EP0718576A1 - Verfahren zur Trennung eines Gasgemisches durch kryogene Destillation - Google Patents

Verfahren zur Trennung eines Gasgemisches durch kryogene Destillation Download PDF

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Publication number
EP0718576A1
EP0718576A1 EP95402924A EP95402924A EP0718576A1 EP 0718576 A1 EP0718576 A1 EP 0718576A1 EP 95402924 A EP95402924 A EP 95402924A EP 95402924 A EP95402924 A EP 95402924A EP 0718576 A1 EP0718576 A1 EP 0718576A1
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EP
European Patent Office
Prior art keywords
refrigerant
gas mixture
flow
column
distillation column
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
EP95402924A
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English (en)
French (fr)
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EP0718576B1 (de
Inventor
Philippe Fraysse
Mike De L'isle
Daniel Rousseau
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
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Publication of EP0718576A1 publication Critical patent/EP0718576A1/de
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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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04157—Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
    • 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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • 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
    • F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
    • 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
    • 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
    • F25J3/044—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 single pressure main column system only
    • 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
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
    • F25J3/04787—Heat exchange, e.g. main heat exchange line; Subcooler, external reboiler-condenser
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/72—Refluxing the column with at least a part of the totally 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/42—Nitrogen
    • 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
    • F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream being air
    • 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
    • F25J2245/42—Processes or apparatus involving steps for recycling of process streams the recycled stream being nitrogen

Definitions

  • Climatic conditions are important in the design of air separation devices and, more generally, in cryogenic devices. More particularly, the cooling water of the refrigerants of the various stages of compression of the air compressor can vary according to the climate and even between day and night, significantly in certain countries, so that one can record in these countries have temperature fluctuations on the water of around 15 ° C.
  • the refrigeration unit has the disadvantage of being an expensive investment and of using at least one rotating machine, which is unreliable and consumes energy.
  • US-A-4,375,367 describes a system in which a flow of air to be distilled is cooled before being purified by recycling the air produced by the purification system.
  • a refrigeration unit is essential in this case.
  • EP-A-0.624.765A discloses a system which makes it possible to replace the refrigeration unit with a heat exchange system with a pressurized fluid flow coming from the air separation installation. The use of a cycle fluid to cool the air upstream of the purification system is not described.
  • J-A-54103777 describes the use of a nitrogen flow coming from a distillation column to cool the air to be purified.
  • EP-A-0.505.812 discloses that a flow of air to be purified can be cooled with a flow of purified air, before the expansion thereof.
  • the subject of the invention is a method as described above, characterized in that liquid is produced as final product and at least part of the refrigerant is expanded in an expansion machine before it heat exchange with the unpurified gas mixture.
  • the proposed solution applies to all devices for distilling a gaseous mixture containing oxygen and nitrogen and which, for this, use a refrigeration cycle, for example a gaseous or nitrogen mixture. It is well suited to liquid production devices.
  • the invention applies in particular to small liquid production devices by air distillation which use a nitrogen cycle capable of supplying the air with the necessary supplement of frigories for its refrigeration up to its purification temperature.
  • the invention may consist in installing at the outlet of the final refrigerant of the air compressor an auxiliary exchanger allowing, for example, the heat exchange between the compressed air with a fraction of cycle nitrogen taken at an intermediate level of a main exchanger.
  • the compressed air is thus cooled by the cycle nitrogen which is heated in this auxiliary exchanger, then re-mixed with the rest of the cycle nitrogen which has continued to heat in the main exchanger.
  • the subject of the invention is also an installation for separating a gaseous mixture containing nitrogen and oxygen by cryogenic distillation comprising a compressor, a purification system, a main exchanger, at least one distillation column, means constituting a refrigeration system and an auxiliary exchanger which puts the gas mixture compressed by the compressor in heat exchange relation with a refrigerant coming either from the column or from the supply downstream of the purification system, characterized in that it comprises means for drawing off a liquid product and a machine for expansion to relax at least part of the refrigerant upstream of the auxiliary exchanger.
  • an air flow is compressed to 6 X 10 5 Pa by a compressor 1 and cooled to 40 ° C in a water cooler 3. Then the flow enters the auxiliary exchanger 5 where it cools to 25 ° C by heat exchange with a nitrogen flow rate of 6 X 10 5 Pa.
  • Separator pots (not shown) at the outlet of the refrigerant 3 and of the exchanger 5 allow remove the condensed water from the treated air after cooling.
  • the air is cooled in the main exchanger 9 near its dew point, then sent to a double tank conventional column 11 in which the air is separated into liquid oxygen, residual nitrogen at the pressure of the low pressure column (1.3 ⁇ 10 5 Pa) and gaseous and liquid nitrogen substantially pure at the pressure of the medium pressure column (6 ⁇ 10 5 Pa).
  • the flow rate of substantially pure nitrogen gas is heated in the main exchanger 9 to a temperature of 22 ° C., from which the first flow rate 13A of pure nitrogen is withdrawn by the withdrawal valve 15 before passing into the auxiliary exchanger 5 where it cools the supply air to 25 ° C.
  • the nitrogen of cycle 13A is thus heated to 37 ° C.
  • a second flow of pure gaseous nitrogen 13B continues to heat up in the main exchanger 9 to 35 ° C. and joins the first flow 13A after it has passed through the auxiliary exchanger 5.
  • the combined flows are recompressed to 42 bar in the compressor 21 and cooled in the main exchanger 9.
  • a third flow 13C of pure recompressed nitrogen is expanded in the turbine 23 of 42X 10 5 Pa up to 6 X 10 5 Pa and recycled with the nitrogen gas withdrawn from the column at 6X 10 5 Pa.
  • the compressor 21 is coupled to the turbine 23.
  • the residual nitrogen heats up in the main exchanger 9, is further heated in the electric heater 8 and is used to regenerate one of the beds of adsorbent he 7.
  • the cycle flow withdrawn from the main line 9 can be regulated at an intermediate temperature by slaving the withdrawal valve 15 to the temperature of the air leaving the auxiliary exchanger 5.
  • the water temperature can reach 20-22 ° C. Under these conditions, the compressed air will leave the final refrigerant of the compressor 1 at a temperature in the region of 25 ° C and the valve 15 will be closed.
  • the water temperature can reach 30-32 ° C and the air leaving the final refrigerant of compressor 1 will be at a temperature close to 40 ° C.
  • the cycle nitrogen 13A will then be sent at a sufficient flow rate by sufficient opening of the valve 15 so that the temperature of the air leaving the auxiliary exchanger 5 is close to 25 ° C.
  • the system does not have any refrigeration unit, all the cooling power being supplied by the nitrogen cycle.
  • the system in Figure 2 differs from that in Figure 1 in that the nitrogen cycle is replaced by an air cycle (the gas mixture to be distilled).
  • the equipment remains essentially the same.
  • the air flow is compressed in the compressor 17 to 30 X 10 5 Pa, cooled in the exchanger 19 and recompressed by the compressor 21 to 42 X 10 5 Pa. Then, the air cools in the main exchanger 9.
  • An air flow 13C is drawn off after being partially cooled, the remaining part of the air being therefore liquefied and sent to column 11.
  • the flow rate 13C is expanded to 6 X 10 5 Pa in the turbine 23. A portion of this expanded air is sent to column 11 as a gas supply and the rest of the air is heated in the exchanger 9.
  • a flow 13A of this air is partially heated, withdrawn by the valve 15 and sent to the auxiliary exchanger 5 where it cools all the supply air to 25 ° C.
  • the flow 13A then joins the air to be compressed in the compressor 17.
  • the air flow 13B continues to heat up and joins the supply air downstream of the purification system 7.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP95402924A 1994-12-23 1995-12-22 Verfahren zur Trennung eines Gasgemisches durch kryogene Destillation Expired - Lifetime EP0718576B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9415608A FR2728663B1 (fr) 1994-12-23 1994-12-23 Procede de separation d'un melange gazeux par distillation cryogenique
FR9415608 1994-12-23

Publications (2)

Publication Number Publication Date
EP0718576A1 true EP0718576A1 (de) 1996-06-26
EP0718576B1 EP0718576B1 (de) 1999-09-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402924A Expired - Lifetime EP0718576B1 (de) 1994-12-23 1995-12-22 Verfahren zur Trennung eines Gasgemisches durch kryogene Destillation

Country Status (8)

Country Link
US (1) US5651271A (de)
EP (1) EP0718576B1 (de)
JP (1) JPH08254389A (de)
CN (1) CN1133964A (de)
CA (1) CA2165916A1 (de)
DE (1) DE69511833T2 (de)
ES (1) ES2138172T3 (de)
FR (1) FR2728663B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0829691A1 (de) * 1996-09-13 1998-03-18 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren zur Verdichtung des Einsatzgases einer Trenneinheit für Gasmischungen
EP1035391A1 (de) * 1999-03-12 2000-09-13 L'air Liquide Société Anonyme pour l'étude et l'exploitation des procédés Georges Claude Verfahren und Vorrichtung zur Reinigung und Kryogen-Trennung von Luft ohne Vorkühlung
CN103438665A (zh) * 2013-09-01 2013-12-11 杭州哲达科技股份有限公司 降低空分设备综合电单耗的装置及方法

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19720453A1 (de) * 1997-05-15 1998-11-19 Linde Ag Verfahren und Vorrichtung zur Gewinnung von Stickstoff durch Tieftemperaturzerlegung von Luft
US5806342A (en) * 1997-10-15 1998-09-15 Praxair Technology, Inc. Cryogenic rectification system for producing low purity oxygen and high purity oxygen
US5968234A (en) * 1998-04-14 1999-10-19 Air Products And Chemicals, Inc. Temperature swing adsorption with regeneration by elevated pressure ASU nitrogen-enriched gas
FR2807150B1 (fr) * 2000-04-04 2002-10-18 Air Liquide Procede et appareil de production d'un fluide enrichi en oxygene par distillation cryogenique
US6543253B1 (en) 2002-05-24 2003-04-08 Praxair Technology, Inc. Method for providing refrigeration to a cryogenic rectification plant
US7225637B2 (en) * 2004-12-27 2007-06-05 L'Air Liquide Société Anonyme á´ Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Integrated air compression, cooling, and purification unit and process
CN100441990C (zh) * 2006-08-03 2008-12-10 西安交通大学 利用空分制冷系统的小型天然气液化装置
US8601833B2 (en) * 2007-10-19 2013-12-10 Air Products And Chemicals, Inc. System to cold compress an air stream using natural gas refrigeration
US9546814B2 (en) 2011-03-16 2017-01-17 8 Rivers Capital, Llc Cryogenic air separation method and system
EP2505948B1 (de) 2011-03-30 2018-10-10 General Electric Technology GmbH Kryogene CO2-Trennung mithilfe eines Kühlsystems
FR2976059B1 (fr) * 2011-05-31 2013-05-31 Air Liquide Appareil et procede integre de separation d'un melange de dioxyde de carbone et au moins un autre gaz et de separation d'air par distillation cryogenique
CN102425574A (zh) * 2011-10-20 2012-04-25 河北东明中硅科技有限公司 多晶硅系统制氮制动风机用空气的处理方法
WO2018042336A2 (en) 2016-08-30 2018-03-08 8 Rivers Capital, Llc Cryogenic air separation method for producing oxygen at high pressures
SG11202008918SA (en) * 2018-03-21 2020-10-29 Air Liquide Method and appliance for separating a synthesis gas by cryogenic distillation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54103777A (en) 1978-02-01 1979-08-15 Hitachi Ltd Pretreatment of air separator
US4375367A (en) 1981-04-20 1983-03-01 Air Products And Chemicals, Inc. Lower power, freon refrigeration assisted air separation
EP0456575A1 (de) * 1990-05-09 1991-11-13 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Apparat zur Adsorptionsreinigung von zu destillierender Luft
EP0505812A1 (de) 1991-03-26 1992-09-30 Linde Aktiengesellschaft Verfahren zur Tieftemperaturzerlegung von Luft
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EP0829691A1 (de) * 1996-09-13 1998-03-18 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren zur Verdichtung des Einsatzgases einer Trenneinheit für Gasmischungen
FR2753394A1 (fr) * 1996-09-13 1998-03-20 Air Liquide Procede de compression d'un gaz associe a une unite de separation d'un melange gazeux
US5921106A (en) * 1996-09-13 1999-07-13 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for compressing a gas associated with a unit for separating a gas mixture
EP1035391A1 (de) * 1999-03-12 2000-09-13 L'air Liquide Société Anonyme pour l'étude et l'exploitation des procédés Georges Claude Verfahren und Vorrichtung zur Reinigung und Kryogen-Trennung von Luft ohne Vorkühlung
FR2790823A1 (fr) * 1999-03-12 2000-09-15 Air Liquide Procede et installation de purification et de separation d'air par voie cryogenique sans pre-refroidissement
CN103438665A (zh) * 2013-09-01 2013-12-11 杭州哲达科技股份有限公司 降低空分设备综合电单耗的装置及方法
CN103438665B (zh) * 2013-09-01 2015-06-17 杭州哲达科技股份有限公司 降低空分设备综合电单耗的装置及方法

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FR2728663A1 (fr) 1996-06-28
CN1133964A (zh) 1996-10-23
ES2138172T3 (es) 2000-01-01
US5651271A (en) 1997-07-29
DE69511833D1 (de) 1999-10-07
EP0718576B1 (de) 1999-09-01
FR2728663B1 (fr) 1997-01-24
JPH08254389A (ja) 1996-10-01
CA2165916A1 (fr) 1996-06-24
DE69511833T2 (de) 2000-05-18

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