EP 1209431 B1 20040609 - Process and apparatus for the production of nitrogen and oxygen
Title (en)
Process and apparatus for the production of nitrogen and oxygen
Title (de)
Verfahren und Vorrichtung zur Erzeugung von Sauerstoff und Stickstoff
Title (fr)
Procédé et dispositif de production d'oxygène et d'azote
Publication
Application
Priority
DE 10058332 A 20001124
Abstract (en)
[origin: EP1209431A1] Oxygen and nitrogen are produced by using a low temperature air decomposition process in a rectification system having a high pressure column (4) and a low pressure column (5). Process air (1, 3) is fed into the high pressure column, an oxygen-containing liquid fraction (8, 10) is removed from the high pressure column and injected into the low pressure column, and gaseous nitrogen (17) from the low pressure column is partially condensed by indirect heat exchange with a vaporizing coolant. A nitrogen product stream (19) is removed from the high pressure column and the low pressure column and an oxygen product stream (61, 62, 63) is removed as liquid and gas from the low pressure column. The coolant for the head condenser (7) of the low pressure column is formed by an intermediate liquid (15) removed from an intermediate site of the low pressure column. An Independent claim is also included for a device for the low temperature air decomposition. Preferred Features: The intermediate liquid is removed from an intermediate site which lies above the site at which the oxygen-containing liquid fraction from the high pressure column is injected into the low pressure column. Liquid nitrogen is removed from the low pressure column or its head condenser as a liquid nitrogen product.
IPC 1-7
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/04224 (2013.01 - EP US); F25J 3/04357 (2013.01 - EP US); F25J 3/04393 (2013.01 - EP US); F25J 3/04412 (2013.01 - EP US); F25J 2200/54 (2013.01 - EP US); F25J 2200/90 (2013.01 - EP US); F25J 2205/02 (2013.01 - EP US); F25J 2245/42 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1209431 A1 20020529; EP 1209431 B1 20040609; AT E268893 T1 20040615; DE 10058332 A1 20020529; DE 50102525 D1 20040715; US 2002062658 A1 20020530; US 6490884 B2 20021210
DOCDB simple family (application)
EP 01127958 A 20011123; AT 01127958 T 20011123; DE 10058332 A 20001124; DE 50102525 T 20011123; US 99036501 A 20011123