Apparatus and method for flue gas recirculation in a solid fuel

Details Apparatus and method for flue gas recirculation in a solid fuel Apparatus and method for flue gas recirculation in a solid fuel

1980-06-02

1982-06-22

Favors, Edward G.

Furnaces

With exhaust gas treatment means

Recirculation means

110205, 110207, 110344, 110345, F23B 502

Patent

active

043356605

ABSTRACT:
A solid fuel boiler or furnace with a flue gas-air mixture introduced into the fuel grate is disclosed. The flue gas is mixed with air such that approximately 30% of the mixture is flue gas. By providing this mixture under the burning fuel bed, the temperature of the fuel bed is lowered and excess oxygen is reduced. A more reactive fuel bed results providing various advantages including improved boiler operation and a clinker-free fuel bed.

REFERENCES:
patent: 750786 (1904-01-01), Willard
patent: 1319402 (1919-10-01), McGehee
patent: 1446931 (1923-02-01), Rutherford
patent: 2118625 (1938-05-01), Scholl
patent: 2763221 (1956-09-01), Miller
patent: 4185080 (1980-01-01), Rechmeier
Giammer et al., Experimental Studies on the Feasibility of In-Furnace Control of SO.sub.2 and NO.sub.x Emissions from Industrial Stokers, Battelle Energy, Dec. 15, 1975.

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