Method of selective catalytic purification of waste gases from n

Details Method of selective catalytic purification of waste gases from n Method of selective catalytic purification of waste gases from n

1977-02-16

1977-11-01

Peters, G. O.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

B01D 5300

Patent

active

040566005

ABSTRACT:
The method of selective catalytic purification of waste gases from nitrogen oxides consists in that the waste gas to be treated is passed, together with gaseous ammonia, through the bed of a catalyst at a temperature of 100.degree.-500.degree. C, a volumetric velocity of the waste gas of 5000 - 100000 hour.sup.-1 and a volumetric ratio of ammonia to nitrogen oxides of 0.7 - 1.5. The catalyst used in the proposed method is actually oxides of vanadium and of manganese that are taken in the weight ratio V.sub.2 O.sub.5 /Mn.sub.2 O.sub.3 of 0.1 - 30, the total quantity of the metal oxides being from 5 to 40 percent with respect to the total weight of the catalyst.

REFERENCES:
patent: 3279884 (1966-10-01), Nonnenmacher et al.
patent: 3864451 (1975-02-01), Lee et al.
patent: 3887683 (1975-06-01), Abe et al.
patent: 4010238 (1977-03-01), Shiraishi et al.

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