Nitrogen generator cycle

Details Nitrogen generator cycle Nitrogen generator cycle

1981-10-27

1983-08-23

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 30, 62 31, 62 39, F25J 302

Patent

active

044001886

ABSTRACT:
A process is described in which gaseous nitrogen is recovered from air in a cryogenic air separation unit containing a single distillation column wherein the product nitrogen is compressed and a portion of the compressed nitrogen is recycled to the column to provide reboil in the bottom of said column and reflux at the top of said column. A waste crude oxygen stream is expanded to provide refrigeration for the air separation unit.

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patent: 4222756 (1980-09-01), Thorogood

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