Process for the reduction of NO.sub.x in fluidized-bed furnaces

Details Process for the reduction of NO.sub.x in fluidized-bed furnaces Process for the reduction of NO.sub.x in fluidized-bed furnaces

1985-03-04

1987-03-10

Favors, Edward G.

Furnaces

Process

Treating fuel constituent or combustion product

110343, F23B 700

Patent

active

046483314

ABSTRACT:
In a process for lowering the NO.sub.x content in combustion waste gases with the use of a reducing agent, the reducing agent has heretofore been added in all cases to the combustion gases downstream of the incineration. According to the invention, it is suggested in a fluidized-bed incineration to introduce the reducing agent into the fluidized bed. It is preferred, in this connection, to admix reducing agent to the utilized fuel and/or to the combustion air and/or to introduce the reducing agent directly into the incineration. Especially preferred reducing agents are NH.sub.3 or nitrogen-containing hydrocarbon compounds. Various additional versions of the feeding operation are possible.

REFERENCES:
patent: 4284015 (1981-08-01), Dickinson
patent: 4388877 (1983-06-01), Molayem et al.
"Schadstoffeinbeindung durch Additiveinblasung um die Flamme", Brennst.-Warme-Kraft, 35 (1983), No. 3, Marz, by M. Y. Chughtai and Michelfelder, Gummersbach, pp. 75-83.

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