Furnace heat absorption control

Details Furnace heat absorption control Furnace heat absorption control

1980-04-28

1982-02-23

Yuen, Henry C.

Furnaces

Process

Burning pulverized fuel

110187, 110190, 236 15E, F23K 100, F23D 100

Patent

active

043164200

ABSTRACT:
Furnace performance is controlled during start-up or very low load operation at a time when the minimum air flow required to be supplied to the furnace is significantly greater than that required to burn the fuel being supplied to the furnace. Decreased furnace heat absorption is accomplished by supplying a larger quantity of the air immediately adjacent the fuel input location for the purpose of diluting the combustion gases and immediately decreasing their temperature level. Increased furnace heat absorption is obtained by introducing a greater portion of the air flow into the furnace at a location remote from the fuel being burned so that the gases at the fuel location remain at a high temperature, and transfer heat to the walls, before being diluted by the incoming air.

REFERENCES:
patent: 1661408 (1928-03-01), Chapman
patent: 1697689 (1929-01-01), Muhlfeld et al.
patent: 3288199 (1966-11-01), Gerrard et al.
patent: 3335782 (1967-08-01), de Livois
patent: 3607117 (1971-09-01), Shaw
patent: 3723047 (1973-03-01), de Livois
patent: 4013023 (1977-03-01), Lombana et al.
patent: 4060378 (1977-11-01), Peredi
patent: 4150631 (1979-04-01), Frey et al.

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