EP 1162423 A3 20020612 - Process and device for argon recovery
Title (en)
Process and device for argon recovery
Title (de)
Verfahren und Vorrichtung zur Gewinnung von Argon
Title (fr)
Procédé et installation de production d'argon
Publication
Application
Priority
DE 10028866 A 20000610
Abstract (en)
[origin: EP1162423A2] A separate rectification of an argon-oxygen mixture using recycled liquid from the crude argon column (10) is carried out in the low pressure column (1). Recovering argon in an air decomposition plant comprises decomposing compressed, pre-purified cooled air in a rectification system equipped with a rectification column and a crude argon column (10). An argon-oxygen mixture formed in a low pressure column (1) of the rectification system having rectifying devices and injected into the crude argon column equipped with rectification devices and a head condenser (14) is decomposed to crude argon head product and a sump liquid. A separate rectification of an argon-oxygen mixture using recycled liquid from the crude argon column (10) is carried out in the low pressure column (1). An Independent claim is also included for an apparatus for recovering argon.
IPC 1-7
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP)
F25J 3/04412 (2013.01); F25J 3/04678 (2013.01); F25J 3/04703 (2013.01); F25J 3/04921 (2013.01); F25J 3/04939 (2013.01); F25J 2235/58 (2013.01); F25J 2240/40 (2013.01)
Citation (search report)
- [XY] US 5339648 A 19940823 - LOCKETT MICHAEL J [US], et al
- [Y] EP 0881445 A1 19981202 - PRAXAIR TECHNOLOGY INC [US]
- [E] EP 1108965 A1 20010620 - AIR PROD & CHEM [US]
- [A] US 6023945 A 20000215 - WONG KENNETH KAI [US], et al
- [A] US 5901574 A 19990511 - ROHDE WILHELM [DE]
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 1162423 A2 20011212; EP 1162423 A3 20020612; DE 10028866 A1 20011220
DOCDB simple family (application)
EP 01113970 A 20010608; DE 10028866 A 20000610