EP 0316768 B1 19910619 - AIR SEPARATION PROCESS BY LOW TEMPERATURE RECTIFICATION
Title (en)
AIR SEPARATION PROCESS BY LOW TEMPERATURE RECTIFICATION
Publication
Application
Priority
DE 3738559 A 19871113
Abstract (en)
[origin: JPH01239376A] PURPOSE: To ensure actuation particularly excellent in energy by achieving later expansion of a second partial flow in two stages. CONSTITUTION: Work obtained upon a second partial flow being expanded is utilized in later compression of a second partial flow in a first stage. The second partial flow 8 is compressed in two later compression stages 9, 11, and compression heat is removed in later condensers 10, 12. After the second partial flow is further cooled in a heat exchanger 13, a further another partial flow 18 is branched from the second partial flow 8 and is expanded in an expansion apparatus 19, and work obtained thereupon is provided to the later compression stage 9. Part of an expanded side passage flow 18 is introduced into a first stage 21 of a rectifier 20, and the other is returned to a compressor 15 after passage through the heat exchangers 15, 13.
IPC 1-7
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/042 (2013.01 - EP US); F25J 3/04224 (2013.01 - EP US); F25J 3/04278 (2013.01 - EP US); F25J 3/04296 (2013.01 - EP US); F25J 3/04345 (2013.01 - EP US); F25J 3/04357 (2013.01 - EP US); F25J 3/04393 (2013.01 - EP US); F25J 3/04412 (2013.01 - EP US); F25J 2270/90 (2013.01 - EP US); Y10S 62/94 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0316768 A2 19890524; EP 0316768 A3 19890809; EP 0316768 B1 19910619; DE 3738559 A1 19890524; DE 3863345 D1 19910725; JP H01239376 A 19890925; US 4883518 A 19891128
DOCDB simple family (application)
EP 88118753 A 19881110; DE 3738559 A 19871113; DE 3863345 T 19881110; JP 28558588 A 19881111; US 27060688 A 19881114