Refrigeration – Processes – Circulating external gas
Patent
1984-11-15
1986-06-10
Sever, Frank
Refrigeration
Processes
Circulating external gas
62 28, 62 29, 62 31, 62 34, 62 38, F25J 304
Patent
active
045940851
ABSTRACT:
A single column process to produce nitrogen at relatively high purity and yield by the cryogenic rectification of air employing multiple defined feeds to the column to allow for increased product removal off the top of the column while avoiding the need to recycle withdrawn nitrogen.
REFERENCES:
patent: 3518839 (1970-07-01), Becker
patent: 4017276 (1977-04-01), Bloem
patent: 4382366 (1983-05-01), Gaumer
patent: 4400188 (1983-08-01), Patel et al.
patent: 4464188 (1984-08-01), Agrawal et al.
Ktorides Stanley
Sever Frank
Union Carbide Corporation
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