EP 0677713 A1 19951018 - Process and installation for the production of oxygen by distillation of air.
Title (en)
Process and installation for the production of oxygen by distillation of air.
Title (de)
Verfahren und Vorrichtung zur Herstellung von Sauerstoff durch Tieftemperaturverlegung von Luft.
Title (fr)
Procédé et installation pour la production de l'oxygène par distillation de l'air.
Publication
Application
Priority
FR 9404298 A 19940412
Abstract (en)
Producing gaseous oxygen under pressure from the cryogenic distn. of air in a double column (5) comprising a medium pressure column (6) and a low pressure column (7), comprises dividing the enriched liq. from the medium pressure column into first and second liq. fractions which are sent to different levels in the low pressure column. These different levels are below the extn. level of impure nitrogen from the low pressure column. The appts. to carry out the above process comprises a double distn. column (medium and low pressure columns), a means for extracting impure nitrogen from the low pressure column, and a means for extracting enriched liq. from the base of the medium pressure column and sending it to two levels in the low pressure column below the nitrogen extn. level. <IMAGE>
Abstract (fr)
Dans un procédé de production d'oxygène sous pression, on fait passer de l'oxygène liquide d'une double colonne (5) dans un échangeur (9) où il se vaporise par échange de chaleur avec de l'air d'alimentation qui s'y condense partiellement. La partie restante de l'air d'alimentation détendue par une turbine (4) sert à maintenir le système en froid. <IMAGE>
IPC 1-7
IPC 8 full level
C01B 13/02 (2006.01); F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/0409 (2013.01 - EP US); F25J 3/04103 (2013.01 - EP US); F25J 3/04206 (2013.01 - EP US); F25J 3/04303 (2013.01 - EP); F25J 3/04412 (2013.01 - EP US); F25J 3/04678 (2013.01 - EP US); F25J 2200/92 (2013.01 - EP US); F25J 2215/58 (2013.01 - US); F25J 2250/40 (2013.01 - EP US); F25J 2250/50 (2013.01 - EP US)
Citation (search report)
- [XA] EP 0454327 A1 19911030 - BOC GROUP PLC [GB]
- [XA] EP 0580348 A1 19940126 - AIR PROD & CHEM [US]
- [A] EP 0357299 A1 19900307 - BOC GROUP PLC [GB]
- [A] US 3214925 A 19651102 - RUDOLF BECKER
- [A] WO 8801037 A1 19880211 - ERICKSON DONALD C [US]
- [A] US 5228296 A 19930720 - HOWARD HENRY E [US]
- [A] FR 1253717 A 19610210 - UNION CARBIDE CORP
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0677713 A1 19951018; EP 0677713 B1 19991020; CA 2146831 A1 19951013; CN 1121172 A 19960424; DE 69512821 D1 19991125; DE 69512821 T2 20000525; FR 2718518 A1 19951013; FR 2718518 B1 19960503; JP H0854181 A 19960227; US 5586451 A 19961224
DOCDB simple family (application)
EP 95400752 A 19950404; CA 2146831 A 19950411; CN 95105136 A 19950411; DE 69512821 T 19950404; FR 9404298 A 19940412; JP 8553995 A 19950411; US 41944195 A 19950410