EP1106945A1 - Verfahren und Vorrichtung zur Luftzerlegung durch Tieftemperaturdestillation - Google Patents

Verfahren und Vorrichtung zur Luftzerlegung durch Tieftemperaturdestillation Download PDF

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Publication number
EP1106945A1
EP1106945A1 EP00403354A EP00403354A EP1106945A1 EP 1106945 A1 EP1106945 A1 EP 1106945A1 EP 00403354 A EP00403354 A EP 00403354A EP 00403354 A EP00403354 A EP 00403354A EP 1106945 A1 EP1106945 A1 EP 1106945A1
Authority
EP
European Patent Office
Prior art keywords
column
liquid
low pressure
pressure column
mixing
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
EP00403354A
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English (en)
French (fr)
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EP1106945B1 (de
Inventor
Jean Renaud Brugerolle
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.)
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 EP1106945A1 publication Critical patent/EP1106945A1/de
Application granted granted Critical
Publication of EP1106945B1 publication Critical patent/EP1106945B1/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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04654—Producing crude argon in a crude argon column
    • F25J3/04709—Producing crude argon in a crude argon column as an auxiliary column system in at least a dual pressure main column system
    • F25J3/04715—The auxiliary column system simultaneously produces oxygen
    • 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
    • F25J3/0446—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 the heat generated by mixing two different phases
    • 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
    • F25J3/0446—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 the heat generated by mixing two different phases
    • F25J3/04466—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 the heat generated by mixing two different phases for producing oxygen as a mixing column overhead gas by mixing gaseous air feed and liquid oxygen
    • 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
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04969—Retrofitting or revamping of an existing air fractionation unit
    • 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
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, 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
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
    • 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
    • F25J2245/50—Processes or apparatus involving steps for recycling of process streams the recycled stream being oxygen
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing streams
    • 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
    • Y10S62/923—Inert gas
    • Y10S62/924—Argon

Definitions

  • the present invention relates to a separation process and installation air by cryogenic distillation.
  • it relates to a method of production of pure oxygen using a mixing column and optionally argon production using an argon column
  • EP-A-0269342 relates to the case in which the argon column is connected thermally with a mixing column so that the overhead gas from the argon column heats the mixing column.
  • US-A-5551258 describes a process in which a mixing column is fed at the head with a liquid containing 55% vol. oxygen, the overhead gas the mixing column then used to heat the tank condenser of the low pressure column.
  • An object of the present invention is to increase the amount of gaseous oxygen pure (containing more than 99.5 mol% of oxygen) which can be produced by a double air separation column.
  • the installation can include an argon column or simply a medium pressure column tank vaporizer by exchange of heat with a gas from the low pressure column.
  • it comprises means for withdrawing the second liquid at a level between the column tank and the withdrawal level of the argon column supply or the low pressure gas withdrawal level used to vaporize the medium pressure column tank liquid.
  • the mixing column can be supplied to the tank by any gas more volatile than liquid oxygen sent to the top of the column.
  • the head gas of the mixing column can be racked at the top of the mixing column or at most five theoretical plates below the top of the mixing column.
  • Figure 1 The installation of Figure 1 comprises a double column 1 comprising a medium pressure column 3 and a low pressure column 5 connected between them by a vaporizer 7.
  • the vaporizer includes liquid vaporization passages and two independent series of heating passages for two different heating gases.
  • the low pressure column operates at between 1.4 and 2.7 bar and the column medium pressure operates at between 5 and 8 bar.
  • the argon column 9 is supplied from a first level of the column low pressure 5. There is also a mixing column 11 which operates at a pressure between 1.9 bar and 3.7 bar.
  • An air flow 13 is sent to column 3 and a blown air flow 14 is sent to column 5.
  • a flow of liquid 15 containing 40 mol%. oxygen is drawn from the medium pressure column tank 3: part 17 of this liquid supplies the low pressure column 5 after expansion in a valve and part 19 of the liquid is expanded to between 1.7 and 2.2 bar absolute in a valve and sent to the overhead condenser 21 of the argon column 9 where it vaporizes at least partially.
  • the vaporized liquid 23 is sent to the tank of the mixing column.
  • the nitrogen at the top of the medium pressure column at least condenses partially in the tank vaporizer 7 and the condensate is sent to the column medium pressure and / or low pressure column.
  • a gas flow 41 containing at least 80 mol% of nitrogen is withdrawn at the head of the medium pressure column as product and constitutes 10 to 15% of supply air.
  • a flow rate of liquid 25 enriched in nitrogen and containing less than 2 mol% oxygen is sent from the medium pressure column to the head of the column low pressure.
  • a liquid flow 27 containing less than 5 mol% of nitrogen is withdrawn in low pressure column tank 5 below the gas withdrawal point 26 intended for the argon column 9.
  • the second liquid is withdrawn from the low pressure column at a level at least 5 theoretical plates below from the injection point of the low pressure column (or from the most bottom), possibly at least 10 theoretical plates below the point injection of the low pressure column (or of the lowest injection point) and / or at a level of around a third of theoretical plates of the low pressure column above the tank of the low pressure column.
  • This liquid is sent after pumping at between 1.9 and 3.7 bar at the top of the mixing column 11.
  • this flow 27 is mixed with the liquid of tank 29 of the argon column before being pressurized and sent to the column of mixed.
  • a gas flow 31 containing at most 5 mol% of nitrogen is sent from the head of the mixing column to the vaporizer 7 where it is condensed in separate passages from those in which the column nitrogen condenses medium pressure to increase the reflux in low pressure column tank.
  • air or another fluid can condense there. less volatile than medium pressure nitrogen, provided that it is condensed in another condenser in the system, normally above the vaporizer.
  • Part of the flow 31 can be used as an oxygen-enriched product.
  • An intermediate liquid 33 from the mixing column containing 80 mol%. oxygen is sent to the low pressure column 5.
  • the tank liquid 35 of the mixing column containing 65 mol%. oxygen is sent to the low pressure column 5.
  • a flow 37 containing beyond 99.5% mol. oxygen is drawn off in the tank of the low pressure column 5 either in gaseous form or under liquid form.
  • the low pressure column is supplied ranging from top to bottom with lean liquid 25 containing less than 1 mol% of oxygen, of the blowing air 14, the non-vaporized rich liquid 45 of the head condenser of the argon column, rich liquid 17, liquid from the tank of the mixing column 35, the intermediate liquid of the mixing column 33 and the recondensed mixture 31 of the vaporizer 7.
  • the low pressure column contains at least 80 theoretical plates and preferably at least 90 theoretical trays.
  • Figure 2 differs from that of Figure 1 in that the column mixing is supplied to the tank exclusively by a flow of air from possibly a turbine or a booster (not shown).
  • the vapor of condenser 21 from the argon column is sent to the low pressure column just below the injection point of the rich liquid 45.
  • the argon column can be deleted entirely or can be reduced to a simple vaporizer of rich liquid heated by a gas from the low pressure column (which amounts to a column argon without theoretical plates of distillation).
  • the argon column and / or the low pressure column can be constructed in two sections as described in EP-A-0628777.
  • the second liquid 27 is withdrawn from the low pressure column at a level at least 5 theoretical plates below the point of injection of the liquid rich 45 from the low pressure column, possibly at least 10 theoretical plates below the injection point of the low pressure column, and / or at a level of around a third of theoretical plates in the low pressure column above the tank of the low pressure column.
  • the second liquid 27 is preferably withdrawn at a level between the low pressure column tank 5 and supply level 26 of the argon column 9, in the case where there is an argon column.
  • medium pressure and low pressure columns can be built side by side.
  • the frigories necessary for the appliance can be supplied by at least an insufflation turbine and / or at least one Claude turbine and / or at least one nitrogen turbine.
  • the device can produce liquids and / or gases.

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)
EP00403354A 1999-12-02 2000-11-30 Verfahren zur Luftzerlegung durch Tieftemperaturdestillation Expired - Lifetime EP1106945B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9915208 1999-12-02
FR9915208A FR2801963B1 (fr) 1999-12-02 1999-12-02 Procede et installation de separation d'air par distillation cryogenique

Publications (2)

Publication Number Publication Date
EP1106945A1 true EP1106945A1 (de) 2001-06-13
EP1106945B1 EP1106945B1 (de) 2005-06-01

Family

ID=9552807

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00403354A Expired - Lifetime EP1106945B1 (de) 1999-12-02 2000-11-30 Verfahren zur Luftzerlegung durch Tieftemperaturdestillation

Country Status (6)

Country Link
US (1) US6385996B2 (de)
EP (1) EP1106945B1 (de)
JP (1) JP2001194058A (de)
AT (1) ATE297001T1 (de)
DE (1) DE60020500T2 (de)
FR (1) FR2801963B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620520A (zh) * 2012-04-09 2012-08-01 开封黄河空分集团有限公司 一种由空气分离制取压力氧气和压力氮气附产液氩的工艺
CN103162512A (zh) * 2013-01-27 2013-06-19 南京瑞柯徕姆环保科技有限公司 一种等压分离制取氧氮的空分装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2854232A1 (fr) * 2003-04-23 2004-10-29 Air Liquide Procede de distillation d'air pour produire de l'argon
JP5655104B2 (ja) 2013-02-26 2015-01-14 大陽日酸株式会社 空気分離方法及び空気分離装置
EP3557166A1 (de) 2018-04-19 2019-10-23 Linde Aktiengesellschaft Verfahren zur tieftemperaturzerlegung von luft und luftzerlegungsanlage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2169561A6 (de) * 1971-02-01 1973-09-07 Air Liquide
US4818262A (en) * 1985-07-15 1989-04-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air distillation process and plant
EP0430803A1 (de) * 1989-11-28 1991-06-05 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Einrichtung zur Luftdestillierung mit Argongewinnung
US5291737A (en) * 1991-08-07 1994-03-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process or apparatus for distilling air and application in feeding gas to a steel mill
US5379599A (en) * 1993-08-23 1995-01-10 The Boc Group, Inc. Pumped liquid oxygen method and apparatus
US5551258A (en) * 1994-12-15 1996-09-03 The Boc Group Plc Air separation
US5865041A (en) * 1998-05-01 1999-02-02 Air Products And Chemicals, Inc. Distillation process using a mixing column to produce at least two oxygen-rich gaseous streams having different oxygen purities

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636845B1 (de) * 1993-04-30 1999-07-28 The BOC Group plc Lufttrennung
US5490391A (en) * 1994-08-25 1996-02-13 The Boc Group, Inc. Method and apparatus for producing oxygen
FR2774159B1 (fr) * 1998-01-23 2000-03-17 Air Liquide Installation combinee d'un four et d'un appareil de distillation d'air et procede de mise en oeuvre
GB9902101D0 (en) * 1999-01-29 1999-03-24 Boc Group Plc Separation of air

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2169561A6 (de) * 1971-02-01 1973-09-07 Air Liquide
US4818262A (en) * 1985-07-15 1989-04-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air distillation process and plant
EP0430803A1 (de) * 1989-11-28 1991-06-05 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Einrichtung zur Luftdestillierung mit Argongewinnung
US5291737A (en) * 1991-08-07 1994-03-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process or apparatus for distilling air and application in feeding gas to a steel mill
US5379599A (en) * 1993-08-23 1995-01-10 The Boc Group, Inc. Pumped liquid oxygen method and apparatus
US5551258A (en) * 1994-12-15 1996-09-03 The Boc Group Plc Air separation
US5865041A (en) * 1998-05-01 1999-02-02 Air Products And Chemicals, Inc. Distillation process using a mixing column to produce at least two oxygen-rich gaseous streams having different oxygen purities

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620520A (zh) * 2012-04-09 2012-08-01 开封黄河空分集团有限公司 一种由空气分离制取压力氧气和压力氮气附产液氩的工艺
CN102620520B (zh) * 2012-04-09 2014-09-17 开封黄河空分集团有限公司 一种由空气分离制取压力氧气和压力氮气附产液氩的工艺
CN103162512A (zh) * 2013-01-27 2013-06-19 南京瑞柯徕姆环保科技有限公司 一种等压分离制取氧氮的空分装置
CN103162512B (zh) * 2013-01-27 2015-06-10 南京瑞柯徕姆环保科技有限公司 一种等压分离制取氧氮的空分装置

Also Published As

Publication number Publication date
FR2801963A1 (fr) 2001-06-08
DE60020500D1 (de) 2005-07-07
US6385996B2 (en) 2002-05-14
FR2801963B1 (fr) 2002-03-29
EP1106945B1 (de) 2005-06-01
ATE297001T1 (de) 2005-06-15
JP2001194058A (ja) 2001-07-17
US20010003909A1 (en) 2001-06-21
DE60020500T2 (de) 2006-03-23

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