EP1134524A3 - Process for producing gaseous nitrogen - Google Patents

Process for producing gaseous nitrogen Download PDF

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Publication number
EP1134524A3
EP1134524A3 EP01105925A EP01105925A EP1134524A3 EP 1134524 A3 EP1134524 A3 EP 1134524A3 EP 01105925 A EP01105925 A EP 01105925A EP 01105925 A EP01105925 A EP 01105925A EP 1134524 A3 EP1134524 A3 EP 1134524A3
Authority
EP
European Patent Office
Prior art keywords
nitrogen
evaporator
condenser
oxygen
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
EP01105925A
Other languages
German (de)
French (fr)
Other versions
EP1134524B1 (en
EP1134524A2 (en
Inventor
Dietrich Dipl.-Ing. Rottmann
Christian Dipl.-Ing. Kunz
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.)
Linde GmbH
Original Assignee
Linde GmbH
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Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP1134524A2 publication Critical patent/EP1134524A2/en
Publication of EP1134524A3 publication Critical patent/EP1134524A3/en
Application granted granted Critical
Publication of EP1134524B1 publication Critical patent/EP1134524B1/en
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
    • F25J3/044—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
    • F25J3/04248—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
    • F25J3/04284—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
    • F25J3/04321—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 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
    • F25J3/04248—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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Treating Waste Gases (AREA)

Abstract

Das Verfahren und die Vorrichtung dienen der Gewinnung von gasförmigem Stickstoff durch Tieftemperaturzerlegung von Luft. Das Destilliersäulensystem weist eine Einzelsäule (4) auf. Einsatzluft (1) wird in einem Luftverdichter verdichtet, in einem Hauptwärmetauscher (2) abgekühlt und der Einzelsäule (4) zugeführt (3). Eine stickstoffreiche Fraktion (5, 7, 8) wird aus dem Destilliersäulensystem abgezogen und mindestens zu einem erstem Teil in einem Kreislaufverdichter (9, 1063) verdichtet. Der erste Teil (12, 13) der stickstoffreichen Fraktion (5, 7, 8) wird stromabwärts des Kreislaufverdichters (9) dem Verflüssigungsraum eines Kondensator-Verdampfers (14) zugeführt und dort unter einem Druck kondensiert, der höher als der Betriebsdruck der Einzelsäule (4) ist. Hierbei wird stickstoffreiche Flüssigkeit (15, 16) gebildet. Eine flüssige sauerstoffangereicherte Fraktion (231) aus dem Destilliersäulensystem wird im Verdampfungsraum des Kondensator-Verdampfers (14) mindestens teilweise verdampft. Aus dem im Verdampfungsraum des Kondensator-Verdampfers (14) gebildeten Dampf (232) wird ein erstes sauerstoffangereichertes Gas (234, 533) erzeugt, in die Einzelsäule (4) eingeleitet und dort als aufsteigender Dampf verwendet. Ein zweiter Teil (19, 20, 1064) der stickstoffreichen Fraktion (5, 7, 8) wird zumindest zeitweise als gasförmiges Stickstoffprodukt abgezogen. Ein zweites sauerstoffangereichertes Gas (221, 521) wird aus dem Verdampfungsraum des Kondensator-Verdampfers (14) entnommen, arbeitsleistend entspannt (23) und im Hauptwärmetauscher (2) angewärmt.

Figure 00000001
The method and the device serve to obtain gaseous nitrogen by low-temperature separation of air. The distillation column system has a single column (4). Feed air (1) is compressed in an air compressor, cooled in a main heat exchanger (2) and fed to the individual column (4) (3). A nitrogen-rich fraction (5, 7, 8) is drawn off from the distillation column system and at least a first part is compressed in a circuit compressor (9, 1063). The first part (12, 13) of the nitrogen-rich fraction (5, 7, 8) is fed downstream of the circuit compressor (9) to the liquefaction chamber of a condenser-evaporator (14) and condensed there under a pressure which is higher than the operating pressure of the individual column ( 4) is. This forms nitrogen-rich liquid (15, 16). A liquid oxygen-enriched fraction (231) from the distillation column system is at least partially evaporated in the evaporation space of the condenser-evaporator (14). A first oxygen-enriched gas (234, 533) is generated from the vapor (232) formed in the vaporization chamber of the condenser-evaporator (14), introduced into the individual column (4) and used there as rising vapor. A second part (19, 20, 1064) of the nitrogen-rich fraction (5, 7, 8) is withdrawn at least temporarily as a gaseous nitrogen product. A second oxygen-enriched gas (221, 521) is removed from the evaporation space of the condenser-evaporator (14), expanded to perform work (23) and heated in the main heat exchanger (2).
Figure 00000001
EP01105925A 2000-03-17 2001-03-09 Process for producing gaseous nitrogen Expired - Lifetime EP1134524B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10013074 2000-03-17
DE10013074A DE10013074A1 (en) 2000-03-17 2000-03-17 Process for recovering gaseous nitrogen by the decomposition of air in a distillation column system comprises removing an oxygen-enriched gas from a condenser-vaporizer, relieving the pressure and heating in a heat exchanger

Publications (3)

Publication Number Publication Date
EP1134524A2 EP1134524A2 (en) 2001-09-19
EP1134524A3 true EP1134524A3 (en) 2002-01-09
EP1134524B1 EP1134524B1 (en) 2005-10-05

Family

ID=7635135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01105925A Expired - Lifetime EP1134524B1 (en) 2000-03-17 2001-03-09 Process for producing gaseous nitrogen

Country Status (4)

Country Link
US (1) US6470707B2 (en)
EP (1) EP1134524B1 (en)
AT (1) ATE306062T1 (en)
DE (2) DE10013074A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10157544A1 (en) * 2001-11-23 2003-06-12 Messer Ags Gmbh Method and device for producing nitrogen from air
US7864163B2 (en) 2006-09-06 2011-01-04 Apple Inc. Portable electronic device, method, and graphical user interface for displaying structured electronic documents
DE102007024168A1 (en) * 2007-05-24 2008-11-27 Linde Ag Method and apparatus for cryogenic air separation
DE102007051183A1 (en) * 2007-10-25 2009-04-30 Linde Aktiengesellschaft Method for cryogenic air separation
DE102007051184A1 (en) * 2007-10-25 2009-04-30 Linde Aktiengesellschaft Method and apparatus for cryogenic air separation
EP2236964B1 (en) * 2009-03-24 2019-11-20 Linde AG Method and device for low-temperature air separation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1392294A (en) * 1971-06-28 1975-04-30 British Oxygen Co Ltd Air separation
US4400188A (en) * 1981-10-27 1983-08-23 Air Products And Chemicals, Inc. Nitrogen generator cycle
DE19623310A1 (en) * 1995-11-21 1996-11-07 Linde Ag Low pressure single column air sepn. plant
EP0816784A1 (en) * 1996-06-26 1998-01-07 Crio & Eng S.r.l. Apparatus for fractionating air, or a mixture of oxygen and nitrogen, for the simultaneous production of nitrogen and oxygen or for the production of nitrogen
FR2767317A1 (en) * 1997-08-14 1999-02-19 Air Liquide PROCESS FOR CONVERTING A FLOW CONTAINING HYDROCARBONS BY PARTIAL OXIDATION
DE10013073A1 (en) * 2000-03-17 2000-10-19 Linde Ag Low temperature separation of air in distillation column system uses integrated heat exchanger system for cooling e.g. air supply by indirect heat exchange during vaporization of first liquid fraction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543395A1 (en) * 1995-11-21 1997-05-22 Linde Ag Double column process and device for the low temperature separation of air
GB9806293D0 (en) * 1998-03-24 1998-05-20 Boc Group Plc Separation of air

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1392294A (en) * 1971-06-28 1975-04-30 British Oxygen Co Ltd Air separation
US4400188A (en) * 1981-10-27 1983-08-23 Air Products And Chemicals, Inc. Nitrogen generator cycle
DE19623310A1 (en) * 1995-11-21 1996-11-07 Linde Ag Low pressure single column air sepn. plant
EP0816784A1 (en) * 1996-06-26 1998-01-07 Crio & Eng S.r.l. Apparatus for fractionating air, or a mixture of oxygen and nitrogen, for the simultaneous production of nitrogen and oxygen or for the production of nitrogen
FR2767317A1 (en) * 1997-08-14 1999-02-19 Air Liquide PROCESS FOR CONVERTING A FLOW CONTAINING HYDROCARBONS BY PARTIAL OXIDATION
DE10013073A1 (en) * 2000-03-17 2000-10-19 Linde Ag Low temperature separation of air in distillation column system uses integrated heat exchanger system for cooling e.g. air supply by indirect heat exchange during vaporization of first liquid fraction

Also Published As

Publication number Publication date
EP1134524B1 (en) 2005-10-05
EP1134524A2 (en) 2001-09-19
US6470707B2 (en) 2002-10-29
ATE306062T1 (en) 2005-10-15
US20010052242A1 (en) 2001-12-20
DE10013074A1 (en) 2001-09-20
DE50107586D1 (en) 2005-11-10

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