Method and apparatus for producing elevated pressure nitrogen

Details Method and apparatus for producing elevated pressure nitrogen Method and apparatus for producing elevated pressure nitrogen

1991-01-22

1992-03-24

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 33, 62 41, F25J 302

Patent

active

050984578

ABSTRACT:
A method and apparatus for producing elevated pressure nitrogen with improved recovery comprising a primary column and a lower pressure auxiliary column wherein auxiliary column top vapor is condensed, pressurized and passed into the primary column.

REFERENCES:
patent: 4006001 (1977-02-01), Schonpflug
patent: 4222756 (1980-09-01), Thorogood
patent: 4439220 (1984-03-01), Olszewski et al.
patent: 4448595 (1984-05-01), Cheung
patent: 4453957 (1984-06-01), Pahade et al.
patent: 4595405 (1986-06-01), Perawal et al.
patent: 4717410 (1988-01-01), Grenier
patent: 4822395 (1989-04-01), Cheung

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