CA2909598C - Procede et appareil de production d'un flux d'hydrocarbure liquefie - Google Patents

Procede et appareil de production d'un flux d'hydrocarbure liquefie Download PDF

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Publication number
CA2909598C
CA2909598C CA2909598A CA2909598A CA2909598C CA 2909598 C CA2909598 C CA 2909598C CA 2909598 A CA2909598 A CA 2909598A CA 2909598 A CA2909598 A CA 2909598A CA 2909598 C CA2909598 C CA 2909598C
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Prior art keywords
vapour
stream
nitrogen
stripping
line
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CA2909598A
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CA2909598A1 (fr
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Jan Van Amelsvoort
Alexandre M. C. R. Santos
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Shell Internationale Research Maatschappij BV
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Shell Internationale Research Maatschappij BV
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/004—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by flash gas recovery
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    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
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    • F25J1/0215—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a dual level refrigeration cascade with at least one MCR cycle with one SCR cycle
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    • F25J1/0229—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock
    • F25J1/023—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock for the combustion as fuels, i.e. integration with the fuel gas system
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    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/74—Refluxing the column with at least a part of the partially condensed overhead gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/06—Splitting of the feed stream, e.g. for treating or cooling in different ways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/60—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being hydrocarbons or a mixture of hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/30—Dynamic liquid or hydraulic expansion with extraction of work, e.g. single phase or two-phase turbine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/90—Processes or apparatus involving steps for recycling of process streams the recycled stream being boil-off gas from storage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2260/00—Coupling of processes or apparatus to other units; Integrated schemes
    • F25J2260/60—Integration in an installation using hydrocarbons, e.g. for fuel purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/02—Internal refrigeration with liquid vaporising loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/12—External refrigeration with liquid vaporising loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2280/00—Control of the process or apparatus
    • F25J2280/02—Control in general, load changes, different modes ("runs"), measurements

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

Un premier flux d'apport de fractionnement d'azote est envoyé dans une colonne de fractionnement d'azote à une pression de fractionnement. Un liquide à azote fractionné dans un espace puisard de la colonne de fractionnement d'azote est aspiré, est dépressurisé pour être porté à une pression flash inférieure à la pression de fractionnement, et est envoyé dans un séparateur flash terminal. Un flux de produit d'hydrocarbure liquéfié est évacué du séparateur flash terminal ainsi que la vapeur de procédé. La vapeur de procédé est comprimée jusqu'à au moins la pression de fractionnement, et divisée en un flux de vapeur de fractionnement et un flux de vapeur de combustible gazeux. Le flux de vapeur de fractionnement est envoyé dans la colonne de fractionnement d'azote, alors que le flux de vapeur de combustible gazeux est envoyé dans une turbine à gaz. Un autre combustible gazeux, ayant un pouvoir calorifique inférieur, est obtenu à partir de la vapeur de tête provenant de la colonne de fractionnement d'azote. Cet autre combustible gazeux est brûlé dans un dispositif de combustion autre qu'une turbine à gaz.
CA2909598A 2013-04-22 2014-03-21 Procede et appareil de production d'un flux d'hydrocarbure liquefie Active CA2909598C (fr)

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Application Number Priority Date Filing Date Title
EP13164692.9A EP2796818A1 (fr) 2013-04-22 2013-04-22 Procédé et appareil de production d'un flux d'hydrocarbure liquéfié
EP13164692.9 2013-04-22
PCT/EP2014/055765 WO2014173593A2 (fr) 2013-04-22 2014-03-21 Procédé et appareil de production d'un flux d'hydrocarbure liquéfié

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Publication number Priority date Publication date Assignee Title
CN112494993A (zh) * 2020-12-28 2021-03-16 大连福佳·大化石油化工有限公司 吸附塔汽提系统及其汽提方法
US20230076428A1 (en) * 2021-09-02 2023-03-09 Air Products And Chemicals, Inc. Integrated nitrogen rejection for liquefaction of natural gas

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1069331A (en) * 1965-02-19 1967-05-17 Couch Internat Methane Ltd A process for the partial liquefaction of a gas mixture
US4404008A (en) 1982-02-18 1983-09-13 Air Products And Chemicals, Inc. Combined cascade and multicomponent refrigeration method with refrigerant intercooling
IT1176290B (it) 1984-06-12 1987-08-18 Snam Progetti Processo per raffreddamento e liquefazione di gas a basso punto di ebollizione
US4746342A (en) * 1985-11-27 1988-05-24 Phillips Petroleum Company Recovery of NGL's and rejection of N2 from natural gas
FR2682964B1 (fr) 1991-10-23 1994-08-05 Elf Aquitaine Procede de deazotation d'un melange liquefie d'hydrocarbures consistant principalement en methane.
MY118329A (en) 1995-04-18 2004-10-30 Shell Int Research Cooling a fluid stream
MY117899A (en) 1995-06-23 2004-08-30 Shell Int Research Method of liquefying and treating a natural gas.
US5657643A (en) 1996-02-28 1997-08-19 The Pritchard Corporation Closed loop single mixed refrigerant process
JP3895386B2 (ja) 1996-02-29 2007-03-22 シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ 液化天然ガス中低沸点成分量の低減
US5669234A (en) 1996-07-16 1997-09-23 Phillips Petroleum Company Efficiency improvement of open-cycle cascaded refrigeration process
DE19716415C1 (de) 1997-04-18 1998-10-22 Linde Ag Verfahren zum Verflüssigen eines Kohlenwasserstoff-reichen Stromes
FR2772896B1 (fr) 1997-12-22 2000-01-28 Inst Francais Du Petrole Procede de liquefaction d'un gaz notamment un gaz naturel ou air comportant une purge a moyenne pression et son application
TW477890B (en) 1998-05-21 2002-03-01 Shell Int Research Method of liquefying a stream enriched in methane
US6308531B1 (en) 1999-10-12 2001-10-30 Air Products And Chemicals, Inc. Hybrid cycle for the production of liquefied natural gas
TW480325B (en) 1999-12-01 2002-03-21 Shell Int Research Plant for liquefying natural gas
US6295833B1 (en) 2000-06-09 2001-10-02 Shawn D. Hoffart Closed loop single mixed refrigerant process
EG24658A (en) 2002-09-30 2010-04-07 Bpcorporation North America In All electric lng system and process
US7127914B2 (en) 2003-09-17 2006-10-31 Air Products And Chemicals, Inc. Hybrid gas liquefaction cycle with multiple expanders
US6962060B2 (en) 2003-12-10 2005-11-08 Air Products And Chemicals, Inc. Refrigeration compression system with multiple inlet streams
US7337631B2 (en) * 2004-03-11 2008-03-04 Advanced Extraction Technologies, Inc. Use of cryogenic temperatures in processing gases containing light components with physical solvents
MY140540A (en) 2004-07-12 2009-12-31 Shell Int Research Treating liquefied natural gas
TW200801513A (en) 2006-06-29 2008-01-01 Fermiscan Australia Pty Ltd Improved process
US20080141711A1 (en) 2006-12-18 2008-06-19 Mark Julian Roberts Hybrid cycle liquefaction of natural gas with propane pre-cooling
US20110239701A1 (en) * 2008-11-03 2011-10-06 Sander Kaart Method of rejecting nitrogen from a hydrocarbon stream to provide a fuel gas stream and an apparatus therefor
WO2011000020A1 (fr) 2009-06-12 2011-01-06 Sbc Research Pty Ltd Procédé amélioré de détection
US20120167617A1 (en) * 2009-07-21 2012-07-05 Alexandra Teodora Anghel Method for treating a multi-phase hydrocarbon stream and an apparatus therefor
GB2462555B (en) * 2009-11-30 2011-04-13 Costain Oil Gas & Process Ltd Process and apparatus for separation of Nitrogen from LNG

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AU2014257929B2 (en) 2017-01-19
AU2014257929A1 (en) 2015-12-03
EP2796818A1 (fr) 2014-10-29
CA2909598A1 (fr) 2014-10-30
WO2014173593A2 (fr) 2014-10-30
WO2014173593A3 (fr) 2015-11-26

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