EP0611936A1 - Verfahren und Anlage zur Herstellung von ultrareinem Stickstoff durch Luftdestillation - Google Patents

Verfahren und Anlage zur Herstellung von ultrareinem Stickstoff durch Luftdestillation Download PDF

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Publication number
EP0611936A1
EP0611936A1 EP94400257A EP94400257A EP0611936A1 EP 0611936 A1 EP0611936 A1 EP 0611936A1 EP 94400257 A EP94400257 A EP 94400257A EP 94400257 A EP94400257 A EP 94400257A EP 0611936 A1 EP0611936 A1 EP 0611936A1
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EP
European Patent Office
Prior art keywords
column
nitrogen
vaporizer
tank
condenser
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
EP94400257A
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English (en)
French (fr)
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EP0611936B1 (de
Inventor
Pascal Arriulou
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
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Publication of EP0611936A1 publication Critical patent/EP0611936A1/de
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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
    • 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
    • F25J3/04781—Pressure changing devices, e.g. for compression, expansion, liquid pumping
    • 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
    • F25J3/04351—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
    • 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
    • F25J3/0443—A main column system not otherwise provided, e.g. a modified double column flowsheet
    • 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
    • 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
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • F25J2200/52—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column in the high pressure column of a double pressure main column system
    • 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
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • F25J2200/54—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column in the low pressure column of a double pressure main column system
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/10—Hydrogen
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/42—Nitrogen or special cases, e.g. multiple or low purity N2
    • F25J2215/44—Ultra high purity nitrogen, i.e. generally less than 1 ppb impurities
    • 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
    • F25J2240/02—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream
    • F25J2240/10—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream the fluid 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
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/40—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval
    • F25J2240/42—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval the fluid 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
    • F25J2245/40—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
    • 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
    • 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
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/42—One fluid being 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/50—One fluid being oxygen
    • 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 invention aims to add a degree of freedom to the process by allowing the reflux rates of the two columns to be adjusted independently, in particular in order to reduce the size of the second column, and therefore the corresponding investment.
  • the subject of the invention is a process of the aforementioned type, characterized in that a second flow of nitrogen from the high pressure cycle is condensed by vaporization of tank liquid from the first column.
  • the invention also relates to an installation intended for the implementation of such a method.
  • This installation of the type comprising a double distillation column which itself comprises a first nitrogen / oxygen separation column supplied by the air to be treated, and a second nitrogen / hydrogen separation column, the head of which is coupled to the the first column by a vaporizer-condenser and which comprises a tank vaporizer, and a nitrogen refrigeration cycle the high pressure part of which feeds the tank vaporizer of the second column and then this second column itself, is characterized in that it further comprises means for condensing high pressure cycle nitrogen by vaporization of tank liquid from the first column.
  • the installation represented in FIG. 1 essentially comprises an atmospheric air compressor 1, an apparatus 2 for purifying the air of water and CO2 by adsorption, a heat exchange line 3, a turbine 4 for expansion of d air, a double distillation column 5, itself consisting of a column 6 of oxygen / nitrogen separation and a column 7 of nitrogen / hydrogen separation, and a sub-cooler 8.
  • Column 6 comprises a head condenser 9 and a tank vaporizer 10, which also serves as a head condenser for column 7.
  • the latter is also equipped with a tank vaporizer 11.
  • the installation also includes a nitrogen refrigeration cycle 12, the cycle compressor of which is indicated at 13.
  • the air to be treated, compressed at 1 and purified at 2 is cooled at 3 to an intermediate temperature T.
  • T the air to be treated, compressed at 1 and purified at 2
  • the air to be treated is cooled at 3 to an intermediate temperature T.
  • T the air to be treated, compressed at 1 and purified at 2
  • a bypass 15 of the turbine 4, equipped with an expansion valve 16 makes it possible to adjust the cooling power thus produced.
  • the resulting gas LRV (liquid rich vaporized) is then warmed to room temperature in 3 and then discharged from the installation, as waste gas, via a line 18.
  • liquid from the bottom of the column 7 is also, after sub-cooling at 8 and expansion in an expansion valve 22, introduced at the top of the column 6.
  • the air is separated in column 6 into a liquid rich in oxygen and in cycle nitrogen, and part of the cycle nitrogen is purified into hydrogen in column 7.
  • the separated hydrogen is evacuated from the vaporizer-condenser 10 via a vent 23 provided in its condensation passages of the head gas of the column 7.
  • ultra-pure nitrogen for example at a hydrogen concentration of less than 10 ⁇ 9 (1 ppb), which is collected in the tank of column 7, and a production rate of Ultra-pure gaseous nitrogen is drawn off at the bottom of this column via a line 24, warmed to ambient temperature at 3 and recovered via a production line 25.
  • ordinary purity nitrogen for example at a hydrogen concentration of the order of ppm (10 ⁇ 6)
  • a line 26 pricked just upstream of the cycle compressor 13 and / or at the high pressure of the cycle via a pipe 27 pricked just downstream of this compressor.
  • the invention is particularly advantageous when the ultra-pure nitrogen to be produced represents only a fraction of the total nitrogen production of the installation.

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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)
EP94400257A 1993-02-09 1994-02-07 Verfahren und Anlage zur Herstellung von ultrareinem Stickstoff durch Luftdestillation Expired - Lifetime EP0611936B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9301403 1993-02-09
FR9301403A FR2701313B1 (fr) 1993-02-09 1993-02-09 Procédé et installation de production d'azote ultra-pur par distillation d'air.

Publications (2)

Publication Number Publication Date
EP0611936A1 true EP0611936A1 (de) 1994-08-24
EP0611936B1 EP0611936B1 (de) 1997-05-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400257A Expired - Lifetime EP0611936B1 (de) 1993-02-09 1994-02-07 Verfahren und Anlage zur Herstellung von ultrareinem Stickstoff durch Luftdestillation

Country Status (6)

Country Link
US (1) US5440885A (de)
EP (1) EP0611936B1 (de)
JP (1) JPH06241651A (de)
CA (1) CA2115129A1 (de)
DE (1) DE69403103T2 (de)
FR (1) FR2701313B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0701099A1 (de) * 1994-09-12 1996-03-13 Liquid Air Engineering Corporation Verfahren und Anlage zur Herstellung von hochreinem Stickstoff
EP0877219A2 (de) * 1997-04-29 1998-11-11 Air Products And Chemicals, Inc. Verfahren zur Herstellung von Stickstoff unter Verwendung einer Doppeltkolonne und drei Verdampfer-Kondensoren
EP0902245A1 (de) * 1997-09-09 1999-03-17 Praxair Technology, Inc. Tieftemperatur Luftzerlegungsverfahren
EP3438587A1 (de) * 2017-08-03 2019-02-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Gerät und verfahren zur trennung von luft durch kryogene destillation
FR3069913A1 (fr) * 2017-08-03 2019-02-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Appareil et procede de separation d'air par distillation cryogenique

Families Citing this family (11)

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US5208534A (en) * 1989-08-09 1993-05-04 Kabushiki Kaisha Toshiba Magnetic resonance imaging system
US5611219A (en) * 1996-03-19 1997-03-18 Praxair Technology, Inc. Air boiling cryogenic rectification system with staged feed air condensation
US5678425A (en) * 1996-06-07 1997-10-21 Air Products And Chemicals, Inc. Method and apparatus for producing liquid products from air in various proportions
FR2764681B1 (fr) * 1997-06-13 1999-07-16 Air Liquide Procede et installation de separation d'air par distillation cryogenique
US5799510A (en) * 1997-07-30 1998-09-01 The Boc Group, Inc. Multi-column system and method for producing pressurized liquid product
GB9724787D0 (en) 1997-11-24 1998-01-21 Boc Group Plc Production of nitrogen
US20150168056A1 (en) * 2013-12-17 2015-06-18 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method For Producing Pressurized Gaseous Oxygen Through The Cryogenic Separation Of Air
EP3312533A1 (de) * 2016-10-18 2018-04-25 Linde Aktiengesellschaft Verfahren zur luftzerlegung und luftzerlegungsanlage
WO2022053173A1 (de) * 2020-09-08 2022-03-17 Linde Gmbh Verfahren und anlage zur tieftemperaturzerlegung von luft
CN114183997B (zh) * 2021-11-22 2023-03-24 四川空分设备(集团)有限责任公司 一种制取低压氮气的装置及方法
CN114165988B (zh) * 2021-11-22 2023-01-31 四川空分设备(集团)有限责任公司 低压氮制取装置及方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384688A2 (de) * 1989-02-24 1990-08-29 The BOC Group plc Lufttrennung
US5123947A (en) * 1991-01-03 1992-06-23 Air Products And Chemicals, Inc. Cryogenic process for the separation of air to produce ultra high purity nitrogen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662918A (en) * 1986-05-30 1987-05-05 Air Products And Chemicals, Inc. Air separation process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384688A2 (de) * 1989-02-24 1990-08-29 The BOC Group plc Lufttrennung
US5123947A (en) * 1991-01-03 1992-06-23 Air Products And Chemicals, Inc. Cryogenic process for the separation of air to produce ultra high purity nitrogen

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0701099A1 (de) * 1994-09-12 1996-03-13 Liquid Air Engineering Corporation Verfahren und Anlage zur Herstellung von hochreinem Stickstoff
EP0877219A2 (de) * 1997-04-29 1998-11-11 Air Products And Chemicals, Inc. Verfahren zur Herstellung von Stickstoff unter Verwendung einer Doppeltkolonne und drei Verdampfer-Kondensoren
EP0877219A3 (de) * 1997-04-29 1999-02-10 Air Products And Chemicals, Inc. Verfahren zur Herstellung von Stickstoff unter Verwendung einer Doppeltkolonne und drei Verdampfer-Kondensoren
EP0902245A1 (de) * 1997-09-09 1999-03-17 Praxair Technology, Inc. Tieftemperatur Luftzerlegungsverfahren
EP3438587A1 (de) * 2017-08-03 2019-02-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Gerät und verfahren zur trennung von luft durch kryogene destillation
FR3069913A1 (fr) * 2017-08-03 2019-02-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Appareil et procede de separation d'air par distillation cryogenique
CN109387033A (zh) * 2017-08-03 2019-02-26 乔治洛德方法研究和开发液化空气有限公司 用于通过低温蒸馏来分离空气的方法和装置
US10794630B2 (en) 2017-08-03 2020-10-06 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and device for separating air by cryogenic distillation
US10866024B2 (en) 2017-08-03 2020-12-15 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Device and method for separating air by cryogenic distillation
CN109387033B (zh) * 2017-08-03 2021-12-14 乔治洛德方法研究和开发液化空气有限公司 用于通过低温蒸馏来分离空气的方法和装置

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CA2115129A1 (fr) 1994-08-10
FR2701313B1 (fr) 1995-03-31
DE69403103T2 (de) 1997-10-16
DE69403103D1 (de) 1997-06-19
US5440885A (en) 1995-08-15
EP0611936B1 (de) 1997-05-14
JPH06241651A (ja) 1994-09-02
FR2701313A1 (fr) 1994-08-12

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