Process and apparatus for the separation of air

Details Process and apparatus for the separation of air Process and apparatus for the separation of air

1983-09-27

1984-08-07

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 30, 62 31, 62 39, F25J 302

Patent

active

044641885

ABSTRACT:
A process and apparatus is set forth for the separation of air by cryogenic distillation in a rectification column using two nitrogen recycle streams and a sidestream of the feed air stream to reboil the column. One of the nitrogen recycle streams is expanded to provide refrigeration and to provide power to compress the feed air sidestream.

REFERENCES:
patent: 2627731 (1953-02-01), Benedict
patent: 2982108 (1961-05-01), Grunberg et al.
patent: 3492828 (1970-02-01), Ruckborn
patent: 3736762 (1973-06-01), Toyama et al.
patent: 4222756 (1980-09-01), Thorogood
patent: 4400188 (1983-08-01), Patel

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