Class / Patent application number | Description | Number of patent applications / Date published |
095133000 | Metal or metal containing compound sorbed | 38 |
20090165649 | METHOD OF TREATING FLUID CONTAINING VAPOR PHASE METALS, VAPOR PHASE METAL COMPOUNDS, OR BOTH - Perlite, particularly, perlite in powdered form, is employed to adsorb metals and metal compounds from fluids, in particular gases at elevated temperature. In select embodiments, powdered perlite is treated to expand its surface area and injected into a fluid stream, such as flue gas, held for a specific retention period, and removed for subsequent disposal. In other embodiments powdered perlite is provided in an adsorption bed. Fluid containing metals or metal compounds in vapor form is permitted to pass through the adsorption bed until the expanded perlite powder is saturated (exhausted) with the metal and metal compounds adsorbed thereon. The perlite is then replaced, disposing of the exhausted perlite. Treatment of perlite by boiling with sulfuric acid or suspending in a suspension of sulfur in carbon disulfide has been shown to significantly expand the surface area of perlite, thus increasing the efficiency of the process. | 07-02-2009 |
20130098243 | METHOD OF REMOVING METAL CARBONYLS FROM GASEOUS STREAMS AND METAL CARBONYL SORBENT - Method of removing metal carbonyls from a gaseous stream comprising contacting the metal carbonyl containing gaseous stream at elevated temperature with a particulate sorbent comprising modified copper aluminum spinel, wherein the copper aluminium spinel has been modified by a thermal treatment in a reducing atmosphere and a particulate sorbent for use in a method comprising a copper aluminium spinel being modified by thermal treatment in a reducing atmosphere at a temperature of between 250 and 500° C. | 04-25-2013 |
095134000 | Mercury sorbed | 36 |
20080289498 | PROCESS FOR THE PRODUCTION OF CARBONACEOUS ADSORPTION AGENTS DOPED WITH ELEMENTARY SULFUR AND A PROCESS FOR WASTE GAS CLEANING USING SUCH ADSORPTION AGENTS - The invention concerns a process for the production of carbonaceous adsorption agents doped with elementary sulfur, in which sulfur is mixed with the adsorption agent, the mixture is heated to a temperature of between 120° C. and 150° C. and the temperature is maintained over a period of about an hour. The process is distinguished in that heating of the mixture is effected under a controlled oxygen-bearing atmosphere. The invention further concerns a process for waste gas cleaning using carbonaceous absorption agents doped with elementary sulfur. Preferably brown coal coke is used as the adsorption agent. | 11-27-2008 |
20090007785 | Method for removing mercury vapor in gas - When sulfur oxides are present in mercury vapor-containing gas, the adsorption of mercury vapor by activated carbon is inhibited. Therefore, there has been demand for development of a method for effective adsorption removal of mercury vapor even in the coexistence of sulfur oxides. | 01-08-2009 |
20090056543 | Method for removing mercury from flue gas after combustion - A method of removing mercury from flue gases from combustion plants, such as for example power plants or waste incineration plants, is achieved in which mercury-containing flue gases are brought into contact with an adsorption reagent either directly or indirectly by being contained in an absorption reagent, whereby mercury is substantially adsorbed by the adsorption reagent during this contact. After adsorption has occurred the adsorption reagent is separated from the flue gases and subsequently from the absorption reagent and added to an aqueous solution containing an oxidizing agent, whereby the adsorbed mercury dissolves as Hg | 03-05-2009 |
20090158929 | Method of Reducing an Amount of Mercury in a Flue Gas - The subject matter disclosed herein relates to a method of reducing an amount of mercury discharged to an environment in a flue gas ( | 06-25-2009 |
20090193968 | Method and apparatus for removing contaminants from industrial processing plants - A method and apparatus for removing purifying vaporizable contaminants such as mercury from a particulate material. Particulate material is first contacted with heated gases to vaporize the contaminants and entrain the material in the gases. The gases are directed to a first dust collector to remove the entrained particulates, after which a sorbent or chemical reagent is injected in the gases to interact with the contaminants and form a contaminant containing product that is entrained in the gases. The product is then separated from the gases in a second collector. | 08-06-2009 |
20090249954 | Method for managing the use of flow-through monolithic sorbents for the sorption of a trace contaminant from a fluid stream - A method for managing the use of flow-through monolithic sorbents for the sorption of a trace contaminant from a fluid stream, which comprises:
| 10-08-2009 |
20100005963 | SORBENT COMPOSITION - The invention provides an apparatus and methods for removing heavy metals and heavy metal-containing compounds from fluid streams. The invention also provides new uses and methods for removing heavy metals and heavy metal-containing compounds from a natural gas stream, or a gas stream produced during the combustion or gasification of a fossil fuel, such as coal or petroleum fuels or oil. | 01-14-2010 |
20100018395 | Method for Capturing Mercury from Flue Gas - The present invention relates to use of carbon-based sorbents such as activated carbon for controlling vapor phase mercury emissions in coal-fired power plant flue gases or waste incineration flue gases. The invention features new methods that improve the performance of carbonaceous sorbents for mercury control compared to the previous methods. One method consists of injecting the sorbent (consisting of at least some carbonaceous material) into the flue gas where the flue gas temperature is at a value above about 1100° F. and below about 2000° F. The invention also consists of injecting the sorbent within or upstream of an economizer section in a coal-fired power boiler. Injecting the sorbent at the locations indicated above, rather than further downstream, provides increased residence time for contact between the flue gas and the sorbent resulting in increased mercury capture, improved sorbent utilization, and improved fly ash properties. | 01-28-2010 |
20100050868 | MERCURY ABSORPTION USING CHABAZITE SUPPORTED METALLIC NANODOTS - A method of adsorbing mercury includes the use of silver nanodots formed on chabazite as a sorbent. The silver nanodots may be formed on chabazite by ion-exchange followed by activation. | 03-04-2010 |
20100050869 | Plate System For Contaminant Removal - Plate systems and methods of using them. The plate systems may be used, for example, for the removal of metallic or semi-metallic contaminants from a fluid stream. | 03-04-2010 |
20100083830 | REMOVAL OF HEAVY METALS FROM HYDROCARBON GASES - A process is disclosed for removing heavy metals from a hydrocarbon gas stream by contacting the hydrocarbon gas stream, which contains a heavy metal and less than 10 ppm oxidizing compounds, with a composition containing a molecular sieve and sulfur resulting in a treated stream containing less heavy metal than the hydrocarbon gas stream; wherein the molecular sieve contains alumina, silica, and iron, and optionally copper and zinc. Optionally, the hydrocarbon gas stream can also contain a sulfur compound. | 04-08-2010 |
20100095843 | Air Pollution Control Filter Elements for Filtration Systems - An improved filtration apparatus, filtering method and filtering material for capturing mercury and other pollutants in pollutant-laden fluid streams such as flue gases generated by process gas streams are disclosed. The improved filtration system may include two pollutant remediation layers, an upstream layer capable of filtering particulates and a downstream layer capable of adsorbing and/or catalyzing pollutants such as mercury, dioxin, furans, and NO | 04-22-2010 |
20100199841 | Composite Comprising An Inorganic Substrate With A Coating Comprising Activated Carbon And A Metal Sulfide - A composite comprising an inorganic substrate with a coating comprising activated carbon and a metal sulfide. The composite may be used, for example, for the removal of a contaminant, such as mercury, from a fluid stream. | 08-12-2010 |
20100212494 | Method for Eliminating Mercury from a Gas Containing CO2 and Oxygen - A method for the purification of a feed gas stream at a pressure ≧3 bar, comprising at least 1% by volume of oxygen (O | 08-26-2010 |
20100229722 | METHOD FOR REMOVING HEAVY METALS FROM GASES - In the removal of heavy metals such as mercury from fluid streams, especially coal-derived syn-gas streams, a sulphided palladium-containing absorber gives improved results by way of mercury-absorption capacity if the absorber is sulphided. | 09-16-2010 |
20100263533 | Methods Of Making And Using Activated Carbon-Containing Coated Substrates And The Products Made Therefrom - The present disclosure relates to methods of making and using activated carbon-containing coated substrates, and products made therefrom. | 10-21-2010 |
20100288124 | Sulfur functionalized polymers for separation of metals from gas and liquid and methods for preparation thereof - Methods of preparation and application of sulfur functionalized polymers. More particularly, triazine, cyclotriphosphazene and/or phenyl derivatives can be polymerized to form sulfur functionalized polymers. The materials can be used for separating heavy metals from gas and liquid. The invention is a solid extractant or sorbent that upon exposure or contact with a gas and/or liquid can remove contaminates or impurities. The material can be employed as a solid agent to remove mercury and other heavy metal from combustion, calcinations and/or industrial gases. Also, the material can be applied as extracting agent for removing mercury and other heavy metal from a liquid phase. Further, the material can be used for removing/recovering hazardous elements from radioactive nuclear waste; or can be used for removing organic compounds from gases and liquids. | 11-18-2010 |
20110072966 | FIRE BRICK MERCURY REMOVAL PROCESS FROM FLUE GAS - A method and system for removal of in most instances 70% of mercury contamination from flue gas and in many instances 90-95%. It involves passing hot flue gas through a honeycomb filter brick comprising a ceramic honeycomb of MgAl | 03-31-2011 |
20110162524 | SORBENT COMPOSITIONS AND PROCESSES FOR REDUCING MERCURY EMISSIONS FROM COMBUSTION GAS STREAMS - Compositions, and processes utilizing such compositions, are provided for reducing mercury emissions from combustion gases. Such compositions comprise a sorbent and a brominated organic compound. | 07-07-2011 |
20110219951 | Method and mitigating mercury vapor emissions during storing, staging, handling and transportation of mercury containing universal waste - A method for mitigating mercury vapor emissions during storing, staging, handling and transportation of an unbroken mercury containing universal waste lamp. The method includes the step of: placing the unbroken mercury containing universal waste lamp wholly within a container for storage, staging, handling or transportation. The container has an opening for allowing the unbroken mercury containing universal waste lamp to be placed wholly within the container. The container also has impervious wall structure for preventing mercury vapors from passing therethrough. The method also includes the step of: placing a predetermined amount of an activated carbon media having an affinity for mercury vapors within the container to passively adsorb mercury vapors escaping from incidental breakage of the mercury containing universal waste lamp. The next step involves closing the opening in the container such that when the container is closed the container is substantially airtight and vapors are prevented from passing from an interior to an exterior of said container and wherein the predetermined amount of activated carbon media within the closed container furthermore mitigates mercury vapors from inadvertently escaping from the container when the container is again opened | 09-15-2011 |
20110296991 | HEAVY METAL REMOVAL METHODS AND SYSTEMS - A support impregnated with selenium and capable of effectively removing a heavy metal from a process stream that is at an ambient temperature or is at an elevated temperature. | 12-08-2011 |
20110315013 | Coupling Agent-Reacted Mercury Removal Media - The use of a coupling agent containing a mercapto, disulfide, tretrasulfide and/or polysulfide end group provides a mercury removal media having increased reactivity, stability, and mercury removal ability. The mercury removal media described herein is prepared by reacting an organophilic clay containing onium ions with a mercapto, disulfide, tetrasulfide, and/or polysulfide end moiety. Alternatively, the clay can be made organophilic by onium ion reaction prior to or simultaneously with the coupling reaction of the mercapto- or sulfide-end group-containing coupling agent. | 12-29-2011 |
20120006196 | Capture of mercury from a gaseous mixture containing mercury - Compositions are provided, derived from chemical treatment of carbonaceous fiber felt forms or other carbonaceous substrates, that exhibit both high efficiency and capacity for mercury capture from flue gases and the like. These compositions are superior to known compositions, particularly with regard to their performance under severely deactivating conditions. The compositions result from the pyrolysis of certain specific sulfur bearing compounds while in contact with activated carbon powders, activated carbon fibers, or with other carbonized forms. Precursor compounds to these novel mercury-binding compositions contain structural moieties that may be represented as: | 01-12-2012 |
20120073439 | SUPPORTED SILVER SULFIDE SORBENT - Synthesis of a support material impregnated with silver sulfide provides a sorbent composition. Generating the silver sulfide relies on reaction of sulfur dioxide and one of hydrogen gas and hydrogen sulfide in presence of the support material following silver loading of the support material. Contacting a fluid stream with the sorbent composition removes heavy metal from the fluid stream. | 03-29-2012 |
20120132073 | Method of Making an Activated Carbon Substrate Having Metal Sulfide - A method of making a sorbent of an activated carbon substrate having a metal sulfide, which may be useful, for example, for removing a contaminant from a fluid stream. | 05-31-2012 |
20120167762 | Solid Mineral Composition, Method for Preparing Same and Use Thereof for Reducing Heavy Metals in Flue Gas - The invention relates to a solid mineral composition of heavy metals, in particular mercury, in flue gas, to a method for preparing such a solid mineral compound and to the use thereof for reducing heavy metals, in particular mercury, in flue gas, by placing the flue gas in contact with the solid mineral composition. | 07-05-2012 |
20120167763 | METHOD FOR PURIFYING A GAS STREAM INCLUDING MERCURY - The present invention relates to a method for purifying a gas stream including CO | 07-05-2012 |
20120266751 | METHOD FOR THE REMOVAL OF MERCURY FROM A STREAM OF FLUE GAS OBTAINED FROM THE COMBUSTION OF COAL - A method for the removal of mercury from a stream of flue gas obtained from the combustion of at least one coal type having an ASTM D388 coal rank of <3 includes the steps of introducing a kaolin or metakaolin-containing sorbent into the stream of flue gas and contacting the mercury with the kaolin or metakaolin-containing sorbent at a point where both the kaolin or metakaolin-containing sorbent and active free silica are present in the stream. The temperature of the flue gas is at least 900° C. The active free silica content of the flue gas resulting from the combustion of the coal is supplemented by the introduction of added active free silica such that the weight percentage of the total amount of active free silica relative to the weight of kaolin or metakaolin is at least 10%, the weight of any kaolin being expressed as the weight of metakaolin. | 10-25-2012 |
20120266752 | METHOD FOR THE REMOVAL OF MERCURY FROM A STREAM OF FLUE GAS OBTAINED FROM THE COMBUSTION OF COAL AND SORBENT-MIXTURE - A method for the removal of mercury from a stream of flue gas obtained from the combustion of at least one coal includes the steps of introducing a kaolin- or metakaolin-containing sorbent into the stream of flue gas for removing mercury from the stream of flue gas and contacting the mercury with the kaolin or metakaolin-containing sorbent in the presence of active free silica. Further to the introduction of the kaolin- or metakaolin-containing sorbent into the stream of flue gas, a source of active free silica is introduced so as to increase the active free silica content of the flue gas resulting from the combustion by the introduction of additional free silica. The flue gas has a temperature of at least approximately 900° C., for example >1000° C. at the point where the kaolin or metakaolin-containing sorbent is introduced. | 10-25-2012 |
20130104736 | Filtration Module | 05-02-2013 |
20130152788 | COMPOSITION AND PROCESS FOR MERCURY REMOVAL - A process for removing mercury from a gas or liquid phase, wherein the gas or liquid phase containing mercury is placed in contact with a composition comprising a precipitated metal sulfide. The precipitated metal sulfide may be made by the process of combining a metal source, sulfide source, and modifier to form the precipitated metal sulfide. The metal source may comprise iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, silver, or gold salts. The metal salt may be selected from metal nitrate, metal sulfate, metal phosphate, metal acetate, metal carbonate, metal hydroxide, metal ammonium carbonate, and metal hydroxycarbonate. The sulfide source is selected from hydrogen sulfide (H | 06-20-2013 |
20130220120 | Reduction of Mercury Emissions From Cement Plants - This invention provides methods for reducing emissions of mercury from a cement plant comprising at least a kiln ( | 08-29-2013 |
20130291722 | A METHOD OF CLEANING A CARBON DIOXIDE CONTAINING GAS, AND A CARBON DIOXIDE PURIFICATION SYSTEM - A gas purification system for cleaning a carbon dioxide rich flue gas generated in a boiler combusting a fuel in the presence of a gas containing oxygen. The gas purification system includes a compressor for compressing the carbon dioxide rich flue gas, a first gas cooler for cooling the compressed carbon dioxide rich flue gas, a mercury adsorber arranged downstream of the first gas cooler for removing at least a portion of a mercury content of the cooled compressed carbon dioxide rich flue gas, a second gas cooler arranged downstream of the mercury adsorber for further cooling the compressed carbon dioxide rich flue gas, and a gas drier for removing at least a portion of a water content of the further cooled compressed carbon dioxide rich flue gas. | 11-07-2013 |
20150114225 | Method for the purification of flue gas, filter system therefor, and retrofit unit - A flue gas is cleaned by feeding same to a filtering separator. The filtering separator is accommodated in a housing, and the housing has a pre-filter side ahead of the filtering separator and a clean side following the filtering separator in the flue gas flow direction. A filter element has an adsorbent formed of dust-free spheroidal charcoal on the clean side of the housing. The flue gas flows through the adsorbent in the filter element. Harmful substances from the group including mercury and/or dioxin and/or furan and/or further heavy metals are thereby removed from the flue gas. | 04-30-2015 |
20150135953 | PARTICULATE MATTER AND METHODS OF OBTAINING SAME FROM A KRAFT WASTE RECLAMATION - The present invention relates in general to a method of producing activated carbon. Dregs are removed from a pulp mill green liquor clarifier and washed with an acid to produce an activated carbon. The activated carbon slurry can be used to remove mercury from a waste gas stream. | 05-21-2015 |
20160096137 | NON-EXTRUDED ACTIVATED CARBON HONEYCOMB STRUCTURES - A non-extruded filter article, including:
| 04-07-2016 |