EP 0430803 B1 19940302 - Process and installation for air distillation with argon production.
Title (en)
Process and installation for air distillation with argon production.
Title (de)
Verfahren und Einrichtung zur Luftdestillierung mit Argongewinnung.
Title (fr)
Procédé et installation de distillation d'air avec production d'argon.
Publication
Application
Priority
FR 8915626 A 19891128
Abstract (en)
[origin: EP0430803A1] Upper rich liquid (LR2) drawn off at an intermediate point of the intermediate-pressure column (4) is decompressed and sent as reflux to the low-pressure column (5). The lower rich liquid (LR1) drawn off at the vessel of the intermediate-pressure column (4) and less rich in argon than the preceding one, is employed at least partly to form a residual gas of the plant, for example after remixing in a column section (3) with impure nitrogen drawn off at the head of the low-pressure column. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F25J 3/0423 (2013.01 - EP); F25J 3/04254 (2013.01 - EP US); F25J 3/0446 (2013.01 - EP US); F25J 3/04678 (2013.01 - EP US); F25J 2200/04 (2013.01 - EP US); F25J 2200/06 (2013.01 - EP US); F25J 2200/90 (2013.01 - US); F25J 2200/94 (2013.01 - EP); F25J 2210/42 (2013.01 - EP US); F25J 2250/20 (2013.01 - EP US); F25J 2250/50 (2013.01 - EP); F25J 2250/52 (2013.01 - EP); Y10S 62/924 (2013.01 - EP US)
Citation (examination)
WO 87/00609
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0430803 A1 19910605; EP 0430803 B1 19940302; CA 2030771 A1 19910529; DE 69007032 D1 19940407; DE 69007032 T2 19940601; ES 2049953 T3 19940501; FR 2655137 A1 19910531; FR 2655137 B1 19921016; JP H03181776 A 19910807; US 5079923 A 19920114
DOCDB simple family (application)
EP 90403373 A 19901128; CA 2030771 A 19901123; DE 69007032 T 19901128; ES 90403373 T 19901128; FR 8915626 A 19891128; JP 32137490 A 19901127; US 61284390 A 19901114