Cryogenic system for producing ultra-high purity nitrogen

Details Cryogenic system for producing ultra-high purity nitrogen Cryogenic system for producing ultra-high purity nitrogen

1997-10-31

1999-11-16

Capossela, Ronald

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62908, 62909, F25J 100

Patent

active

059836679

ABSTRACT:
A process for further purification of nitrogen gas, thereby producing ultra-high purity nitrogen which is substantially free of hydrogen, oxygen and carbon monoxide, wherein the nitrogen gas is contacted with a metal-containing adsorbent at a temperature of 150 K. or less.

REFERENCES:
patent: 3722226 (1973-03-01), McDermott et al.
patent: 4617040 (1986-10-01), Yoshino
patent: 4713224 (1987-12-01), Tamhankar et al.
patent: 4902321 (1990-02-01), Cheung
patent: 5098457 (1992-03-01), Cheung et al.
patent: 5122175 (1992-06-01), Koyama et al.

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