Process for catalytically reducing NO contained in a gas

Details Process for catalytically reducing NO contained in a gas Process for catalytically reducing NO contained in a gas

1987-12-03

1989-07-11

Konopka, Paul E.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

4232155, 502 21, 502 24, 502 25, 502 27, 502 41, B01D 5336, B01J 3868, B01J 3702, B01J 2390

Patent

active

048470546

ABSTRACT:
A process of catalytically reducing NO contained in a gas which contains SO.sub.2. The NO is reduced with NH.sub.3, which is admixed to the gas which contains SO.sub.2 and NO. The mixture is supplied to the catalyst at a rate of 0.2 to 20 standard liters per minute and per gram of catalyst and is reacted with the latter in a fluidized bed at a temperature between 185.degree. and 500.degree. C. and under normal pressure. The catalyst has a particle size between 0.1 and 3 mm and is composed of an acid support and an active component, which consists of V.sub.2 O.sub.5, MnO.sub.2, CuO, Fe.sub.2 O.sub.3, NiO and/or Y.sub.2 O.sub.3 and has been applied to the support in a quantity of 0.5 to 20% by weight. It is proposed that part of the catalyst is removed from the fluidized bed and is regenerated and returned to the fluidized bed.

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patent: 4141959 (1979-02-01), Kato et al.
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Katalysatoren, Tenside und Mineralol Additive-p. 33, by-J. Falbe & V. Kasserodt-Georg Thieme Verlag, Stuttgart, 1978.

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