Global Patent Index - EP 2235460 A2

EP 2235460 A2 20101006 - Process and device for the cryogenic separation of air

Title (en)

Process and device for the cryogenic separation of air

Title (de)

VERFAHREN UND VORRICHTUNG ZUR TIEFTEMPERATUR-LUFTZERLEGUNG

Title (fr)

Procédé et installation pour la séparation cryogénique d'air

Publication

EP 2235460 A2 20101006 (DE)

Application

EP 09706751 A 20090123

Priority

  • EP 2009000431 W 20090123
  • DE 102008006431 A 20080128
  • EP 08009400 A 20080619
  • EP 09706751 A 20090123

Abstract (en)

[origin: WO2009095188A2] The invention relates to a method and a device used for the low-temperature separation of air in a distillation column system, comprising at least one high-pressure column (11) and a low-pressure column (12). The method has a high pre-liquifaction of 30% or more. Feed air is introduced into the distillation column system. The distillation column system further has a pre-column (10), the operating pressure of which is higher than the operating pressure of the high-pressure column (11). A first partial stream (1) of the feed air is introduced into the pre-column (10). The pre-column (10) has a head condenser (14), which is configured as a condenser-evaporator having a condensation chamber and an evaporation chamber. A gaseous fraction (30, 31) from the upper region of the pre-column (10) is introduced into the condensation chamber of the head condenser (14). Fluid (6) formed in the condensation chamber is at least partially applied to the pre-column (10) as runback (7). A second partial stream (2a; 2b) of the feed air is introduced into the evaporation chamber of the head condenser (14).

IPC 8 full level

F25J 3/04 (2006.01)

CPC (source: EP KR US)

F25J 3/00 (2013.01 - KR); F25J 3/04 (2013.01 - KR); F25J 3/0403 (2013.01 - KR); F25J 3/04084 (2013.01 - EP US); F25J 3/0409 (2013.01 - EP US); F25J 3/04175 (2013.01 - EP US); F25J 3/04296 (2013.01 - EP US); F25J 3/04303 (2013.01 - EP US); F25J 3/04375 (2013.01 - EP US); F25J 3/04393 (2013.01 - EP US); F25J 3/04442 (2013.01 - EP US); F25J 3/04709 (2013.01 - EP US); F25J 3/04872 (2013.01 - EP US); F25J 3/04878 (2013.01 - EP US); F25J 2205/04 (2013.01 - EP US); F25J 2240/40 (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

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

WO 2009095188 A2 20090806; WO 2009095188 A3 20100610; CN 101925790 A 20101222; CN 101925790 B 20151021; EP 2235460 A2 20101006; EP 2235460 B1 20180620; JP 2011511246 A 20110407; JP 5425100 B2 20140226; KR 101541742 B1 20150804; KR 20100107042 A 20101004; PL 2235460 T3 20181231; US 2011023540 A1 20110203; US 8826692 B2 20140909

DOCDB simple family (application)

EP 2009000431 W 20090123; CN 200980103353 A 20090123; EP 09706751 A 20090123; JP 2010544624 A 20090123; KR 20107017673 A 20090123; PL 09706751 T 20090123; US 86424909 A 20090123