Process and apparatus for the production of impure oxygen

Details Process and apparatus for the production of impure oxygen Process and apparatus for the production of impure oxygen

1992-12-14

1995-02-28

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 41, F25J 302

Patent

active

053926099

ABSTRACT:
According to this process: the medium pressure column is operated under a pressure which is higher than six bars and is preferably at least equal to about 9 bars absolute; a first vaporization gas which is less volatile than the nitrogen from the top of the medium pressure column is condensed in the vat condenser of the low pressure column; and nitrogen from the top of the medium pressure column is condensed, it is thereafter sent under reflux to the top of the medium pressure column, at a level of the low pressure column located above said vat condenser application to apparatuses for air distillation with double column associated with a gas turbine.

REFERENCES:
patent: 3210951 (1965-10-01), Gaumer, Jr.
patent: 4372765 (1983-02-01), Tamura et al.
patent: 4448595 (1984-05-01), Cheung
patent: 4453957 (1984-06-01), Pahade et al.
patent: 4704147 (1987-11-01), Kleinberg
patent: 4853015 (1989-08-01), Yoshino
patent: 4936099 (1990-06-01), Woodward et al.
patent: 5006137 (1991-04-01), Agrawal et al.
patent: 5036672 (1991-08-01), Rottmann
patent: 5069699 (1991-12-01), Agrawal

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