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Process and apparatus for air separation by rectification

Assignee: Linde GmbH
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Filing: 1988-07-07
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Granted: —
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Expires: 2008-07-07
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Abstract

Abstract Translated from German Dieses Verfahren dient zur Luftzerlegung durch Rektifikation. Im Anschluß an eine zweistufige Rektifikation 3 wird aus einer Rohargonkolonne 10 eine Fraktion 22 einige Böden oberhalb des Sumpfes entnommen, in eine Reinstsauerstoffkolonne 23 einge­führt und dort in eine Restgasfraktion 24 und in hochreinen Sauerstoff 25,26 zerlegt. Zusätzlich oder alternativ hierzu kann mit Hilfe einer Reinststickstoffkolonne 31, in die stick­stoffreiches Gas 27 aus der ersten Rektifizierstufe 2 einge­speist wird, hochreiner Stickstoff hergestellt werden. Die Sumpffraktion 29 aus der Reinststickstoffkolonne 31 wird in die erste Rektifiziierstufe 2 zurückgeführt, aus der einige Böden unterhalb des Kopfes hochreiner Stickstoff 34 entnommen wird. This process is used for air separation by rectification. Following a two-stage rectification 3, a fraction 22 is removed from a crude argon column 10 some trays above the bottom, introduced into a high-purity oxygen column 23 and broken down there into a residual gas fraction 24 and highly pure oxygen 25, 26. In addition or as an alternative to this, high-purity nitrogen can be produced with the aid of a high-purity nitrogen column 31, into which nitrogen-rich gas 27 from the first rectification stage 2 is fed. The bottom fraction 29 from the high-purity nitrogen column 31 is returned to the first rectification stage 2, from which some trays below the top of highly pure nitrogen 34 are removed.

Inventors

  • 👤 Dietrich Dipl.-Ing. Rottmann
  • 👤 Horst Dipl.-Ing. Corduan

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 06:17
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04248; F25J3/04284; F25J3/0429; F25J3/04303; F25J3/04151; F25J3/04187; F25J3/04193; F25J3/04206; F25J3/04212; F25J3/04406; F25J3/04412; F25J3/04642; F25J3/04648; F25J3/04654; F25J3/04666; F25J3/04672; F25J3/04678; F25J3/04709; F25J3/04715; F25J2200/00; F25J2200/04; F25J2200/06; F25J2200/32; F25J2200/34; F25J2200/90; F25J2200/94; F25J2205/00; F25J2205/02; F25J2215/00; F25J2215/42; F25J2215/44; F25J2215/50; F25J2215/52; F25J2215/56; F25J2220/00; F25J2220/42; F25J2220/50; F25J2250/00; F25J2250/20; F25J2250/30; F25J2250/42; Y; Y10; Y10S; Y10S62/00; Y10S62/923; Y10S62/924

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