Ultra-high purity nitrogen generator

Details Ultra-high purity nitrogen generator Ultra-high purity nitrogen generator

1994-10-19

1995-11-28

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including solid, extended surface, fluid contact reaction...

62 18, 62 27, 62 34, 422187, B01J 802, F25J 302, F25J 304

Patent

active

054705436

ABSTRACT:
Ultra-high purity nitrogen is generated by feeding feed air to a carbon dioxide eliminator-drier and a primary rectification column, thereby removing catalyst poisons for an oxidation catalyst used for oxidation of carbon monoxide and hydrogen in the feed air by the carbon dioxide eliminator-drier and the primary rectification column. A part of low purity nitrogen gas separated in the primary rectification column is condensed and liquefied by a condenser. The raw nitrogen gas which has not been condensed and liquefied in the condenser is warmed to normal temperature by a heat exchanger and compressed by a recyclic compressor so that the pressure thereof is increased and the temperature thereof is raised. Carbon monoxide and hydrogen are oxidized in an oxidation column and the resulting carbon dioxide and water are removed by an adsorption column.

REFERENCES:
patent: 5058387 (1991-10-01), Kamrath
patent: 5205127 (1993-04-01), Agrawal

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