated carbon matrix defining a plurality of pores; sulfur; and an additive adapted for promoting the removal of at least one of As, Cd, Hg and Se from a fluid stream, wherein the additive is distributed throughout the activated carbon matrix; and (II) contacting the fluid stream with a plurality of Group A particles of the Group A sorbent material. The process can involve powder injection, a packed sorbent bed, a fluidized sorbent bed, and combinations thereof. | 09-23-2010 |
20100284872 | SYSTEMS AND METHODS FOR REDUCING MERCURY EMISSION - Described herein are methods for decreasing the amount of mercury in a flue gas that contains mercury through the use of a molecular halogen. Also described are chemical processes for carrying out the methods, and systems for carrying out the chemical processes. | 11-11-2010 |
20100284873 | REMOVING A HEAVY METAL FROM A COMBUSTION GAS - This invention is directed to a process and chemical composition effective in removing heavy metal from combustion gas. The process and chemical composition are particularly effective in removing undesirable heavy metal from combustion gases that are formed from the combustion of coal. The chemical composition that is used is an aqueous composition of at least one alkali metal sulfide, and at least one alkali metal or alkaline earth metal buffer in amounts that are effective in removing at least a majority of the heavy metal from the combustion gas. | 11-11-2010 |
20100284874 | Method for treating fly ash - A method for treating fly ash from incineration plants having at, least one combustion chamber includes precipitating fly ash in a dust separator, and treating the fly ash using a gaseous reducing agent at a temperature between 600 and 700° C. so as to selectively convert a metal sulfate into at least one of a sulfide and a metallic form of the metal sulfate. | 11-11-2010 |
20100316546 | MERCURY ABSORPTION SYSTEM FO INDUSTRIAL KILN APPLICATIONS - Disclosed is a method for the reduction of mercury emissions from an industrial plant utilizing a cement or minerals kiln that has a high level of mercury. The invention allows for the repeated treatment of a gas stream to reduce the level of mercury and other pollutants through reduction steps, allowing targeted treatment of specific compounds. The invention utilizes multiple sorbent injections for the step-wise reduction in pollutants. Utilizing the multiple stages of reaction, very high levels of mercury emissions may be controlled to greater reduction percentages than existing methods. | 12-16-2010 |
20110020202 | SORBENT BODIES COMPRISING ACTIVATED CARBON, PROCESSES FOR MAKING THEM, AND THEIR USE - Sorbent bodies comprising activated carbon, processes for making them, and methods of using them. The sorbent bodies can be used to remove toxic elements from a fluid, such as from a gas stream. For instance, the sorbent bodies may be used to remove elemental mercury or mercury in an oxidized state from a coal combustion flue gas. | 01-27-2011 |
20110038772 | METHOD AND DEVICE FOR COARSE SEPARATION OF SOLID PARTICLES FROM SOLID-LADEN GASES - The invention relates to a method and a device for the coarse separation of solid particles from solid-laden gases. The invention further relates to a method for treating particulate feed materials by means of treatment gases in a reactor, particularly in a fluidization zone at an increased temperature. Due to a blind hole-like line extension, it is possible to separate solid particles from a solid-laden gas. | 02-17-2011 |
20110081286 | SCRUBBER FOR REMOVING HEAVY METALS FROM GASES - A wet scrubber, a liquor for a wet scrubber, and a power-plant comprising a wet scrubber are described. | 04-07-2011 |
20110206585 | METAL RECOVERY METHOD, METAL RECOVERY APPARATUS, GAS EXHAUST SYSTEM AND FILM FORMING DEVICE USING SAME - A metal recovery apparatus recovers metal components from an exhaust gas exhausted from a processing chamber in which a thin film is formed on the surface of a target substrate by using a source gas formed of an organic metal compound serving as a source, and scrubs the exhaust gas. The metal recovery apparatus | 08-25-2011 |
20110243819 | METAL SCAVENGING POLYMERS AND USES THEREOF - Uses for a composition comprising a polymer derived from at least two monomers: acrylic-x and an alkylamine, wherein said polymer is modified to contain a functional group capable of scavenging one or more compositions containing one or more metals are disclosed. These polymers have many uses in various mediums, including wastewater systems. | 10-06-2011 |
20120100054 | HOT-SIDE METHOD AND SYSTEM - The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions. | 04-26-2012 |
20120171092 | HIGH-EFFICIENCY, HOT TRAP APPARATUS AND METHOD - A hot trap for removing a reactive constituent gas from a gas stream via chemical reaction and/or thermal disassociation includes a trap chamber with a heater assembly and a trap medium in its core inner portion and annular pre-heating and counterflow heating ducts in its outer and intermediate portions surrounding the core inner portion for heating an inflowing gas stream and conservation of heat energy in the trap as well as to maintain lower temperatures on external surfaces. | 07-05-2012 |
20120263634 | GAS STREAM TREATMENT PROCESS - A process of treating a gas stream containing at least one mercury compound or species, the process comprising: applying a composition into said gas stream ahead of a particulate matter collection device, wherein said composition contains a compound having the following formula (SiO | 10-18-2012 |
20130045149 | OXALATE SORBENTS FOR MERCURY REMOVAL - Disclosed are oxalate sorbent compositions, methods for their manufacture, and methods for removing mercury species from waste streams employing oxalate sorbent compositions. | 02-21-2013 |
20150050202 | METHOD TO REDUCE MERCURY, ACID GAS, AND PARTICULATE EMISSIONS - A method is provided in which a contaminated waste gas, comprising particulates, an acid gas, and mercury, is contacted with a mercury removal agent to remove or cause the removal of mercury from the waste gas and a flue gas conditioning agent to alter at least one of a resistivity and cohesivity of the particulates. At least one of the following statements is true: the flue gas conditioning agent is substantially free of SO | 02-19-2015 |
20160121264 | Injection of Sorbents in Ductwork Feeding Wet Scrubbers for Mercury Emission Control - Methods and systems are described for more effectively sequestering or removing mercury from flue gases. This is accomplished by feeding an adsorbent into the flow of flue gas in ductwork leading into a scrubber housing containing a wet scrubber composition and providing a residence time sufficient to enable the mercury to be sequestered by the adsorbent. | 05-05-2016 |
20160158695 | AIRSTREAM TREATMENT APPARATUS (ATA) AND METHODS OF USE THEREOF - An exhaust treatment apparatus (ATA) is provided for reducing one or more components of the airstream directed through the ATA. The ATA includes an airstream inlet, an airstream outlet, and an airstream path directed through the ATA from the airstream inlet to the airstream outlet, and at least one corona/NTP generating region for altering a composition of an airstream passing through the ATA. The ATA includes an outer enclosure forming one electrode surface and a second electrode surface positioned within and electrically insulated from the outer enclosure electrode surface, where an area between the outer enclosure electrode surface and the second electrode surface forms at least a part of the airstream path directed through the ATA. The second electrode surface comprises a series of ridges positioned along the airstream path and directed towards the outer enclosure that encourage corona generation. A method is provided for using the ATA for treating an airstream, including an exhaust airstream from a combustion engine, as well as an exhaust airstream from a compression-ignition (diesel) engine. | 06-09-2016 |
20160168494 | Method for Purifying Synthesis Gases | 06-16-2016 |
20160175771 | PROCESS FOR CAPTURING A HEAVY METAL CONTAINED IN A MOIST GAS, INTEGRATING A HEAT PUMP TO COOL THE GAS BEFORE ELIMINATING WATER | 06-23-2016 |