Hot-side electrostatic precipitator

Details Hot-side electrostatic precipitator Hot-side electrostatic precipitator

1992-08-20

1994-04-05

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423235, 95 58, B01J 800, C01B 2100, B03C 100

Patent

active

053002709

ABSTRACT:
A hot-side electrostatic precipitator removes particulate matter from a NOX-containing flue gas stream passing therethrough, the exit flue gas stream having a temperature of no less than about 450F. The precipitator contains a plurality of collecting surfaces arranged in a series of fields. At least some of the collecting surfaces carry a catalyst which promotes a reaction between NOX in the flue gas passing therethrough and a nitrogeneous compound. Preferably, a nitrogeneous compound such as ammonia is electrically charged and injected into the flue gas stream prior to its passing over the collecting surfaces coated with catalyst. The hot-side electrostatic precipitator may have catalyst coated onto fixed surfaces near its exit end.

REFERENCES:
patent: 4872887 (1989-10-01), Altman et al.
patent: 5237939 (1993-08-01), Spokoyny et al.

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