Process for the production of high pressure nitrogen with split

Details Process for the production of high pressure nitrogen with split Process for the production of high pressure nitrogen with split

1988-10-06

1989-11-28

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 44, F25J 300

Patent

active

048835196

ABSTRACT:
A process is set forth for recovery of nitrogen from a feed gas stream, containing nitrogen and oxygen, using a cryogenic separation wherein a recycle stream having an oxygen content above, equal to or below that of the feed gas stream is recycled from the cryogenic separation to the feed gas stream with a split reboil-condenser function that would allow variation of the oxygen content of the recycle stream.

REFERENCES:
patent: 4152130 (1979-05-01), Theobald
patent: 4222756 (1980-09-01), Thorogood
patent: 4400188 (1983-08-01), Patel et al.
patent: 4464188 (1984-08-01), Agrawal et al.
patent: 4595405 (1986-06-01), Agrawal et al.
patent: 4705548 (1987-11-01), Agrawal et al.
patent: 4707994 (1987-11-01), Shenoy et al.
Celar et al: "Flexible Process of Pressure Nitrogen and Low Pressure Oxygen Production" Ferox, National Corporation, Decin, Czechoslovakia.

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