EP 2279385 B1 20120222 - APPARATUS AND METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION
Title (en)
APPARATUS AND METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION
Title (de)
VORRICHTUNG UND VERFAHREN ZUR LUFTTRENNUNG DURCH KRYOGENE DESTILLATION
Title (fr)
APPAREIL ET PROCÉDÉ DE SÉPARATION D'AIR PAR DISTILLATION CRYOGÉNIQUE
Publication
Application
Priority
- FR 2009050625 W 20090408
- FR 0852727 A 20080423
Abstract (en)
[origin: WO2009136081A2] In a method for separating air by cryogenic distillation in a double column comprising a medium-pressure column (20) and a low-pressure column (21), cooled and purified compressed gaseous air (1) is sent to a first level of the medium-pressure column, cooled and purified compressed liquid air (3) is sent to a second level of the medium-pressure column, a liquid (5) enriched in oxygen, krypton and xenon is tapped from the bottom of the medium-pressure column, a liquid (6) is tapped from the medium-pressure column at a level somewhere between the first and second levels, and sent to the low-pressure column, the liquid enriched in oxygen, krypton and xenon is partially vaporized to form an intermediate gas and an intermediate liquid, a first liquid stream (10) rich in oxygen is tapped from the low-pressure column, a second liquid stream (11) rich in oxygen is tapped from the low-pressure column at a level lower than the intermediate level and the intermediate liquid is sent from the vaporizer to the low-pressure column at an intermediate level of the low-pressure column or is mixed with the second oxygen-rich liquid stream.
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/0409 (2013.01 - EP US); F25J 3/04412 (2013.01 - EP US); F25J 3/04745 (2013.01 - EP US); F25J 2200/94 (2013.01 - EP US); F25J 2215/02 (2013.01 - EP US); F25J 2250/40 (2013.01 - EP US); F25J 2250/52 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2930629 A1 20091030; FR 2930629 B1 20100507; AT E546701 T1 20120315; CN 102016470 A 20110413; EP 2279385 A2 20110202; EP 2279385 B1 20120222; JP 2011519010 A 20110630; US 2011041552 A1 20110224; WO 2009136081 A2 20091112; WO 2009136081 A3 20100408; ZA 201007374 B 20110629
DOCDB simple family (application)
FR 0852727 A 20080423; AT 09742279 T 20090408; CN 200980114578 A 20090408; EP 09742279 A 20090408; FR 2009050625 W 20090408; JP 2011505564 A 20090408; US 93764909 A 20090408; ZA 201007374 A 20101014