Cooling Before Liquid Contacting Patents (Class 95/229)
  • Patent number: 10493395
    Abstract: The invention relates to an apparatus and to a method for separating condensable materials from an exhaust air stream. Known apparatuses of this type typically comprise a flow duct for the correspondingly contaminated exhaust air, wherein a first separator (114) and a second separator are connected in series in the flow duct (110). A fan is typically connected downstream of the two separators and operates as a suction fan in order to draw the exhaust air through said separators and to discharge the exhaust air to the environment after it has passed through both separators. In a rolling mill, order to observe predefined limit values for the proportion of condensable materials in exhaust air streams before such streams are discharged into the ambient air, the present invention provides for the exhaust air to be separated at the rolling mill itself, and, downstream, for the fan to be placed not at the outlet of the separators but upstream of the first separator.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: December 3, 2019
    Assignee: SMS Group GmbH
    Inventors: Ulrich Wiegard, Judith Ahrens
  • Patent number: 8801836
    Abstract: The present invention relates to a method for recovery of carbon dioxide from a gas (G3), in particular the present invention relates to a method for recovery of carbon dioxide using a process gas (G1) heated reboiler (A1) for carbon dioxide removal in a stripper (A3).
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: August 12, 2014
    Assignee: Union Engineering A/S
    Inventor: Rasmus Find
  • Patent number: 8801832
    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: February 12, 2014
    Date of Patent: August 12, 2014
    Assignee: Saudi Arabian Oil Company
    Inventors: Milind M. Vaidya, Jean-Pierre R. Ballaguet, Sebastien A. Duval, Anwar H. Khawajah
  • Patent number: 8790452
    Abstract: A system adapted to separate a natural gas feed stream into a sweetened gas stream, at least one liquid waste stream and at least one gaseous waste stream, and to discharge, recover or destroy the at least one liquid waste stream and the at least one gaseous waste stream.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: July 29, 2014
    Inventor: Richard Paul Posa
  • Patent number: 8753440
    Abstract: The present embodiments are directed towards the cooling of a solvent of a gas treatment system using a fluid flow from an air separation unit. In one embodiment, a system is provided that includes an air separation unit. The air separation unit has an air inlet configured to receive an air flow, an oxygen outlet configured to output an oxygen flow, a nitrogen outlet configured to output a nitrogen flow and a cooling system configured to cool the air flow to enable separation of the air flow into the oxygen flow and the nitrogen flow, wherein the cooling system is configured to cool a first solvent of a first gas treatment system.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: June 17, 2014
    Assignee: General Electric Company
    Inventors: Fredric Samuel Russ, George Frederick Frey, Charles Martin Mitchell, Paul William Plummer
  • Publication number: 20140140914
    Abstract: A flue gas treatment process and system is presented. The system includes a fan capable of moving a flue gas through a flue gas desulfurizer, direct contact cooler, and CO2 absorber, without the need for a booster fan. The system also includes a direct contact cooler and CO2 absorber that are configured to withstand gas conditions present at the flue gas desulfurizer exit. When the direct contact cooler and CO2 absorber are shutdown, the speed of the fan is lowered and the flue gas continues to flow through the cooler and CO2 absorber and out a chimney. The overall cost of installing, operating, and maintaining the system is lower than that of conventional processes and systems.
    Type: Application
    Filed: May 11, 2012
    Publication date: May 22, 2014
    Inventors: Jonathan Priest, Bill Richardson, Dennis W. Johnson
  • Patent number: 8518148
    Abstract: A method and system for dehumidifying flue gas from a flue gas-generating process that supplies the flue gas to a wet flue gas processor. A wet cooling tower supplies water to a wet flue gas processor to condense water from the flue gas and form a liquid mixture in the wet flue gas processor.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: August 27, 2013
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventors: Dennis K. McDonald, Douglas J. DeVault, Paul J. Williams
  • Patent number: 8500893
    Abstract: This invention involves a marine ship flue gas scrubbing equipment and scrubbing method. The equipment includes a shell with an upper scrubbing section and a water tank in the lower section. A smoke pipe leads in exhaust gas to an area between the scrubbing section and water tank. Scrubbing seawater is injected through an inlet above the scrubbing section, and a cooler is located along the pathway of the exhaust gas. The method of scrubbing includes leading-in exhaust gas, cooling the exhaust gas, injecting scrubbing seawater, performing scrubbing operation, and discharging clean gas. Embodiments of the invention provide a highly efficient scrubbing equipment and method suitable for high-temperature exhaust gas within a limited usable space. The methods and equipment are highly effective for emission reduction, has low energy consumption, small size, and long life performance.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: August 6, 2013
    Inventor: Sigan Peng
  • Publication number: 20130125752
    Abstract: Systems and methods are contemplated for down-flow cooling of a feed gas. Contemplated systems can include a housing having an inlet conduit disposed within an upper portion and configured to receive a first stream. First and second stages can be disposed within the housing, with the first stage disposed upstream of the second stage and having a first cooling stream, and the second stage having a second cooling stream that is colder than the first cooling stream. The housing can be configured such that the first stream is cooled by down-flow heat exchange with the first and second cooling streams to produce a conditioned stream depleted of at least a portion of water condensed from the feed gas.
    Type: Application
    Filed: November 22, 2011
    Publication date: May 23, 2013
    Applicant: FLUOR TECHNOLOGIES CORPORATION
    Inventor: Dennis W. Johnson
  • Patent number: 8377403
    Abstract: Contemplated configurations and methods employ COS hydrolysis and a downstream H2S removal unit to produce a treated feed gas that is then further desulfurized in an absorber using two lean oil fluids. The so produced mercaptan enriched hydrocarbon fluid is fed to a distillation column that produces a light overhead vapor that is preferably combined with the treated feed gas and a sulfur rich bottom product that is in most cases preferably directly fed to a hydrocarbon processing unit comprising a hydrotreater. In further especially preferred aspects, the hydrocarbon processing unit produces at least one and more typically both of the two lean oil fluids, and the treated gas is optionally further processed to produce clean fuel gas in a hydrotreater for olefinic saturation and sulfur conversion using a lean oil recycle for reactor temperature control.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: February 19, 2013
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Patent number: 8308849
    Abstract: Ultra cleaning of combustion gas to near zero concentration of residual contaminants followed by the capture of CO2 is provided. The high removal efficiency of residual contaminants is accomplished by direct contact cooling and scrubbing of the gas with cold water. The temperature of the combustion gas is reduced to 0-20 degrees Celsius to achieve maximum condensation and gas cleaning effect. The CO2 is captured from the cooled and clean flue gas in a CO2 absorber utilizing an ammoniated solution or slurry in the NH3—CO2—H2O system. The absorber operates at 0-20 degrees Celsius. Regeneration is accomplished by elevating the pressure and temperature of the CO2-rich solution from the absorber. The CO2 vapor pressure is high and a pressurized CO2 stream, with low concentration of NH3 and water vapor is generated. The high pressure CO2 stream is cooled and washed to recover the ammonia and moisture from the gas.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: November 13, 2012
    Assignee: ALSTOM Technology Ltd
    Inventor: Eli Gal
  • Patent number: 8292989
    Abstract: A power generation plant (112), a method, and a CO2 capture system (122) for removing carbon dioxide (104) from a flue gas stream (106) are disclosed. As shown in FIG. 2, a CO2 capture system (122), comprises an absorber vessel (202), a water wash vessel (210), and a stripper (214). The CO2 capture system (122) can be configured to introduce both a lean ionic ammonia solution (204) from a regeneration system (124) and a flue gas stream (106) from a cooling system (120) and to provide a rich ionic ammonia solution (206) to a regeneration system (124), wherein the introduction of the lean ionic ammonia solution (204) to the flue gas stream (106) produces a flue gas substantially devoid CO2 (224). The water wash vessel (210) can be configured to receive the flue gas substantially devoid CO2 (224) and produce ammoniated water (212) by introducing water (218) to the flue gas substantially devoid CO2 (224).
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: October 23, 2012
    Assignee: ALSTOM Technology Ltd
    Inventors: Frederic Z. Kozak, Arlyn V. Petig, Vikram Shabde
  • Patent number: 8268050
    Abstract: An improved process for the separation of carbon dioxide from the flue gas of an oxy-combustion power plant is provided. The flue gas is compressed, cleaned, cooled and dried. This clean, compressed dry flue gas is then further cooled, partially condensed and separated into liquid and vapor streams. The liquid streams, which contain a high concentration of carbon dioxide, are vaporized, compressed and exported to an end user. The vapor streams are heated and expanded, in order to extract useable energy. At least two expanders are used to extract this energy, with an intermediate warming step.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: September 18, 2012
    Assignee: Air Liquide Process & Construction, Inc.
    Inventor: Bao Ha
  • Patent number: 8257476
    Abstract: A first contaminant selected from oxygen and carbon monoxide is removed from impure liquid carbon dioxide using a mass transfer separation column system which is reboiled by indirect heat exchange against crude carbon dioxide fluid, the impure liquid carbon dioxide having a greater concentration of carbon dioxide than the crude carbon dioxide fluid. The invention has particular application in the recovery of carbon dioxide from flue gas generated in an oxyfuel combustion process or waste gas from a hydrogen PSA process. Advantages include reducing the level of the first contaminant to not more than 1000 ppm.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: September 4, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Vincent White, Rodney John Allam
  • Patent number: 8236093
    Abstract: A method of reducing the concentration of pollutants in a combustion flue gas having a first temperature is provided. The method includes the step of providing an organic Rankine cycle apparatus utilizing a working fluid and including at least one heat exchanger is arranged in thermal communication with the flue gas. The method further includes the step of reducing the temperature of the flue gas to a second temperature less than the first temperature by vaporizing the working fluid within the heat exchanger utilizing thermal energy derived from the flue gas. The method further includes the step of filtering the flue gas through at least one filter disposed downstream of the heat exchanger to remove pollutants from the flue gas. An associated system configured to reduce the concentration of pollutants in the combustion flue gas is also provided.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: August 7, 2012
    Assignee: BHA Group, Inc.
    Inventors: Robert Warren Taylor, James Easel Roberts, Charles Michael Booth
  • Patent number: 8226748
    Abstract: A CO2 reducing system (10A) is constituted by a low-temperature CO2 reducing apparatus (11-1) that includes a low-temperature absorber (1006-1) that reduces at least one of CO2 and H2S by bringing flue gas (1002) including at least one of CO2 and H2S into contact with a low-temperature absorbing solution (1005-1), a low-temperature regenerator (1008-1) that regenerates a low-temperature rich solution (1007-1), a low-temperature rich-solution supply line (12-1) that feeds the low-temperature rich solution (1007-1) to the low-temperature regenerator (1008-1), and a low-temperature lean-solution supply line (13-1) that feeds a low-temperature lean solution (1009-1) to the low-temperature absorber (1006-1) from the low-temperature regenerator (1008-1); and a high-temperature CO2 reducing apparatus (11-2) that is arranged on a side at which the flue gas (1002) is discharged, and that has the same configuration as the low-temperature CO2 reducing apparatus (11-1).
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: July 24, 2012
    Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.
    Inventors: Yukihiko Inoue, Ryuji Yoshiyama, Tsuyoshi Oishi, Masaki Iijima, Masazumi Tanoura, Tomio Mimura, Kouki Ogura, Yasuyuki Yagi
  • Publication number: 20120180657
    Abstract: The present invention relates to a process for producing at least one CO2-lean gas and at least one CO2-rich fluid. In particular, it relates to a process for capturing dioxide in a fluid containing at least one compound more volatile than carbon dioxide such as, for example, methane CH4, oxygen O2, argon Ar, nitrogen N2, carbon monoxide CO, helium He and/or hydrogen H2.
    Type: Application
    Filed: September 2, 2010
    Publication date: July 19, 2012
    Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Christian Monereau, Claire Bourhy-Weber, Frederick Lockwood, Jean-Pierre Tranier, Marc Wagner
  • Patent number: 8216351
    Abstract: An Apparatus for purifying a feed stream containing carbon dioxide in which the feed stream, after having been compressed and dried, is partly cooled and then used to reboil a stripping column. Thereafter, the feed stream is further cooled and expanded to a lower operational temperature of the stripping column. A carbon dioxide product stream composed of the liquid column bottoms of the stripping column is expanded at one or more pressures to generate refrigeration, then fully vaporized within the main heat exchanger and compressed by a compressor to produce a compressed carbon dioxide product. Refrigeration is recovered in the main heat exchanger from a column overhead stream extracted from the stripping column within the main heat exchanger either directly or indirectly by auxiliary processing in which carbon dioxide is further separated and optionally recycled back to the main compressor used in compressing the feed stream.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: July 10, 2012
    Assignee: Praxair Technology
    Inventors: Minish Mahendra Shah, Henry Edward Howard
  • Publication number: 20120152120
    Abstract: The present invention provides a series of processing steps to remove carbon dioxide from synthesis gas. The syngas exiting a hydrogen sulfide absorber is first compressed, subjected to a dehydration step and a low temperature liquefaction and separation to remove carbon dioxide. The high pressure syngas then continues on to a carbon dioxide absorber for carbon dioxide removal. The system can operate with lower solvent rates and equipment sizes compared to prior art systems.
    Type: Application
    Filed: November 29, 2011
    Publication date: June 21, 2012
    Applicant: UOP LLC
    Inventors: Lamar A Davis, Nagaraju Palla, Ernest J. Boehm, JR.
  • Publication number: 20120055335
    Abstract: A drain liquid relief system for a subsea compressor is provided. The system includes a suction scrubber a drain storage tank for collecting drain liquid contaminating the compressor flow in the drain storage tank. The system further includes an intermittently pressurizing device and a suction line connected to the bottom of the drain storage tank. The suction scrubber is connected to the compressor suction nozzle and/or a compressor casing drain line, the suction scrubber being further connected, via a first check valve, to the drain storage tank for collecting the drain liquid in the drain storage tank. The intermittently pressurizing device is adapted to intermittently pressurize the drain storage tank to intermittently blow the drain liquid out of the drain storage tank through the suction line.
    Type: Application
    Filed: February 25, 2010
    Publication date: March 8, 2012
    Inventors: Gesinus Mateman, Wolfgang Zacharias
  • Patent number: 8118915
    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: February 21, 2012
    Inventor: Donald Leo Stinson
  • Patent number: 8038774
    Abstract: This invention involves ship flue gas desulphurization method and system. It employs seawater to reduce SO2 and other pollutant discharged by ship. The method includes seawater scrub, acidic seawater transfer, deacidification, and discharge processes. The system includes a scrubber and a water-saving deacidification device. Upper portion of the scrubber comprises a scrubbing section which is connected with scrubbing seawater pump by pipelines. Lower portion of the scrubber comprises a cooling section. One end of the scrubber links the ship engine smoke pipe by a scrubbing inlet pipe, and the other end links the scrubber to a scrubbing outlet pipe. The water-saving deacidification device lies below the scrubber and is connected with it. The water-saving deacidification device is coupled to a blending seawater pump, fan, and total drain pipe for discharging seawater after deacidification. This invention provides high desulphurization efficiency, and requires small seawater quantity.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: October 18, 2011
    Inventor: Sigan Peng
  • Patent number: 8007571
    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: August 30, 2011
    Inventor: Donald Leo Stinson
  • Patent number: 7993615
    Abstract: A method and system for dehumidifying flue gas from a flue gas generating. Water is supplied from a cooling tower to a heat exchanger in the liquid in the lower end of a wet flue gas processor for cooling the liquid in the lower end of the wet flue gas processor to condense water from the flue gas into the liquid in the wet flue gas processor. Returning water from the heat exchanger to the cooling tower cools the water and the liquid with the condensed water is supplied from the wet flue gas processor to the cooling tower as make-up water for the cooling tower to reduce or eliminate the need for fresh make-up water.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: August 9, 2011
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventors: Dennis K. McDonald, Douglas J. Devault, Vladimir Vaysman
  • Patent number: 7942951
    Abstract: A low-maintenance scrubber inlet device is provided for delivering effluent gases to gas scrubbers. The scrubber inlet device may comprise an interior volume configured to receive effluent gases and direct the effluent gases into the scrubber while maintaining the temperature of the effluent gases. In some instances, a heated gas is introduced to maintain the effluent gas temperature. The scrubber interface device is configured to deliver the effluent gas stream from the inlet manifold to the gas scrubbing system, and to have a very low susceptibility to clogging.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: May 17, 2011
    Assignee: Airgard, Inc.
    Inventors: Mark Johnsgard, Kris Johnsgard
  • Patent number: 7883569
    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: February 12, 2007
    Date of Patent: February 8, 2011
    Inventor: Donald Leo Stinson
  • Patent number: 7867322
    Abstract: A gas cleaning system, which is operative for cleaning a process gas containing carbon dioxide and sulphur dioxide, comprises a combined cooling and cleaning system (16), and a CO2-absorber. The combined cooling and cleaning system (16) comprises a first gas-liquid contacting device (50) located upstream of the CO2-absorber and operative for cooling the process gas by means of a cooling liquid, and for absorbing into the cooling liquid sulphur dioxide of the process gas, such that a cooling liquid containing sulphate is obtained. The combined cooling and cleaning system (16) further comprises a second gas-liquid contacting device (94) located downstream of the CO2-absorber and operative for removing ammonia from the process gas, which has been treated in the CO2-absorber, by means of bringing the process gas containing ammonia into contact with the cooling liquid containing sulphate.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: January 11, 2011
    Assignee: ALSTOM Technology Ltd
    Inventor: Eli Gal
  • Patent number: 7850761
    Abstract: There is provided an apparatus for highly purifying nitric oxide by removing impurities included in nitric oxide, which comprises: a number of dehumidifiers connected to one another in a series, to remove water and carbon dioxide from the nitric oxide; a vaporizing and liquefying unit for respectively separating impurities into a gaseous state and a liquid state by cooling the nitric oxide which passed through the dehumidifiers at sub-zero temperatures; a storage tank for storing highly purified nitric oxide separated by the vaporizing and liquefying unit; an exhaust pump for discharging gaseous impurities, separated by the vaporizing and liquefying unit, to a scrubber; an outlet for discharging liquid impurities, separated by the vaporizing and liquefying unit, to the scrubber; and the scrubber 50 for purifying the gaseous and liquid impurities.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: December 14, 2010
    Assignee: Wonikmurtrealize Co., Ltd.
    Inventors: Jun-Youl Lee, Bong-Soo Seo
  • Patent number: 7846240
    Abstract: A method and system for reducing an amount of ammonia in a flue gas stream. The system 100 includes: a wash vessel 180 for receiving an ammonia-containing flue gas stream 170, the wash vessel 180 including a first absorption stage 181a and a second absorption stage 181b, each of the first absorption stage 181a and the second absorption stage 181b having a mass transfer device 184; and a liquid 187 introduced to the wash vessel 180, the liquid 187 for absorbing ammonia from the ammonia-containing flue gas stream 170 thereby forming an ammonia-rich liquid 192 and a reduced ammonia containing flue gas stream 190 exiting the wash vessel 180.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: December 7, 2010
    Assignee: ALSTOM Technology Ltd
    Inventors: Eli Gal, Indira Jayaweera
  • Patent number: 7819951
    Abstract: A first contaminant selected from oxygen and carbon monoxide is removed from impure liquid carbon dioxide using a mass transfer separation column system which is reboiled by indirect heat exchange against crude carbon dioxide fluid, the impure liquid carbon dioxide having a greater concentration of carbon dioxide than the crude carbon dioxide fluid. The invention has particular application in the recovery of carbon dioxide from flue gas generated in an oxyfuel combustion process or waste gas from a hydrogen PSA process. Advantages include reducing the level of the first contaminant to not more than 1000 ppm.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: October 26, 2010
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Vincent White, Rodney John Allam
  • Patent number: 7819950
    Abstract: A subsea compression system and method wherein a wellstream fluid is flowed through a flow line (12) from a reservoir (10) and into a separation vessel (16) for subsequent compression in a compressor (18; 18?, 18?) prior to export of gas. A recycle line (24; 24?, 24?) is fluidly connected at a first end to the compressed wellstream at the outlet side of the compressor (18; 18?, 18?) and at a second end to the wellstream at a location between the separation vessel (16) and the inlet side of the compressor (18; 18?, 18?), the recycle line being capable of controllably (32) feeding fluid due to surge back to the compressor inlet side and avoiding the need to feed the fluid into the separation vessel, because the re-circulated gas is dry both due to having been separated at seawater temperature, and then being heated during recirculation.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: October 26, 2010
    Assignee: Kvaerner Oilfield Products A.S.
    Inventors: Kjell Olav Stinessen, Håkon Skofteland
  • Patent number: 7806965
    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: October 5, 2010
    Inventor: Donald Leo Stinson
  • Patent number: 7771514
    Abstract: A low-maintenance scrubber inlet device is provided for delivering effluent gases to gas scrubbers. The scrubber inlet device comprises a scrubber interface device in fluid communication with an inlet manifold. The inlet manifold is configured to receive effluent gases and direct the effluent gases into the scrubber interface device while maintaining the temperature of the effluent gases. In some instances, a heated gas is introduced into the inlet manifold to maintain the effluent gas temperature. The scrubber interface device is configured to deliver the effluent gas stream from the inlet manifold to the gas scrubbing system, and to have a very low susceptibility to clogging.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: August 10, 2010
    Assignee: Airgard, Inc.
    Inventors: Mark Johnsgard, Kris Johnsgard
  • Publication number: 20100126349
    Abstract: Systems, apparatus and methods are provided involving a reduced-temperature wet scrubbing system adapted to scrub effluent gases within an abatement system. The reduced-temperature wet scrubbing system may include a wet scrubber adapted to be operated within a range of reduced temperatures and a cooling system adapted to maintain the wet scrubber within the range of reduced temperatures, which is below 23° C. The cooling system may include a coolant, preferably chilled water, adapted to cool the wet scrubber. The wet scrubbing system further may include an indication device, such as a temperature sensor, to indicate whether the wet scrubber is within the temperatures range. A controller in communication with the indication device may be provided to control the cooling system. In addition, the wet scrubbing system may include baffles and nozzles spraying chilled mist along a path of the effluent gas between an abatement tool and the wet scrubber.
    Type: Application
    Filed: November 26, 2008
    Publication date: May 27, 2010
    Applicant: Applied Materials, Inc.
    Inventor: Robbert M. Vermeulen
  • Patent number: 7666251
    Abstract: Method of purifying a feed stream containing carbon dioxide wherein the feed stream after having been compressed and dried is partly cooled and then used to reboil a stripping column. Thereafter, the feed stream is further cooled and expanded to a lower operational temperature of the stripping column. A carbon dioxide product stream composed of the liquid column bottoms of the stripping column is expanded at one or more pressures to generate refrigeration, then fully vaporized within the main heat exchanger and compressed by a compressor to produce a compressed carbon dioxide product. Refrigeration is recovered in the main heat exchanger from a column overhead stream extracted from the stripping column within the main heat exchanger either directly or indirectly by auxiliary processing in which carbon dioxide is further separated and optionally recycled back to the main compressor used in compressing the feed stream.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: February 23, 2010
    Assignee: Praxair Technology, Inc.
    Inventors: Minish Mahendra Shah, Henry Edward Howard
  • Patent number: 7641717
    Abstract: Ultra cleaning of combustion gas to near zero concentration of residual contaminants followed by the capture of CO2 is provided. The high removal efficiency of residual contaminants is accomplished by direct contact cooling and scrubbing of the gas with cold water. The temperature of the combustion gas is reduced to 0-20 degrees Celsius to achieve maximum condensation and gas cleaning effect. The CO2 is captured from the cooled and clean flue gas in a CO2 absorber (134) utilizing an ammoniated solution or slurry in the NH3—CO2H2O system. The absorber operates at 0-20 degrees Celsius. Regeneration is accomplished by elevating the pressure and temperature of the CO2-rich solution from the absorber. The CO2 vapor pressure is high and a pressurized CO2 stream, with low concentration of NH3 and water vapor is generated. The high pressure CO2 stream is cooled and washed to recover the ammonia and moisture from the gas.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: January 5, 2010
    Assignee: EIG, Inc.
    Inventor: Eli Gal
  • Patent number: 7601208
    Abstract: A water production unit is provided that uses liquid desiccant and vehicle exhaust for extracting water from air.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: October 13, 2009
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Stephen Tongue
  • Patent number: 7597746
    Abstract: A gas (1) comprising hydrogen sulfide, carbon dioxide, and hydrocarbon contaminants is treated in a plant (FIG. 2) in a configuration in which waste streams are recycled to extinction. In especially preferred aspects of contemplated methods and configurations, hydrogen sulfide and other sulfurous components are converted to a sulfur product (37), carbon dioxide (44A) is separated at a purity sufficient for enhanced oil recovery or sale, and hydrocarbon contaminants are purified to a marketable hydrocarbon product (49).
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: October 6, 2009
    Assignee: Fluor Technologies Corporation
    Inventors: John Mak, Curt Graham
  • Patent number: 7163571
    Abstract: An exhaust gas cooling and particulate scrubbing system for automobiles includes a first stage intercooler for initial, indirect cooling of the exhaust gas and a direct exhaust gas cooling and scrubbing device preferably positioned downstream in the exhaust system therefrom. The intercooler is designed to provide circulation of a liquid cooling medium by convection and has airflow ducts positioned within a surrounding jacket oriented to permit air to move therethrough during movement of the automobile. The a direct exhaust gas cooling and scrubbing device passes the exhaust gas through a liquid cooling medium whereby the exhaust gas is cooled in an effort to trap suspended particulates in the liquid cooling medium.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: January 16, 2007
    Inventor: Ying Gang Ruan
  • Patent number: 7105039
    Abstract: A method and apparatus is provided of adding ozone and ozone and oxygen and ozone and another oxidizer such as chlorine dioxide or an acidifying agent to contaminated environments including high pressure work sites such as wells and sewage pipes and into high temperature solutions such as scrubber water. An apparatus is provided for on-site generation of oxygen and the generation of high pressure oxygen for use in contaminant remediation.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: September 12, 2006
    Inventor: Scott Decker
  • Patent number: 7097691
    Abstract: Method for producing pigment nano-particles may include vaporizing a pigment precursor material; drawing the vaporized pigment precursor material into a precipitation conduit; contacting the vapor in the precipitation conduit with a collection fluid at a first location within the precipitation conduit, the contacting cooling the vapor and precipitating pigment nano-particles, the contacting occurring in the absence of a temperature change in the vapor at locations within the precipitation conduit that are upstream of the first location; and collecting the pigment nano-particles in a collection fluid.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: August 29, 2006
    Assignee: Cyprus Amax Minerals Company
    Inventors: Joel A. Taube, Larry G. Putman, Loyal M. Johnson, Jr.
  • Patent number: 7041156
    Abstract: Process for removing natural gas liquids from a gaseous natural gas stream at elevated pressure to obtain a gaseous product stream having a reduced content of natural gas liquids is provided.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: May 9, 2006
    Assignee: Shell Oil Company
    Inventors: Eduard Coenraad Bras, Paramasivam Senthil Kumar
  • Patent number: 7029589
    Abstract: A method or process of treating a contaminated fluid (10) having at least one contaminant having a property selected from the group consisting of being volatile, hazardous, tacky and a combination thereof is provided. The method comprises contacting the contaminated fluid with an effective amount of an agent (12) selected from oxidizing agents, free radical producing agents and a combination thereof for an effective amount of time to convert a substantial amount of the at least one contaminant to at least one corresponding modified contaminant having a property selected from the group consisting of being non-volatile, less volatile than the converted contaminant non-hazardous, less hazardous than the converted contaminant, non-tacky and a combination thereof; and generating a treated fluid (14) having a level of the at least one contaminant and of the at least one corresponding modified contaminant to allow the treated fluid to at least meet requirements for release, reuse or further treatment.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: April 18, 2006
    Inventor: Michael P. McGinness
  • Patent number: 6849105
    Abstract: Prior to passing through pumping apparatus effluent gas containing hydrocarbons is subjected to washing by being sprayed with aromatic type oil in oil-recirculating washing apparatus. Polycyclic aromatic hydrocarbons contained in the effluent gas are trapped by being absorbed in the oil. The method is suitable for treating effluent gas coming from an installation for chemical vapor deposition or infiltration using a reagent gas containing a precursor for pyrolytic carbon, or else coming from a cementation installation.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: February 1, 2005
    Assignee: Snecma Propulsion Solide
    Inventors: Yvan Baudry, Jean-Pierre Lambert, Bernard Delperier, Jean-François Potin
  • Publication number: 20040200353
    Abstract: Process for removing natural gas liquids from a gaseous natural gas stream at elevated pressure to obtain a gaseous product stream having a reduced content of natural gas liquids is provided.
    Type: Application
    Filed: February 9, 2004
    Publication date: October 14, 2004
    Inventors: Eduard Coenraad Bras, Paramasivam Senthil Kumar
  • Patent number: 6800115
    Abstract: A device for treatment of a gas stream includes one or more entities (3) having functional elements (10, 20, 110, 200, 230, 310, 320, 330, 400) that are attached to, and able to rotate with, a hollow axle (4). The device also includes one or more pipes (5) mounted axially inside the hollow axle for transportation of necessary auxiliary fluids to effect the gas treatment.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: October 5, 2004
    Assignee: Norsk Hydro ASA
    Inventor: Dag Arne Eimer
  • Publication number: 20040187686
    Abstract: A process for removing contaminants from a natural gas feed stream including water and sour species is provided, which process comprises the steps of cooling the natural gas feed stream in a first vessel (12) to a first operating temperature at which hydrates are formed and removing from the first vessel (12) a stream of dehydrated gas (34); and cooling the dehydrated gas in a second vessel (14) to a second operating temperature at which solids of the sour species are formed or at which the sour species dissolve in a liquid and removing from the second vessel (14) a stream of dehydrated sweetened gas (62).
    Type: Application
    Filed: February 5, 2004
    Publication date: September 30, 2004
    Inventors: Robert Amin, Casper Krijno Groothuis
  • Patent number: 6793712
    Abstract: A pretreatment system for natural gas liquefaction employing heat integration for more efficient and effective natural gas temperature control. The pretreatment system expands the natural gas prior to acid gas removal. After acid gas removal, the natural gas is cooled by indirect heat exchange with the expanded natural gas located upstream of the acid gas removal system.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: September 21, 2004
    Assignee: ConocoPhillips Company
    Inventor: Wesley R. Qualls
  • Patent number: 6746516
    Abstract: An air treatment system including an exhaust including an exhaust annulus defined by an inner exhaust wall, an outer exhaust wall circumscribing the inner wall, and a pressurized annulus between the inner and outer walls, and at least one condenser suspended within the exhaust annulus, where the at least one condenser includes a cooling fluid therein.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: June 8, 2004
    Inventor: James A. Titmas
  • Publication number: 20030140786
    Abstract: An exhaust heat utilization method for a carbon dioxide recovery process comprises heating returning hot water by at least one heat exchange selected from heat exchange with the regenerated absorbing liquid after heat exchange, heat exchange with carbon dioxide exhausted from the regeneration tower, and heat exchange with saturated water after heating the bottom of the regeneration tower, thereby obtaining hot water.
    Type: Application
    Filed: December 17, 2002
    Publication date: July 31, 2003
    Inventor: Masaki Iijima