Air separation method and apparatus

Details Air separation method and apparatus Air separation method and apparatus

1996-05-14

1997-11-25

Capossela, Ronald C.

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

F25J 300

Patent

active

056899734

ABSTRACT:
A method an apparatus for separating air in which an oxygen containing vapor stream is removed from a single column nitrogen generator and then divided into two subsidiary streams. The two subsidiary streams are condensed and then combined for stripping within a stripping column to produce ultra-high purity liquid oxygen as a column bottoms. One of the two subsidiary streams is condensed in a reboiler and a bottom region of the stripping column. The other of the two subsidiary streams is condensed within a head condenser used in connection with the nitrogen stripping column.

REFERENCES:
patent: 4617037 (1986-10-01), Okada et al.
patent: 5205127 (1993-04-01), Agrawal
patent: 5385024 (1995-01-01), Roberts et al.

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