Apparatus for low temperature purification of gases

Details Apparatus for low temperature purification of gases Apparatus for low temperature purification of gases

1991-08-15

1993-04-13

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including heat exchanger for reaction chamber or reactants...

422189, 422191, 55 31, 55 33, 55 68, 55 76, 423230, 423247, 423248, 62 11, B01J 804

Patent

active

052020967

ABSTRACT:
Apparatus for producing a substantially pure nitrogen product from a gas stream containing as impurities carbon monoxide, carbon dioxide, water vapor and hydrogen, comprising a first adsorption unit which removes water vapor and carbon dioxide from the gas stream, a catalytic reactor which oxidizes carbon monoxide and hydrogen in the gas stream leaving the first adsorption unit to carbon dioxide and water vapor, respectively, a second adsorption unit which removes water vapor and carbon dioxide from the catalytically treated gas stream, a cryogenic distillation unit which separates nitrogen from oxygen in the gas stream leaving the second adsorption unit and a conduit connecting the cryogenic distillation unit with the adsorption units for purging the adsorption units with waste gas from the cryogenic distillation unit.

REFERENCES:
patent: 3672824 (1972-06-01), Tamura et al.
patent: 4579723 (1986-04-01), Weltmer et al.
patent: 4713226 (1987-12-01), Tamhankar et al.
patent: 4869883 (1989-09-01), Thorogood et al.
patent: 4933158 (1990-06-01), Aritsuka et al.
patent: 4983194 (1991-01-01), Hopkins et al.

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