Carbon Dioxide Sorbed Patents (Class 95/236)
  • Patent number: 8491712
    Abstract: A dehydration system is provided. The dehydration system includes an absorber configured to produce a dry gas and a rich solvent from a wet gas and from a pure solvent and a flash drum coupled in flow communication with the absorber for receiving the rich solvent discharged from the absorber. The flash drum is configured to produce flash gas from the rich solvent. The dehydration further includes a reboiler configured to produce a semi-lean solvent from the rich solvent and an inert gas system configured to strip the semi-lean solvent using at least the flash gas to produce the pure solvent.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: July 23, 2013
    Assignee: General Electric Company
    Inventors: Ganesh Prasadh Kidambi, Sachin Naphad, Rajesh Vaddi
  • Patent number: 8491858
    Abstract: In some embodiments, the invention provides systems and methods for removing carbon dioxide and/or additional components of waste gas streams, comprising contacting the waste gas stream with an aqueous solution, removing carbon dioxide and/or additional components from the waste gas stream, and containing the carbon dioxide and/or additional components, in one form or another, in a composition. In some embodiments, the composition is a precipitation material comprising carbonates, bicarbonates, or carbonates and bicarbonates. In some embodiments, the composition further comprises carbonate and/or bicarbonate co-products resulting from co-processing SOx, NOx, particulate matter, and/or certain metals. Additional waste streams such as liquid, solid, or multiphasic waste streams may be processed as well.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: July 23, 2013
    Assignee: Calera Corporation
    Inventors: William Randall Seeker, Brent Constantz, Vinod Khosla
  • Publication number: 20130180400
    Abstract: In the carbon dioxide gas fixation method and carbon dioxide gas fixation apparatus, seawater (7) is electrolyzed, anodic electrolyzed water (7a) and cathodic electrolyzed water (7b) produced by electrolysis of the seawater are separated, alkaline material is inputted into the anodic electrolyzed water to adjust pH, carbon dioxide gas is blown into the cathodic electrolyzed water to fix the carbon dioxide gas as carbonate, and the anodic electrolyzed water after pH adjustment and the cathodic electrolyzed water after carbonate fixation are intermixed, and discharged in a state where a pH of the intermixed water is identical to a pH of the seawater. As a result, it is possible to offer a carbon dioxide gas fixation method and a carbon dioxide gas fixation apparatus which fix carbon dioxide gas with little impact on the environment, and without risk of re-release.
    Type: Application
    Filed: August 30, 2011
    Publication date: July 18, 2013
    Inventors: Tatsushi Iwamoto, Kenichi Akamine, Junichi Okuyama
  • Patent number: 8486182
    Abstract: According to one embodiment, a method for removing carbon dioxide in an exhaust gas utilizing seawater includes: blowing ammonia into seawater to produce ammonia-saturated seawater; contacting an exhaust gas under a state of non-heat with the ammonia-saturated seawater so that carbon dioxide in the exhaust gas is absorbed in the ammonia-saturated seawater; and splaying a solution containing sodium hydrogen carbonate and ammonium chloride which are produced through absorption of the carbon dioxide by the ammonia-saturated seawater utilizing pressure of the exhaust gas while cooling the solution utilizing heat of evaporation of a solvent of the solution so as to settle out and recover the sodium hydrogen carbonate and the ammonium chloride.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: July 16, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenji Sano, Yukishige Maezawa, Toru Ushirogouchi
  • Patent number: 8480798
    Abstract: A system for separating and storing carbon dioxide (CO2) in exhaust produced by an internal combustion engine. The system uses a scrubber tank containing a carbon dioxide absorbent fluid to capture CO2 in the exhaust. The system also includes a carbon dioxide storage means configured to temporarily store the captured CO2, and a CO2 recovery facility to refine the captured CO2 for future use or prepare the CO2 for permanent storage. The system is intended for installation on vehicles such as automobiles to reduce the amount of CO2 emitted by automobiles into the environment, but could also be used for other applications such as stationary power generators.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: July 9, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Bruce A. Myers, David W. Ihms
  • Patent number: 8480787
    Abstract: A system includes an ultrasound wave generator, a fluid cavity coupled to the ultrasound wave generator, an array of micro-machined ultrasonic-assisted electrospray nozzles coupled to the fluid cavity, an electrode configured to impart a charge onto the fluid output of the electrospray nozzles, and a carbon dioxide release unit configured to receive the ionic liquid after absorption of carbon dioxide by the ionic liquid and to remove carbon dioxide from the ionic liquid such that the regenerated ionic liquid can be recycled for additional carbon dioxide capture.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: July 9, 2013
    Assignee: Honeywell International Inc.
    Inventors: Alex Gu, Adam Dewey McBrady, Wei Yang, Tariq Samad
  • Patent number: 8480790
    Abstract: Method of producing syngas in an IGCC system, comprising compressing and heating carbon dioxide-rich gas to produce heated compressed carbon dioxide-rich gas, mixing the heated compressed carbon dioxide-rich gas with oxygen and feedstock to form a feedstock mixture, subjecting the feedstock mixture to gasification to produce syngas, cooling the syngas in a radiant syngas cooler, contacting syngas cooled in the radiant syngas cooler with compressed carbon dioxide-rich gas to further cool the syngas, and removing an amount of carbon dioxide-rich gas from the product mixture and compressing the removed carbon dioxide-rich gas prior to mixing with oxygen and feedstock.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: July 9, 2013
    Assignee: General Electric Company
    Inventors: John Duckett Winter, Paul Steven Wallace, George Gulko, Pradeep S. Thacker
  • Patent number: 8480796
    Abstract: Disclosed is a formulation for the absorption of CO2, which comprises water, at least one CO2 absorption compound and a carbonic anhydrase as an activator to enhance the absorption capacity of the CO2 absorption compound. The invention also concerns the use of carbonic anhydrase, in a CO2 absorption solution to increase the CO2 absorption rate of such solution.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: July 9, 2013
    Assignee: CO2 Solution Inc.
    Inventors: Sylvie Fradette, Olivera Ceperkovic
  • 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: 8475571
    Abstract: In one embodiment, a gas purification system is provided. The system includes a first solvent section having a first carbon dioxide (CO2) absorber, a hydrogen sulfide (H2S) absorber, and a first solvent path that routes a first solvent through the first CO2 absorber and the H2S absorber. The gas purification system also includes a second solvent section having a second carbon dioxide (CO2) absorber and a second solvent path that flows a second solvent through the second CO2 absorber. The gas purification system has a gas path though the first and second solvent sections, wherein the first and second solvent paths are separate from one another, and the first and second solvents are different from one another.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: July 2, 2013
    Assignee: General Electric Company
    Inventors: Judith Pauline Oppenheim, Anindra Mazumdar
  • Patent number: 8475566
    Abstract: The present invention relates to a method for recovery of carbon dioxide from a gas stream. The method is a two-step method in which carbon dioxide is compressed in the first step, while the residual carbon dioxide is recovered by an absorption process in a subsequent step. The present invention also relates to the use of the method for the recovery of carbon dioxide and a plant for recovery of carbon dioxide.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: July 2, 2013
    Assignee: Union Engineering A/S
    Inventor: Rasmus Find
  • Patent number: 8470074
    Abstract: Improved CO2 sorbents comprised of a mesoporous silica functionalized with a polyamine are obtained by the in-situ polymerization of azetidine. Also included herein are processes utilizing the improved CO2 sorbents wherein CO2 is chemisorbed onto the polyamine portion of the sorbent and the process is thermally reversible.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: June 25, 2013
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Lisa S. Baugh, David C. Calabro, Quanchang Li, Enock Berluche
  • Patent number: 8460437
    Abstract: The present invention provides a method and apparatus for the treatment of process gas from an anaerobic digestion system or a landfill gas system. In one embodiment, the system comprises a caustic scrubber including a vertical column having a top and a bottom and including a counter current flow system, wherein a process gas stream flows up vertically through the column in counter current flow to a caustic liquid solution that flows downward through the column. The caustic liquid solution removes at least one acid from the process gas stream, wherein treated gas that is substantially free of acids bubbles out through an opening at the top of the vertical column.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: June 11, 2013
    Assignee: Clean Energy Renewable Fuels, LLC
    Inventor: Jeffrey J. Grill
  • Patent number: 8460431
    Abstract: A method for regenerating an amine-containing scrubbing solution which is obtained during gas purification and in which CO2 and sulfur compounds are chemically bonded, as well as a system that is suitable for carrying out the method. The contaminated scrubbing solution is heated, compressed, and expanded in several stages such that CO2 and sulfur compounds are separated. The expanded scrubbing solution is subdivided into two partial streams, and one partial stream is recirculated into the process.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: June 11, 2013
    Assignee: MT-Biomethan GmbH
    Inventor: Lothar Günther
  • Patent number: 8460436
    Abstract: The present invention relates processes of removal of acidic gases from a gas stream, comprising the steps of a) contacting a wash solution stream with said gas stream containing acidic gases to be removed to allow absorption of the acidic gases into the wash solution stream; b) withdrawing wash solution enriched with acidic gases from said wash solution stream at a first withdrawal level; c) cooling said withdrawn wash solution; and d) reintroducing said cooled wash solution to the wash solution stream at a first reintroduction level to form a mixed wash solution stream, said first reintroduction level being upstream of said first withdrawal level. The present invention also relates to systems for removal of acidic gases from a gas stream.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: June 11, 2013
    Assignees: Alstom Technology Ltd, Dow Global Technologies LLC
    Inventors: Barath Baburao, Craig Schubert
  • Publication number: 20130139687
    Abstract: The invention relates to a method for separating off carbon dioxide from a gas mixture containing hydrogen, carbon monoxide and carbon dioxide, which gas mixture is produced as residual gas in an alcohol synthesis. The residual gas is subjected to a physical gas scrubbing in which carbon dioxide is scrubbed out of the residual gas in an absorption step by means of a low-temperature alcohol used as the scrubbing medium.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 6, 2013
    Applicant: LINDE AKTIENGESELLSCHAFT
    Inventor: Linde Aktiengesellschaft
  • Publication number: 20130140230
    Abstract: A method for removing methane from biogas is described. The method includes: (i) receiving biogas including methane and other components into a first tank; (ii) receiving water into the first tank; (iii) contacting the biogas with the water inside the first tank; (iv) dispensing methane gas from an outlet of the first tank; and (v) producing from the tank an effluent stream that includes other components of the biogas.
    Type: Application
    Filed: January 25, 2013
    Publication date: June 6, 2013
    Inventor: Christopher OTT
  • Patent number: 8454731
    Abstract: Vapor-liquid contacting apparatuses comprising a primary contacting zone and a secondary contacting zone are disclosed. A representative secondary contacting zone is a secondary absorption zone, such as a finishing zone for subsequent contacting of the vapor effluent from the primary contacting zone to further remove impurities and achieve a desired purity of purified gas exiting the secondary absorption zone. The secondary contacting zone is disposed below the primary contacting zone, such that the secondary contacting zone, which must operate efficiently in removing generally trace amounts of remaining impurities, is more protected from movement than the more elevated, primary or initial contacting stages for bulk impurity removal. The apparatuses are therefore especially beneficial in offshore applications where they are subjected to rocking.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: June 4, 2013
    Assignee: UOP LLC
    Inventor: Zhanping Xu
  • Patent number: 8440006
    Abstract: An apparatus 100 for scrubbing flue gas 122, the apparatus 100 including a tower 140 having an inlet 120 receiving a flow of flue gas 122 and a recycle tank portion 142; a fluid 162 disposed in the recycle tank portion 142; and an aerator 150 having at least one opening 152 for introduction of an oxygen-containing gas 154 into the fluid 162, wherein the at least one opening 152 is positioned to release the oxygen-containing gas 154 at least at a distance greater than or equal to a predetermined radial distance F from the inlet 120, the predetermined radial distance F being equal to at least 10% of a diameter of the recycle tank portion 142.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: May 14, 2013
    Assignee: ALSTOM Technology Ltd
    Inventor: Dennis J. Laslo
  • Patent number: 8435330
    Abstract: A system and process is provided primarily for use in hot climates, using ammonia solution to remove carbon dioxide from desulphurised water-vapor-containing flue gases of a fossil fuel power plant, while outputting useful streams of water and fertilizer.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: May 7, 2013
    Assignee: ALSTOM Technology Ltd
    Inventors: Otto M. Bade, Charles D. Soothill
  • Patent number: 8435325
    Abstract: Disclosed are methods for recovering CO2 and H2S from a feed gas including at least CO2 and H2S.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: May 7, 2013
    Assignee: Hitachi, Ltd.
    Inventor: Tomoko Akiyama
  • Patent number: 8435331
    Abstract: In general, in one aspect, the invention relates to a method to convert carbon dioxide (CO2) to an alcohol. The method involves contacting a stream of flue gas comprising the CO2 from a combustion process with water mist to create a mixture of liquid carbonic acid (H2CO3) and wastewater. The method further involves extracting the liquid H2CO3 from the mixture and pressurizing the liquid H2CO3 to generate pressurized liquid H2CO3. The method further involves combining the pressurized liquid H2CO3 with a first liquid reagent in a first hydrolysis chamber creating the alcohol from combining the pressurized liquid H2CO3 with the first liquid reagent.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: May 7, 2013
    Assignee: Eco Power Solutions (USA) Corp.
    Inventor: Wayne S. Littleford
  • Publication number: 20130108531
    Abstract: The present invention is directed toward a method for purifying a natural gas stream comprising: 1) removing the bulk of CO2 by at least one non-membrane gas separation means; and 2) removing oxygen and other impurities by at least one additional gas separation means, wherein the final natural gas product has low level of CO2 and oxygen.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 2, 2013
    Applicant: Guild Associates, Inc.
    Inventor: Michael J. Mitariten
  • Patent number: 8425655
    Abstract: The present invention provides a gas pressurized separation system to strip a product gas from a liquid stream and yield a high pressure gaseous effluent containing the product gas. The system comprises a gas pressurized stripping apparatus, such as a column, with at least one first inlet allowing flow of one or more liquid streams in a first direction and at least one second inlet allowing flow of one or more high pressure gas streams in a second direction, to strip the product gas into the high pressure gas stream and yield through at least one outlet a high pressure gaseous effluent containing the product gas; and two or more heat supplying apparatuses provided at different locations along the column. Processes for separating a product gas from a gaseous mixture to yield a high pressure gaseous effluent containing the product gas, utilize the gas pressurized separation system described above.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: April 23, 2013
    Assignee: Carbon Capture Scientific, LLC
    Inventors: Shiaoguo Chen, Zijiang Pan
  • Patent number: 8425669
    Abstract: An air pollution control apparatus according to an embodiment of the present invention includes: a stack that discharges flue gas discharged from a boiler outside; a blower that is provided downstream of the stack and draws in the flue gas; and a CO2 recovering apparatus that recovers CO2 in the flue gas drawn in by the blower. The stack includes a controlling unit that suppresses release of the flue gas outside from the stack and suppresses inflow of atmosphere to the stack, and the controlling unit is a channel forming unit that forms a serpentine channel through which the flue gas and the atmosphere in the stack flow.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: April 23, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Masaki Iijima
  • Patent number: 8419832
    Abstract: The invention relates to a process for the purification of a gaseous mixture containing mercaptans and other acid gases comprising a stage of bringing said gaseous mixture into contact with an absorbent solution comprising an alkanolamine, a C2-C4 thioalkanol and water.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: April 16, 2013
    Assignee: Total S.A.
    Inventors: Serge Capdeville, Jean-Louis Peytavy, Georges Fremy, Didier Anglerot
  • Patent number: 8419831
    Abstract: Disclosed is a method for recovering carbon dioxide from a gas containing carbon dioxide, comprising the step (1) of bringing a gas containing carbon dioxide into contact with an aqueous solution containing 2-isopropylaminoethanol and at least one substance selected from the group consisting of piperazines and alkanolamines to absorb carbon dioxide into the aqueous solution; and the step (2) of heating the aqueous solution containing carbon dioxide absorbed therein, which is obtained in the step (1), to separate and recover carbon dioxide from the solution.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: April 16, 2013
    Assignee: Research Institute of Innovative Technology for the Earth
    Inventors: Shinkichi Shimizu, Firoz Alam Chowdhury, Hiromichi Okabe, Kazuya Goto
  • Patent number: 8419843
    Abstract: In one embodiment, a system includes a hydrogen sulfide (H2S) absorber, a first flash tank, a flash gas treatment column, and a CO2 absorber. The system also includes a first fluid path extending sequentially through the H2S absorber, the first flash tank, the flash gas treatment column, the H2S absorber, and the CO2 absorber.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: April 16, 2013
    Assignee: General Electric Company
    Inventors: Arnaldo Frydman, Pradeep Stanley Thacker, Sachin Suhas Naphad
  • Patent number: 8419829
    Abstract: A method and system for coal-to-liquids (CTL) conversion is provided. The system includes a coal gasifier configured to partially oxidize a coal fuel stream to generate a flow of synthesis gas (syngas), a Fischer-Tropsch (FT) reactor configured to receive the flow of syngas and to generate a stream of tail gas, and an absorber coupled in flow communication downstream of the FT reactor and configured to receive the stream of tail gas. The absorber is further configured to generate a first flow including carbon dioxide, C2 hydrocarbons, and higher boiling gas components (C3+) and a second flow including C1, carbon monoxide, hydrogen, and nitrogen. The system also includes a first membrane separator including a selective membrane configured to separate the second flow from the absorber generating a permeate flow of hydrogen and a non-permeate flow of combustion turbine fuel gas including methane and hydrogen.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: April 16, 2013
    Assignee: General Electric Company
    Inventor: Paul Steven Wallace
  • Patent number: 8414694
    Abstract: Provided are a CO2 absorber that reduces CO2 contained in flue gas; a regenerator that reduces CO2 contained in rich solvent absorbing CO2 to regenerate the rich solvent, so that lean solvent having the CO2 reduced in the regenerator is reused in the CO2 absorber; a heat exchanger that allows the rich solvent to exchange heat with the lean solvent; and a controller that controls to extract rich solvent portion that is part of the rich solvent, to allow the rich solvent portion to by pass the heat exchanger, and to be supplied into the top of the regenerator without exchanging heat so as to minimize a sum of an enthalpy that is taken out of the regenerator as CO2 gas accompanying steam and an enthalpy of the lean solvent after heat exchange with the rich solvent in the heat exchanger.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: April 9, 2013
    Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.
    Inventors: Masaki Iijima, Kouki Ogura, Masahiko Tatsumi, Yasuyuki Yagi
  • Patent number: 8409339
    Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A regeneration heater heats lean solution that accumulates near a bottom portion of the regeneration tower with saturated steam thereby producing steam condensate from the saturated steam. A steam-condensate heat exchanger heats the rich solution conveyed from the absorption tower to the regeneration tower with the steam condensate.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: April 2, 2013
    Assignees: Mitsubishi Heavy Industries, Ltd., Kansai Electric Power Co., Inc.
    Inventors: Masaki Iijima, Takashi Kamijo, Takahito Yonekawa, Tomio Mimura, Yasuyuki Yagi
  • Patent number: 8404027
    Abstract: A method for removal of CO2 from a flue gas stream, comprising the steps of: a) contacting a flue gas stream comprising CO2 with a first absorption liquid comprising NH3 such that the flue gas stream is depleted in CO2; b) contacting the flue gas stream depleted in CO2 of step a) with a second absorption liquid such that NH3 from the flue gas stream is absorbed in said second absorption liquid to form a flue gas stream depleted in CO2 and NH3; c) separating NH3 from the second absorption liquid such that a gas stream comprising NH3 is obtained; d) contacting said gas stream comprising NH3 separated in step c) with a third absorption liquid such that NH3 is absorbed in said third absorption liquid. A system for removal of CO2 from a flue gas stream, the system comprising: a CO2 absorption stage; an NH3 absorption stage; and a reabsorption stage.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: March 26, 2013
    Assignee: ALSTOM Technology Ltd
    Inventors: Peter Ulrich Koss, Frederic Zenon Kozak
  • Patent number: 8398743
    Abstract: A method for processing flue-gas, in an exemplary embodiment, includes providing an absorber unit having a membrane contactor, channeling a combustion flue gas along a first surface of the membrane contactor, and channeling an ammonia-based liquid reagent along a second opposing surface of the membrane contactor. The method also includes partially separating the ammonia-based liquid from the flue gas such that the ammonia-based liquid and the flue gas contact at gas-liquid interface areas, defined by a plurality of pores of the membrane contactor, to separate CO2 from the flue gas by a chemical absorption of CO2 within the ammonia-based liquid to produce a CO2-rich ammonia-based liquid.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: March 19, 2013
    Assignee: General Electric Company
    Inventors: Jennifer Lynn Molaison, Alan Smithies
  • Patent number: 8398749
    Abstract: A process for the recovery of carbon dioxide, which includes: (a) an absorption step of bringing a carbon dioxide-containing gaseous feed stream into gas-liquid contact with an absorbing fluid, whereby at least a portion of the carbon dioxide present in the gaseous stream is absorbed into the absorbing fluid to produce (i) a refined gaseous stream having a reduced carbon dioxide content and (ii) an carbon dioxide-rich absorbing fluid; and (b) a regeneration step of treating the carbon dioxide-rich absorbing fluid at a pressure of greater than 3 bar (absolute pressure) so as to liberate carbon dioxide and regenerate a carbon dioxide-lean absorbing fluid which is recycled for use in the absorption step, in which the absorbing fluid is an aqueous amine solution containing a tertiary aliphatic alkanol amine and an effective amount of a carbon dioxide absorption promoter, the tertiary aliphatic alkanol amine showing little decomposition under specified conditions of temperature and pressure under co-existence with
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: March 19, 2013
    Assignee: BASF SE
    Inventors: Ute Lichtfers, Norbert Asprion, Mark Claessen, Hiroshi Umino, Koji Tanaka
  • Patent number: 8394180
    Abstract: A method of absorbing gases into a liquid comprising providing a stream of at least one desirable gas and at least one undesirable gas, exposing the gas stream to a liquid, so that the liquid absorbs more of the desirable gas than the undesirable gas, and releasing the liquid and gas mixture into an underground formation.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: March 12, 2013
    Assignee: Shell Oil Company
    Inventors: Zaida Diaz, Raymond Nicholas French, Dean Chien Wang, Geoffrey Matthew Warren
  • Publication number: 20130055895
    Abstract: Use of an absorbent for the removal of acid gases from a fluid stream, the absorbent consisting of an aqueous solution of 1,2 diaminopropane.
    Type: Application
    Filed: December 20, 2010
    Publication date: March 7, 2013
    Applicant: THYSSENKRUPP UHDE GMBH
    Inventors: Johannes Menzel, Olaf Von Morstein
  • Patent number: 8388739
    Abstract: A method for treating natural gas using a vessel having a manifold for introducing gas in the vessel, a flow disperser above the manifold that prevents channeling of the gas, a spray system for spraying a treating liquid into an upwardly rising column of gas and, optionally, a liquid level controller for maintaining the level of a pool of treating liquid above the flow disperser.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: March 5, 2013
    Assignee: Valerus Compression Services, LP
    Inventors: Edwin W. Cash, Thomas J. Bradley
  • Patent number: 8388737
    Abstract: A method and apparatus for recovering a gaseous component from an incoming gas stream is described. The incoming gas stream is contacted with a lean aqueous absorbing medium to absorb at least a portion of the gaseous component from the incoming gas stream to form a lean treated gas stream and a rich aqueous absorbing medium. At least a portion of the gaseous component is desorbed from the rich aqueous absorbing medium at a temperature to form an overhead gas stream and a regenerated aqueous absorbing medium. At least a portion of the overhead gas stream is treated to recover a condensate stream. At least a portion of the condensate stream is used to form a heated stream. At least a portion of the heated stream is recycled back to the desorbing step. Novel absorbing medium compositions to recover carbon dioxide and/or hydrogen sulfide are also described.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: March 5, 2013
    Assignee: University of Regina
    Inventors: Don Gelowitz, Paitoon Tontiwachwuthikul, Raphael Idem
  • Patent number: 8388855
    Abstract: Novel solvents and methods of use for the removal of CO2 from flue gas, natural gas, hydrogen gas, synthesis gas, and other process and waste gas streams are provided. The solvent contains an alkali salt such as potassium carbonate and a polyamine such as piperazine (PZ) where the polyamine concentration is at least 1.5 equivalents/Kg H2O and the alkali salt concentration is at least 0.5 equivalents/Kg H2O. The preferred alkali salt/polyamine ratio is from approximately 1:2 to 2:1, and no additional alcohol is required for solubilizing the PZ. This chemical solvent and method of use provides efficient and effective removal of CO2 from gaseous streams and other sources.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: March 5, 2013
    Assignee: The Board of Regents of the University of Texas System
    Inventors: Gary T. Rochelle, John Cullinane
  • Patent number: 8388747
    Abstract: Produced natural gas containing carbon dioxide is dehydrated and chilled to liquefy the carbon dioxide and then fractionated to produce a waste stream of liquid carbon dioxide and hydrogen sulfide. Natural gas liquids may be first separated and removed before fractionation. After fractionation, the waste stream is pressurized and transmitted to a remote injection well for injection either for disposal of the waste stream and preferably to urge hydrocarbons toward the producing well. A hydrocarbon stream proceeds from fractionation to a methanol absorber system which removes carbon dioxide gas. The hydrocarbon stream is thereafter separated into at least hydrocarbon gas, nitrogen and helium. Some of the nitrogen is reintroduced into a fractionation tower to enhance the recovery of hydrocarbons. A methanol recovery system is provided to recover and reuse the methanol. The hydrocarbons are sold as natural gas and the helium is recovered and sold. Excess nitrogen is vented.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: March 5, 2013
    Inventor: Donald Leo Stinson
  • Patent number: 8388738
    Abstract: A process for removing carbon dioxide from a fluid flow, wherein a) the fluid flow is brought into contact with an absorption agent which contains a solution of ammonia and at least one amino carboxylic acid and/or amino sulfonic acid, a charged absorption agent being obtained, and b) the charged absorption agent is regenerated while releasing carbon dioxide. The additional use of the amino carboxylic acid and/or amino sulfonic acid increases the circulation absorption capacity of the absorption agent.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: March 5, 2013
    Assignee: BASF SE
    Inventors: Norbert Asprion, Georg Sieder, Ute Lichtfers, Hugo Rafael Garcia Andarcia
  • Patent number: 8377184
    Abstract: A CO2 recovery apparatus according to a first embodiment of the present invention includes: a CO2 absorber that brings flue gas containing CO2 into contact with CO2 absorbing liquid to reduce CO2 in the flue gas; a regenerator that reduces CO2 in CO2 absorbing liquid (rich solvent) that has absorbed the CO2 in the CO2 absorber to regenerate the CO2 absorbing liquid, so that the regenerated absorbing liquid (lean solvent), having CO2 reduced in the regenerator, is reused in the CO2 absorber; a first compressor to a fourth compressor that compress the CO2 gas released from the regenerator; and an O2 reducing apparatus arranged between the second compressor and a second cooler to reduce O2 in the CO2 gas.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: February 19, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Keiji Fujikawa, Takuya Hirata, Tatsuya Tsujiuchi, Tsuyoshi Oishi
  • Patent number: 8361195
    Abstract: A slurried solid media for simultaneous water purification and carbon dioxide removal from gas mixtures includes the steps of dissolving the gas mixture and carbon dioxide in water providing a gas, carbon dioxide, water mixture; adding a porous solid media to the gas, carbon dioxide, water mixture forming a slurry of gas, carbon dioxide, water, and porous solid media; heating the slurry of gas, carbon dioxide, water, and porous solid media producing steam; and cooling the steam to produce purified water and carbon dioxide.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: January 29, 2013
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Roger D. Aines, William L. Bourcier, Brian Viani
  • Patent number: 8361424
    Abstract: The gaseous effluent to be treated is contacted in C1 with an absorbent solution selected for its property of forming two separable phases when it has absorbed an amount of acid compounds and when it is heated. The absorbent solution laden with acid compounds is then heated in E1 and E3 so as to separate two fractions in BS1: a first absorbent solution fraction depleted in acid compounds and a second absorbent solution fraction enriched in acid compounds. The second fraction is regenerated in C2 so as to release part of the acid compounds, and the first absorbent solution fraction and the regenerated absorbent solution are recycled as absorbent solution. According to the invention, an absorbent solution portion circulating in C1 is cooled in E2 in order to prevent demixing of the solution in column C1.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: January 29, 2013
    Assignee: IFP
    Inventors: Pierre-Antoine Bouillon, Marc Jacquin, Ludovic Raynal
  • Patent number: 8353980
    Abstract: An apparatus and process for removing acidic gases from flue gases produced by, for example, utility and industrial facilities. The acidic gases are removed as the flue gas flows upward through a contact zone within a passage, where the flue gas is contacted with an ammonium sulfate-containing scrubbing solution to absorb the acidic gases from the flue gas. The scrubbing solution and absorbed acidic gases therein are then accumulated, and ammonia and an oxygen-containing gas are injected into the accumulated scrubbing solution to react the absorbed acidic gases and produce ammonium sulfate. An acid solution is flowed across the passage above the contact zone of the passage, and the scrubbed flue gas is flowed upward through the acid solution to remove unreacted ammonia from the scrubbed flue gas. The acid solution is then removed from the passage after the acid solution has been contacted by the scrubbed flue gas.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: January 15, 2013
    Assignee: Marsulex Environmental Technologies Corporation
    Inventor: David William Murphy
  • Patent number: 8353979
    Abstract: A heat recovery apparatus, for an absorption apparatus for removing CO2 in combustion exhaust gas emitted from a thermal power plant 112 and for regeneration apparatuses 104 to 107 for regenerating CO2 in an absorbing liquid from the absorption apparatus, includes a regeneration-apparatus-exit-CO2-gas cooling apparatus 100 for cooling CO2 gas from an exhaust port of the regeneration apparatus, and may further include a circulation line 102 for circulating reflux water among boiler feedwater heaters 114 and 116 in the thermal power plant 112 and the regeneration-apparatus-exit-CO2-gas cooling apparatus 100.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: January 15, 2013
    Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.
    Inventors: Tsuyoshi Oishi, Hiroshi Tanaka, Takahiko Endo, Masahiko Tatsumi, Yasuyuki Yagi
  • Publication number: 20130008310
    Abstract: The present disclosure relates to a method for stripping acid gases, exemplified by carbon dioxide, from absorption media and/Alcohol selected from those having a boiling point lower than the boiling point of the absorption medium and/or adsorption medium.
    Type: Application
    Filed: December 8, 2010
    Publication date: January 10, 2013
    Applicant: UNIVERSITY OF REGINA
    Inventors: Adisorn Aroonwilas, Amornvadee Veawab
  • Patent number: 8337596
    Abstract: Hydrocarbyl substituted and unsubstituted polyethylene imines and polyacrylamide salts are absorption compositions and are useful in processes for the treatment of acid gas mixtures.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: December 25, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Frank Cheng-Yu Wang, Michael Siskin
  • Patent number: 8328911
    Abstract: A method for removing and capturing carbon dioxide from a fluid stream includes the steps of exposing the fluid stream to an aqueous scrubbing solution that removes and holds carbon dioxide from the fluid stream, passing the aqueous scrubbing solution through a membrane in order to separate excess water from the scrubbing solution and increase the concentration of carbon dioxide in the scrubbing solution, heating the scrubbing solution having an increased concentration of carbon dioxide so as to release carbon dioxide gas and recycling the scrubbing solution. A carbon dioxide capture apparatus includes a carbon dioxide scrubber, a membrane downstream from the scrubber for separating water and concentrating carbon dioxide in a scrubbing solution and a stripper vessel.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: December 11, 2012
    Assignee: The University of Kentucky Research Foundation
    Inventors: Kunlei Liu, James K. Neathery, Joseph E. Remias, Xiansen Li
  • Patent number: 8323381
    Abstract: A two phase reactor includes a source of liquid reactant and a source of gas reactant. A chamber has an inlet coupled to the source of gas reactant and a flat jet nozzle coupled to the source of the liquid reactant.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: December 4, 2012
    Assignee: Neumann Systems Group, Inc.
    Inventors: William E. McDermott, David Kurt Neumann, Thomas Lee Henshaw