Coal fired furance

Details Coal fired furance Coal fired furance

1977-12-27

1979-04-24

Sprague, Kenneth W.

Furnaces

With control means responsive to a sensed condition

Feed control

110265, 110347, F23K 100, F23D 100

Patent

active

041506316

ABSTRACT:
A tangentially fired pulverized coal furnace in which the means for introducing fuel and air from the corners operate as independent firing systems at low ratings and contribute to the fireball at higher ratings. The coal flow through a nozzle is deflected radially outwardly at low ratings and allowed to continue essentially straight at high ratings. A surrounding secondary air flow is concentrated at the coal stream and may be varied from a swirling action at low ratings to a parallel flow action at high ratings.

REFERENCES:
patent: 2243909 (1941-06-01), Kruger
patent: 3180289 (1965-04-01), Steinert
patent: 3203463 (1965-08-01), Miller
patent: 3224419 (1965-12-01), Lowenstein et al.
patent: 3934522 (1976-01-01), Booker

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