Transition Metal Or Compound Thereof Catalyst Patents (Class 423/244.1)
  • Patent number: 11465120
    Abstract: A nitrogen oxide storage material comprising: Mg1-yAl2O4-y, wherein y is a number satisfying 0?y?0.2, a noble metal, an oxide of a metal other than the noble metal, and a barium compound, the noble metal, the oxide, and the barium compound being loaded on Mg1-yAl2O4-y. The metal oxide comprises at least one metal oxide selected from zirconium oxide, praseodymium oxide, niobium oxide, and iron oxide.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: October 11, 2022
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Masaaki Inamura, Masaaki Haneda, Yuma Kako
  • Patent number: 9034527
    Abstract: One embodiment of the present invention is a unique fuel cell system. Another embodiment is a unique desulfurization system. Yet another embodiment is a method of operating a fuel cell system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for fuel cell systems and desulfurization systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: May 19, 2015
    Assignee: LG Fuel Cell Systems Inc.
    Inventor: John R. Budge
  • Patent number: 8951491
    Abstract: The preparation of nano-oxide coated adsorbent, which is useful for treatment of toxic gases, by coating of composite materials containing hydrotalcite over ceramic monolithic substrates. Oxides and salts of metals are reacted in a known manner to prepare hydrotalcites or mixed metal layered hydroxides such as Mg—Al, Ca—Al, Zn—Al, Zn—Cr type possessing positive layer charge, from which a stable gel is prepared by adding swellable clay, e.g., montmorillonite etc. in different hydrotalcite:clay ratio in an aqueous medium and homogenizing the same with high speed homogenizer and ultrasonicator in a high intensity ultrasonic processor. The gel is dip-coated over cordierite/mulite honey-comb monolithic supports. The dip-coated monoliths are dried and calcined to develop the alumino-silicate supported nano-oxide coats over honey-comb ceramic substrates for carrying out adsorption of H2S and SO2 gas in a He flow in various flow rates at 400 to 1000° C. temperature in a cylindrical quartz tube.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: February 10, 2015
    Assignee: Council of Scientific & Industrial Research
    Inventors: Mridusmita Mishra, Rajib Lochan Goswamee
  • Patent number: 8951494
    Abstract: A process for the conversion of sulphur dioxide contained in a feed gas to sulphur trioxide, comprising the steps of a) alternatingly providing a first feed gas containing a high concentration of sulphur dioxide and a second feed gas containing a low concentration of sulphur dioxide as a process gas, b) preheating the process gas by heat exchange with a heat exchange medium, c) reacting the process gas in the presence of a catalytically active material in a catalytic reaction zone, d) converting at least in part the sulphur dioxide of the process gas into sulphur trioxide contained in a product gas in the catalytic reaction zone, e) cooling the product gas by contact with a heat exchange medium, wherein a thermal buffer zone is provided in relation to one of said process steps, providing thermal energy produced during super-autothermal operation for heating the process gas during sub-autothermal operation.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: February 10, 2015
    Assignee: Haldor Topsoe A/S
    Inventors: Martin Møllerhøj, Mads Lykke, Morten Thellefsen, Peter Schoubye
  • Patent number: 8945424
    Abstract: A catalyst comprising of NiO; Al2O3; and ZnO. The catalyst is capable of greater than 5% sulfur removal from a synthesis gas at a temperature range from 300° C. to 600° C.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: February 3, 2015
    Assignee: Lummus Technology Inc.
    Inventors: Sourabh S. Pansare, Joe D. Allison, Steven E. Lusk, Albert C. Tsang
  • Patent number: 8940660
    Abstract: The present invention involves both separated beds (or physical mixture) and a process for treating a fuel gas comprising sending the fuel gas to a separated bed (or physical mixture), in which the separated beds comprise a first bed of a sulfur sorbent and a second bed of a water gas shift catalyst (a physical mixture of a sulfur sorbent and a water gas shift catalyst). The process comprises first sending the fuel gas to the first bed to remove sulfur compounds from said fuel gas and then the fuel gas goes to the second bed to undergo a water gas shift reaction in which carbon monoxide is converted to carbon dioxide and water is converted to hydrogen. (or sending the fuel gas simultaneously to the physical mixture to remove simultaneously the sulfur compounds and to react CO with water to CO2 and hydrogen).
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: January 27, 2015
    Assignee: UOP LLC
    Inventors: Manuela Serban, Kurt M. Vanden Bussche, Alakananda Bhattacharyya
  • Patent number: 8900544
    Abstract: A method for removing sulphur from a fluid by the steps of providing a first fluid comprising a sulphur-containing compound; adsorbing the sulphur of sulphur-containing compound onto an adsorbent; regenerating the adsorbent by oxidation of the adsorbed sulphur to sulphur dioxide thereby yielding an off-gas stream comprising sulphur dioxide; providing a second fluid comprising hydrogen sulphide, using the second fluid and the off-gas stream as reactants in a Claus process for producing elemental sulphur, wherein a part of hydrogen sulphide provided by the second fluid is oxidized to sulphur dioxide and water at reaction temperature, the residual hydrogen sulphide, the resulting sulphur oxide and the sulphur oxide provided by the off-gas stream are converted to elemental sulphur, the oxygen required for the oxidation of the hydrogen sulphide provided by the second fluid is provided by an air stream, and the off-gas stream dilutes the second fluid in the Claus process.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: December 2, 2014
    Assignee: Linde Aktiengesellschaft
    Inventor: Bernhard Schreiner
  • Patent number: 8703084
    Abstract: A method and apparatus for eliminating COS and/or CS2 from a hydrocarbon-containing feed stream, and further eliminating H2S from such feed stream or converting all sulfur species in such feed stream to H2S and SO2 to allow for easy subsequent conversion of such H2S and SO2 to elemental sulfur in a Claus reaction. The method comprises: (i) injecting water so that the feed stream contains greater than 10 vol % (water equivalent); (ii) passing the feed stream through catalyst means which hydrogenates COS and/or CS2 to H2S; (iii) injecting O2 so that the stoichiometric ratio of O2 to H2S is at least 0.5:1.0; (iv) passing the stream though a reaction zone having oxidation catalyst means which oxidizes H2S to elemental sulfur or SO2 (depending on the amount of oxygen and water added); where the temperature of the reaction zone is above the elemental sulfur dew point.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: April 22, 2014
    Assignee: Archon Technologies Ltd.
    Inventors: Conrad Ayasse, Ahmed M. Shahin, Alan Ayasse
  • Patent number: 8668894
    Abstract: The present invention relates to a method for processing a sulfur-containing gas and a hydrogenation catalyst used therefor. The method comprises introducing the sulfur-containing gas into the tail gas hydrogenation unit of a sulfur recovery device, processing it with the hydrogenation catalyst of the present invention, and absorbing the hydrogenated tail gas with a solvent. The hydrogenation catalyst comprises from 0.5 to 3 wt. % of an active component nickel oxide, from 1 to 4 wt. % of an active component cobalt oxide, from 8 to 20 wt. % of an active component molybdenum oxide or tungsten oxide, from 1 to 5 wt. % of a deoxidation auxiliary agent, from 10 to 40 wt. % of TiO2, the balance being ?-Al2O3, based on the weight of the catalyst.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: March 11, 2014
    Assignees: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, Sinopec
    Inventors: Aihua Liu, Yiling Zhang, Xingzhong Xu, Jianli Liu, Weidong Tao, Jinshan Xu
  • Patent number: 8609051
    Abstract: Disclosed is a composition useful in the hydrolysis of sulfur compounds that are contained in a gas stream. The composition comprises alumina, a group VI metal component and a group VIII metal component. The composition has a pore structure such that a large percentage of its total pore volume is contained within the pores having a pore diameter greater than 10,000 angstroms.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: December 17, 2013
    Assignee: Shell Oil Company
    Inventor: Stephen Neil Massie
  • Patent number: 8568679
    Abstract: Disclosed is a process for the removal of sulfur from a fuel gas stream that additionally contains carbon dioxide and a light olefin as well as an organic sulfur compound. The process includes hydrotreating the fuel gas stream followed by a catalytic reduction of the resulting hydrotreated fuel gas to remove the carbonyl sulfide contained therein that is yielded in the hydrotreating step as a result of the equilibrium reaction of hydrogen disulfide with carbon dioxide to yield carbonyl sulfide and water.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: October 29, 2013
    Assignee: Shell Oil Company
    Inventor: Gary Lee Ripperger
  • Patent number: 8470273
    Abstract: A combustion exhaust gas processing device comprises: a dust collector collecting dust in a cement kiln combustion exhaust gas: a wet dust collector as a catalyst-poisoning-substance stripper removing a catalyst-poisoning substance from a combustion exhaust gas which passed the wet dust collector; and a catalyst device from which NOx, a persistent organic pollutant, etc. in the preheated combustion exhaust gas, are removed. A titanium-vanadium catalyst etc. as an oxide catalyst is used upstream of the catalyst device, and a platinum catalyst etc. as a noble-metal catalyst downstream of the catalyst device. The temperature of the combustion exhaust gas after the catalyst-poisoning substance is removed is increased up to 140° C. or more with the preheaters to prevent decline in denitration efficiency of and the decomposition efficiency of a volatile organic compound.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: June 25, 2013
    Assignees: Taiheiyo Cement Corporation, Nippon Shokubai Co., Ltd.
    Inventors: Shinichiro Saito, Yasuhiro Uchiyama, Junichi Terasaki, Hisashi Kondo, Mitsuharu Hagi, Shinyuki Masaki
  • Publication number: 20130009101
    Abstract: The method deacidifies a gas including H2S and CO2. The gas is subjected to an absorption to collect the CO2 and the H2S in an absorber, then to conversion through hydrolysis of the COS to H2S and CO2 in a reactor, and to a second absorption to collect the H2S and the CO2 formed in the reactor. The absorbent solution is regenerated in regenerator.
    Type: Application
    Filed: September 15, 2010
    Publication date: January 10, 2013
    Inventor: Jérémy Gazarian
  • Patent number: 8236262
    Abstract: A particulate desulfurization material includes one or more nickel compounds, a zinc oxide support material, and one or more alkali metal compounds wherein the nickel content of the material is in the range 0.3 to 10% by weight and the alkali metal content of the material is in the range 0.2 to 10% by weight. A method of making the desulfurization material includes the steps: (i) contacting a nickel compound with a particulate zinc support material and an alkali metal compound to form an alkali-doped composition, (ii) shaping the alkali-doped composition, and (iii) drying, calcining, and optionally reducing the resulting material. The desulfurization material may be used to desulfurize hydrocarbon gas streams with reduced levels of hydrocarbon hydrogenolysis.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: August 7, 2012
    Assignee: Johnson Matthey PLC
    Inventors: Gavin Potter, Gordon Edward Wilson, Norman Macleod, Antonio Chica Lara, Avelino Corma Canos, Yonhy Saavedra Lopez
  • Patent number: 8226917
    Abstract: A reaction-based process has been developed for the selective removal of carbon dioxide (CO2) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration in the stream. The proposed process effects the separation of CO2 from a mixture of gases (such as flue gas/fuel gas) by its reaction with metal oxides (such as calcium oxide). The Calcium based Reaction Separation for CO2 (CaRS—CO2) process consists of contacting a CO2 laden gas with calcium oxide (CaO) in a reactor such that CaO captures the CO2 by the formation of calcium carbonate (CaCOa). Once “spent”, CaCO3 is regenerated by its calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO2. The “regenerated” CaO is then recycled for the further capture of more CO2. This carbonation-calcination cycle forms the basis of the CaRS—CO2 process.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: July 24, 2012
    Assignee: The Ohio State University
    Inventors: Liang-Shih Fan, Himanshu Gupta, Mahesh V. Iyer
  • Patent number: 8211395
    Abstract: A procedure for obtaining mixed multimetallic oxides derived from hydrotalcite type compounds, characterized in that the laminar metallic hydroxides obtained are constituted by three or four metallic cations, forming part of the sheets of the hydrotalcite type material represented by the formula: [M(II)1?x?y?zM(II)?xM(III)yM(III)?z(OH)2](An?y+z/n).mH2O. by a process comprising: (1) preparing an aqueous or organic solution containing three or more cations; (2) preparing an alkaline solution; (3) slowly combining solutions (1) and (2) to cause the co-precipitation of the cations in the form of hydroxides; (4) washing the precipitate containing the hydrotalcites with water, until removal of the non-precipitated ions; (5) drying; and (6) calcining the hydrotalcites.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: July 3, 2012
    Assignee: Instituto Mexicano Del Petroleo
    Inventors: Jaime Sanchez Valente, Esteban Lopez Salinas, Manuel Sanchez Cantu, Francisco Hernandez Beltran
  • Publication number: 20120148468
    Abstract: Disclosed is a composition useful in the hydrolysis of sulfur compounds that are contained in a gas stream. The composition comprises alumina, a group VI metal component and a group VIII metal component. The composition has a pore structure such that a large percentage of its total pore volume is contained within the pores having a pore diameter greater than 10,000 angstroms.
    Type: Application
    Filed: February 16, 2012
    Publication date: June 14, 2012
    Applicant: SHELL OIL COMPANY
    Inventor: Stephen Neil MASSIE
  • Patent number: 8083933
    Abstract: A process for removing organic sulfur from a fuel gas stream that further contains light olefins by catalytic hydrodesulfurization to yield a treated fuel gas having an very low concentration of organic sulfur. The effluent of the catalytic hydrodesulfurization reactor may be cooled with a portion thereof being recycled and introduced along with the fuel gas stream that is charged to the hydrodesulfurization reactor. The remaining, unrecycled portion of the effluent may further be treated to remove the hydrogen sulfide that is yielded from by the hydrodesulfurization of the fuel gas stream.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: December 27, 2011
    Assignee: Shell Oil Company
    Inventor: Gary Lee Ripperger
  • Patent number: 8017545
    Abstract: The present invention relates to a method of making a chemical compound comprising nickel, aluminum, oxygen and sulfur having a general formula Ni2xAl2O2x+3?zSz, wherein 0.5?x?3 and 0?z?2x. The material is effective for the removal of S-compounds from gaseous streams, effective for catalyzing a water gas shift reaction and suppresses the formation of carbon monoxide and hydrogen under conditions where a water gas shift reaction is catalyzed.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: September 13, 2011
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Manuela Serban, Kurt M. Vanden Bussche, Lisa M. King
  • Patent number: 7951346
    Abstract: Methods and systems for reducing emissions of particulate matter from a gaseous stream are provided. The subject systems include a catalyst that reduces the amount of particulate matter emissions in the gaseous stream. Embodiments of the subject systems may also reduce the amount of particulate matter precursor emissions in the gaseous stream. In some cases, the subject systems and methods include a sorber that facilitates the reduction in particulate matter and particulate matter precursors in the gaseous stream. The subject methods and systems find use in a variety of applications where it is desired to reduce particulate matter emissions from a gaseous stream.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: May 31, 2011
    Assignee: Emerachem, LLC
    Inventors: Tom Girdlestone, Steven De Cicco, William S. Epling, Jerald A. Cole, Gregory J. Wagner
  • Patent number: 7910077
    Abstract: Sulfur oxides are removed from an oxygen-containing acid gas in configurations and methods in which oxygen is removed from the acid gas using reducing gases at relatively high temperature. The so treated acid gas is then fed to a direct reduction reactor in which the sulfur species are converted to elemental sulfur. Contemplated configurations are particularly effective and economically attractive as they are generally not limited by reaction equilibrium as present in a Claus reaction and do not require solvent and solvent-associated equipment.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: March 22, 2011
    Assignee: Fluor Technologies Corporation
    Inventors: Thomas King Chow, Vincent Wai Wong, John Gebur
  • Patent number: 7837964
    Abstract: The present invention relates to processes for removing sulfur compounds from hydrocarbonaceous gases by using catalysts, with the exception of activated carbons and zeolites, which comprise copper, silver, zinc, molybdenum, iron, cobalt, nickel or mixtures thereof at temperatures of from (?50) to 150° C. and a pressure of from 0.1 to 10 bar.
    Type: Grant
    Filed: December 13, 2003
    Date of Patent: November 23, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Helge Wessel, Markus Hoelzle, Bernd Vogel, Roland Hageboeke, Michael Hesse, Norbert Wilden
  • Patent number: 7824638
    Abstract: This disclosure relates generally to processes for efficient incineration and conversion of the tail gas streams from sulfur recovery units containing sulfur compounds such as H2S, CO2, COS, CS2, and other sulfur species and sulfur vapors from S1 to S8 to SO2. The present disclosure describes the use of a combination of catalysts to achieve efficient oxidation of all reduced sulfur compounds as well as oxidation of CO and H2 to meet the industry emission requirements. The catalytic tail gas incineration process described herein can advantageously operate at lower temperatures, which in turn can represent a savings in reduced fuel gas costs.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: November 2, 2010
    Assignee: Worleyparsons Group, Inc.
    Inventors: Mahin Rameshni, Stephen Santo
  • Publication number: 20100266470
    Abstract: 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.
    Type: Application
    Filed: December 17, 2008
    Publication date: October 21, 2010
    Inventors: Renato Ancora, Massimo Borsa, Luigi Cassar
  • Patent number: 7816300
    Abstract: The present invention provides an exhaust gas purification catalyst comprising a base material, and a two or more layered catalyst coating layer, formed on the base material, wherein the two or more layers have upper and lower layers, and wherein the upper layer contains a large amount of noble metal per liter of the base material more than that of the lower layer, and the lower layer contains a large amount of an oxygen storage/release material per liter of the base material more than that of the upper layer. This exhaust gas purification catalyst has more excellent H2S purifying performance than conventional catalysts while maintaining purifying performance against NOx and the other exhaust gas components.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: October 19, 2010
    Assignees: Cataler Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Michihiko Takeuchi, Hirotaka Ori, Takeru Yoshida, Kazunobu Ishibashi, Ichiro Hachisuka
  • Patent number: 7811474
    Abstract: The present invention involves a process and materials for simultaneous desulfurization and water gas shift of a gaseous stream comprising contacting the gas stream with a nickel aluminate catalyst. The nickel aluminate catalyst is preferably selected from the group consisting of Ni2xAl2O2x+3, Ni(2?y)Ni0yAl2O(5?y), Ni(4?y)Ni0yAl2O(7?y), Ni(6?y)Ni0yAl2O(9?y), and intermediates thereof, wherein x?0.5 and 0.01?y?2. Preferably, x is between 1 and 3. More preferably, the nickel containing compound further comprises Ni2xAl2O2x+3?zSz wherein 0?z?2x.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: October 12, 2010
    Assignee: UOP LLC
    Inventors: Manuela Serban, Lisa M. King, Alakananda Bhattacharyya, Kurt M. Vanden Bussche
  • Patent number: 7704476
    Abstract: The present invention relates to a process and a plant for producing sulfuric acid, in which a starting gas containing sulfur dioxide at least partly reacts with molecular oxygen in at least one contact with at least one contact stage to form sulfur trioxide, and in which the sulfur-trioxide-containing gas produced is introduced into an absorber and converted there to sulfuric acid. To achieve that only small gas volumes must be supplied to the first contact stage, based on the amount of sulfur dioxide used, with at least the same capacity of the plant and by using conventional catalysts, it is proposed in accordance with the invention to supply to the first contact stage a contact gas with a sulfur dioxide content of more than 16 vol-% and with a volumetric ratio of sulfur dioxide to oxygen of more than 2.67:1.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: April 27, 2010
    Assignee: Outotec OYJ
    Inventors: Karl-Heinz Daum, Hannes Storch, Jan Rieder
  • Patent number: 7682423
    Abstract: Zinc oxide-based sorbents, and processes for preparing and using them are provided. The sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents comprise an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAl2O4) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, comprising a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: March 23, 2010
    Assignee: Research Triangle Institute
    Inventors: Santosh Kumar Gangwal, Brian Scott Turk, Raghubir Prasael Gupta
  • Patent number: 7611685
    Abstract: The inventive method for hydrogen sulphide and/or mercaptans decomposition consists in passing hydrogen sulphide and/or mercaptan-containing gas at a temperature less than 200° C. through a hard material layer (catalyst) which decomposes said hydrogen sulphide or mercaptans in such a way that hydrogen or hydrocarbons are released and sulphur-containing compounds are formed on a material surface. Said hard material is placed in a liquid medium layer. Said invention makes it possible to use a hard material (catalyst) without a periodical regeneration thereof.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: November 3, 2009
    Assignee: Institu Kataliza Imeni G. K. Boreskova Sibirskogo Otdeleniya Rossiiskoi Akademii Nauk
    Inventors: Anatolii Nikolaevich Startsev, Anastasia Viktorovna Pashigreva, Olga Valeryevna Voroshina, Ivan Ivanovich Zakharov, Valentin Nikolaevich Parmon
  • Publication number: 20090269266
    Abstract: Oxidic composition consisting essentially of oxidic forms of a first metal, a second metal, and optionally a third metal, the first metal being either Ca or Ba and being present in the composition in an amount of from about 5 to about 80 wt %, the second metal being Al and being present in the composition in an amount of from about 5 to about 80 wt %, the third metal being selected from the group consisting of La, Ti, and Zr, and being present in an amount of from 0 to about 17 wt %—all weight percentages calculated as oxides and based on the weight of the oxidic composition, the oxidic composition being obtainable by (a) preparing a physical mixture comprising solid compounds of the first, the second, and the optional third metal, (b) optionally aging the physical mixture, without anionic clay being formed, and (c) calcining the mixture. This composition is suitable for use in FCC processes for the passivation of metals with only minimal influence on the zeolite's hydrothermal stability.
    Type: Application
    Filed: June 2, 2006
    Publication date: October 29, 2009
    Applicant: ALBEMARLE NETHERLANDS B.V.
    Inventors: Dennis Stamires, Paul O'connor, William Jones, Erik Jeroen Laheij
  • Patent number: 7563424
    Abstract: The present invention relates to a compressed metal oxide composition particle comprised of metal oxide and an organic binder, with the binder preferably being a water insoluble cellulose composition. The present invention also relates to a method for forming a compressed metal oxide composition particle, with the preferred method including compressing a metal oxide and binder mixture to form compressed metal oxide composition particles having a final particle size of between about 0.1 mm and about 200 mm.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: July 21, 2009
    Assignee: M-I, LLC
    Inventors: Delbert C. Scranton, Jr., Thomas G. Braga, Alan D. Johnson, Alvin Samuels
  • Patent number: 7521033
    Abstract: The present invention is directed to an improved apparatus and method of minimizing catalyst poisoning from exhaust gas streams containing inorganic deposits and particulate matter. More specifically, the present invention is directed to an upstream metallic foam trap and a downstream monolithic precious metal catalyst, wherein the trap physically blocks inorganic deposits and particulate matter from poisoning the downstream catalyst. The present invention is also directed to a metallic foam trap containing a coat comprising a first metallic thermal arc sprayed layer and optionally a second refractory metal oxide.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: April 21, 2009
    Assignee: BASF Catalysts LLC
    Inventors: Michael Patrick Galligan, Joseph Charles Dettling
  • Publication number: 20090060807
    Abstract: Disclosed is a process for removing sulfur from a fuel gas stream that comprises an organic sulfur compound and a light olefin. The process includes introducing a fuel gas stream into an elongated hydrotreating reactor vessel in which it is contacted with a hydrodesulfurization catalyst under hydrodesulfurization process conditions. A quench gas stream is also introduced into the elongated hydrotreating reactor vessel at a location below the point of introduction of the fuel gas stream. A reactor effluent is yielded that contains hydrogen sulfide and a significantly reduced organic sulfur concentration that is below the organic sulfur concentration of the fuel gas stream.
    Type: Application
    Filed: May 23, 2008
    Publication date: March 5, 2009
    Inventor: Gary Lee Ripperger
  • Patent number: 7498008
    Abstract: A process for the removal of a pollutant from a gas is provided that includes contacting a gas comprising a pollutant with a cataloreactant wherein the cataloreactant reacts with the pollutant and wherein an oxidation state of the cataloreactant is reduced. The cataloreactant may be regenerated with an oxidizing agent.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: March 3, 2009
    Assignee: GRT, Inc.
    Inventors: Jeffrey H. Sherman, Sagar B. Gadewar, Peter K. Stoimenov
  • Patent number: 7481985
    Abstract: The present invention provides for a method and apparatus for purifying carbon dioxide. Sulfur species are efficiently and effectively removed from the carbon dioxide by a series of steps which include heater/heat exchange means, impurity adsorption means and cooling means.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: January 27, 2009
    Assignee: The BOC Group, Inc.
    Inventors: Ravi Jain, YuDong Chen
  • Patent number: 7438876
    Abstract: A selective catalytic reduction apparatus has at least first and last catalyst layers in series for reducing nitrogen oxides in a flue gas, at least one interstage heat exchanger located after the first layer and before the last layer, that lowers flue gas temperature, and that acts as a mixing body to lower the standard deviation of the NH3/NO ratio entering catalyst layers after the first catalyst layer, thus providing better consumption of both ammonia and NOx in the reactor than would be achieved in the absence of the at least one interstage heat exchanger.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: October 21, 2008
    Inventor: J. Edward Cichanowicz
  • Publication number: 20080253949
    Abstract: A process for removing organic sulfur from a fuel gas stream that further contains light olefins by catalytic hydrodesulfurization to yield a treated fuel gas having an very low concentration of organic sulfur. The effluent of the catalytic hydrodesulfurization reactor may be cooled with a portion thereof being recycled and introduced along with the fuel gas stream that is charged to the hydrodesulfurization reactor. The remaining, unrecycled portion of the effluent may further be treated to remove the hydrogen sulfide that is yielded from by the hydrodesulfurization of the fuel gas stream.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 16, 2008
    Inventor: Gary Lee RIPPERGER
  • Patent number: 7427385
    Abstract: Systems and processes for removing a first sulfur compound from a hydrocarbon stream. The systems and process utilize at least one reaction vessel incorporating a hydrolysis catalyst suitable for hydrolyzing the first sulfur compound to a second sulfur compound. The reaction vessel also incorporates a sorbent material suitable for absorbing the second sulfur compound. Following hydrolysis of the first sulfur compound to the second sulfur compound and absorption of the second sulfur compound, a hydrocarbon-containing stream having a reduced sulfur content is produced. The hydrolysis catalyst and sorbent material may be provided in separate zones within the reaction vessel or provided as a mixture in a single zone. The hydrocarbon-containing stream having a reduced sulfur content is suitable for a variety of uses, including as a feedstreams for hydrogen plants, process gas streams for power generation plants, or for other uses for hydrocarbon-containing stream having reduced sulfur content.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: September 23, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Glen E. Scheirer, Francis S. Wu, Thomas R. Kiliany
  • Publication number: 20080210088
    Abstract: Hydrogen-producing fuel processing systems, hydrogen purification membranes, hydrogen purification devices, and fuel processing and fuel cell systems that include hydrogen purification devices. In some embodiments, the fuel processing systems and the hydrogen purification membranes include at least one metal membrane, which is at least substantially comprised of a palladium alloy. In some embodiments, the membrane is formed from an alloy of palladium and gold and which contains trace amounts of carbon, silicon, and/or oxygen. In some embodiments, the membranes form part of a hydrogen purification device that includes an enclosure containing a separation assembly, which is adapted to receive a mixed gas stream containing hydrogen gas and to produce a stream that contains pure or at least substantially pure hydrogen gas therefrom.
    Type: Application
    Filed: October 23, 2007
    Publication date: September 4, 2008
    Applicant: IDATECH, LLC
    Inventor: William A. Pledger
  • Publication number: 20080145290
    Abstract: The present invention relates to a process and a plant for producing sulfuric acid, in which a starting gas containing sulfur dioxide at least partly reacts with molecular oxygen in at least one contact with at least one contact stage to form sulfur trioxide, and in which the sulfur-trioxide-containing gas produced is introduced into an absorber and converted there to sulfuric acid. To achieve that only small gas volumes must be supplied to the first contact stage, based on the amount of sulfur dioxide used, with at least the same capacity of the plant and by using conventional catalysts, it is proposed in accordance with the invention to supply to the first contact stage a contact gas with a sulfur dioxide content of more than 16 vol-% and with a volumetric ratio of sulfur dioxide to oxygen of more than 2.67:1.
    Type: Application
    Filed: April 12, 2005
    Publication date: June 19, 2008
    Inventors: Karl-Heinz Daum, Hannes Storch, Jan Rieder
  • Patent number: 7374737
    Abstract: The invention concerns the use of a composition based on TiO2 as a catalyst for hydrolyzing COS and/or HCN in a gas mixture, said composition comprising at least 1% by weight of at least one sulphate of an alkaline-earth metal selected from calcium, barium, strontium and magnesium.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: May 20, 2008
    Assignee: Axens
    Inventors: Christophe Nedez, Jean-Louis Ray
  • Patent number: 7357905
    Abstract: The invention relates to a process for direct oxidation into sulfur and/or into sulfate of sulfur-containing compounds that are contained in an amount that is less than 10% by volume in a gas, in which said gas is brought into contact with an oxidation catalyst that comprises a substrate and an active phase that comprises iron in a proportion of between 2 and 5% by weight of the oxidation catalyst at a temperature of less than 200° C. and in the presence of oxygen.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: April 15, 2008
    Assignee: Institut Francais du Petrole
    Inventors: Jean-François Chapat, Christophe Nedez, Jean-Louis Ray
  • Patent number: 7354560
    Abstract: Process for the removal of organic and/or inorganic sulfur from an ammonia stream by passing said stream through a fixed bed of sulfur absorbent in a sulfur absorber and withdrawing a sulfur-free ammonia stream, wherein said sulfur absorbent is a catalyst having a total nickel content in reduced form in the range 10 wt % to 70 wt % with the balance being a carrier material selected from the group of alumina, magnesium alumina spinel, silica, titania, magnesia, zirconia and mixtures thereof.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: April 8, 2008
    Assignee: Haldor Topsoe A/S
    Inventors: Poul Erik Højlund Nielsen, Leif Storgaard
  • Patent number: 7323151
    Abstract: A process for the selective removal of sulphur compounds from synthesis gas being rich in carbon monoxide and containing hydrogen, carbon monoxide and containing hydrogen, carbon dioxide and steam comprising contacting the synthesis gas at a maximum contact temperature of 100° C. with an absorbent comprising Cu/ZnO compounds and being prepared by thermal decomposition of a corresponding carbonate and activation of the thermal decomposed carbonate with a reducing gas.
    Type: Grant
    Filed: February 15, 2003
    Date of Patent: January 29, 2008
    Assignee: Haldor Topsoe A/S
    Inventors: Jens-Henrik B. Hansen, Birgitte Hammershoi, Inga D. Sigurdardottir
  • Patent number: 7311891
    Abstract: Recovering sulfur from a gas stream containing hydrogen sulfide by oxidizing the gas stream to convert the hydrogen sulfide in the gas stream to sulfur oxide, and thus form a sulfur oxide enriched gas stream. The sulfur oxide enriched gas stream is contacted with a solid, sulfation resistant adsorbent bed at relatively low temperatures to extract the sulfur oxides and retain them as sulfur compounds, thus forming a sulfur oxide depleted gas stream. The adsorbent bed is then contacted with an inert or reducing gas stream to reduce the retained sulfur compounds to sulfur and/or sulfur dioxide and thereby form an enriched sulfur and/or sulfur dioxide bearing stream. The elemental sulfur is recovered and/or the sulfur dioxide bearing stream may be recycled to the Claus unit for further conversion.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: December 25, 2007
    Assignee: BASF Catalysts LLC
    Inventors: William Bachop Dolan, John Warren Byrne, Michael John Mitariten, Kenneth Butwell, Alfonse Maglio
  • Patent number: 7074375
    Abstract: A hydrocarbon gas such as methane and LPG is desulfurized in the presence of oxygen and an oxidation catalyst to convert sulfur compounds in the gas to sulfur oxides. The sulfur oxides are then trapped downstream of the oxidation by an adsorbent. The amount of oxygen added to the hydrocarbon gas to promote oxidation is such that the sulfur compounds are selectively oxidized and the oxidation of the hydrocarbon gas is minimized to reduce hydrogen formation.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: July 11, 2006
    Assignee: Engelhard Corporation
    Inventors: Jordan K. Lampert, Lawrence Shore, Robert J. Farrauto, Shinn Hwang
  • Patent number: 7060233
    Abstract: A process for removing hydrogen sulfide, other sulfur-containing compounds and/or sulfur and mercury from a gas stream contaminated with mercury, hydrogen sulfide or both. The method comprises the step of selective oxidation of hydrogen sulfide (H2S) in a gas stream containing one or more oxidizable components other than H2S to generate elemental sulfur (S) or a mixture of sulfur and sulfur dioxide (SO2). The sulfur generated in the gas stream reacts with mercury in the gas stream to generate mercuric sulfide and sulfur and mercuric sulfide are removed from the gas stream by co-condensation.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: June 13, 2006
    Assignee: TDA Research, Inc.
    Inventors: Girish Srinivas, Robert J. Copeland
  • Patent number: 6998099
    Abstract: A process is described for the catalytic removal of H2S gas from a sour gas stream in the presence of a chelate ligand of the formula (I) where: X is hydrogen, an alkali metal or NH4+, n is 1, 2 or 3, and at least one of the radicals R1 to R6 is alkyl, aryl, alkyloxy, aryloxy, carboxyl or hydroxyl, the remaining radicals being hydrogen, and the metal in the metal chelate complex is a polyvalent metal, which can occur in more than one oxidation state. A mixture is also described for removing H2S gas from a sour gas stream, the mixture comprising an aminocarboxylate-containing metal chelate complex, and the use is also described of an aminocarboxylate-containing metal chelate complex for removing H2S gas from a sour gas stream.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: February 14, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Hesse, Hans-Ulrich Jäger
  • Patent number: 6998100
    Abstract: Chlorite-like phyllosilicate materials are found useful as SOx sorbents. A novel process of sulfur oxide sorption is provided utilizing these layered materials as contact solids. Typical industrial applications include sulfur removal from fluid catalyst cracking process, cold-side combustion gas sulfur abatement and cleaner coal gasification.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: February 14, 2006
    Assignee: Toll Processing and Consulting, LLC
    Inventors: Edwin W. Albers, Harry W. Burkhead, Jr.
  • Patent number: RE39553
    Abstract: The present invention relates to sulfur tolerant catalyst composites useful for reducing contaminants in exhaust gas streams, especially gaseous streams containing sulfur oxide contaminants. More specifically, the present invention is concerned with improved NOx trap catalysts for use in diesel engines as well as lean burn gasoline engines. The sulfur tolerant NOx trap catalyst composites comprise a platinum component, a support, a NOx sorbent component, and a spinel material prepared by calcining as anionic clay material represented by the formula MmNn(OH)(2m+2n)Aa.bH2O, wherein the formula is defined herein. The sulfur tolerant NOx trap catalyst composites are highly effective with a sulfur containing fuel by trapping sulfur oxide contaminants which tend to poison conventional NOx trap catalysts used to abate other pollutants in the stream.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: April 10, 2007
    Assignee: Englhard Corporation
    Inventor: Yuejin Li