EP 1338856 A2 20030827 - Process and apparatus for the separation of air by cryogenic distillation
Title (en)
Process and apparatus for the separation of air by cryogenic distillation
Title (de)
Verfahren und Vorrichtung zur Zerlegung von Luft durch Tieftemperaturdestillation
Title (fr)
Procédé et installation pour la séparation d'air par distillation cryogénique
Publication
Application
Priority
- US 35396702 P 20020131
- US 41615202 P 20021004
- US 41600902 P 20021004
Abstract (en)
Nitrogen and/or oxygen are produced by cryogenic distillation of air in an air separation unit comprising at least a medium pressure column (24) and a low pressure column (23) in which air (7,9) is sent to at least the medium pressure column, an oxygen enriched liquid (11) and a nitrogen enriched liquid (12) are removed from the medium pressure column, at least part of the nitrogen enriched liquid (12) is expanded to produce a two phase nitrogen enriched fluid (15), at least part of the expanded nitrogen enriched fluid containing at least 3,5 % gas, preferably at least 4 % gas is sent into the low pressure column and oxygen rich fluid (16) and nitrogen rich fluid (20) are removed from the low pressure column. <IMAGE>
IPC 1-7
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP)
F25J 3/0409 (2013.01); F25J 3/04175 (2013.01); F25J 3/0423 (2013.01); F25J 3/04296 (2013.01); F25J 3/04303 (2013.01); F25J 3/04412 (2013.01); F25J 3/04793 (2013.01); F25J 2235/06 (2013.01); F25J 2245/02 (2013.01); F25J 2245/42 (2013.01); F25J 2290/12 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 03075304 A 20030131