Dual feed air pressure nitrogen generator cycle

Details Dual feed air pressure nitrogen generator cycle Dual feed air pressure nitrogen generator cycle

1984-02-21

1985-09-24

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 28, 62 29, 62 31, 62 34, 62 38, F25J 304

Patent

active

045431159

ABSTRACT:
A nitrogen generating air separation system is disclosed having dual air feeds to dual, low and high pressure, distillation columns wherein a reboiler-condenser is mounted overhead of the high pressure column and a vaporizer-condenser is mounted overhead of the low pressure column and preferably a portion of the high pressure air feed is expanded and desuperheated before being introduced into the low pressure column.

REFERENCES:
patent: 4222756 (1980-09-01), Thorogood
patent: 4451275 (1984-05-01), Vines et al.

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