Distillation Patents (Class 62/620)
  • Patent number: 10480354
    Abstract: Certain aspects of natural gas liquid fractionation plant waste heat conversion to simultaneous power and potable water using Kalina Cycle and modified multi-effect-distillation system can be implemented as a system. The system includes a waste heat recovery heat exchanger network coupled to multiple heat sources of a Natural Gas Liquid (NGL) fractionation plant. The heat exchanger network is configured to transfer at least a portion of heat generated at the multiple heat sources to a first buffer fluid and a second buffer fluid flowed through the first heat exchanger network. The system includes a first sub-system configured to generate power. The first sub-system is thermally coupled to the waste heat recovery heat exchanger. The system includes a second sub-system configured to generate potable water from brackish water. The second sub-system is thermally coupled to the waste heat recovery heat exchanger.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: November 19, 2019
    Assignee: Saudi Arabian Oil Company
    Inventors: Mahmoud Bahy Mahmoud Noureldin, Akram Hamed Mohamed Kamel
  • Patent number: 10267457
    Abstract: An apparatus, system and method for capture, utilization and sendout of latent heat in boil off gas (“BOG”) onboard a cryogenic storage vessel is described. A liquefied gas vessel comprises a cryogenic cargo tank onboard a liquefied gas vessel, the cargo tank comprising a liquefied gas and a BOG, a latent heat exchanger fluidly coupled to a stream of the liquefied gas and a stream of the BOG, wherein the latent heat exchanger transfers a heat between the BOG stream and the liquefied gas stream to produce a condensed BOG, means for combining the condensed BOG and the liquefied gas stream to obtain a combined stream, the means for combining the condensed BOG and the liquefied gas stream fluidly coupled to the latent heat exchanger, and a liquefied gas regasifier onboard the vessel and fluidly coupled to the combined stream, wherein the liquefied gas regasifier regasifies the combined stream.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: April 23, 2019
    Assignee: Excelerate Energy Limited Partnership
    Inventors: Kenneth D. Nelson, Graeme David Trotter, Alan B. Nierenberg, Kenneth Hugh McGeachie
  • Patent number: 10227273
    Abstract: A process and an apparatus are disclosed for a compact processing assembly to remove C5 and heavier hydrocarbon components from a hydrocarbon gas stream. The hydrocarbon gas stream is expanded to lower pressure and supplied to the processing assembly between an absorbing means and a mass transfer means. A distillation vapor stream is collected from the upper region of the absorbing means and cooled in a first heat and mass transfer means inside the processing assembly to partially condense it, forming a residual vapor stream and a condensed stream. The condensed stream is supplied to the absorbing means at its top feed point. A distillation liquid stream is collected from the lower region of the mass transfer means and directed into a second heat and mass transfer means inside the processing assembly to heat it and strip out its volatile components.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: March 12, 2019
    Assignees: Ortloff Engineers, Ltd., S.M.E. Products, LP
    Inventors: Scott A. Miller, John D. Wilkinson, Joe T. Lynch, Hank M. Hudson, Kyle T. Cuellar, Andrew F. Johnke, W. Larry Lewis
  • Patent number: 10132562
    Abstract: In a process for the cryogenic separation of a methane-rich feed stream containing between 3 and 35% of oxygen and also nitrogen, the feed stream is cooled in order to produce a cooled stream, at least one portion of the cooled stream is sent to a distillation column, a bottom stream is withdrawn from the distillation column, the bottom stream being enriched in methane compared to the feed stream, a stream enriched in oxygen compared to the feed stream is withdrawn from the distillation column, and a nitrogen-rich stream is sent to the column.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: November 20, 2018
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventor: Golo Zick
  • Patent number: 10099168
    Abstract: Water-saturated desiccant in a dehydration unit, having previously been used to dehydrate natural gas, is regenerated in a closed loop process using liquid petroleum gas (LPG). LPG is pumped from a storage tank, vaporized and superheated. The superheated LPG gas enters the dehydration unit such that the hot gas passes over the desiccant thereby regenerating the desiccant. An overhead stream from the dehydration unit passes to a condenser where the temperature of the hot gas from the dehydration unit is dropped to form a fluid stream containing LPG, water and non-condensable gases. The fluid stream passes to a three phase separator for separating the fluid stream into a gas stream, a water stream, and a liquid stream containing LPG which is then returned to the storage tank for reuse in the closed loop process.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: October 16, 2018
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Saham Sam Tafreshi, Piyush Balkrishna Shah, Kamalkumar Ishwar Gursahani, Craig Charles Manion
  • Patent number: 10088228
    Abstract: The apparatus for liquefying a gaseous stream received from a pipeline that is comprised predominantly of ethane and a relatively small amount of other components by using a mixed refrigerant refrigeration cycle loop incorporating heavy hydrocarbons, as well as a distillation column to remove constituents lighter than ethane.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: October 2, 2018
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Michael A. Turney, Yasser Jebbari
  • Patent number: 10006701
    Abstract: A method for operating a natural gas liquids processing (NGL) system, the system being selectively configured in either an ethane rejection configuration or an ethane recovery configuration, the method comprising, when the NGL system is in the ethane rejection configuration, collecting a reboiler bottom stream that, in the ethane rejection configuration, includes ethane in an amount of less than 5% by volume, and when the NGL system is in the ethane recovery configuration, collecting a reboiler bottom stream that, in the ethane recovery configuration, includes ethane in an amount of at least about 30% by volume.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: June 26, 2018
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Patent number: 9964352
    Abstract: Embodiments described herein provide methods and systems for separating a mixed ethane and CO2. A method described includes generating a liquid stream including ethane and CO2. The liquid stream is flashed to form an ethane vapor stream and solid CO2. The solid CO2 is accumulated in an accumulation vessel and the gas is removed from the top of the accumulation vessel.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: May 8, 2018
    Assignee: ExxonMobil Upstream Research Company
    Inventor: Russell H. Oelfke
  • Patent number: 9909803
    Abstract: A process and apparatus for separating a feed containing hydrogen, carbon monoxide, methane, and optionally nitrogen to form a product gas having a desired H2:CO molar ratio and optionally a hydrogen product gas and a carbon monoxide product gas. The feed is partially condensed to form a hydrogen-enriched vapor fraction and a carbon monoxide-enriched liquid fraction. The hydrogen-enriched vapor fraction and carbon monoxide-enriched liquid fraction are combined in a regulated manner to form an admixture, which is cryogenically separated to form the product mixture having the desired H2:CO molar ratio.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: March 6, 2018
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Brian Alfred McNeil, Andrew Weaver, David Graham Winter
  • Patent number: 9908060
    Abstract: A distillation apparatus of the present invention includes high-pressure column 1 corresponding to a region above a heat exchanging section located at a lowermost part of a region including a trayed section or a packed bed section, which is used as a rectifying section; and low-pressure column 2 that is located above as seen from high-pressure column 1, which integrates a region including a trayed section or a packed bed section which is used as a stripping section, with rectifying section corresponding portion 2g that corresponds to a region locating below the heat exchanging section located at the lowermost part in the rectifying section. Rectifying section corresponding portion 2g is located on top 2c of the stripping section in low-pressure column 2 so that rectifying section corresponding portion 2g continues to the stripping section.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: March 6, 2018
    Assignee: Toyo Engineering Corporation
    Inventors: Toshihiro Wakabayashi, Takato Nakao
  • Patent number: 9903645
    Abstract: The process for liquefying a gaseous stream received from a pipeline that is comprised predominantly of ethane and a relatively small amount of other components by using a mixed refrigerant loop incorporating heavy hydrocarbons (butane, and/or pentane), as well as a distillation column to remove constituents lighter than ethane. Prior to cooling in a main heat exchanger, the gaseous stream is split into two fractions. The first fraction is cooled in the main heat exchanger and introduced to the distillation column. The second fraction is expanded to produce a two phase fluid, with the liquid fraction being introduced to the distillation column below the first fraction, and the gas fraction being cooled and then introduced to the distillation column at a point above the first fraction.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: February 27, 2018
    Assignee: L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
    Inventors: Michael A. Turney, Paul Terrien, Yasser Jebbari
  • Patent number: 9903646
    Abstract: The apparatus for liquefying a gaseous stream received from a pipeline that is comprised predominantly of ethane and a relatively small amount of other components by using a mixed refrigerant refrigeration cycle loop incorporating heavy hydrocarbons, as well as a distillation column to remove constituents lighter than ethane. Prior to cooling in a main heat exchanger, the gaseous stream is split into two fractions. The main heat exchanger is configured to cool the first fraction before heading to the distillation column for separation therein. An expansion device expands the second fraction to produce a two phase fluid, which is separated in a gas/liquid separator, with the liquid fraction being introduced to the distillation column below the first fraction, and the gas fraction being cooled and then introduced to the distillation column at a point above the first fraction.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: February 27, 2018
    Assignee: L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
    Inventors: Michael A. Turney, Paul Terrien, Yasser Jebbari
  • Patent number: 9896394
    Abstract: A propane dehydrogenation and propylene purification process in which a stream comprising propylene, propane, and methyl acetylene and propadiene (MAPD) is mixed with a hydrogen stream then reacted in at least three distinct reaction zones in a hydrogenation reactor system where MAPD is hydrogenated by a high-selectivity hydrogenation catalyst in a first reaction zone, and a second and a third reaction zones each have a low-selectivity hydrogenation catalyst to remove unreacted hydrogen. The outlet stream leaving the hydrogenation reactor system is MAPD-free and can be fed to a splitter column, which now mainly serves to separate propylene from propane. Various embodiments of reaction zone arrangements in a single or multiple reactors are also provided.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: February 20, 2018
    Assignee: National Industrialization Company
    Inventor: Pablo Rafael Arocha
  • Patent number: 9816752
    Abstract: A system and method for removing nitrogen and producing a high pressure methane product stream from natural gas feed streams having wide variations in nitrogen and methane content are disclosed. Optional add-on systems may be incorporated into the nitrogen and methane separation to produce an NGL sales stream to reduce excess hydrocarbons in the nitrogen vent stream, or to recover helium. The system and method of the invention are particularly suitable for use with feed streams in excess of 50 MMSCFD and up to 300 MMSCFD and containing up to 100 ppm carbon dioxide. Typical power requirements for compressing the methane product stream to produce a suitably high pressure stream for sale are reduced according to the systems and methods of the invention.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: November 14, 2017
    Assignee: Butts Properties, Ltd.
    Inventor: Rayburn C. Butts
  • Patent number: 9790147
    Abstract: A process and an apparatus are disclosed for a compact processing assembly to fractionate lighter components from mixed hydrocarbon streams. The hydrocarbon stream is supplied to the processing assembly between an absorbing means and a mass transfer means. A distillation vapor stream is collected from the upper region of the absorbing means and cooled in a first heat and mass transfer means inside the processing assembly to partially condense it, forming a volatile stream and a condensed stream. The condensed stream is supplied to the absorbing means as its top feed. A distillation liquid stream is collected from the lower region of the mass transfer means and heated in a second heat and mass transfer means inside the processing assembly to strip out its volatile components, forming a relatively less volatile stream and a vaporized stream. The vaporized stream is supplied to the mass transfer means as its bottom feed.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: October 17, 2017
    Assignees: Ortloff Engineers, Ltd., S.M.E. Products, LP
    Inventors: Joe T Lynch, John D. Wilkinson, Scott A. Miller, Hank M. Hudson, Kyle T. Cuellar, Andrew F. Johnke, W. Larry Lewis
  • Patent number: 9746233
    Abstract: In a process for the separation of a gas rich in carbon dioxide and containing at least one component lighter than carbon dioxide, the feed gas rich in carbon dioxide is cooled in a first heat exchanger, partially condensed and separated to form a gaseous portion and a liquid, sending the liquid portion to the top of a distillation column, removing a liquid stream richer in carbon dioxide than the feed gas from the bottom of the distillation column, removing a gaseous stream less rich in carbon dioxide than the feed gas from the top of the distillation column and warming the gaseous stream in the first heat exchanger, sending the gaseous portion to a shell and tube heat exchanger having tubes in a bath of triple point carbon dioxide, in which it condenses at least partially to form a liquid fraction, sending the liquid fraction to the top of the distillation column, vaporizing a liquid stream from the bottom of the distillation column outside or within the distillation column to form a gas which is subsequent
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: August 29, 2017
    Assignee: L'Air Liquide Socieété Anonyme Pour l'Étude Et l'Exploitation Des Procedes Georges Clause
    Inventors: Alain Briglia, Arthur Darde, Paul Terrien
  • Patent number: 9638462
    Abstract: The method according to the invention comprises the separation of a feed stream (16) into a first fraction (60) and a second fraction (62) and the injection of at least part of the second fraction (62) into a second dynamic expansion turbine (46) to form a second expanded fraction (80). It comprises the cooling of the second expanded fraction (80) through heat exchange with at least part of the first headstream (84) coming from a first column (28) and the formation of a second feed stream (82) of the first column (28) from the second cooled expanded fraction.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: May 2, 2017
    Assignee: Technip France
    Inventors: Julie Gouriou, Vanessa Gahier, Sandra Thiebault, Loic Barthe
  • Patent number: 9423175
    Abstract: A natural gas liquids plant uses a demethanizer and a deethanizer in a two-column or single column configuration that can be used for ethane recovery and ethane rejection. During ethane recovery, 95% ethane recovery and 99% propane recovery are achieved, while during ethane rejection the sales gas Wobbe Index requirement is maintained while maintaining 95% propane recovery. A residue gas recycle exchanger is most preferably configured to use the demethanizer overhead product to either cool a portion of the residue gas and a portion of the feed gas during ethane recovery, or to cool a portion of the feed gas using two distinct heat transfer areas to produce a feed gas reflux at significantly lower temperature.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: August 23, 2016
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Patent number: 9389015
    Abstract: Described herein is a method for separating C2+-hydrocarbons or C3+-hydrocarbons from a hydrocarbon-rich fraction is described, whereby the separation is carried out in a rectification fractionation. The rectification fractionation is provided with at least three heating circuits via which intermediate fractions are drawn off from rectification fractionation, partially evaporated and fed back again to rectification fractionation. In the method, removal of the intermediate fraction circulating in the heating circuit located at the highest temperature level is at least temporarily interrupted. During this interruption, a partial stream of a bottom fraction from the rectification fractionation is partially evaporated against an external medium and is fed as a bottom heating to the rectification fractionation.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: July 12, 2016
    Assignee: LINDE AKTIENGESELLSCHAFT
    Inventors: Rainer Sapper, Jurgen Witte
  • Patent number: 9278295
    Abstract: A distillation apparatus includes a rectifying column, a stripping column, a first pipe that communicates a column top of the stripping column with a column bottom of the rectifying column, and a compressor configured to compress vapor from the stripping column and then to feed the compressed vapor to the rectifying column. The distillation apparatus further includes a heat exchanger located at a predetermined stage of the rectifying column, a liquid withdrawal unit located at a predetermined stage of the stripping column and configured to withdraw a part of liquid from the predetermined stage to an outside of the column, a second pipe that introduces the liquid from the liquid withdrawal unit to the heat exchanger, and a third pipe that introduces fluids introduced through the second pipe to the heat exchanger and then discharged out of the heat exchanger to a stage directly below the liquid withdrawal unit.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: March 8, 2016
    Assignee: TOYO ENGINEERING CORPORATION
    Inventors: Toshihiro Wakabayashi, Takato Nakao
  • Patent number: 9266034
    Abstract: A distillation apparatus includes a rectifying column, a stripping column located above seen from the rectifying column, a liquid sump unit located at a predetermined stage of the stripping column and configured to hold liquid that has flowed downward, a heat exchanger located in the liquid sump unit, a second pipe for introducing vapor in the rectifying column to the heat exchanger of the stripping column, and a third pipe for introducing fluids flowing out from the heat exchanger of the stripping column to the rectifying column. Further, a flare line having lower pressure than pressure in the rectifying column is connected to a downstream side of the third pipe. The distillation apparatus can switch a first flow toward an inside of the rectifying column through the third pipe to a second flow branching from the third pipe toward a pipe at a lower pressure side.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: February 23, 2016
    Assignee: TOYO ENGINEERING CORPORATION
    Inventors: Toshihiro Wakabayashi, Takato Nakao
  • Patent number: 9239186
    Abstract: Provided is a method for operating a fuel supply system for a marine structure. The fuel supply system includes a BOG compression unit configured to receive and compress BOG generated in a storage tank, a reliquefaction apparatus configured to receive and liquefy the BOG compressed by the BOG compression unit, a high-pressure pump configured to compress the liquefied BOG generated by the reliquefaction apparatus, and a high-pressure gasifier configured to gasify the liquefied BOG compressed by the high-pressure pump. The fuel supply system includes a recondenser installed at an upstream side of the high-pressure pump, and the recondenser recondenses a portion or all of the generated BOG by using liquefied gas supplied from the storage tank. During a ballast voyage process, all of the BOG is supplied to and recondensed by the recondenser, and an operation of the reliquefaction apparatus is interrupted.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: January 19, 2016
    Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Seung Kyo Jung, Je Heon Jung, Jung Han Lee, Hyun Jun Shin, Sung Jun Lee, Dong Kyu Choi
  • Patent number: 9021831
    Abstract: A process and an apparatus are disclosed for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream in a compact processing assembly. The gas stream is cooled and divided into first and second streams. The first stream is further cooled to condense substantially all of it and is thereafter expanded to lower pressure and supplied as the top feed to an absorbing means inside the processing assembly. The second stream is also expanded to lower pressure and supplied as the bottom feed to the absorbing means. A distillation vapor stream is collected from the upper region of the absorbing means and directed into one or more heat exchange means inside the processing assembly to heat it while cooling the gas stream and the first stream.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: May 5, 2015
    Assignees: Ortloff Engineers, Ltd., S.M.E. Products LP
    Inventors: Andrew F. Johnke, Larry Lewis, John D. Wilkinson, Joe T. Lynch, Hank M. Hudson, Kyle T. Cuellar
  • Patent number: 9021832
    Abstract: A process and an apparatus are disclosed for recovering ethane, ethylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The stream is cooled, expanded to lower pressure, and supplied to a first fractionation tower at a mid-column feed position. A distillation liquid stream is withdrawn from the first fractionation tower below the feed position of the expanded stream, heated, and directed into a second fractionation tower that produces an overhead vapor stream and a bottom liquid stream. The overhead vapor stream is cooled to condense it, with a portion of the condensed stream directed to the second fractionation tower as its top feed and the remainder directed to the first fractionation tower at a lower column feed position. The bottom liquid stream from the second fractionation tower is cooled and directed to the first fractionation tower as its top feed.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: May 5, 2015
    Assignee: Ortloff Engineers, Ltd.
    Inventors: Michael C. Pierce, John D. Wilkinson, Hank M. Hudson
  • Publication number: 20150114035
    Abstract: In a process for the cryogenic separation of a feed mixture of at least carbon monoxide, hydrogen and methane, the feed mixture is separated in a methane wash column fed by a liquid methane stream at the top of the methane wash column to produce a gas enriched in hydrogen, a liquid stream from the bottom of the methane wash column is treated to produce a mixture of carbon monoxide and methane, the mixture of carbon monoxide and methane is separated in a separation column to produce a gas enriched in carbon monoxide and a liquid methane flow at least part of which forms a purge stream, the purge stream being varied to take account of load variations.
    Type: Application
    Filed: April 29, 2013
    Publication date: April 30, 2015
    Inventors: Alain Briglia, Emmanuelle Brocheriou, Pascal Marty, Bhadri Prasad
  • Patent number: 9016088
    Abstract: A system and method for removing nitrogen and producing liquefied natural gas (“LNG”) from methane without the need for external refrigeration. The invention also relates to a system and method for removing nitrogen from methane and for producing liquefied nitrogen in addition to LNG. The system and method of the invention are particularly suitable for use in recovering and processing comparatively small volumes of methane from coal mines or from flash gas captured at an LNG loading site.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: April 28, 2015
    Assignee: Butts Propertties, Ltd.
    Inventor: Rayburn C. Butts
  • Patent number: 9003829
    Abstract: The invention relates to a method for the separation of a hydrocarbon-rich, nitrogen-containing feed fraction (1, 101), preferably natural gas, wherein the feed fraction (1, 101) is at least in part liquefied (E1, E2) and divided by rectification (T1) into a nitrogen-enriched fraction (14, 110) and a hydrocarbon-rich, nitrogen-depleted fraction (11, 111) and wherein, in the upper region of the rectification (T1), a nitrogen-enriched stream (14) is taken off, cooled (E3) and applied (20) at least in part to the rectification (T1) as reflux and/or the nitrogen-enriched fraction (110) is cooled and partially condensed (E3), applied at least in part to the rectification (T1) as reflux (115) and the remaining stream (116) of the nitrogen-enriched fraction (110) is subjected to a double-column process (T3).
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: April 14, 2015
    Assignee: Linde Aktiengesellschaft
    Inventors: Heinz Bauer, Martin Gwinner, Daniel Garthe
  • Patent number: 8997519
    Abstract: A method and device for the cryogenic separation of a methane-rich flow is provided.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: April 7, 2015
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventor: Pierre Briend
  • Publication number: 20150073195
    Abstract: A process and an apparatus are disclosed for a compact processing assembly to fractionate lighter components from mixed hydrocarbon streams. The hydrocarbon stream is supplied to the processing assembly between an absorbing means and a mass transfer means. A distillation vapor stream is collected from the upper region of the absorbing means and cooled in a first heat and mass transfer means inside the processing assembly to partially condense it, forming a volatile stream and a condensed stream. The condensed stream is supplied to the absorbing means as its top feed. A distillation liquid stream is collected from the lower region of the mass transfer means and heated in a second heat and mass transfer means inside the processing assembly to strip out its volatile components, forming a relatively less volatile stream and a vaporized stream. The vaporized stream is supplied to the mass transfer means as its bottom feed.
    Type: Application
    Filed: August 18, 2014
    Publication date: March 12, 2015
    Inventors: Joe T. Lynch, John D. Wilkinson, Scott A. Miller, Hank M. Hudson, Kyle T. Cuellar, Andrew F. Johnke, W. Larry Lewis
  • Publication number: 20150073194
    Abstract: A process and an apparatus are disclosed for a compact processing assembly to improve the recovery of C2 (or C3) and heavier hydrocarbon components from a hydrocarbon gas stream. The preferred method of separating a hydrocarbon gas stream generally includes producing at least a substantially condensed first stream and a cooled second stream, expanding both streams to lower pressure, and supplying the streams to a fractionation tower. In the process and apparatus disclosed, the expanded first stream is heated to form a vapor fraction and a liquid fraction. The vapor fraction is combined with the tower overhead vapor, directed to a heat and mass transfer means inside a processing assembly, and cooled and partially condensed by the expanded first stream to form a residual vapor stream and a condensed stream. The condensed stream is combined with the liquid fraction and supplied to the tower at its top feed point.
    Type: Application
    Filed: August 18, 2014
    Publication date: March 12, 2015
    Inventors: Hank M. Hudson, John D. Wilkinson, Joe T. Lynch, Scott A. Miller, Kyle T. Cuellar, Andrew F. Johnke, W. Larry Lewis
  • Publication number: 20150052941
    Abstract: Fractionation systems utilizing a single rectifying column with a stripping column housed in the same vessel and having a uniform diameter are described. Methods of separating feed streams using the fractionation systems are also described.
    Type: Application
    Filed: September 30, 2013
    Publication date: February 26, 2015
    Applicant: UOP LLC
    Inventors: Stephen T. King, Steven Kozup, Xin X. Zhu
  • Publication number: 20150052940
    Abstract: Fractionation systems utilizing a rectifying column with a stripping column are described. The liquid from the rectifying column bottoms is sent to the first tray of the stripping column, while the overhead stream from the stripping column is sent to the bottom of the rectifying column. Processes for separating feed streams are also described.
    Type: Application
    Filed: September 30, 2013
    Publication date: February 26, 2015
    Applicant: UOP LLC
    Inventors: Stephen T. King, Steven Lankton, Xin X. Zhu
  • Publication number: 20150047391
    Abstract: A system and process for separating ethane and propane from a feed stream comprising dehydrated liquefied petroleum gas is disclosed. A distillation column operates at a lower pressure and temperature than conventional distillation columns. High purity liquid propane exits the bottom of the distillation column and is flashed through a cooling control valve becoming a two-phase stream with the vapor entering a heat pump compressor. The high or increased temperature compressed propane stream exiting the heat pump compressor is directed into the distillation column to drive the separation of the ethane and propane, allowing the elimination of a reboiler from the system and process.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Applicant: S & B ENGINEERS AND CONSTRUCTORS, LTD.
    Inventors: Guy S. Suffridge, Sean C. Gattis, Marshall J. Fullwood
  • Patent number: 8955354
    Abstract: Methods and systems are provided for treating hydrogen sulfide rich sour gas through a series of fractionation columns. The processes disclosed herein and the variations thereof provide optimized processes for the removal of hydrogen sulfide from sour gas through the introduction of innovative azeotrope breakers, novel configurations of process equipment, and optimized operating conditions. Advantages of certain embodiments of the present invention include reduced equipment requirements, improved process efficiencies, reduced operating costs, and reduced capital costs. Other advantages include better process suitability to certain environmental conditions such as the arctic cold when compared to conventional amine treatment processes.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: February 17, 2015
    Assignee: ConocoPhillips Company
    Inventors: Shawn S. Huang, Douglas Elliot, Jame Yao, Wei Yan, Naushad A. Kassamali, Mark S. Elkins
  • Patent number: 8956428
    Abstract: A process for treating offshore natural gas includes processing the natural gas on an off-shore processing facility by, (i) liquefying and fractionating the natural gas to generate a liquefied natural gas stream and a higher hydrocarbon stream, (ii) vaporizing at least a portion of the higher hydrocarbon stream, (iii) passing the vaporized higher hydrocarbon stream and steam over a steam reforming catalyst to generate a reformed gas mixture comprising methane, steam, carbon oxides and hydrogen, (iv) passing the reformed gas mixture over a methanation catalyst to generate a methane rich gas, and (v) combining the methane-rich gas with the natural gas prior to the liquefaction step.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: February 17, 2015
    Assignee: Johnson Matthey PLC
    Inventors: Peter John Herbert Carnell, Ginny Yuen Che Ng
  • Publication number: 20150013380
    Abstract: A method is provided for separating off acid gases, in particular CO2 and H2S, from a hydrocarbon-rich fraction, in particular natural gas. The hydrocarbon-rich fraction is cooled and partially condensed. The resultant CO2-enriched liquid fraction is separated by rectification into a CO2-rich liquid fraction and a CO2-depleted gas fraction. The hydrocarbon-rich fraction is cooled close to the temperature of the CO2 triple point by means of a closed multistage refrigeration circuit. The refrigerant is a CO2 fraction of greater than 99.5% by volume. The rectification column is operated at a pressure between 40 and 65 bar. The reboiler of the rectification column is heated by means of a condensing refrigerant substream of the refrigeration circuit that is at a suitable pressure level.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 15, 2015
    Applicant: LINDE AKTIENGESELLSCHAFT
    Inventors: Heinz BAUER, Claudia GOLLWITZER
  • Patent number: 8919148
    Abstract: A process for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. The stream is cooled and divided into first and second streams. The first stream is further cooled to condense substantially all of it and is thereafter expanded to the fractionation tower pressure and supplied to the fractionation tower at a first mid-column feed position. The second stream is expanded to the tower pressure and is then supplied to the column at a second mid-column feed position. A vapor distillation stream is withdrawn from the column above the feed point of the second stream and is then directed into heat exchange relation with the tower overhead vapor stream to cool the vapor distillation stream and condense at least a part of it, forming a condensed stream. At least a portion of the condensed stream is directed to the fractionation tower as its top feed.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: December 30, 2014
    Assignee: Ortloff Engineers, Ltd.
    Inventors: John D. Wilkinson, Joe T. Lynch, Hank M. Hudson, Kyle T. Cuellar, Tony L. Martinez
  • Patent number: 8910495
    Abstract: Devices and methods for retrofitting a natural gas liquids plant are contemplated to extend recovery of C3+ hydrocarbons from various feed gases to recovery of C2+ and C3+ hydrocarbons. In especially preferred aspects, dedicated C2+ exchangers are integrated to exclusively cool the feed gas to produce a cooled absorber feed and to produce two separate absorber reflux streams. During C2+ recovery, absorber reflux is provided by a portion of the residue gas and a portion of the feed gas, while during C3+ recovery absorber and distillation column reflux are provided by the distillation column overhead product.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: December 16, 2014
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Patent number: 8899076
    Abstract: Disclosed is a gas treatment device that can efficiently regulate the temperature of a gas without being affected by load.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: December 2, 2014
    Assignee: Mitsubishi Heavy Industries Compressor Corporation
    Inventors: Kazuhiro Takeda, Yosuke Nakagawa, Tomoaki Takeda, Yasushi Mori
  • Publication number: 20140345320
    Abstract: A process for dehydrating and removing heavy hydrocarbons in the production of liquefied natural gas from a methane-rich gas mixture is disclosed, wherein the methane-rich gas mixture subjected to deacidification treatment is divided into two streams, i.e. the first stream and the second stream, wherein the first stream used as a system process gas is introduced into a drying procedure, and the second stream used as regenerating gas is introduced into a regenerating procedure; the first stream is subjected to a drying treatment, and the moisture and the heavy hydrocarbons are simultaneously removed from the first stream in a composite adsorbent bed(s) of a drying tower, wherein the moisture is removed such that the dew point at normal pressure is ??76° C.
    Type: Application
    Filed: September 13, 2012
    Publication date: November 27, 2014
    Applicant: XINDI ENERGY ENGINEERING TECHNOLOGY CO., LTD.
    Inventors: Yonggen Xuan, Huazhou Xu
  • Publication number: 20140338395
    Abstract: Embodiments described herein provide methods and systems for generating a CO2 product stream. A method described includes generating a liquid acid gas stream including H2S and CO2. The liquid acid gas stream is flashed to form a first vapor stream and a bottom stream. The bottom stream is fractionated to form a second vapor stream and a liquid acid waste stream. The first vapor stream and the second vapor stream are combined to form a combined vapor stream. The combined vapor stream is treated in an absorption column to remove excess H2S, forming the CO2 product stream.
    Type: Application
    Filed: November 16, 2012
    Publication date: November 20, 2014
    Inventors: Russell H. Oelfke, Tor Vestad
  • Patent number: 8881549
    Abstract: A process and an apparatus are disclosed for a compact processing assembly to recover propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The gas stream is cooled, expanded to lower pressure, and fed to an absorbing means. A first distillation liquid stream from the absorbing means is fed to a mass transfer means. A first distillation vapor stream from the mass transfer means is cooled to partially condense it, forming a residual vapor stream and a condensed stream. The condensed stream is supplied as the top feed to the absorbing means. A second distillation vapor stream from the absorbing means is heated by cooling the first distillation vapor stream, combined with the residual vapor stream, and heated by cooling the gas stream. A second distillation liquid stream from the mass transfer means is heated in a heat and mass transfer means to strip out its volatile components.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: November 11, 2014
    Assignees: Ortloff Engineers, Ltd., S.M.E. Products, LP
    Inventors: Andrew F. Johnke, W. Larry Lewis, John D. Wilkinson, Joe T. Lynch, Hank M. Hudson, Kyle T. Cuellar
  • Patent number: 8850849
    Abstract: A process for recovering ethane and heavier hydrocarbons from LNG and a hydrocarbon gas stream is disclosed. The LNG feed stream is divided into two portions. The first is supplied to a fractionation column as a first upper mid-column feed. The second portion is heated while condensing a portion of a column distillation stream, thereby producing a “lean” LNG stream and a reflux stream. The reflux stream is supplied as top column feed. The second portion of LNG feed is heated further and supplied to the column as a first lower mid-column feed. The gas stream is divided into two portions. The second is expanded, then both portions are cooled while vaporizing the lean LNG stream and heating another portion of the distillation stream. The colder first portion is supplied to the column as a second upper mid-column feed, and the second is supplied as a second lower mid-column feed.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: October 7, 2014
    Assignee: Ortloff Engineers, Ltd.
    Inventors: Tony L. Martinez, John D. Wilkinson, Hank M. Hudson, Kyle T. Cuellar
  • Publication number: 20140290307
    Abstract: This method comprises a separation of a feed stream (16) into a first fraction (41A) and a second fraction (41B). It comprises injecting the first cooled feed fraction (42) into a first separating flask (22) to produce a light head stream (44). The method comprises expanding a turbine feed fraction (48) resulting from the light head stream (44) in a first turbine (26) up to a first pressure and injecting the first expanded fraction (54) into a distillation column (30). The method comprises expanding the second fraction of the feed stream (41B) in a second turbine (40) up to a second pressure substantially equal to the first pressure. The second expanded fraction (91A) from the second dynamic expansion turbine (40) is used to form a cooled reflux stream (91B) injected into the column (30).
    Type: Application
    Filed: December 26, 2011
    Publication date: October 2, 2014
    Applicant: TECHNIP FRANCE
    Inventors: Vanessa Gahier, Julie Gouriou, Sandra Thiebault, Loic Barthe
  • Patent number: 8840707
    Abstract: A gas condensate production plant comprises a plurality of separation units in which C2 and/or C3 lighter components are stripped from the separator feeds using compressed heated stripping vapor produced from the feed in respective downstream separation units. Contemplated plants substantially reduce heating and cooling duties by using the waste heat from the compressor discharges in the separation process. Furthermore, the multi-stage fractionation according to the inventive subject matter provides improved gas condensate recovery at reduced energy costs.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: September 23, 2014
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Publication number: 20140260420
    Abstract: A natural gas liquids plant uses a demethanizer and a deethanizer in a two-column or single column configuration that can be used for ethane recovery and ethane rejection. During ethane recovery, 95% ethane recovery and 99% propane recovery are achieved, while during ethane rejection the sales gas Wobbe Index requirement is maintained while maintaining 95% propane recovery. A residue gas recycle exchanger is most preferably configured to use the demethanizer overhead product to either cool a portion of the residue gas and a portion of the feed gas during ethane recovery, or to cool a portion of the feed gas using two distinct heat transfer areas to produce a feed gas reflux at significantly lower temperature.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: FLUOR TECHNOLOGIES CORPORATION
    Inventor: John MAK
  • Publication number: 20140238075
    Abstract: This method comprises cooling the feed natural gas in a first heat exchanger and introducing the cooled, feed natural gas into a first separation flask. It comprises the dynamic expansion of a turbine supply flow in a first expansion turbine and introducing the expanded flow into a separation column. This method comprises removing, at the head of the separation column, a head flow rich in methane and removing a first recirculation flow from the compressed head flow rich in methane. The method comprises forming at least a second recirculation flow obtained from the head flow rich in methane downstream of the separation column and forming a dynamic expansion flow from the second recirculation flow.
    Type: Application
    Filed: May 5, 2014
    Publication date: August 28, 2014
    Inventors: Henri PARADOWSKI, Sandra THIEBAULT, Loic BARTHE
  • Patent number: 8794029
    Abstract: A process for separating hydrocarbons from an LNG, including the steps of: distilling a feed LNG in a first distillation column to separate it into a fraction enriched with methane and a fraction enriched with components heavier than methane; distilling the fraction enriched with components heavier than methane in a second distillation column to separate it into a fraction enriched with ethane and a fraction enriched with components heavier than ethane; recovering the cryogenic heat of the feed LNG to be fed into the first distillation column or of the liquid inside the first distillation column by using a heat transfer medium; and cooling the overhead gas of the second distillation column by using the heat transfer medium which has recovered the cryogenic heat to condense at least part of the overhead gas of the second distillation column. An apparatus for carrying out this process.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: August 5, 2014
    Assignee: Toyo Engineering Corporation
    Inventors: Hiroshi Yokohata, Shoichi Yamaguchi, Akihiko Tamakoshi
  • Publication number: 20140202207
    Abstract: A process for separating a hydrocarbon gas into a fraction containing a predominant portion of the methane or ethane and lighter components and a fraction containing a predominant portion of the C2 or C3 and heavier components in which process the feed gas is treated in one or more heat exchange, and expansion steps; partly condensed feed gas is directed into a separator wherein a first residue vapor is separated from a C2 or C3-containing liquid; and C2 or C3-containing liquids, at substantially the pressure of separation, are directed into a distillation column wherein said liquid is separated into a second residue is separated to recover a C2 or C3-containing product.
    Type: Application
    Filed: January 18, 2013
    Publication date: July 24, 2014
    Inventor: Zaheer I. Malik
  • Patent number: 8758572
    Abstract: The present invention is a novel method for removing tritium oxide contamination from a solution with water. The method captures the tritium oxide in a much smaller volume suitable for economical disposal. In so doing the original water is decontaminated of the tritium oxide and may be discharged.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: June 24, 2014
    Assignees: Exelon Generation Company, LLC, Industrial Idea Partners
    Inventors: Randall N. Avery, Charlie Booth, Keith Moser