Method for cleaning waste gas denitrating catalyst

Details Method for cleaning waste gas denitrating catalyst Method for cleaning waste gas denitrating catalyst

1987-11-24

1989-03-14

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

422178, 4232155, 423239, 502 20, B01J 3804, B01J 3800, B01J 2392, B01D 5336

Patent

active

048124290

ABSTRACT:
In a reaction device in which catalyst layers having vertical passages for a waste gas are arranged, gas rectifying plates are disposed at regular intervals above the catalyst layers and these rectifying plates are each supported by a shaft at the upper portion thereof, moving the lower end portions of the adjacent rectifying plates into contact with each other so as to maintain a V-shape region for a predetermined period of time.
Collecting dust in the waste gas in the V-shape region formed by the rectifying plates and then dropping the dust downwardly onto the catalyst layers intermittently, and thereby cleaning the surfaces of the catalyst layers.

REFERENCES:
patent: 930947 (1909-08-01), Edison
patent: 4572903 (1986-02-01), Hino et al.
patent: 4729975 (1988-03-01), Kobayashi

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