EP 0793069 A1 19970903 - Dual purity oxygen generator with reboiler compressor
Title (en)
Dual purity oxygen generator with reboiler compressor
Title (de)
Mit einem Aufkochkompressor versehener Generator für Sauerstoff von zwei Reinheitsgraden
Title (fr)
Générateur d'oxygène à deux degrés de pureté avec compresseur pour le rebouilleur
Publication
Application
Priority
EP 96301423 A 19960301
Abstract (en)
Low and high purity oxygen products are produced by cryogenic distillation of a compressed feed air stream (10) in which a low purity (less than 97%) oxygen product (38) is provided by a conventional low purity column (25) and high purity (more than 97%) oxygen product (36) is provided by rectification in a high purity column (23) of an oxygen-rich stream (35) from the distillation system (15, 25). Boilup (31) of the low purity column (25) is provided by condensation of a suitable first process stream (30) and boilup in the high purity column is provided by condensation of a suitable second process stream (21) at a higher pressure than said first process stream (30). The oxygen rich stream (35) has an oxygen concentration at least equal to that of the feed (26') to the low pressure column (25). <IMAGE>
IPC 1-7
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP)
F25J 3/04084 (2013.01); F25J 3/0409 (2013.01); F25J 3/04103 (2013.01); F25J 3/04206 (2013.01); F25J 3/04296 (2013.01); F25J 3/04303 (2013.01); F25J 3/04418 (2013.01); F25J 3/04709 (2013.01); F25J 2200/32 (2013.01); F25J 2200/34 (2013.01); F25J 2200/54 (2013.01); F25J 2215/52 (2013.01); F25J 2215/54 (2013.01); F25J 2250/40 (2013.01); F25J 2250/50 (2013.01)
Citation (search report)
- [X] GB 1216192 A 19701216 - BRITISH OXYGEN CO LTD [GB]
- [X] EP 0376464 A1 19900704 - BOC GROUP PLC [GB]
- [A] US 5425241 A 19950620 - AGRAWAL RAKESH [US], et al
- [A] EP 0446004 A1 19910911 - AIR PROD & CHEM [US]
- [A] EP 0538117 A1 19930421 - LIQUID AIR ENG CORP [CA]
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0793069 A1 19970903; CN 1167246 A 19971210; ID 16093 A 19970904; JP H102664 A 19980106; KR 970066477 A 19971013; ZA 971656 B 19980623
DOCDB simple family (application)
EP 96301423 A 19960301; CN 97110507 A 19970226; ID 970571 A 19970226; JP 4415097 A 19970227; KR 19970005795 A 19970225; ZA 971656 A 19970226