Apparatus for removing nitrogen oxides from a contaminated gas c

Details Apparatus for removing nitrogen oxides from a contaminated gas c Apparatus for removing nitrogen oxides from a contaminated gas c

1974-07-12

1976-06-01

Wolk, Morris O.

Chemistry: physical processes

Physical processes

Crystallization

23284, 23288R, 55233, 55DIG30, 261DIG9, B01J 802

Patent

active

039605078

ABSTRACT:
Apparatus in which a gas such as air, containing nitrogen oxides, is mixed with high temperature steam of 130.degree. to 150.degree.C in a reactor vessel to convert the nitrogen oxides to soluble substances and then dissolve said soluble substances in a liquid absorbent such as warm water or a weak alkaline warm aqueous solution, said liquid absorbent being collected thereafter, so that the nitrogen oxides are separately removed from the gas. The apparatus of the invention has an attainable efficiency of separately removing nitrogen oxides exceeding 95 percent, for gas having the nitrogen oxides content of 100 ppm to 10,000 ppm.

REFERENCES:
patent: 1464845 (1923-08-01), Downs et al.
patent: 2856259 (1958-10-01), Bollinger
patent: 3353799 (1967-11-01), Lions et al.
patent: 3475133 (1969-10-01), Wartenberg
patent: 3495384 (1970-02-01), Alliger
patent: 3696589 (1972-10-01), Liebig et al.
patent: 3706538 (1972-12-01), Chew
patent: 3708958 (1973-01-01), Duty et al.
patent: 3754074 (1973-08-01), Grantham
patent: 3795730 (1974-03-01), Kalvinskas

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