Process for continuously regenerating a degraded catalyst used f

Details Process for continuously regenerating a degraded catalyst used f Process for continuously regenerating a degraded catalyst used f

1977-08-16

1979-03-06

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

55 79, 423239, 423244, 252411S, 252418, B01J 2120, B01J 2392, B01J 2394, B01D 5334

Patent

active

041429893

ABSTRACT:
The present invention relates to a continuous type catalyst regeneration process for continuously heating and regenerating a degraded catalyst from a denitration apparatus and recycling the regenerated catalyst to the denitration apparatus for repeated use thereof. In accordance with the present invention, a degraded catalyst is intermittently and by predetermined amounts charged into a heating furnace through a first damper mechanism in a gas-sealed state while the surface level of a catalyst held in the heating furnace is maintained lower than the outlet of catalyst regenerating gas and is therein subjected to heat-treatment at a temperature of 400.degree.-650.degree. C. with catalyst-regenerating gas introduced into the heating furnace. Thus regenerated catalyst is intermittently and by predetermined amounts discharged from the heating furnace toward a second damper mechanism through a catalyst delivery mechanism and recycled to the denitration apparatus.

REFERENCES:
patent: 2305730 (1944-06-01), Degnen et al.
patent: 2549104 (1951-04-01), Lechthaler
patent: 4043939 (1977-08-01), Kassoka
patent: 4044102 (1977-08-01), Muraki et al.
patent: 4061477 (1977-12-01), Murakami
Derwent Pbl. Ltd., 1949, v/11, DE-804-317, Esso Research & Eng. Co., 2/28/74.

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