Process or apparatus for distilling air and application in feedi

Details Process or apparatus for distilling air and application in feedi Process or apparatus for distilling air and application in feedi

1992-07-31

1994-03-08

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 41, F25J 304

Patent

active

052917371

ABSTRACT:
The apparatus is of the type having a double column and a mixing column. The latter is fed at the bottom portion with auxiliary air that is compressed at a pressure different from that of the mean pressure column, and at the top by means of a liquid withdrawn from the bottom of the low pressure column and pumped at the same pressure as the auxiliary air. Impure oxygen is withdrawn at the top of the mixing column as production gas, and substantially pure oxygen is produced at the bottom of the low pressure column.

REFERENCES:
patent: 4529425 (1985-07-01), McNeil
patent: 4595405 (1986-06-01), Agrawal et al.
patent: 4824453 (1989-04-01), Rottmann et al.
patent: 5079923 (1992-01-01), Grenier
patent: 5144808 (1992-09-01), Ha

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