Air boiling process to produce low purity oxygen

Details Air boiling process to produce low purity oxygen Air boiling process to produce low purity oxygen

1981-12-24

1983-10-18

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 31, 62 34, 62 43, F25J 302

Patent

active

044103433

ABSTRACT:
Low purity oxygen is produced by a process which employs a low pressure column and a medium pressure column, wherein the bottoms of the low pressure column are reboiled against condensing air and the resulting condensed air is fed into both the medium pressure and the low pressure column.

REFERENCES:
patent: 2209748 (1940-07-01), Schlitt
patent: 2664719 (1954-01-01), Rice et al.
patent: 2779174 (1957-01-01), Vesque
patent: 2812645 (1957-11-01), Locklair et al.
patent: 2850880 (1958-09-01), Jakob
patent: 3327489 (1967-06-01), Gaumer
patent: 4208199 (1980-06-01), Nakazato et al.
patent: 4254629 (1981-03-01), Olszewski

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