EP0661505A1 - Verfahren und Einrichtung zur Gasverflüssigung - Google Patents

Verfahren und Einrichtung zur Gasverflüssigung Download PDF

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Publication number
EP0661505A1
EP0661505A1 EP94402787A EP94402787A EP0661505A1 EP 0661505 A1 EP0661505 A1 EP 0661505A1 EP 94402787 A EP94402787 A EP 94402787A EP 94402787 A EP94402787 A EP 94402787A EP 0661505 A1 EP0661505 A1 EP 0661505A1
Authority
EP
European Patent Office
Prior art keywords
cycle
turbine
gas
compression
stage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94402787A
Other languages
English (en)
French (fr)
Other versions
EP0661505B1 (de
Inventor
Bernard Darredeau
Philippe Fraysse
Corinne Garot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0661505A1 publication Critical patent/EP0661505A1/de
Application granted granted Critical
Publication of EP0661505B1 publication Critical patent/EP0661505B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04278—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using external refrigeration units, e.g. closed mechanical or regenerative refrigeration units
    • 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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
    • 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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04333—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/04339—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of air
    • F25J3/04345—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of air and comprising a gas work expansion 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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04333—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/04351—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of nitrogen
    • F25J3/04357—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of nitrogen and comprising a gas work expansion 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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
    • F25J3/04393—Details relating to the work expansion, e.g. process parameter etc. using multiple or multistage gas work expansion
    • 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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
    • F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • 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
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/939—Partial feed stream expansion, air

Definitions

  • the present invention relates to a process for liquefying a gas by means of a refrigeration cycle comprising a so-called “hot” expansion turbine and a so-called “cold” expansion turbine supplied respectively at a first temperature and at a second temperature lower than the first temperature.
  • the object of the invention is to provide a process of this type having a particularly high yield.
  • the subject of the invention is a method of the aforementioned type, characterized in that it comprises at least two stages of compression of the cycle gas, and in that the two turbines are supplied at the same pressure of intake, the cycle gas is expanded in the hot turbine to a first exhaust pressure, and the cycle gas is expanded in the cold turbine to a second exhaust pressure lower than the first pressure exhaust.
  • the invention also relates to an installation for liquefying a gas intended for the implementation of the process defined above.
  • This installation of the type comprising a heat exchange line, a so-called “hot” expansion turbine, a so-called “cold” expansion turbine and cycle compression means, is characterized in that the cycle compression means comprise at least two cycle compression stages in series, the admissions of the two turbines are connected to the discharge of the same cycle compression stage, the exhaust of the hot turbine is connected to the suction of a compression stage of cycle, and the cold turbine exhaust is connected to the suction of a lower cycle compression stage.
  • FIGS. 1 and 2 show only the parts of the air distillation installation concerned by the present invention, and in particular the liquefaction cycle, but it is understood that the installation also includes all the pipes and all the usual equipment necessary for the production of air gas by distillation.
  • the liquefied gas is air to be treated, while in the case of Figure 2, the liquefied gas is nitrogen.
  • the installation comprises a main compressor 6 for atmospheric air, an apparatus 7 for purifying air in water and in anhydride carbon dioxide by adsorption, a cycle compressor 8 with two stages 9 and 10 in series, a hot turbine 11 braked by an alternator 12, and a cold turbine 13 braked by an alternator 14.
  • the atmospheric air to be treated is compressed in 6 to the medium pressure P1, which is the operating pressure of column 3 and which is typically between 5 and 6 bars absolute, then is purified in 7 and compressed again at 9 at an intermediate pressure P2 then at 10 until a high cycle pressure P3, typically of the order of 30 to 100 bars absolute.
  • a first fraction of the air at this high cycle pressure P3 is cooled to an intermediate temperature T1 in the hot part of the heat exchange line 2, then out of the latter and introduced into the hot turbine 11. It emerges from the latter at the inter-stage pressure P2 of the compressor 8, is warmed up to ambient temperature in the hot part of the heat exchange line, and is returned to the intake of the second stage 10 of the same compressor 8.
  • the rest of the air at the high cycle pressure P3 is cooled in 2 to a second intermediate temperature T2 lower than T1. At this temperature, part of the air is removed from the heat exchange line and introduced into the cold turbine 13, from which it emerges at medium pressure P1 and at the temperature of the cold end of the exchange line. thermal. This turbined air is partly heated at 15 from the cold end to the hot end of the heat exchange line and returned to the suction of the first stage 9 of the compressor 8, and partly sent to the tank of column 3. The rest of the high pressure air cooled to temperature T2 continues to cool in 16 until the cold end of the heat exchange line 2, which causes it to liquefy, then it is expanded at medium pressure P1 in an expansion valve 17 and is sent to the tank of column 3.
  • a refrigeration unit 18 can be used to precool at least one of the two high pressure air streams coming from the compressor 8.
  • the electrical energy produced by the two turbines in the alternators 12 and 14 can be used to drive the cycle compressor 8.
  • the refrigeration cycle is used to liquefy nitrogen drawn off at the head of the medium pressure column 3.
  • the cycle compressor 8 is a three-stage nitrogen compressor, the first stages of which 9 and 10 correspond to the two stages 9 and 10 of FIG. 1 and are followed by an additional stage 19 in series delivering the nitrogen to be liquefied under a high liquefaction pressure P4 greater than the highest pressure P3 of the cycle.
  • the hot turbine 11 and the cold turbine 13 are both supplied with gas from the second stage 10, and the gas from the turbine 11 is returned to the suction of this second stage 10.
  • all of the gas coming from the cold turbine 13 is combined with nitrogen withdrawn from the head of the column 3 via a pipe 20, heated in 2 to ambient temperature and returned to the suction of the first stage 9.
  • the nitrogen from stage 10 which is not sent to the turbines is compressed again in 19, then cooled from the hot end to the cold end of the heat exchange line, which causes its liquefaction. Then, this high pressure liquid nitrogen is expanded to medium pressure in an expansion valve 21 and introduced under reflux at the head of the column 3.
  • the use of a multi-stage cycle compressor 8 brings a simplification of the installation and a substantial advantage from the point of view of investment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP94402787A 1993-12-31 1994-12-05 Verfahren und Einrichtung zur Gasverflüssigung Expired - Lifetime EP0661505B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9315959 1993-12-31
FR9315959A FR2714721B1 (fr) 1993-12-31 1993-12-31 Procédé et installation de liquéfaction d'un gaz.

Publications (2)

Publication Number Publication Date
EP0661505A1 true EP0661505A1 (de) 1995-07-05
EP0661505B1 EP0661505B1 (de) 1998-05-27

Family

ID=9454645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402787A Expired - Lifetime EP0661505B1 (de) 1993-12-31 1994-12-05 Verfahren und Einrichtung zur Gasverflüssigung

Country Status (8)

Country Link
US (1) US5454226A (de)
EP (1) EP0661505B1 (de)
JP (1) JPH07324857A (de)
CN (1) CN1107571A (de)
CA (1) CA2139304A1 (de)
DE (1) DE69410584T2 (de)
ES (1) ES2119115T3 (de)
FR (1) FR2714721B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787560A1 (fr) * 1998-12-22 2000-06-23 Air Liquide Procede de separation cryogenique des gaz de l'air
WO2017074544A1 (en) * 2015-10-27 2017-05-04 Praxair Technology, Inc. System and method for providing refrigeration to a cryogenic separation unit

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5802873A (en) * 1997-05-08 1998-09-08 Praxair Technology, Inc. Cryogenic rectification system with dual feed air turboexpansion
US5758515A (en) * 1997-05-08 1998-06-02 Praxair Technology, Inc. Cryogenic air separation with warm turbine recycle
FR2765889B1 (fr) * 1997-07-08 1999-08-13 Air Liquide Procede et installation d'alimentation d'un haut fourneau
US5983666A (en) * 1997-10-27 1999-11-16 The Boc Group, Inc. Air separation plant and method of fabrication
US5907959A (en) * 1998-01-22 1999-06-01 Air Products And Chemicals, Inc. Air separation process using warm and cold expanders
US6000239A (en) * 1998-07-10 1999-12-14 Praxair Technology, Inc. Cryogenic air separation system with high ratio turboexpansion
DE19843629A1 (de) * 1998-09-23 2000-03-30 Linde Ag Verfahren und Verflüssiger zur Erzeugung von flüssiger Luft
EP1067345B1 (de) * 1999-07-05 2004-06-16 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft
CN101608859B (zh) * 2008-06-20 2011-08-17 杭州福斯达实业集团有限公司 高低压氮气双膨胀天然气液化方法
JP5643491B2 (ja) * 2009-07-24 2014-12-17 大陽日酸株式会社 空気液化分離方法及び装置
US20160245585A1 (en) 2015-02-24 2016-08-25 Henry E. Howard System and method for integrated air separation and liquefaction
JP6351895B1 (ja) * 2018-03-20 2018-07-04 レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード 窒素製造方法および窒素製造装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1902601A1 (de) * 1968-02-28 1969-09-18 Air Prod & Chem Tieftemperaturverfahren zum Trennen gasfoermiger Gemische
DE2636933A1 (de) * 1976-08-17 1978-02-23 Linde Ag Verfahren zum abkuehlen und verfluessigen eines tiefsiedenden gases
US4595405A (en) * 1984-12-21 1986-06-17 Air Products And Chemicals, Inc. Process for the generation of gaseous and/or liquid nitrogen
EP0580348A1 (de) * 1992-07-20 1994-01-26 Air Products And Chemicals, Inc. Hybrider Luft und Stickstoff Kreislaufverflüssiger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4705548A (en) * 1986-04-25 1987-11-10 Air Products And Chemicals, Inc. Liquid products using an air and a nitrogen recycle liquefier
FR2652409A1 (fr) * 1989-09-25 1991-03-29 Air Liquide Procede de production frigorifique, cycle frigorifique correspondant et leur application a la distillation d'air.
GB9008752D0 (en) * 1990-04-18 1990-06-13 Boc Group Plc Air separation
JP2909678B2 (ja) * 1991-03-11 1999-06-23 レール・リキード・ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード 圧力下のガス状酸素の製造方法及び製造装置
GB9124242D0 (en) * 1991-11-14 1992-01-08 Boc Group Plc Air separation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1902601A1 (de) * 1968-02-28 1969-09-18 Air Prod & Chem Tieftemperaturverfahren zum Trennen gasfoermiger Gemische
DE2636933A1 (de) * 1976-08-17 1978-02-23 Linde Ag Verfahren zum abkuehlen und verfluessigen eines tiefsiedenden gases
US4595405A (en) * 1984-12-21 1986-06-17 Air Products And Chemicals, Inc. Process for the generation of gaseous and/or liquid nitrogen
EP0580348A1 (de) * 1992-07-20 1994-01-26 Air Products And Chemicals, Inc. Hybrider Luft und Stickstoff Kreislaufverflüssiger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787560A1 (fr) * 1998-12-22 2000-06-23 Air Liquide Procede de separation cryogenique des gaz de l'air
EP1014020A1 (de) * 1998-12-22 2000-06-28 L'air Liquide S.A. Kryogenisches Luftzerleggungsverfahren
US6257020B1 (en) 1998-12-22 2001-07-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for the cryogenic separation of gases from air
WO2017074544A1 (en) * 2015-10-27 2017-05-04 Praxair Technology, Inc. System and method for providing refrigeration to a cryogenic separation unit
US10295252B2 (en) 2015-10-27 2019-05-21 Praxair Technology, Inc. System and method for providing refrigeration to a cryogenic separation unit

Also Published As

Publication number Publication date
DE69410584T2 (de) 1999-03-04
FR2714721B1 (fr) 1996-02-16
DE69410584D1 (de) 1998-07-02
CN1107571A (zh) 1995-08-30
ES2119115T3 (es) 1998-10-01
FR2714721A1 (fr) 1995-07-07
JPH07324857A (ja) 1995-12-12
CA2139304A1 (fr) 1995-07-01
EP0661505B1 (de) 1998-05-27
US5454226A (en) 1995-10-03

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