EP 1357342 B1 20061102 - Cryogenic triple column air separation system with argon recovery
Title (en)
Cryogenic triple column air separation system with argon recovery
Title (de)
Drei-Säulen-System zur Tieftemperaturzerlegung mit Argongewinnung
Title (fr)
Système de séparation d'air cryogénique à trois colonnes avec production d'argon
Publication
Application
Priority
DE 10217091 A 20020417
Abstract (en)
[origin: EP1357342A1] In a three-sage cryogenic air rectification process for the abstraction of air, the first argon-enriched flow (59, 61) is especially taken from a medium-pressure column (10). A cryogenic gas rectification system has three columns for the extraction of argon from air. The assembly has high (9), medium (10) and low-pressure (11) columns and is linked to a raw argon column (63). The system has an inlet for ambient air which is rectified to separate oxygen and nitrogen. Oxygen or nitrogen (52, 54, 58) is extracted from the low-pressure column. A first flow of argon-enriched gas (59, 61) is abstracted from the nitrogen/oxygen rectification system and surrendered to the raw argon column (63). An argon-rich fraction (75) is drawn from the column (63) and has an argon content greater than that of the first argon-enriched flow (59, 61). The first argon-enriched flow (59, 61) is taken from the medium-pressure column (10).
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP)
F25J 3/0409 (2013.01); F25J 3/04212 (2013.01); F25J 3/0423 (2013.01); F25J 3/04303 (2013.01); F25J 3/04309 (2013.01); F25J 3/04327 (2013.01); F25J 3/04393 (2013.01); F25J 3/04454 (2013.01); F25J 3/04709 (2013.01); F25J 2200/50 (2013.01); F25J 2215/54 (2013.01); F25J 2235/50 (2013.01); F25J 2235/58 (2013.01); F25J 2240/40 (2013.01); F25J 2245/50 (2013.01); F25J 2245/58 (2013.01); F25J 2250/20 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1357342 A1 20031029; EP 1357342 B1 20061102; AT E344428 T1 20061115; DE 10217091 A1 20031106; DE 50208594 D1 20061214
DOCDB simple family (application)
EP 02011458 A 20020524; AT 02011458 T 20020524; DE 10217091 A 20020417; DE 50208594 T 20020524