EP0834711A3 - Process and apparatus for the production of high purity nitrogen - Google Patents

Process and apparatus for the production of high purity nitrogen Download PDF

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Publication number
EP0834711A3
EP0834711A3 EP97117183A EP97117183A EP0834711A3 EP 0834711 A3 EP0834711 A3 EP 0834711A3 EP 97117183 A EP97117183 A EP 97117183A EP 97117183 A EP97117183 A EP 97117183A EP 0834711 A3 EP0834711 A3 EP 0834711A3
Authority
EP
European Patent Office
Prior art keywords
column
nitrogen
pressure column
pure nitrogen
fraction
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.)
Withdrawn
Application number
EP97117183A
Other languages
German (de)
French (fr)
Other versions
EP0834711A2 (en
Inventor
Ralph Dipl.-Ing. Spöri
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
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 Linde GmbH filed Critical Linde GmbH
Publication of EP0834711A2 publication Critical patent/EP0834711A2/en
Publication of EP0834711A3 publication Critical patent/EP0834711A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/32—Processes or apparatus using separation by rectification using a side column fed by a stream from the 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/34—Processes or apparatus using separation by rectification using a side column fed by a stream from the low 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
    • 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
    • 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
    • F25J2215/56—Ultra high purity oxygen, i.e. generally more than 99,9% O2

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)

Abstract

Das Verfahren und die Vorrichtung dienen zur Gewinnung von hochreinem Stickstoff durch Tieftemperaturzerlegung von Luft. Gereinigte und verdichtete Luft wird durch Rektifikation in einer aus einer Drucksäule (2) und einer Niederdrucksäule (3) bestehenden Doppelsäule (1) zerlegt. Drucksäule (2) und Niederdrucksäule (3) stehen in Wärmeaustauschbeziehung (4). Eine stickstoffreiche Fraktion (9) aus der Drucksäule (2) wird in eine Reinstickstoffsäule (10) eingeführt. Ein Teil der Kopffraktion der Reinstickstoffsäule wird durch indirekten Wärmeaustausch (11) kondensiert. Am Kopf der Reinstickstoffsäule (10) wird eine leichterflüchtige Komponenten enthaltende Fraktion (12) abgezogen. Mindestens einen theoretischen oder praktischen Boden unterhalb der Stelle, an der die stickstoffreiche Fraktion (9) aus der Drucksäule (2) in die Reinstickstoffsäule (10) eingeführt wird, wird hochreiner Stickstoff (13) als Produkt aus der Reinstickstoffsäule (10) abgezogen.

Figure 00000001
The method and the device serve to obtain high-purity nitrogen by low-temperature separation of air. Purified and compressed air is separated by rectification in a double column (1) consisting of a pressure column (2) and a low pressure column (3). Pressure column (2) and low pressure column (3) are in heat exchange relationship (4). A nitrogen-rich fraction (9) from the pressure column (2) is introduced into a pure nitrogen column (10). Part of the top fraction of the pure nitrogen column is condensed by indirect heat exchange (11). At the top of the pure nitrogen column (10), a more volatile component-containing fraction (12) is drawn off. At least one theoretical or practical base below the point at which the nitrogen-rich fraction (9) from the pressure column (2) is introduced into the pure nitrogen column (10), high-purity nitrogen (13) is withdrawn as a product from the pure nitrogen column (10).
Figure 00000001
EP97117183A 1996-10-02 1997-10-02 Process and apparatus for the production of high purity nitrogen Withdrawn EP0834711A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19640711 1996-10-02
DE1996140711 DE19640711A1 (en) 1996-10-02 1996-10-02 Method and device for obtaining high-purity nitrogen

Publications (2)

Publication Number Publication Date
EP0834711A2 EP0834711A2 (en) 1998-04-08
EP0834711A3 true EP0834711A3 (en) 1998-07-15

Family

ID=7807713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117183A Withdrawn EP0834711A3 (en) 1996-10-02 1997-10-02 Process and apparatus for the production of high purity nitrogen

Country Status (2)

Country Link
EP (1) EP0834711A3 (en)
DE (1) DE19640711A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819263C2 (en) * 1998-04-30 2003-08-21 Linde Ag Process and device for the production of pressurized nitrogen
DE19929798A1 (en) * 1998-11-11 2000-05-25 Linde Ag Production of ultrapure nitrogen includes drawing oxygen-free pressurized nitrogen fraction from an upper portion of the pressure column liquid and releasing in the low pressure column
DE102008037300A1 (en) 2008-08-11 2010-02-25 Robert Brockmann Production of a clean gas, in particular for the leak test on a pressurized component

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079759A (en) * 1961-03-22 1963-03-05 Air Prod & Chem Separation of gaseous mixtures
EP0299364A2 (en) * 1987-07-09 1989-01-18 Linde Aktiengesellschaft Process and apparatus for air separation by rectification
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079759A (en) * 1961-03-22 1963-03-05 Air Prod & Chem Separation of gaseous mixtures
EP0299364A2 (en) * 1987-07-09 1989-01-18 Linde Aktiengesellschaft Process and apparatus for air separation by rectification
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

Also Published As

Publication number Publication date
DE19640711A1 (en) 1998-04-09
EP0834711A2 (en) 1998-04-08

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