Component Also Contains Carbon (e.g., Cyanogen, Hydrogen Cyanide, Etc.) Patents (Class 423/236)
  • Patent number: 10515732
    Abstract: A sealing apparatus for mitigating emissions of a hazardous gas flowing between first and second regions. A body of the apparatus includes at least one inlet, at least one outlet spaced apart from the at least one inlet, and a channel connecting the at least one inlet and the at least one outlet in fluid communication. Treatment material housed in at least a portion of the channel is adapted to treat the hazardous gas to form a conditioned gas. In use, the hazardous gas being emitted from the first region is received at the at least one inlet, and the conditioned gas is discharged to the second region at the at least one outlet. The apparatus may be used in combination with a storage container housing radioactive or other toxic waste.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 24, 2019
    Assignee: ATOMIC ENERGY OF CANADA LIMITED
    Inventors: Malcolm James Clough, Jintong Li, Harry Adams, Randy Hampel, Neil Briden, Naweed Munir
  • Patent number: 10267196
    Abstract: The present disclosure is directed at treatment of reductant urea solutions with water soluble organometallic catalyst precursors which convert to active catalyst compounds in diesel exhaust gas systems. The active catalysts then promote hydrolysis of isocyanic acid into ammonia and/or decomposition of relatively high molecular weight deposits which deposits may otherwise reduce selective catalytic reduction efficiency.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 23, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Ryan C. Hartley, Gordon J. J. Bartley
  • Patent number: 9302910
    Abstract: The invention relates to a short-flow process for desulfurization of circulating hydrogen and a device for the same. A short-flow process for desulfurization of circulating hydrogen is provided, comprising: (a) removing hydrocarbons from the circulating hydrogen mixture, so that the liquid drops of the heavy hydrocarbons in the dispersion phase are separated from the circulating hydrogen in the continuous phase, and a heavy hydrocarbon phase and a mixture phase of circulating hydrogen containing sulfur are obtained; (b) further separating the resultant mixture phase to remove the sulfides therein, so that circulating hydrogen without sulfur is obtained; (c) further separating the resultant circulating hydrogen without sulfur to remove the amine solution therein, so that purified circulating hydrogen is obtained. The invention also provides a device for desulfurization of circulating hydrogen.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: April 5, 2016
    Assignees: SHANGHAI HUACHANG ENVIRONMENT PROTECTION CO., LTD., LUOYANG PETROCHEMICAL ENGINEERING CORPORATION (LPEC)/SINOPEC
    Inventors: Hualin Wang, Ji Ma, Zhuoqun Qian, Yanhong Zhang, Liquan Li, Qian Zeng, Chonggang Chen, Qiang Yang, Xiaomei Xu, Xin Cui
  • Patent number: 9186613
    Abstract: Certain aspects and examples are directed to sorbent devices and methods of using them. In certain embodiments, a sorbent device comprising a body comprising a sampling inlet, a sampling outlet and a cavity between the inlet and the outlet, the cavity comprising a serial arrangement of at least four different sorbent materials is described. In some embodiments, the sorbent materials are arranged from a material with a weakest sorbent strength to a material with a strongest sorbent strength with the weakest sorbent strength material adjacent to the sampling inlet.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: November 17, 2015
    Assignee: PERKINELMER HEALTH SCIENCES, INC.
    Inventors: Lee Marotta, Miles Snow
  • Patent number: 8974759
    Abstract: This invention pertains to processes for selectively oxidizing hydrogen cyanide contained in syngas using permanganate anion as an oxidant contained in an aqueous solution that is contacted with the syngas under certain conditions of temperature, pressure and duration of contact.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: March 10, 2015
    Assignee: Coskata, Inc.
    Inventor: Richard E Tobey
  • Patent number: 8926928
    Abstract: The invention includes a process for reducing the amount of HCN discharged to atmosphere from a FCC unit, having a regenerator and a means for collecting and supporting catalyst particles. The process comprises adding a catalyst to the regenerator flue gas prior to entering the collecting means and precipitating the catalyst in the collecting means to form a catalyst bed. Ammonia or ammonia precursor is optionally added to the flue gas. The flue gas HCN is reacted in the presence of water and oxygen in the flue gas, and optional ammonia or ammonia precursor, at 200° C. to 800° C. in the presence of the catalyst bed to reduce the HCN amount, and the flue gas containing a reduced amount of HCN is discharged to atmosphere. The catalyst is one or more supported transition or lanthanide metal catalysts. The process can also be utilized in any combustion process.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: January 6, 2015
    Assignee: Johnson Matthey Process Technologies, Inc.
    Inventors: Martin Evans, Raymond Paul Fletcher, Xunhua Mo
  • Publication number: 20140369915
    Abstract: Provided are a catalyst for hydrolysis and use of a titanium dioxide-based composition which are capable of removing COS and HCN simultaneously at high degradation percentages. The catalyst for hydrolysis is a catalyst for hydrolysis of carbonyl sulfide and hydrogen cyanide, having at least: an active component containing, as a main component, at least one metal selected from the group consisting of barium, nickel, ruthenium, cobalt, and molybdenum; and a titanium dioxide-based support supporting the active component.
    Type: Application
    Filed: February 14, 2013
    Publication date: December 18, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masanao Yonemura, Toshinobu Yasutake, Shuji Fujii, Koji Higashino, Makoto Susaki, Kaori Yoshida
  • Patent number: 8895274
    Abstract: Processes are disclosed for the conversion of biomass to oxygenated organic compound using a simplified syngas cleanup operation that is cost effective and protects the fermentation operation. The processes of this invention treat the crude syngas from the gasifier by non-catalytic partial oxidation. The partial oxidation reduces the hydrocarbon content of the syngas such as methane, ethylene and acetylene to provide advantageous gas feeds for anaerobic fermentations to produce oxygenated organic compounds such as ethanol, propanol and butanol. Additionally, the partial oxidation facilitates any additional cleanup of the syngas as may be required for the anaerobic fermentation. Producer gases and partial oxidation processes are also disclosed.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: November 25, 2014
    Assignee: Coskata, Inc.
    Inventors: Richard E. Tobey, Jianxin Du, Ralph Corley
  • Patent number: 8889089
    Abstract: A process for a reduction in the amount of sulphur compounds, hydrogen cyanide, formic acid and formic acid derivatives in synthesis gas comprising these compounds, the process comprising contacting the synthesis gas with a sulphur absorbent comprising material and thereafter with a catalyst comprising one or more metals selected from the group consisting of silver, gold, copper, palladium, platinum and their mixtures and supported on a carrier comprising at least one of the oxides of scandium, yttrium, lanthanum, cerium, titanium, zirconium, aluminum, zinc, chromium and molybdenum.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: November 18, 2014
    Assignee: Haldor Topsoe A/S
    Inventors: Kim Aasberg-Petersen, Ib Dybkjaer, Poul Erik Højlund Nielsen
  • Patent number: 8840806
    Abstract: Provided is an absorbent for capturing carbon dioxide. The absorbent may include an amino acid with multiple amine groups and an alkali-metal hydroxide mixed with the amino acid and thus, may increase an absorption capacity for carbon dioxide. When a sterically hindered effect is induced to the amino acid with multiple amine groups, the absorption capacity for carbon dioxide may increase and heat of absorption reaction may decrease and thus, energy consumed for regeneration of an absorbent may be reduced. The absorbent for capturing carbon dioxide may include amino acid with multiple amine groups and the metal hydroxide, and may provide a functional group around the amine groups to cause an sterically hindered effect and thus, the absorption capacity for carbon dioxide and an carbon dioxide absorption rate may increase, and the capital cost for a carbon dioxide capturing process and an operating cost may be significantly reduced.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: September 23, 2014
    Assignee: Korea Institute of Energy Research
    Inventors: Soon Kwan Jeong, Sung Chan Nam, Si Hyun Lee, Sang Do Kim, Dong Hyuk Jeon, Yeo Il Yoon, Il Hyun Baek, Jin Ah Lim, Dae Hoon Kim
  • Publication number: 20140241969
    Abstract: The invention includes a process for reducing the amount of HCN discharged to atmosphere from a FCC unit, having a regenerator and a means for collecting and supporting catalyst particles. The process comprises adding a catalyst to the regenerator flue gas prior to entering the collecting means and precipitating the catalyst in the collecting means to form a catalyst bed. Ammonia or ammonia precursor is optionally added to the flue gas. The flue gas HCN is reacted in the presence of water and oxygen in the flue gas, and optional ammonia or ammonia precursor, at 200° C. to 800° C. in the presence of the catalyst bed to reduce the HCN amount, and the flue gas containing a reduced amount of HCN is discharged to atmosphere. The catalyst is one or more supported transition or lanthanide metal catalysts. The process can also be utilized in any combustion process.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Applicant: Intercat, Inc.
    Inventors: Martin EVANS, Raymond Paul FLETCHER, Xunhua MO
  • Patent number: 8772361
    Abstract: A process for producing a purified synthesis gas stream from a feed synthesis gas stream comprising besides the main constituents carbon monoxide and hydrogen also hydrogen sulphide, HCN and/or COS, the process comprising the steps of: (a) contacting one part of the feed synthesis gas stream with a water gas shift catalyst in a shift reactor in the presence of water and/or steam to react at least part of the carbon monoxide to hydrogen and carbon dioxide, to obtain a shifted synthesis gas stream enriched in hydrogen and in carbon dioxide; (b) contacting another part of the feed gas stream with a hydrolysis catalyst in the presence of water to remove HCN and/or COS to obtain a hydrolysed synthesis gas stream depleted in HCN and/or COS; (c) removing H2S from the shifted synthesis gas stream and from the hydrolysed synthesis gas stream by contacting these gas streams in a H2S-removal zone with an aqueous alkaline washing liquid to obtain a H2S-depleted synthesis gas stream and a sulphide-comprising aqueous strea
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: July 8, 2014
    Assignee: Shell Oil Company
    Inventor: Gerald Sprachmann
  • Publication number: 20140147360
    Abstract: Disclosed are methods, materials, apparatus and systems for removing or suppressing ambient levels of reactive gas contaminants, particularly acidic gases, using particles of zeolite, sepiolite or other suitable carrier material impregnated with at least one treatment compound selected to react with the acidic gas(es). The methods involve contacting a contaminated gas stream with the impregnated carrier materials whereby at least a portion of the reactive gases contacts the treatment compound and reacts, thereby consuming the reactive gas molecules.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 29, 2014
    Inventors: John Richardson, Kevin Gottschalk
  • Patent number: 8668887
    Abstract: Methods and systems are provided for the in situ generation of polysulfide ions in a process stream including S2? and/or HS? ions. Methods and systems are also provided to ameliorate corrosion in a process stream containing an acid gas or a scrubbing agent solvent, and abate mercury and cyanide in process streams containing a scrubbing agent solvent.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: March 11, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Gordon Bryce McGarvey, Robert J. Falkiner, David R. Slim, Bryan M. Knickerbocker
  • Publication number: 20140065045
    Abstract: This invention pertains to processes for selectively oxidizing hydrogen cyanide contained in syngas using permanganate anion as an oxidant contained in an aqueous solution that is contacted with the syngas under certain conditions of temperature, pressure and duration of contact.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 6, 2014
    Applicant: COSKATA, INC.
    Inventor: RICHARD E. TOBEY
  • Patent number: 8617501
    Abstract: The invention relates to a process for finally removing sulphur-containing, nitrogen-containing and halogen-containing impurities contained in a synthesis gas, said process including: a) a joint step for hydrolysing COS and HCN contained in the gas and for collecting the halogen-containing compounds, using a TiO2-based catalyst, b) a washing step using a solvent, c) a step for desulphurization on a collecting or adsorbing mass. The synthesis gas purified in accordance with the process of the invention contains less than 10 ppb by weight, less than 10 ppb by weight of nitrogen-containing impurities and less than 10 ppb by weight of halogen-containing impurities.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: December 31, 2013
    Assignee: IFP Energies nouvelles
    Inventors: David Chiche, Nicolas Boudet, Jean Christophe Viguie, Marc Antoine Lelias, Olivier Ducreux
  • Patent number: 8501133
    Abstract: A catalyst for treating exhaust gases containing nitrogen monoxide, carbon monoxide and volatile organic compounds includes a plurality of layers, an upper layer of which has an active component contained uniformly therein and a lower layer of which has no active component contained therein. The catalyst is obtained through the steps of: forming the lower layer by coating the surface of substrate with a slurry of a porous inorganic compound, followed by drying; and forming the upper layer, which is to be the top surface of the catalyst, by coating the surface of the lower layer with a slurry of a porous inorganic compound that has the active component composed of one or more precious metals supported thereon, followed by drying. The oxidation power of the resulting catalyst is enhanced without increasing the amount of precious metal supported thereon.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: August 6, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Katsumi Nochi, Masanao Yonemura, Yoshiaki Obayashi, Hitoshi Nakamura
  • Patent number: 8475570
    Abstract: The invention provides a process for producing purified gas from feed gas comprising H2S, CO2 and HCN and/or COS, the process comprising the steps of: (a) contacting feed gas comprising H2S, CO2 and HCN and/or COS with a HCN/COS hydrolysis sorbent in the presence of water in a HCN/COS hydrolysis unit, thereby obtaining gas depleted in HCN and/or COS; (b) contacting the gas depleted in HCN and/or COS with absorbing liquid in an H2S/CO2 absorber to remove H2S and CO2, thereby obtaining the purified gas and absorbing liquid rich in H2S and CO2; (c) heating and de-pressurizing at least part of the absorbing liquid rich in H2S and CO2 to obtain hot flash gas enriched in CO2 and absorbing liquid enriched in H2S; (d) contacting the absorbing liquid enriched in H2S at elevated temperature with a stripping gas, thereby transferring H2S to the stripping gas to obtain regenerated absorbing liquid and stripping gas rich in H2S; and (e) leading at least part of the flash gas enriched in CO2 to the HCN/COS hydrolysis unit
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: July 2, 2013
    Assignee: Shell Oil Company
    Inventors: Anthonius Maria Demmers, Sandra Schreuder
  • Patent number: 8361421
    Abstract: The present invention provides a method of treating a raw syngas stream and an apparatus therefor. In the method a raw syngas stream is passed to a hydrolysis unit to provide a hydrolysed syngas stream and a condensed water stream. The hydrolysed syngas stream is passed to an acid gas removal unit to separate H2S and a part of the CO2 from the hydrolysed syngas stream to provide a treated syngas stream and an acid off-gas stream. The acid off-gas stream and a sulphur dioxide-comprising stream are passed to a catalytic zone to react H2S in the acid off-gas stream with SO2 in the sulphur dioxide-comprising stream to provide an elemental sulphur stream and a catalytic zone off-gas stream.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: January 29, 2013
    Assignee: Shell Oil Company
    Inventor: Sandra Schreuder
  • Patent number: 8303849
    Abstract: A method of HCN removal from syngas including treating a hot syngas stream for conversion to chemical products by removing various components from the hot syngas stream by: passing the hot syngas stream to a scrubber; adding aldehyde to a circulating scrubber water; capturing ammonia and HCN in the circulating scrubber water and condensing water from the hot syngas stream into the circulating scrubber water; withdrawing a scrubber waste water effluent from the scrubber comprising absorbed ammonia, ammonium, and absorbed HCN, and glycol nitriles, formed from the reaction of the aldehydes with HCN, from the scrubber; withdrawing a treated syngas stream effluent from the scrubber having a reduced concentration of ammonia and HCN; and, passing at least a portion of the scrubber waste water effluent stream to a biological treatment zone for the removal of ammonia, absorbed HCN, and glycol nitriles.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: November 6, 2012
    Assignee: Coskata, Inc.
    Inventor: Robert Hickey
  • Patent number: 8258193
    Abstract: The invention provides a process for removal of HCN and NH3 from synthesis gas, the process comprising the steps of: (a) contacting feed synthesis gas comprising HCN with a HCN hydrolysis sorbent in the presence of water, thereby obtaining synthesis gas comprising NH3; (b) contacting the synthesis gas comprising NH3 with an acidic cation exchange resin in the presence of water to remove NH3, thereby obtaining purified synthesis gas.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: September 4, 2012
    Assignee: Shell Oil Company
    Inventors: Rudolf Henri Max Herold, Thijme Last, Cornelis Jacobus Smit
  • Patent number: 8142746
    Abstract: The present invention relates to the selective separation of carbon dioxide (“CO2”) from methane (“CH4”) in streams containing both carbon dioxide and methane utilizing a zeolitic imidazolate framework (“ZIF”) material. Preferably, the stream to be separated is fed to the present process in a substantially gaseous phase. In preferred embodiments, the current invention is utilized in a process to separate carbon dioxide from natural gas streams preferably for sequestration of at least a portion of the carbon dioxide present in the natural gas.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: March 27, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Sebastian C. Reyes, Jose G. Santiesteban, legal representative, Zheng Ni, Charanjit S. Paur, Pavel Kortunov, John Zengel, Harry W. Deckman
  • Patent number: 8142745
    Abstract: The present invention relates to the selective separation of carbon dioxide (“CO2”) from nitrogen (“N2”) in streams containing both carbon dioxide and nitrogen utilizing a zeolitic imidazolate framework (“ZIF”) material. Preferably, the stream to be separated is fed to the present process in a substantially gaseous phase. In preferred embodiments, the current invention is utilized in a process to separate carbon dioxide from combustion gas (e.g., flue gas) streams preferably for sequestration of at least a portion of the carbon dioxide produced in combustion processes.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: March 27, 2012
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Sebastian C. Reyes, Jose G. Santiesteban, legal representative, Zheng Ni, Charanjit S. Paur, Pavel Kortunov, John Zengel, Harry W. Deckman
  • Patent number: 8128898
    Abstract: A process (10) for at least partially removing hydrogen cyanide from synthesis gas includes feeding a synthesis gas (30) containing hydrogen cyanide to a gas-liquid contacting stage (18) and, in the gas-liquid contacting stage (18), contacting the synthesis gas with an aqueous washing solution (36) comprising at least one dissolved metal salt, with metal cations of the metal salt being capable of forming metal cyanide complexes and/or metal cyanide precipitates, and weak acid anions of the metal salt serving to buffer the pH of the washing solution in a range between 6 and 10. Hydrogen cyanide is washed from the synthesis gas by the washing solution to form a treated synthesis gas (38) and a spent washing solution (40). From time to time or continuously, at least a portion of the spent washing solution is withdrawn from the gas-liquid contacting stage. The treated synthesis gas (38) is also withdrawn from the gas-liquid contacting stage.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: March 6, 2012
    Assignee: Sasol Techonology (Proprietary) Limited
    Inventors: Braam Van Dyk, John Marriott, Bavanethan Pillay, Hendrik Johannes Van Der Westhuizen, Ronél Combrink, Trevor David Phillips, Denise Louisette Venter, André´ Peter Steynberg
  • Publication number: 20120020861
    Abstract: The invention is concerned with the use of a TiO2-based composition for capturing halogenated compounds contained in a gaseous mixture, said composition comprising between 10 wt. % and 100 wt. % of TiO2 and between 1 wt. % and 30 wt. % of at least one sulfate of an alkaline-earth metal selected from calcium, barium, strontium and magnesium.
    Type: Application
    Filed: September 29, 2011
    Publication date: January 26, 2012
    Inventors: Marc-Antoine LELIAS, Olivier Ducreux, David Chiche
  • Patent number: 8052958
    Abstract: Provided is a method for manufacturing a metal oxide hollow nanoparticles with excellent properties more easily and simply by a chemical vapor condensation employing metal ?-diketonates as precursors, and a metal oxide hollow nanoparticles manufactured by the method. The method includes: preparing metal ?-diketonate as a precursor; evaporating the metal ?-diketonate at a predetermined temperature higher than a melting point of the metal ?-diketonate; transferring the evaporated metal ?-diketonate into a reaction region; thermally decomposing the transferred gaseous metal ?-diketonate and simultaneously inducing a reaction of the transferred gaseous metal ?-diketonate with oxygen to synthesize the metal oxide hollow nanoparticle; and condensing and collecting the synthesized metal oxide hollow nanoparticles.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: November 8, 2011
    Assignee: Industry-University Cooperation Foundation Hanyang University
    Inventors: Jai Sung Lee, Chang Woo Lee, Sung Soon Im
  • Patent number: 8043589
    Abstract: The invention provides a process for removing COS and H2S from a feed synthesis gas stream comprising COS and H2S, the process comprising contacting the feed synthesis gas stream with solid adsorbent at a temperature in the range of from 100 to 240° C. to remove carbonyl sulphide and hydrogen sulphide, thereby obtaining a purified synthesis gas stream, wherein the solid adsorbent comprises one or more metals or oxides of the metals or combinations thereof and the metals are selected from the group of Ag, Sn, Mo, Fe and Zn.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: October 25, 2011
    Assignee: Shell Oil Company
    Inventors: Rudolf Henri Max Herold, Thijme Last, Bernardus Josephus Maria Manshande, Cornelis Jacobus Smit
  • Patent number: 8038974
    Abstract: The present invention relates to solutions comprising water and at least one metal cyanide, at least a part of the water being obtained from wastewater which occurs as depleted wastewater in a process for extracting noble metals from noble metal-containing ores by the cyanide process, the process for the preparation of solutions according to the invention and to the use of the solutions according to the invention in a process for extracting noble metals from noble metal-containing ores by the cyanide process, to a process for extracting noble metals from noble metal-containing ores by the cyanide process, wherein the solution according to the invention is used, and to the use of depleted wastewater occurring in the extraction of noble metals from noble metal-containing ores by the cyanide process to the preparation of solutions comprising water and at least one metal cyanide.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: October 18, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Deckers, Thomas Schneider
  • Publication number: 20110250113
    Abstract: The present invention provides a method of treating a raw syngas stream and an apparatus therefor. In the method a raw syngas stream is passed to a hydrolysis unit to provide a hydrolysed syngas stream and a condensed water stream. The hydrolysed syngas stream is passed to an acid gas removal unit to separate H2S and a part of the CO2 from the hydrolysed syngas stream to provide a treated syngas stream and an acid off-gas stream. The acid off-gas stream and a sulphur dioxide-comprising stream are passed to a catalytic zone to react H2S in the acid off-gas stream with SO2 in the sulphur dioxide-comprising stream to provide an elemental sulphur stream and a catalytic zone off-gas stream.
    Type: Application
    Filed: November 27, 2009
    Publication date: October 13, 2011
    Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
    Inventor: Sandra Schreuder
  • Publication number: 20110217219
    Abstract: The invention relates to a process using a solvent combination for the gas scrubbing of industrial gases in order to separate acid gases, particularly including carbon dioxide and hydrogen sulphide. The inventive solvent combination consists of a solution of amines in water, said solution containing ammonia for improving the absorption of CO2. The group of primary and secondary amines includes all types of amines with one or two substituents. Particularly suitable as constituent of the inventive solvent combination is piperazine and piperazine derivatives.
    Type: Application
    Filed: October 15, 2009
    Publication date: September 8, 2011
    Applicant: UHDE GMBH
    Inventor: Johannes Menzel
  • Patent number: 7927513
    Abstract: A method for the high removal of ammonia, COS and HCN from syngas (along with some polishing of particulates) in a cost effective and environmentally benign and sustainable fashion, with the need for little to no chemical addition by using a combination of water based gas scrubbing, HCN scrubbing and biological processing steps.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: April 19, 2011
    Assignee: Coskata, Inc.
    Inventor: Robert Hickey
  • Patent number: 7780935
    Abstract: A process for the reduction of NOx emissions from a regeneration zone during a fluid catalytic cracking (FCC) process are disclosed. The process comprises contacting a hydrocarbon feedstock with a circulating inventory of an FCC cracking catalyst and a NOx reduction composition during an FCC process. The NOx reduction composition comprises at least one reduced nitrogen species component having the ability to reduce the content of reduced nitrogen species to molecular nitrogen under reducing or partial burn FCC conditions and at least one NOx reduction component having the ability to convert NOx to molecular nitrogen under oxidizing or full burn FCC conditions.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: August 24, 2010
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: John Allen Rudesill, George Yaluris, Meenakshi Sundaram Krishnamoorthy, Timothy Dougan, Katherine W. Dougan, legal representative
  • Publication number: 20100202947
    Abstract: The invention is concerned with the use of a TiO2-based composition for capturing halogenated compounds contained in a gaseous mixture, said composition comprising between 10 wt. % and 100 wt. % of TiO2 and between 1 wt. % and 30 wt. % of at least one sulfate of an alkaline-earth metal selected from calcium, barium, strontium and magnesium.
    Type: Application
    Filed: January 11, 2010
    Publication date: August 12, 2010
    Applicant: IFP
    Inventors: Marc-Antoine Lelias, Olivier Ducreux, David Chiche
  • Patent number: 7749455
    Abstract: A COS treatment apparatus for a gasified gas includes an O2 removal catalyst and a COS conversion catalyst located on the downstream side of a gasified gas flow with respect to the O2 removal catalyst. Also, a COS treatment apparatus includes a TiO2 catalyst that carries Cr2O3 or NiO. Further, a COS treatment method includes a first step in which O2 is removed by the reaction with H2S and CO, and a second step in which COS is converted to H2S.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: July 6, 2010
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masahiro Harada, Shintaro Honjo, Makoto Susaki, Kazuo Ishida, Hajime Nagano, Susumu Okino, Kozo Iida, Akira Johana
  • Publication number: 20100061905
    Abstract: A process (10) for at least partially removing hydrogen cyanide from synthesis gas includes feeding a synthesis gas (30) containing hydrogen cyanide to a gas-liquid contacting stage (18) and, in the gas-liquid contacting stage (18), contacting the synthesis gas with an aqueous washing solution (36) comprising at least one dissolved metal salt, with metal cations of the metal salt being capable of forming metal cyanide complexes and/or metal cyanide precipitates, and weak acid anions of the metal salt serving to buffer the pH of the washing solution in a range between 6 and 10. Hydrogen cyanide is washed from the synthesis gas by the washing solution to form a treated synthesis gas (38) and a spent washing solution (40). From time to time or continuously, at least a portion of the spent washing solution is withdrawn from the gas-liquid contacting stage. The treated synthesis gas (38) is also withdrawn from the gas-liquid contacting stage.
    Type: Application
    Filed: October 29, 2007
    Publication date: March 11, 2010
    Applicant: SASOL TECHNOLOGY (PROPRIETARY) LIMITED
    Inventors: Braam van Dyk, John Marroptt, Bavanethan Pillay, Hendrik Johannes van Der Westhuizen, Ronél Combrink, Trevor David Phillips, Denise Louisette Venter, André Peter Steynberg
  • Patent number: 7655205
    Abstract: Disclosed is a process for the removal of sulfur from a gas stream containing sulfur dioxide, hydrogen cyanide and hydrogen sulfide. The process includes a hydrogenation step, a hydrolysis step, an ammonia removal step and a hydrogen sulfide removal step. An aqueous alkaline washing liquid is used in the hydrogen sulfide removal step and with the spent sulfide containing washing liquid being regenerated using an oxidation bioreactor that utilizes sulfide oxidizing bacteria such as autotropic aerobic cultures of Thiobacillus and Thiomicrospira.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: February 2, 2010
    Assignee: Shell Oil Company
    Inventors: Petrus Franciscus Antonius Van Grinsven, Wiebe Sjoerd Kijlstra, Inge Roos, Cornelis Jacobus Smit
  • Patent number: 7569200
    Abstract: The present invention relates to a method for reducing nitrogen oxide emissions in combustion. Fuel is combusted in a first zone, whereby nitrogen oxides are generated. Supplementary fuel is fed in another zone under reducing conditions. At the same time, the temperature is adjusted so that nitrogen oxides convert essentially to hydrogen cyanide. Finally, air is fed in for finalizing the combustion and converting the hydrogen cyanide into nitrogen.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: August 4, 2009
    Assignee: Andritz Oy
    Inventors: Edgardo Coda Zabetta, Mikko Hupa, Kari Saviharju
  • Publication number: 20090185967
    Abstract: The invention concerns a composition based on zirconium oxide and cerium oxide and, optionally, an oxide of another rare earth, characterized in that it contains tin oxide in a proportion of more than 25 wt. % of oxide. Said composition is obtained by a method which consists in forming a mixture comprising zirconium, cerium and tin compounds and, optionally a compound of another rare earth; in bringing said mixture in the presence of a basic compound whereby a precipitate is obtained; heating said precipitate in an aqueous medium and calcining same. The composition can be used as catalyst, in particular for treating motor vehicle exhaust gases.
    Type: Application
    Filed: March 11, 2005
    Publication date: July 23, 2009
    Inventors: Alain Demourgues, Stephan Verdier
  • Publication number: 20090074643
    Abstract: A process for the catalytic removal of hydrogen cyanide, formic acid and formic acid derivatives from synthesis gas comprising these compounds, carbon monoxide and hydrogen, the process comprising contacting the synthesis gas with a catalyst comprising one or more metals selected from the group consisting of silver, gold, copper, palladium, platinum and their mixtures and supported on a carrier comprising at least one of the oxides of scandium, yttrium, lanthanum, cerium, titanium, zirconium, aluminium, zinc, chromium and molybdenum.
    Type: Application
    Filed: April 18, 2007
    Publication date: March 19, 2009
    Inventors: Karsten Pedersen, Poul Erik Hojlund Nielsen, Ib Dybkjaer, Jesper Nerlov
  • Patent number: 7494634
    Abstract: Systems and methods of removing at least nitrogen oxides from an exhaust fluid generally include dividing a flow of an exhaust fluid comprising a concentration of nitric oxide into three types of flow-through cells. The first flow-through cell comprises a catalyst configured to reduce the nitric oxide with a reductant to form a first feedstream comprising nitrogen containing species derived therefrom. The second flow-through cell comprises a catalyst configured to oxidize nitric oxide to form a second feedstream comprising nitrogen dioxide. The third flow-through cell does not change the nitric oxide concentration and form a third feedstream comprising nitric oxide. After flowing through the three different types of cells, the feedstreams are mixed to form a homogenous mixture and then fed to a catalyst bed configured to convert the nitrogen containing species, the nitric oxide, and the nitrogen dioxide to a fluid comprising nitrogen gas and water.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: February 24, 2009
    Assignee: General Electric Company
    Inventors: Frederic Vitse, Dan Hancu, Benjamin Hale Winkler
  • Patent number: 7485275
    Abstract: A method is provided for removing acid gases and ammonia from a fluid stream in which a fluid stream comprising acid gases and ammonia is brought into contact with an aqueous absorption medium. The fluid stream is depleted of acid gases and ammonia and the absorption medium stream, which is charged with acid gases and ammonia, is regenerated in a desorption step. The acid gases and the ammonia are stripped out of the absorption medium and the condensable fractions thereof are condensed. A condensate and also a purified absorption medium stream are obtained. The condensate is ejected in part or completely from the desorption step, or feed in part or completely to a distillation column in which ammonia is separated off overhead as an aqueous solution or in the pure state. A aqueous bottom stream is obtained which is recycled to the absorption step or the desorption step.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: February 3, 2009
    Assignee: BASF SE
    Inventors: Norbert Asprion, Ute Lichtfers, Christoph Groβmann
  • Patent number: 7481988
    Abstract: A method for obtaining an acid gas stream having a pressure of from 3 to 30 bar by removal of acid gases from a fluid stream containing H2S, the molar fraction of H2S based on the total amount of acid gases being at least 50 mol %, the method comprising bringing the fluid stream into intimate contact with a liquid absorption medium, thus producing a fluid stream substantially freed from acid gases and an acid-gas-loaded liquid absorption medium; separating the fluid stream and the liquid absorption medium; separating, by heating and optionally by expansion or stripping, the liquid absorption medium into an acid gas stream and a regenerated liquid absorption medium; passing the regenerated liquid absorption medium into a heat exchanger and cooling it there by using part of its thermal energy to heat up the acid-gas-loaded liquid absorption medium; and recirculating the regenerated liquid absorption medium.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: January 27, 2009
    Assignee: BASF SE※
    Inventors: Torsten Katz, Norbert Asprion
  • Patent number: 7470412
    Abstract: A hot oxygen stream is fed into a catalyst regenerator flue gas stream that contains carbon monoxide to remove carbon monoxide. NOx precursors such as NH3 and HCN are converted into N2 and if NOx is present in the flue gas stream the addition of the hot oxygen stream lowers the amount of NOx present.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: December 30, 2008
    Assignee: Praxair Technology, Inc.
    Inventors: Lee Rosen, Kuang Tsai Wu, Mushtaq M. Ahmed
  • Patent number: 7431907
    Abstract: An apparatus includes a container that defines an interior. The interior is isolated from ambient atmosphere for receiving a composition that includes isocyanate. A conduit extends into the container and defines a channel therethrough. An interior of the container is in fluid communication with the ambient atmosphere through the channel for conveying a gaseous waste stream that includes vaporized unreacted isocyanate out of the container and into the ambient atmosphere. A medium is disposed in the channel and has free isocyanate-reactive groups for reacting with unreacted isocyanate. The free isocyanate-reactive groups remove the unreacted isocyanate from the gaseous waste stream. The medium, by including the free isocyanate-reactive groups, relies on a chemical reaction to remove the unreacted isocyanate.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: October 7, 2008
    Assignee: BASF Corporation
    Inventors: Yogesh C. Trivedi, Theodore M. Smiecinski
  • Patent number: 7429366
    Abstract: A solution of a chromium compound is impregnated into a silica-alumina carrier made of alumina and containing 1 to 5 weight % of silica relative to the weight of the carrier, thereby to obtain a decomposing catalyst carrying 10 to 15 weight % of chromium oxide relative to the weight of the catalyst in terms of Cr2O3. By contacting mixed gas obtained through partial oxidation of heavy oil and/or coal with the decomposing catalyst, COS and HCN contained in the mixed gas are decomposed/removed. In this case, transition of alumina into boehmite can be suppressed owing to coexistence of silica and chromium oxide, so that COS and HCN can be decomposed by highly active catalytic reactions over a long time.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: September 30, 2008
    Assignees: JGC Corporation, Catalysts & Chemicals Industries Co., Ltd, Sud-Chemie Catalysts Japan, Inc.
    Inventors: Satomi Ishigaki, legal representative, Aya Ishigaki, legal representative, Akane Ishigaki, legal representative, Tatsuya Ishigaki, legal representative, Eiichi Hosoya, Kazutaka Egami, Shinya Ishigaki
  • Patent number: 7387768
    Abstract: The invention relates to the use of an absorption liquid for purifying gases from gaseous acidic contaminants, the absorption liquid comprising A) 0.1 to 100% by weight of one or more amines of the formula I where R1 is H, C1-C6-alkyl, an aromatic radical having 6 to 18 carbon atoms or a radical of the formula 2 R2 is H, C1-C6-alkyl, an aromatic radical having 6 to 18 carbon atoms or a radical of the formula 3 R3 is C1-C6-alkyl or an aromatic radical having 6 to 18 carbon atoms R4 is H or CH3 R5 is H or CH3 x is a number from 0 to 3 y is a number from 0 to 3 z is an integer between 1 and 30, and also, if appropriate, B) 0 to 99.9% by weight of water, and/or C) 0 to 99.9% by weight of any desired solvent.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: June 17, 2008
    Assignee: Clariant Produkte (Deutschland) GmbH
    Inventors: Horst Streitberger, Oliver Pfueller, Achim Stankowiak, Alexander Snell, Norbert Mollekopf, Hans-Dieter Mueller
  • Patent number: 7374734
    Abstract: The disclosure relates to an absorbent for removing acid gases from fluids. The absorbent contains at least one tertiary amine, an amine which is selected from hydroxyethylpiperazine, bis(hydroxyethylpiperazine) or a mixture of these and piperazine. The absorbent may optionally contain a physical solvent for the acid gases.
    Type: Grant
    Filed: January 24, 2004
    Date of Patent: May 20, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Christoph Grossman, Norbert Asprion
  • 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: 6953558
    Abstract: A non-catalytic process for reducing nitrogen oxide (NOx) emissions in the combustion effluent of a stationary combustion apparatus is provided comprising contacting, in the combustion zone of the combustion apparatus, an effective amount of at least one nitrile compound with a waste stream, an auxiliary fuel stream, and air at a temperature sufficient to reduce the NOx emissions in the combustion effluent.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: October 11, 2005
    Assignee: Solutia, Inc.
    Inventor: Valerie S. Monical
  • Patent number: 6872296
    Abstract: A method for removing ammonia from a gas comprising HCN, ammonia and water, by first contacting the gas with aqueous ammonium phosphate to remove ammonia from the gas, and then passing the resulting ammonium phosphate solution through an electrolyzer to convert oxalates and formates into hydrogen and carbon dioxide.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: March 29, 2005
    Assignee: INVISTA North America S.à.r.l.
    Inventor: Tae Hoon Kim