Mercury Sorbed Patents (Class 95/134)
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Patent number: 8598073Abstract: The present disclosure relates to methods of making and using activated carbon-containing coated substrates, and products made therefrom.Type: GrantFiled: April 20, 2009Date of Patent: December 3, 2013Assignee: Corning IncorporatedInventors: Kishor Purushottam Gadkaree, Andrew Fleitz Husted, James Robert Lim
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Publication number: 20130291722Abstract: 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.Type: ApplicationFiled: July 12, 2013Publication date: November 7, 2013Inventor: Olaf STALLMANN
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Patent number: 8574349Abstract: 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.Type: GrantFiled: April 27, 2012Date of Patent: November 5, 2013Assignee: Voith Patent GmbHInventor: Joseph J. P. Biermann
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Patent number: 8568514Abstract: 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.Type: GrantFiled: July 23, 2013Date of Patent: October 29, 2013Assignee: Albemarle CorporationInventor: Christopher J. Nalepa
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Patent number: 8551216Abstract: Systems and methods for treating a fluid with a body are disclosed. Various aspects involve treating a fluid with a porous body. In select embodiments, a body comprises ash particles, and the ash particles used to form the body may be selected based on their providing one or more desired properties for a given treatment. Various bodies provide for the reaction and/or removal of a substance in a fluid, often using a porous body comprised of ash particles. Computer-operable methods for matching a source material to an application are disclosed. Certain aspects feature a porous body comprised of ash particles, the ash particles have a particle size distribution and interparticle connectivity that creates a plurality of pores having a pore size distribution and pore connectivity, and the pore size distribution and pore connectivity are such that a first fluid may substantially penetrate the pores.Type: GrantFiled: February 3, 2010Date of Patent: October 8, 2013Assignee: Errcive, Inc.Inventors: Charles E. Ramberg, Stephen A. Dynan, Jack A. Shindle
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Patent number: 8545598Abstract: A mercury removal system and methods thereof include at least one supply system, at least one cooling system and at least one separation system. The supply system is connected to introduce at least beneficiated fly ash particles into an exhaust stream. The exhaust stream comprises at least one exhaust gas and mercury and at least a portion of the mercury in the exhaust stream adheres to the introduced beneficiated fly ash particles. The cooling system cools the exhaust stream before or after the connection of the supply system to the exhaust stream. The separation system separates from the exhaust stream and outputs at least a portion of the introduced beneficiated fly ash particles with the adhered mercury.Type: GrantFiled: June 19, 2007Date of Patent: October 1, 2013Assignee: PMI Ash Technologies, LLCInventors: Joseph W. Cochran, S. Frank Kirkconnell, Vincent M. Giampa
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Publication number: 20130245140Abstract: The present application relates to novel chelate resins which contain, as a functional group, quaternary nitrogen atoms in structures of the general formula (I) in which at least one of the radicals R1 to R3 represents an optionally substituted radical of the series consisting of picolyl, methylquinoline or methylpiperidine, m represents an integer from 1 to 4 and M represents the polymer matrix and X represents a counterion of the series consisting of hydroxide OH?, halide, preferably Cl?, Br?, or sulphate SO42?, a process for their preparation and the use thereof, in particular the use of the novel chelate resins in hydrometallurgy and electroplating.Type: ApplicationFiled: May 8, 2013Publication date: September 19, 2013Applicant: LANXESS Deutschland GmbHInventors: Reinhold KLIPPER, Michael SCHELHAAS, Stefan NEUMANN, Duilio ROSSONI, Wolfgang ZARGES
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Patent number: 8535422Abstract: Metal sorbent compositions for removing a metal contaminant from a fluid, such as removal of mercury from a coal-fired flue gas stream, and methods for making and using the same are provided. The subject metal sorbent compositions comprise an effective amount of an aqueous dispersion of microfine elemental sulfur particles on an adsorbent substrate, and optionally, a metal capture enhancing agent such as a halogen source and/or an oxidizing agent in an amount providing a metal capture enhancing effect on the metal sorbent composition. The subject metal sorbent compositions are prepared by drying an aqueous dispersion of microfine elemental sulfur particles on an adsorbent substrate, such as on a substrate of microfine particles of a refractory material and the like. Also provided are kits for use in preparing the subject compositions, and compositions produced by the methods. The subject compositions, kits and systems find use in a variety of different applications.Type: GrantFiled: January 25, 2010Date of Patent: September 17, 2013Assignees: St. Cloud Mining Company, Via Consulting, LLCInventors: Francis A. Via, William Ahrens, Daniel T. Eyde
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Patent number: 8535416Abstract: A method for the purification of a feed gas stream at a pressure ?3 bar, comprising at least 1% by volume of oxygen (O2) and at least 75% by volume of CO2 and mercury, enabling the mercury to be eliminated is provided.Type: GrantFiled: July 8, 2008Date of Patent: September 17, 2013Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Philippe Court, Arthur Darde, Vladimir Hasanov, Christian Monereau, Serge Moreau, Jean-Pierre Tranier
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Patent number: 8524179Abstract: The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.Type: GrantFiled: October 25, 2011Date of Patent: September 3, 2013Assignee: ADA-ES, Inc.Inventors: Michael D. Durham, Sharon Sjostrom, Kenneth E. Baldrey
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Publication number: 20130220120Abstract: This invention provides methods for reducing emissions of mercury from a cement plant comprising at least a kiln (6), a particulate collection device (10), collected particulates, an exhaust gas stream (8b), a heater, and a mercury scrubber, wherein the heater and mercury scrubber are upstream from the kiln. The methods comprise directing the collected particulates through the heater, to form volatilized mercury species from the collected particulates; directing the collected particulates from the heater downstream toward the kiln; and directing the volatilized mercury species to the mercury scrubber. The exhaust gas stream (8c) exits the particulate collection device and is not directed into the heater. Optional steps include injecting a mercury sorbent at one or more points between the kiln and the particulate collection device.Type: ApplicationFiled: December 9, 2011Publication date: August 29, 2013Inventors: Xin Liu, Jon E. Miller, Zhong Tang, Qunhui Zhou, Yinzhi Zhang, Kara M. Thalls
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Patent number: 8518154Abstract: 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.Type: GrantFiled: September 24, 2009Date of Patent: August 27, 2013Assignee: Albemarle CorporationInventor: Christopher J. Nalepa
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Patent number: 8512655Abstract: 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.Type: GrantFiled: March 22, 2012Date of Patent: August 20, 2013Assignee: Energy & Environmental Research Center FoundationInventors: Edwin S. Olson, Michael J. Holmes, John Henry Pavlish
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Patent number: 8506916Abstract: The disclosure provides methods and systems for sequestering and/or reducing sulfur oxides, nitrogen oxides and/or carbon dioxide present in industrial effluent fluid streams. A solid particulate material comprising a slag component, a binder component (distinct from the slag component), and optionally water is formed and then contacted with the effluent fluid stream to reduce at least one of the sulfur oxides, nitrogen oxides, and/or carbon dioxide. The contacting of the effluent stream may occur in a packed bed reactor with the solid dry particulate material. Methods of reducing pollutants from exhaust generated by combustion sources, lime and/or cement kilns, iron and/or steel furnaces, and the like are provided.Type: GrantFiled: July 27, 2012Date of Patent: August 13, 2013Assignee: C-Quest Technologies LLCInventor: Douglas C. Comrie
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Patent number: 8500881Abstract: The present invention discloses a carbon dioxide capture power generation system provided with a boiler to combust a fuel in the oxygen atmosphere, a carbon dioxide capture equipment to remove carbon dioxide in the wake flow of the boiler, a piping branching from the wake flow of the boiler to recycle the combustion exhaust gas to the boiler, and a desulfurization equipment to remove sulfur oxides and a sulfuric acid removal equipment to remove a sulfuric acid gas in the upstream of carbon dioxide capture equipment and in the wake flow of the boiler.Type: GrantFiled: August 19, 2010Date of Patent: August 6, 2013Assignee: Hitachi, Ltd.Inventors: Hisayuki Orita, Masaaki Mukaide, Nobuyuki Hokari, Tsuyoshi Shibata, Masayuki Taniguchi
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Patent number: 8496894Abstract: The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.Type: GrantFiled: October 25, 2011Date of Patent: July 30, 2013Assignee: ADA-ES, Inc.Inventors: Michael D. Durham, Sharon Sjostrom, Kenneth E. Baldrey
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Patent number: 8496739Abstract: A filter apparatus comprising an organic antioxidant. The filter apparatus may be use, for example, in the removal of a toxic metal from a fluid stream.Type: GrantFiled: August 22, 2011Date of Patent: July 30, 2013Assignee: Corning IncorporatedInventors: Steven Bruce Dawes, Benedict Yorke Johnson, Wanda Janina Walczak
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Patent number: 8496734Abstract: A sorbent structure comprising a continuous activated carbon body in the form of a flow-through substrate; and an additive provided on the flow-through substrate, wherein the additive is capable of enhancing the sorption of CO2 on the sorbent structure. Methods of making the sorbent structure, its use for CO2 capture, and methods for regenerating the structure for further use.Type: GrantFiled: February 26, 2009Date of Patent: July 30, 2013Assignee: Corning IncorporatedInventors: Kishor Purushottam Gadkaree, Youchun Shi
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Patent number: 8492509Abstract: 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.Type: GrantFiled: May 12, 2010Date of Patent: July 23, 2013Assignee: Chemnano Materials, Ltd.Inventor: Pingshan Wang
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Patent number: 8480791Abstract: 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. The methods include injecting a sorbent consisting essentially of recovered and separated fluid cracking catalyst particles into a flue gas stream.Type: GrantFiled: March 31, 2010Date of Patent: July 9, 2013Assignee: BASF CorporationInventors: Xiaolin D. Yang, David M. Stockwell, Pascaline H. Tran, Lawrence Shore
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Publication number: 20130157845Abstract: Activated carbon is rendered more thermally stable by exposure to a non-halogenated additive, and optionally to a halogen and/or a halogen-containing compound. Such treated carbon is suitable for use in mitigating the content of hazardous substances in flue gases, especially flue gases having a temperature within the range of from about 100° C. to about 420° C.Type: ApplicationFiled: August 19, 2011Publication date: June 20, 2013Applicant: ALBEMARLE CORPORATIONInventors: Christopher J. Nalepa, William S. Pickrell, Gregory H. Lambeth, Qunhui Zhou
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Publication number: 20130152788Abstract: 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 (H2S), carbonyl sulfide (COS), salts of sulfide (S2?), salts of hydrosulfide (HS?), and salts of polysulfide (Sn2?). The modifier may be selected from alumina, silica, aluminosilicate, clay, zeolites, carbon, cement, titania, zirconia.Type: ApplicationFiled: December 3, 2012Publication date: June 20, 2013Applicant: SUD-CHEMIE INC.Inventor: SUD-CHEMIE INC.
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Publication number: 20130104736Abstract: A filtration module is provided that includes a filter member and a spacing member disposed in detached, contact engagement along a length of each member, such length extending about a longitudinal axis of a filtration module to define a concentric and detached plurality of filtration layers, and an interleaved, concentric and detached plurality of spacing layers, respectively. One or both of the plurality of spacing layers and plurality of filtration layers may provide a radially-inward directed force. The spacing member may be elastically deformed in the filtration module to apply a radially-inward directed force and a radially-outward directed force, wherein the filtration and spacing layers are retained in substantial fixed spatial relation. A retaining member may be located to engage an external side surface of the filtration module. A filtration module may be constructed by winding the filter member and spacing member about a longitudinal axis of the module.Type: ApplicationFiled: October 25, 2012Publication date: May 2, 2013Applicant: W.L. Gore & Associates, Inc.Inventor: W.L. Gore & Associates, Inc.
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Patent number: 8425661Abstract: Disclosed is an Hg capture system adapted for advantageous placement within a container housing a fluorescent lamp. Such Hg capture system includes a substrate impregnated with between about 0.08 and 0.23 g/cm2 carbon carrying between about 5% and 15% sulfur, basis carbon weight, reacted with between about 0.02 to about 1% by weight iodine, basis sulfur weight. The corresponding method for scouring released vaporous Hg housed within a container includes providing a source of carbon carrying between about 5% and 15% sulfur, basis carbon weight, reacted with between about 0.02 to about 1% by weight iodine, basis sulfur weight; and placing within the container a substrate bearing an effective amount of the iodine reacted sulfur for scouring Hg released within the container.Type: GrantFiled: August 23, 2012Date of Patent: April 23, 2013Assignee: VaporLok Technology, LLCInventors: J. Louis Kovach, Clinton B. Summers
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Patent number: 8409330Abstract: A flue gas adsorbent and method for making an adsorbent for mercury capture are disclosed. The adsorbent comprises an admixture of an adsorptive material and an additive that have been physically combined thereby eliminating the need for traditional impregnation. A method for removing mercury from a flue gas stream is also disclosed.Type: GrantFiled: October 3, 2011Date of Patent: April 2, 2013Assignee: Calgon Carbon CorporationInventor: Nicholas R. Pollack
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Patent number: 8409329Abstract: A method for the purification of a feed gas stream containing CO2 and water and at least one impurity chosen from NOx and SOx, comprising the incorporation of a purification step for the preferential elimination of water is provided.Type: GrantFiled: July 8, 2008Date of Patent: April 2, 2013Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Bruno Alban, Christophe Claeys, Philippe Court, Arthur Darde, Guillaume De Smedt, Bao Ha, Vladimir Hasanov, Simon Jallais, Christian Monereau, Serge Moreau, Elise Renou, Ivan Sanchez-Molinero, Jean-Pierre Tranier
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Patent number: 8404026Abstract: Flow-through substrates, such as honeycombs, comprising certain zeolites. The flow-through substrates may be used, for example, in the removal of a heavy metal from a fluid such as a gas stream.Type: GrantFiled: July 21, 2010Date of Patent: March 26, 2013Assignee: Corning IncorporatedInventors: Dana Craig Bookbinder, Steven Bolaji Ogunwumi, David Lambie Tennent, Ralph Edward Truitt
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Publication number: 20130053234Abstract: A method for preparing a sorbent composition includes the steps of: (i) applying, from a solution or a slurry, a layer of a copper compound on the surface of a support material, and (ii) drying the coated support material, wherein the thickness of the copper compound layer on the dried support is in the range 1-200 ?m. The precursor may be converted to a sorbent suitable for removing heavy metals from liquids or gases by applying one or more sulphur compounds to sulphide the copper compound and form CuS.Type: ApplicationFiled: August 10, 2010Publication date: February 28, 2013Applicant: JOHNSON MATTHEY PLCInventors: Andrew Fish, Lucy Jane Challis, Matthew John Cousins, Mark Robert Feaviour, Alison Mary Wagland, Stephen David Pollington, Edmund Hugh Stitt
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Publication number: 20130047850Abstract: Effective synthesis gas purification is achieved by applying copper adsorbents which are resistant to the reduction by the components of the synthesis gas H2 and CO at normal operation conditions. The novel adsorbents are produced by admixing small amounts of an inorganic halide, such as NaCl, to the basic copper carbonate precursor followed by calcination at a temperature sufficient to decompose the carbonate. The introduction of the halide can be also achieved during the forming stage of adsorbent preparation. These reduction resistant copper oxides can be in the form of composites with alumina and are especially useful for purification of synthesis gas or gas streams containing hydrogen carbon monoxide or other reducing agents.Type: ApplicationFiled: August 25, 2011Publication date: February 28, 2013
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Patent number: 8382881Abstract: The invention provides a method for removing mercury from a liquid or gas hydrocarbon stream, mixtures thereof, including mixtures of liquid streams with a solid carbonaceous substance, by contacting the hydrocarbon stream with a composition comprising silver and a support material, wherein the composition as measured by ammonia chemisorption has a surface acidity in the range of 0.1-10.0 ?mole of irreversible NH3/g of the composition.Type: GrantFiled: November 19, 2007Date of Patent: February 26, 2013Inventors: Madan M. Bhasin, Mark K. Brayden, Foppe Dupius, Peter E. Groenendijk, Seyed R. Seyedmonir, Michael C. Smith, Fredrick W. Vance
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Patent number: 8366807Abstract: 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.Type: GrantFiled: June 6, 2007Date of Patent: February 5, 2013Assignee: Johnson Matthey Public Limited CompanyInventors: Hugh Gavin Charles Hamilton, Stephen Poulston
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Patent number: 8328909Abstract: 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.Type: GrantFiled: May 27, 2010Date of Patent: December 11, 2012Assignee: Praxair Technology, Inc.Inventors: Chien-Chung Chao, David R. Thompson, Jurron Bradley, Steve J. Pontonio
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Patent number: 8328908Abstract: 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.Type: GrantFiled: January 29, 2008Date of Patent: December 11, 2012Assignee: University of NottinghamInventors: Colin Edward Snape, Cheng-gong Sun, Janos Lakatos, Ron Earl Perry
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Publication number: 20120266751Abstract: 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.Type: ApplicationFiled: April 27, 2012Publication date: October 25, 2012Inventor: Joseph J. P. Biermann
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Publication number: 20120266752Abstract: 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.Type: ApplicationFiled: April 27, 2012Publication date: October 25, 2012Inventor: Joseph J. P. Biermann
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Patent number: 8293196Abstract: The present invention is directed to an additive, primarily for combustion of low sulfur and high alkali coals, that includes a transition metal to impact positively bottom ash slag and optionally a halogen to effect mercury oxidation and collection in the flue gas.Type: GrantFiled: August 4, 2011Date of Patent: October 23, 2012Assignee: ADA-ES, Inc.Inventors: Kenneth E. Baldrey, Sharon Sjostrom, Nina Bergan French, Michael D. Durham
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Publication number: 20120263634Abstract: 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 (SiO2)x(OH)yMzSaF, wherein (i) SiO2 is an optional component; (ii) M comprises at least one of the following : boron, magnesium, aluminum, calcium, titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, palladium, silver, cadmium, tin, platinum, gold, and bismuth; (iii) S comprises a sulfur-based species selected from at least one of the following: sulfide salts, dithiocarbamates, polymer-based dithiocarbamates, and polysulfide salts; (iii) F is an optional component and comprises at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane.Type: ApplicationFiled: October 7, 2011Publication date: October 18, 2012Inventors: Nicholas S. Ergang, Bruce A. Keiser, Richard Mimna
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Patent number: 8277542Abstract: 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.Type: GrantFiled: July 22, 2009Date of Patent: October 2, 2012Inventors: Srivats Srinivasachar, Steven A. Benson
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Patent number: 8273154Abstract: 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 MgAl2 Si2O8, preferably containing minor amounts of Iron, Platinum and Titanium.Type: GrantFiled: May 21, 2010Date of Patent: September 25, 2012Inventor: Johanshir Golchin
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Patent number: 8231711Abstract: Toxic substances such as heavy metals are extracted from a medium using a sorbent composition. The sorbent composition is derived by sulfidation of red mud, which contains hydrated ferric oxides derived from the Bayer processing of bauxite ores. Exemplary sulfidizing compounds are H2S, Na2S, K2S, (NH4)2S, and CaSx. The sulfur content typically is from about 0.2 to about 10% above the residual sulfur in the red mud. Sulfidized red mud is an improved sorbent compared to red mud for most of the heavy metals tested (Hg, Cr, Pb, Cu, Zn, Cd, Se, Th, and U). Unlike red mud, sulfidized red mud does not leach naturally contained metals. Sulfidized red mud also prevents leaching of metals when mixed with red mud. Mixtures of sulfidized red mud and red mud are more effective for sorbing other ions, such as As, Co, Mn, and Sr, than sulfidized red mud alone.Type: GrantFiled: August 30, 2011Date of Patent: July 31, 2012Assignee: J. I. Enterprises, Inc.Inventor: Joseph Iannicelli
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Publication number: 20120184039Abstract: A method for facilitating removal of mercury from a primary fluid stream of interest which is contaminated with organically-bound, elemental, and ionic mercury species. The stream is analyzed to establish the relative content of the organically-bound, elemental, and ionic mercury species present therein by forming a diverted side stream from the primary stream, and passing the side stream successively through three in series filter stages, the first captures organically bound mercury, the second captures elemental mercury, and the third captures ionic mercury. The side stream flow through the filter stages is continued for a predetermined period, and upon conclusion of the period the quantity of mercury collected at each of the filtration stages is determined. This data is then utilized to determine the capacity of the three different filtration stages required to reduce the mercury content in the mam stream to a desired level.Type: ApplicationFiled: August 27, 2010Publication date: July 19, 2012Applicant: MYCELX TECHNOLOGIES CORPORATIONInventor: Hal Alper
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Patent number: 8221711Abstract: Compositions and methods for removing mercury and/or cadmium from samples containing mercury and/or cadmium or thought to contain mercury and/or cadmium are described. Selenium core-sheath compositions containing a selenium nanostructure core and a melt-resistant sheath can be used to remove mercury and/or cadmium from high-temperature environments.Type: GrantFiled: September 13, 2011Date of Patent: July 17, 2012Assignee: Empire Technology Development LLCInventor: Kwangyeol Lee
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Publication number: 20120167762Abstract: 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.Type: ApplicationFiled: July 13, 2010Publication date: July 5, 2012Inventors: Alain Brasseur, Jean-Paul Pirard, Alain Laudet
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Publication number: 20120167763Abstract: The present invention relates to a method for purifying a gas stream including CO2, elemental mercury (Hg0) and nitrogen oxides (NOx).Type: ApplicationFiled: August 30, 2010Publication date: July 5, 2012Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Alain Briglia, Christian Monereau
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Patent number: 8198208Abstract: A bromination process includes contacting fly ash with liquid bromine to increase the mercury adsorbing ability of the fly ash. The resultant brominated fly ash can be used to adsorb mercury in a high temperature combustion gas.Type: GrantFiled: September 29, 2009Date of Patent: June 12, 2012Assignee: EPCOR Power Generation Services, Inc.Inventors: Rajender P. Gupta, Zhenghe Xu, Ian Clark, Hongqun Yang
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Patent number: 8197695Abstract: An absorbent composition suitable for removing mercury, arsenic or antimony from fluid streams includes 5-50% by weight of a particulate sulphided copper compound, 30-90% by weight of a particulate support material, and the remainder one or more binders, wherein the metal sulphide content of the absorbent, other than copper sulphide, is below 5% by weight.Type: GrantFiled: January 29, 2009Date of Patent: June 12, 2012Assignee: Johnson Matthey PLCInventors: Matthew John Cousins, Robert Logan, Christopher John Young
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Patent number: 8192528Abstract: A method and apparatus for separating mercury and other undesired constituents from a natural gas stream includes passing the raw gas stream sequentially through a first separator, an amine treatment unit, a cooler, a second separator, a dehydrator, a cooler and a third separator. The first separator receives the natural gas stream and separates hydrocarbon and water condensates from the stream; the amine treatment unit removes acid gases; the cooler reduces the temperature of the gas stream to condense additional hydrocarbons and water that are removed by the second separator; and the dehydrator removes water vapor. Next, the temperature of the stream is reduced by the second cooler to condense the mercury and any remaining hydrocarbon vapors.Type: GrantFiled: November 14, 2008Date of Patent: June 5, 2012Assignee: Saudi Arabian Oil CompanyInventor: Faisal M. Al-Faqeer
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Publication number: 20120132073Abstract: 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.Type: ApplicationFiled: December 17, 2010Publication date: May 31, 2012Inventors: Benedict Yorke Johnson, Samuel Odei Owusu, Millicent Kaye Weldon Ruffin
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Publication number: 20120134903Abstract: The invention relates to a solid inorganic composition for reducing dioxins and furans, as well as heavy metals, in particular mercury, present in flue gases, to a method for preparing such a composition, and to the use thereof for reducing dioxins and furans as well as heavy metals, in particular mercury, present in flue gases, by contacting said flue gases with said solid inorganic composition.Type: ApplicationFiled: July 13, 2010Publication date: May 31, 2012Inventors: Alain Brasseur, Jean-Paul Pirard, Alain Laudet
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Patent number: 8187364Abstract: A method and apparatus for simultaneously removing alkali chlorides from an industrial process and purifying vaporizable contaminants such as mercury from a particulate material. Gases containing alkali chlorides are cooled to a temperature above the boiling point of the contaminants and below the boiling point of the alkali chlorides. Particulates rich in alkali chlorides are removed from the gas stream with a first dust collector. The gas stream cleaned of alkali chlorides is directed to a reaction area where particulate material containing mercury contaminants is inserted into the gas stream to vaporize the contaminants from the material and entrain the cleaned material in the gases. The gases are directed to a second dust collector to remove the entrained particulate material, 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 and thereafter separated from the gases.Type: GrantFiled: August 18, 2009Date of Patent: May 29, 2012Assignee: FLSmidth A/SInventors: Ove Lars Jepsen, Peter T. Paone, III, John S. Salmento