Boiler containing denitrator

Details Boiler containing denitrator Boiler containing denitrator

1977-07-14

1979-07-10

Scovronek, Joseph

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

60 3918B, 60 395, 122 4D, 422173, 422183, 423239, B01J 802, C01B 2100

Patent

active

041608054

ABSTRACT:
In a boiler having a plurality of heat exchanger stages such as a superheater, an evaporator and a preheater, disposed in a combustion gas channel between heat exchangers including an optimum catalytic reaction temperature region are a denitration catalyst layer crossing said channel and a reductant feeding device for adding a reductant such as ammonia gas at a point a little short of catalyst layer. The denitration catalyst layer comprises a number of plate-like catalyst bodies whose plate surfaces extend along the direction of flow of gas, and desirably it is honey-comb-shaped. If the boiler is a waste heat boiler, the denitration catalyst layer will be disposed between the superheater and the evaporator.

REFERENCES:
patent: 3053049 (1962-09-01), Blaskowski
patent: 3687115 (1972-08-01), Bell
patent: 3939097 (1976-02-01), Takeoka et al.
patent: 4003711 (1977-01-01), Hishinuma et al.
patent: 4012488 (1977-03-01), Brocoff
patent: 4044102 (1977-08-01), Muraki et al.

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