Removal of nitrogen oxides

Details Removal of nitrogen oxides Removal of nitrogen oxides

1979-01-05

1980-07-01

Peters, G. O.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

B01D 5339

Patent

active

042106281

ABSTRACT:
Nitrogen oxides contained in waste gases can be effectively removed from waste gases by a novel process which comprises contacting the waste gases with activated carbon in the presence of gaseous ammonia at a temperature between about 110.degree. C. and about 350.degree. C. to convert the nitrogen oxides to nitrogen. When waste gases containing sulfur oxides together with nitrogen oxides are subjected to this process, both the nitrogen oxides and the sulfur oxides can be simultaneously removed from the waste gases with a high efficiency. The effects of this process can be enhanced by employing a specific element-supporting activated carbon or an oxidized activated carbon.

REFERENCES:
patent: 3008796 (1961-11-01), Anderson
patent: 3502427 (1970-03-01), Johswich
patent: 3778387 (1973-12-01), Urbanic et al.
patent: 3795730 (1974-05-01), Kalvinskas
patent: 3803804 (1974-04-01), Arashi et al.
patent: 3887683 (1975-06-01), Abe et al.
patent: 3895094 (1975-07-01), Carter

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