EP 0949471 B1 20021218 - Cryogenic air separation plant with two different operation modes
Title (en)
Cryogenic air separation plant with two different operation modes
Title (de)
Luftzerlegungsanlage mit zwei verschiedenen Betriebsmodi
Title (fr)
Unité de séparation de l'air à deux modes de fonctionnement
Publication
Application
Priority
- EP 99106715 A 19990401
- DE 19815885 A 19980408
- EP 98112276 A 19980702
Abstract (en)
[origin: EP0949471A1] Whilst the plant produces gas, the passage of air through a cooling circuit has to be stopped, causing a loss of cooling which is compensated by stored liquid in order to maintain operating efficiency. Hence liquid oxygen (nitrogen or air) is stored in buffer tanks (79,80), compressed and used, in addition to the liquid from the rectification, during periods of high demand. In periods of low demand excess liquid is sent to the buffer tanks. In a combined process the additional cooling is supplied conventionally by air expanded in a turbine (309) driving a load such as a generator.Rectification is carried out in a double, or triple, column system. Air initially supplied by a compressor (30) is compressed further at a station (305) consisting of two compressors in parallel to increase the flexibility of the system.
IPC 1-7
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/04018 (2013.01 - EP US); F25J 3/04024 (2013.01 - EP US); F25J 3/04084 (2013.01 - EP US); F25J 3/0409 (2013.01 - EP US); F25J 3/04145 (2013.01 - EP US); F25J 3/04296 (2013.01 - EP US); F25J 3/04345 (2013.01 - EP US); F25J 3/04418 (2013.01 - EP US); F25J 3/04448 (2013.01 - EP US); F25J 3/04496 (2013.01 - EP US); F25J 3/04509 (2013.01 - EP US); F25J 3/04781 (2013.01 - EP US); F25J 3/04878 (2013.01 - EP US); F25J 3/04957 (2013.01 - EP US); F25J 2200/54 (2013.01 - EP US); F25J 2230/24 (2013.01 - EP US); F25J 2230/40 (2013.01 - EP US); F25J 2235/42 (2013.01 - EP US); F25J 2240/42 (2013.01 - EP US); F25J 2290/62 (2013.01 - EP US); Y10S 62/90 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0949471 A1 19991013; EP 0949471 B1 20021218; AT E230098 T1 20030115; CZ 297724 B6 20070314; CZ 9901213 A3 20010214; DE 19815885 A1 19991014; HU 9900988 D0 19990628; HU P9900988 A2 20030628; PL 191500 B1 20060531; PL 332409 A1 19991011; US 6185960 B1 20010213
DOCDB simple family (application)
EP 99106715 A 19990401; AT 99106715 T 19990401; CZ 121399 A 19990407; DE 19815885 A 19980408; HU P9900988 A 19990408; PL 33240999 A 19990407; US 28822699 A 19990408