Air separation process with modified single distillation...

Details Air separation process with modified single distillation... Air separation process with modified single distillation...

F - Mech Eng,Light,Heat,Weapons

25

J

162/120

F25J 3/02 (2006.01) F25J 3/04 (2006.01)

Patent

CA 1283846

ABSTRACT The present invention relates to a process to produce large quantities of pure nitrogen and small amounts of high purity oxygen co-product which utilizes a modified single distillation column nitrogen generator. The modification is the addition of a small second column which purifies a portion of the oxygen enriched liquid from the nitrogen generator overhead condenser. Reboiling for the second column is provided by condensing part of the nitrogen overhead from the nitrogen generator. This condensed nitrogen is used as reflux in the nitrogen generator.

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