Liquid Contact In Plural Serial Stages Patents (Class 95/199)
  • Patent number: 9248403
    Abstract: According to one embodiment, a carbon dioxide recovery device includes an absorption tower configured to cause carbon dioxide-containing gas to come in contact with absorbing solution and to generate rich solution absorbing the carbon dioxide, a regeneration tower configured to heat the rich solution, to disperse steam containing the carbon dioxide, and to generate lean solution from which the carbon dioxide is removed, a heat exchanging device configured to exchange heat between the lean solution and the rich solution, to supply the rich solution after the heat exchange to the regeneration tower, and to supply the lean solution after the heat exchange to the absorption tower, and a cooling device configured to cool a part of the rich solution discharged from a first place of the absorption tower and to supply the cooled rich solution to a second place higher than the first place of the absorption tower.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: February 2, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mitsuru Udatsu, Hideo Kitamura, Masatoshi Hodotsuka, Satoshi Saito, Kensuke Suzuki, Noriko Chiba, Haruki Fujimoto
  • Patent number: 9162177
    Abstract: A method for capturing ammonia present in combustion flue gas subjected to carbon dioxide removal, using a water wash unit (102) included in a chilled ammonia process, comprises: providing CO2 loaded liquid (122) comprising CO2 dissolved in the liquid; providing wash water liquid (108, 138); combining the CO2 loaded liquid with the wash water liquid to form CO2 enriched wash water liquid (105, 106) before the liquid is added said water wash unit (102); and bringing said combustion flue gas into contact with said CO2 enriched wash water liquid by adding the CO2 enriched wash water liquid to said water wash unit (102).
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: October 20, 2015
    Assignee: ALSTOM Technology Ltd
    Inventors: Michael C. Balfe, Rameshwar S. Hiwale, Joseph P. Naumovitz
  • Patent number: 9039816
    Abstract: A system and method to recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray, the concentration of the liquid desiccant may be dynamically changed based on changes within the system. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: May 26, 2015
    Assignee: Z124
    Inventors: Charles Becze, James Ball, David Blatt, Michael J. Flynn, Gary Fong, Kean Wing Kin Lam, Richard Teltz
  • Patent number: 9017456
    Abstract: A device recovers water from an ambient airstream. The device includes a chamber having a group of trays that hold respective amounts of liquid desiccant. A foam media element in each tray absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and control device operation. The desiccant trays may be selectively configurable in an array to best suit the intended installation. The trays may be arranged in column and row configurations, along with adjustable airflow patterns between each of the trays.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: April 28, 2015
    Assignee: Z124
    Inventors: Charles Becze, James Ball, David Blatt, Michael J. Flynn, Richard Teltz
  • Patent number: 9011578
    Abstract: Integrated processes are provided for syngas refining and bioconversion of syngas to oxygenated organic compound. In the integrated processes ammonia contained in the syngas is recovered and used as a source of nitrogen and water for the fermentation. The integrated processes first remove tars from syngas by scrubbing using a first aqueous medium under conditions that ammonium bicarbonate is unstable. With tars removed, contact between the syngas and a second aqueous medium enables ammonia and carbon dioxide to be removed from the syngas without undue removal of components adverse to the fermentation, processing or oxygenated product such as benzene, toluene, xylene, ethylene, acetylene, and hydrogen cyanide. At least a portion of the second aqueous medium is supplied as a source of water and ammonia for the fermentation.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: April 21, 2015
    Assignee: Coskata, Inc.
    Inventors: Robert Hickey, Jianxin Du
  • Patent number: 9005349
    Abstract: A system and method to recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. Fans, valves, and manifolds are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. The airflow within the chamber and/or each tray is altered depending upon the settings of configurable airflow manifolds. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: April 14, 2015
    Assignee: Z124
    Inventors: James Ball, Charles Becze, Michael J. Flynn, Richard Teltz, Gary Fong, Kean Wing Kin Lam
  • Patent number: 8986430
    Abstract: Heat is removed from a process liquid of a direct contact condenser in waste gas cooling using two separate and distinct cooling devices that provide cooled process liquid to at least two separate sections in the direct contact condenser. Most preferably, the sections are liquidly isolated and provide the heated process liquids to the respective cooling devices. However, in other embodiments, the sections are liquidly coupled to each other so to allow transfer of the process liquid from one section to another section. One of the two cooling devices uses a lower-cost or higher-availability coolant that the other. It is generally preferred that one of the cooling devices is an air cooler and that another one of the cooling devices employs a cooling medium other than air.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: March 24, 2015
    Assignee: Fluor Technologies Corporation
    Inventors: Henry Kister, Richard B. Nielsen
  • Patent number: 8974582
    Abstract: A CO2 recovery system includes an absorber 2 and a regenerator 3. The absorber 2 includes a CO2 absorbing section 21 and a water-washing section 22. The CO2 absorbing section 21 allows flue gas 101 to come into contact with a basic amine compound absorbent 103 so that the basic amine compound absorbent 103 absorbs CO2 in the flue gas 101. The water-washing section 22 allows the decarbonated flue gas 101A in which the amount of CO2 has been reduced in the CO2 absorbing section 21 to come into contact with circulating wash water 104 and to be washed with the wash water 104 so that the amounts of the basic amine compounds entrained in the decarbonated flue gas 101A are reduced. The regenerator 3 releases CO2 from the basic amine compound absorbent 103 the CO2 absorbed therein.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: March 10, 2015
    Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co. Inc.
    Inventors: Hiromitsu Nagayasu, Takashi Kamijo, Takahito Yonekawa, Hiroshi Tanaka, Shinya Kishimoto, Takuya Hirata, Tatsuya Tsujiuchi, Masaru Chiyomaru, Koji Nakayama, Masahiko Tatsumi, Yasuyuki Yagi, Kazuhiko Kaibara
  • Patent number: 8961665
    Abstract: There is provided an exhaust gas treatment system including a CO2 recovery unit with further enhanced energy efficiency. The exhaust gas treatment system (1) includes: a CO2 recovery unit (10) including a CO2 absorption column (11), an absorbing solution regeneration column (16), a condensate supply pipeline (15) for supplying condensate, which contains CO2 absorbing solution discharged from the CO2 absorption column (11) to a bottom portion of the absorbing solution regeneration column (16), and a CO2 separation section (22) for performing heat exchange, via a heat exchanger (23), between the CO2 discharged from the absorbing solution regeneration column (16) and the condensate; and an exhaust gas heat exchanger (5) provided on a gas upstream side of the CO2 recovery unit (10) for performing heat exchange between exhaust gas before flowing into the CO2 recovery unit (10) and the condensate.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: February 24, 2015
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tatsuya Tsujiuchi, Shintaro Honjo, Takahito Yonekawa, Satoru Sugita, Motofumi Ito, Takashi Kamijo, Tatsuto Nagayasu, Takuya Okamoto
  • Patent number: 8945292
    Abstract: In one embodiment, a gas purification system is provided. The system includes a first section having a first solvent path and a first gas path. The first gas path is configured to flow a stripping gas to remove hydrogen sulfide (H2S) and carbon dioxide (CO2) from the first solvent path in a first vessel to produce a first gas mixture. The system also includes a second section having a second solvent path. The second solvent path is configured to flow a second solvent mixture to remove H2S from the first gas mixture and CO2 from the second solvent mixture within a second vessel. The second solvent mixture has a solvent saturated in CO2 at a first pressure, the second vessel is operated at a second pressure, and the first and second pressures are within approximately 20% of one another.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: February 3, 2015
    Assignee: General Electric Company
    Inventors: Judith Pauline Oppenheim, Anindra Mazumdar
  • Patent number: 8906141
    Abstract: An apparatus for separating and recovering CO2 from a CO2 absorbent, includes: a regeneration tower for regenerating the absorbent that has absorbed CO2 by heating it to separate and remove CO2 therefrom and to exhaust CO2 gas; a compressor for compressing the CO2 gas exhausted from the tower; and a heat exchanger for heating the absorbent in the tower by exchanging heat with a part of the compressed CO2 by the compressor which is introduced into the tower. The apparatus may include a plurality of the compressors and a plurality of the heat exchangers. The plurality of compressors is arranged in series to sequentially compress the CO2 gas exhausted from the tower. The plurality of heat exchangers is configured so that each part of the CO2 compressed by the plurality of compressors is introduced to the tower in parallel to exchange heat with the absorbent in the tower.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: December 9, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tatsuya Tsujiuchi, Shintaro Honjo, Takahito Yonekawa, Satoru Sugita
  • Patent number: 8882888
    Abstract: A system and method recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: November 11, 2014
    Assignee: Z124
    Inventors: James Ball, Charles Becze, David Blatt, Michael J. Flynn, Richard Teltz
  • Patent number: 8882895
    Abstract: A system and method recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to dynamically control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: November 11, 2014
    Assignee: Z124
    Inventors: James Ball, Charles Becze, Michael J. Flynn, Kean Wing Kin Lam, Richard Teltz
  • Patent number: 8876956
    Abstract: A system and method recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger, powered by a variety of power sources, adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: November 4, 2014
    Assignee: Z124
    Inventors: James Ball, Charles Becze, Michael J. Flynn, Kean Wing Kin Lam, Richard Teltz
  • Patent number: 8864883
    Abstract: A system and method recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: October 21, 2014
    Assignee: Z124
    Inventors: Charles Becze, James Ball, David Blatt, Michael J. Flynn, Gary Fong, Kean Wing Kin Lam, Richard Teltz
  • Patent number: 8858684
    Abstract: A method to recover water from the atmosphere is provided. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: October 14, 2014
    Assignee: Z124
    Inventors: Charles Becze, James Ball, David Blatt, Michael J. Flynn, Richard Teltz
  • Patent number: 8845790
    Abstract: A method and system for removing gaseous contaminants from a gas stream by contacting the gas stream with a wash solution and regenerating the wash solution in a regeneration system for future use in removing gaseous contaminants from the gas stream.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: September 30, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Jonathan W. Leister, Barath Baburao, Frederic Vitse
  • Patent number: 8845795
    Abstract: A system and method recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A media material absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. The configuration of the media material enables maximal water extraction and is dynamically configurable. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: September 30, 2014
    Assignee: Z124
    Inventors: Charles Becze, James Ball, David Blatt, Michael J. Flynn, Kean Wing Kin Lam, Richard Teltz
  • Patent number: 8840708
    Abstract: A method for recovering methane gas from a landfill involves the use of a main absorber, a flash system, an ancillary absorber and a polishing absorber. The main absorber uses a main current of solvent for absorbing most of the carbon dioxide from raw landfill gas. The flash system removes much of the carbon dioxide from the solvent exiting the main absorber. A portion of the solvent downstream of the flash system is diverted to the ancillary absorber in which a current of air removes additional carbon dioxide from that portion of solvent. From the ancillary absorber, the diverted portion of solvent flows through the polishing absorber to remove additional carbon dioxide from the main current of solvent that was previously treated in the main absorber. To increase the energy content of the processed gas, in some examples, propane is added to the final outgoing gas stream.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: September 23, 2014
    Inventors: David C. Morrow, Paul D. Morrow, Luke N. Morrow
  • Patent number: 8834614
    Abstract: A system and method recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: September 16, 2014
    Assignee: Z124
    Inventors: James Ball, Charles Becze, Michael J. Flynn, Kean Wing Kin Lam, Richard Teltz
  • Patent number: 8828130
    Abstract: An object of the present invention is to solve these problems and to provide a exhaust gas treatment system which prevents formation of deposits in a main duct and a flue, on and after the point where the exhaust gases converge, after the removal of CO2 and reduces labor required for maintenance such as cleaning, and thus enabling a long-term operation.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: September 9, 2014
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Jun Shimamura, Toshio Katsube, Shigehito Takamoto, Masaharu Kuramoto, Naoki Oda
  • Patent number: 8821615
    Abstract: The disclosure relates to a process for treating a gas mixture containing carbon dioxide and hydrogen sulphide, including the following steps: deacidificating the gas mixture by bringing the gas mixture into contact with a first lean absorbent solution stream, delivering a deacidified gas mixture, and a first rich absorbent solution stream; regenerating the first rich absorbent solution stream, delivering the first lean absorbent solution stream and a sour gas stream; distillating the sour gas stream, delivering a first carbon-dioxide-rich stream and a hydrogen-sulphide-rich stream; purifying the first carbon-dioxide-rich stream by bringing the first carbon-dioxide-rich stream into contact with a second lean absorbent solution stream, delivering a second carbon-dioxide-rich stream and a second rich absorbent solution stream, the molar concentration of carbon dioxide in the second carbon-dioxide-rich stream being greater than the molar concentration of carbon dioxide in the first carbon-dioxide-rich stream.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: September 2, 2014
    Assignee: Total S.A.
    Inventors: Claire Weiss, Renaud Cadours, Kamal Bouzalmata
  • Patent number: 8814989
    Abstract: A process for removing carbon dioxide (CO2) by means of an absorption medium from a cycle gas system, wherein the CO2 occurs within a process in which, in the gas phase, ethylene is oxidized by oxygen (O2) to ethylene oxide (EO) in the presence of a catalyst, in which, as by product, CO2 is generated, by using as absorption medium an aqueous solution of one or more amines, wherein, for further purification of the cycle gas stream obtained downstream of the CO2 absorption step, this cycle gas stream is brought into intimate contact with water to which no mineral acid and no higher glycol was added.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: August 26, 2014
    Assignee: BASF SE
    Inventors: Robin Thiele, Gerhard Theis
  • Patent number: 8808430
    Abstract: The present invention relates to a process for purifying a gas mixture comprising dinitrogen monoxide, at least comprising the treatment of a gas mixture G-0 comprising dinitrogen monoxide to obtain a gas mixture G-A, at least comprising the absorption of the gas mixture G-0 in a solvent mixture S-I to obtain an offgas stream and a composition C-A, and the desorption of a gas mixture G-1 from the composition C-A to obtain a solvent mixture S-I?, subsequent condensation of the gas mixture G-A to obtain a liquid composition C-1 comprising dinitrogen monoxide and a gaseous mixture G-K, wherein the gaseous mixture G-K is recycled into the process.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: August 19, 2014
    Assignee: BASF SE
    Inventors: Beatrice Röβler-Feigel, Joaquim Henrique Teles, Dieter Baumann
  • Patent number: 8790453
    Abstract: The present invention relates to a gas purification system for removal of acidic gases from a gas stream. The system comprises an absorption unit arranged for receiving a gas stream and contacting it with a wash solution stream and a cooling unit in fluid communication with the absorption unit. The cooling unit receives wash solution enriched with acidic gases from a first withdrawal level of said absorption unit, cools the enriched wash solution, and provides cooled, enriched wash solution to a first reintroduction level of the absorption unit upstream of the withdrawal level. The ratio of withdrawn wash solution is 10-90% of the total wash solution stream.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: July 29, 2014
    Assignees: Alstom Technology Ltd, Dow Global Technologies LLC
    Inventors: Barath Baburao, Craig Norman Schubert
  • Publication number: 20140190350
    Abstract: The invention relates to a method and to a device for physical gas scrubbing, wherein a feed gas (1) containing hydrogen, carbon monoxide, carbon dioxide and also carbonyl sulphide and/or hydrogen sulphide is conducted through a first scrubbing section (W1) in countercurrent to a scrubbing medium preloaded with carbon dioxide, in order to separate sulphur components substantially selectively off from the feed gas and to generate a desulphurized gas mixture (3). In a second scrubbing section, carbon dioxide is separated off from only a subquantity of the desulphurized gas mixture by scrubbing with an unloaded scrubbing medium (4) and the resultant carbon dioxide-preloaded scrubbing medium is used completely in the first scrubbing section (W1) as scrubbing medium.
    Type: Application
    Filed: June 14, 2012
    Publication date: July 10, 2014
    Applicant: LINDE AKTIENGESELLSCHAFT
    Inventors: Horst Weiss, Alexander Brandl
  • Patent number: 8764892
    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: February 25, 2013
    Date of Patent: July 1, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Peter Ulrich Koss, Frederic Zenon Kozak
  • Patent number: 8764883
    Abstract: Apparatus and processes for saturating and purifying syngas are provided. In one or more embodiments, the apparatus can include two packed beds through which water and syngas flow countercurrently. In the first bed, the syngas can be at least partially saturated with water, and in the second bed hydrocarbons, byproducts, or both can be removed from the syngas. Processes for saturating and purifying syngas using the apparatus discussed and described herein are also provided.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: July 1, 2014
    Assignee: Kellogg Brown & Root LLC
    Inventor: Kenneth L. Blanchard
  • Patent number: 8728210
    Abstract: An exhaust gas treatment apparatus comprises an ammonia absorption system and an ammonia conversion system. The ammonia absorption receives ammonia-containing tail gas generated by a semiconductor process, and removes dust from the tail gas, absorbs and decomposes ammonia gas from the tail gas, converts the ammonia gas into aqueous ammonia, and emits the tail gas without the dust and the ammonia to an external environment. The ammonia conversion system receives the ammonia solution from the ammonia absorption system, and converts it into gaseous ammonia, and then converts the gaseous ammonia to produce liquid ammonia by vaporization and cooling-pressurized liquefaction. After that, the liquid ammonia is purified by a purification system to formed hi-purity liquid ammonia.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: May 20, 2014
    Inventor: Hsueh Yuan Lee
  • Patent number: 8715397
    Abstract: A CO2 amine scrubbing process uses an absorbent mixture combination of an amine CO2 sorbent in combination with a non-nucleophilic, relatively stronger, typically nitrogenous, base. The weaker base(s) are nucleophilic and have the ability to react directly with the CO2 in the gas stream while the relatively stronger bases act as non-nucleophilic promoters for the reaction between the CO2 and the weaker base. The sorption and desorption temperatures can be varied by selection of the amine/base combination, permitting effective sorption temperatures of 70 to 90° C., favorable to scrubbing flue gas.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 6, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Pavel Kortunov, Lisa S. Baugh, David C. Calabro, Michael Siskin, Preeti Kamakoti, Quanchang Li
  • Patent number: 8696791
    Abstract: Methods for removing sulfur from a gas stream prior to sending the gas stream to a gas separation membrane system are provided. Two schemes are available. When the sulfur content is high or flow is relatively high, a scheme including two columns where one tower is regenerated if the sulfur concentration exceeds a preset value can be used. When the sulfur content is low or flow is relatively low, a scheme including one column and an absorption bed.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: April 15, 2014
    Assignee: Saudi Arabian Oil Company
    Inventors: Milind M. Vaidya, Jean-Pierre R. Ballaguet, Sebastien A. Duval, Anwar H. Khawajah
  • Patent number: 8679232
    Abstract: A rotating packed bed RPB that includes a first and second packed bed both arranged on the same rotatable shaft. A gas is directed via a gas inlet through the first packed bed in co-current flow with a liquid in a radially outward direction towards the outer radius of the packed bed. The liquid enters the first packed bed via a first liquid inlet. The gas exiting the first packed bed is directed to the second packed bed and forced through it in a radially inward direction in counter-current flow with a liquid, which enters through a second liquid inlet. The arrangement allows an operation of the rotating packed bed with less energy compared to RPBs of the prior art operating in counter-current flow only. The apparatus allows low-cost design and high design flexibility.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: March 25, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Hartwig Wolf, Petar Aleksic, Frank Klaus Ennenbach, Mark Harvey Tothill
  • Patent number: 8597412
    Abstract: A CO2 recovery apparatus according to the present invention includes: an absorber (1003) that brings CO2-containing flue gas (1001A) into counter-current contact with CO2 absorbent (1002) to reduce CO2, and a regenerator (1005) that regenerates rich solution (1004) that has absorbed CO2, in which lean solution (1006) having CO2 reduced in the regenerator (1005) is reused in the absorber (1003). The absorber (1003) further includes a CO2 absorbing unit (1010) that recovers CO2 contained in the flue gas (1001A), and the CO2 absorbent (1002) that has absorbed CO2 is extracted from a rich side of the CO2 absorbing unit (1010) to exterior, cooled, and then supplied to a position nearer to a lean side of the absorber (1003) with respect to the position at which the CO2 absorbent (1002) is extracted.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: December 3, 2013
    Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Ltd.
    Inventors: Hiroshi Tanaka, Toru Takashina, Tsuyoshi Oishi, Masaki Iijima, Tomio Mimura, Kouki Ogura, Yasuyuki Yagi
  • Patent number: 8591626
    Abstract: The invention relates to a method as well as a device for separation of a carbon-dioxide-containing gas mixture (1), whereby carbon dioxide is separated from the carbon-dioxide-containing gas mixture (1) by physical gas washing (W1) and is converted into two product streams (3, 4) that consist primarily of carbon dioxide and have different pressures, and in the event of an operational breakdown, after their pressures are balanced, the product streams are subjected to an after-treatment step (W2) and then are released into the atmosphere. For balancing the pressures of the two carbon dioxide product streams (3, 4), the carbon dioxide stream (3, 7) that has the lower pressure is compressed by a gas jet ventilator (G), whereby the carbon dioxide stream (4) that has the higher pressure is used as a pumping medium (6).
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: November 26, 2013
    Assignee: Linde Aktiengesellschaft
    Inventor: Alexander Brandl
  • Publication number: 20130291724
    Abstract: An absorption column 1 for separating CO2 and a second acid gas from a gas stream, the column comprising a first and second section (4, 5) for the absorption of CO2 and the second acid gas; a solvent inlet in the second section for the addition of liquid stream 3 including an absorbent liquid for CO2 and the second acid gas; a gas inlet (21) in the first section for the addition of a gas stream (2) containing CO2 and the second acid gas; a gas outlet (15) in the second section of the column; a first solvent outlet (22) for the removal of at least a portion of the solvent (6) from the second section of the column and a second solvent outlet (23) for solvent stream (11) from the first section of the column; and a liquid flow distributor arrangement (8) to allow a portion of the solvent to flow from the second section of the column to the first section. A method of operating the apparatus and method of solvent extraction is also disclosed.
    Type: Application
    Filed: January 18, 2012
    Publication date: November 7, 2013
    Inventors: Erik Everhardus Bernardus Meuleman, Graeme Puxty, Paul Feron
  • Patent number: 8562719
    Abstract: A gas purification system including a hydrogen sulfide (H2S) absorber, a carbon dioxide (CO2) absorber, a flash tank, and a H2S concentrator. The gas purification system may also include a gas path though the H2S absorber prior to the CO2 absorber, a first solvent path sequentially through the CO2 absorber, the H2S absorber, and the H2S concentrator, and a second solvent path sequentially through the CO2 absorber, the flash tank, and the H2S concentrator, wherein the first and second solvent paths flow a common solvent.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: October 22, 2013
    Assignee: General Electric Company
    Inventors: Anindra Mazumdar, Judith Pauline Oppenheim
  • Patent number: 8540803
    Abstract: A method and apparatus for drying a natural gas or an industrial gas that contains acidic gas components, wherein gas drying is followed by the removal of the acidic gas components from the dried gas. The same physical solvent is used for both of the process steps of gas drying and of acidic gas removal. The gas to be dried is brought into contact with the physical solvent, which absorbs most of the water contained in the gas. The physical solvent, loaded with water, is transferred into a solvent regenerating device to be heated where the water contained in the solvent is stripped from the solvent in the countercurrent by acidic gas that is removed from the dried useful gas during the acidic gas absorption. The acidic gas being released again in the acidic gas solvent regenerating device, stripped from the solvent, and discharged from the solvent regenerating device.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: September 24, 2013
    Assignee: ThyssenKrupp Uhde GmbH
    Inventor: Johannes Menzel
  • Patent number: 8540811
    Abstract: A scrubber for the cleaning of gases containing several scrubber stages (1-4), where the scrubber stages are arranged in a scrubber tower with the different stages at different levels above each other in the scrubber tower. At least one of the scrubber stages (2-4) above the lowest scrubber stage (1) comprises, according to the invention, a ring-shaped tank (10, 15, 20) arranged inside the scrubber tower, which ring shaped tank (10, 15, 20) is arranged surrounding a central channel (9, 14, 19) through which the gas that is to be cleaned can pass upwards.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: September 24, 2013
    Assignee: Gotaverken Miljo AB
    Inventors: Ulf Hagg, Lennart Gustafsson
  • Patent number: 8518156
    Abstract: A process and system (100) for removing contaminants from a solution to regenerate the solution within the system. The process includes providing a solution (165) from a wash vessel (160) to a stripping column (181), the solution (165) including contaminants removed from a flue gas stream (150) present in the wash vessel (160) and contacting the solution with steam (185) inside the stripping column (181) thereby removing the contaminants from the solution and regenerating the solution. The stripping column (181) is operated at a pressure less than about 700 kilopascal.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: August 27, 2013
    Assignee: ALSTOM Technology Ltd
    Inventors: Frederic Z. Kozak, Arlyn V. Petig, Ritesh Agarwal, Rameshwar S. Hiwale
  • 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: 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: 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
  • 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: 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: 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: 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: 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: 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
  • Publication number: 20130042759
    Abstract: The present invention relates to a gas cleaning system for cleaning a gas stream containing carbon dioxide and sulfur dioxide, said gas cleaning system comprising: a pre-conditioning section (3); a CO2 removal stage (5); and a post-conditioning section (4); said pre-conditioning section comprising at least two gas-liquid contacting devices (19,20) arranged upstream of the CO2 removal stage (5) with respect to the flow direction of the gas; and said post-conditioning section comprising at least two gas-liquid contacting devices (30,31) arranged downstream of the CO2 removal stage with respect to the flow direction of the gas.
    Type: Application
    Filed: November 11, 2010
    Publication date: February 21, 2013
    Inventor: Peter Ulrich Koss
  • Patent number: 8357230
    Abstract: The invention relates to a process for purifying crude synthesis gas (1) containing metal carbonyls, in which undesirable substances such as sulphur components and/or carbon dioxide (CO2) and/or hydrocyanic acid (HCN) are scrubbed out by scrubbing with a physically acting scrubbing medium in at least one process step (main scrub (H)), and also an apparatus for carrying out the process. The crude synthesis gas (1) before introduction into the main scrub (H) is subjected to a gas scrub (carbonyl scrub (C)) in which a partial amount (4) of the laden scrubbing medium (2) taken off from the main scrub is used as scrubbing medium, with the partial amount (4) being chosen so that the metal carbonyls are (selectively) separated off from the crude synthesis gas (1) in the carbonyl scrub (C) largely independently of the other gas components.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: January 22, 2013
    Assignee: Linde Aktiengesellschaft
    Inventor: Ulvi Kerestecioglu