EP 1063484 A1 20001227 - Process and device for separating a gaseous mixture by cryogenic distillation
Title (en)
Process and device for separating a gaseous mixture by cryogenic distillation
Title (de)
Verfahren und Vorrichtung zur Zerlegung einer Gasmischung durch Tieftemperaturdistillation
Title (fr)
Procédé et installation de séparation d'un mélange gazeux par distillation cryogénique
Publication
Application
Priority
FR 9908011 A 19990623
Abstract (en)
Cryogenic distillation includes supplying a compressed, purified and cooled gas to a distillation column and supplying to a pump a liquid drawn off from the column. A barrier gas used in pump(s) in the distillation system is a gas and/or vapor from outside the system and/or a vaporized liquid drawn off from a column. An Independent claim is included for a cryogenic distillation system as above . Preferred Features: The gas supplied to the plant is air including traces of methane, carbon monoxide or hydrogen. The liquid supplied to the pump is rich in oxygen, nitrogen or argon. On leaving the pump it passes to an exchanger used to cool the gas supplied to the column.
IPC 1-7
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/0426 (2013.01 - EP US); F25J 3/04296 (2013.01 - EP US); F25J 3/04412 (2013.01 - EP US); F25J 3/04866 (2013.01 - EP US); F25J 2235/02 (2013.01 - EP US); F25J 2235/50 (2013.01 - EP US); F25J 2235/52 (2013.01 - EP US); F25J 2245/50 (2013.01 - EP US); F25J 2290/62 (2013.01 - EP US)
Citation (search report)
- [A] US 2711085 A 19550621 - ANDERSON CARL R
- [A] US 5348456 A 19940920 - KUN LESLIE C [US], et al
- [A] US 5460003 A 19951024 - NENOV NENO T [US]
- [A] US 5498007 A 19960312 - KULKARNI SUNIL B [US], et al
- [DA] DATABASE WPI Week 46, Derwent World Patents Index; AN 1977-82321Y, XP002134856, "Separating oxygen and nitrogen from air using apparatus including oxygen liquefying pump"
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1063484 A1 20001227; EP 1063484 B1 20040225; AT E260453 T1 20040315; DE 60008457 D1 20040401; DE 60008457 T2 20041202; ES 2215581 T3 20041016; FR 2795495 A1 20001229; FR 2795495 B1 20010914; US 6311519 B1 20011106
DOCDB simple family (application)
EP 00401767 A 20000621; AT 00401767 T 20000621; DE 60008457 T 20000621; ES 00401767 T 20000621; FR 9908011 A 19990623; US 59964800 A 20000623