Method and means for feeding fuel into fluidized-bed combustion

Details Method and means for feeding fuel into fluidized-bed combustion Method and means for feeding fuel into fluidized-bed combustion

1979-07-31

1981-08-18

Yeung, James C.

Combustion

Process of combustion or burner operation

In a porous body or bed, e.g., surface combustion, etc.

431144, 422139, 422143, 432 15, 432 58, F23D 1902

Patent

active

042844010

ABSTRACT:
A bed of solid particles on an air distributor of a fluidized-bed furnace is fluidized by upward currents of air fed through the distributor. A fuel to be burnt in the fluidized bed is premixed with carrying air, and the fuel-air mixture is fed into the bed from a burner extending upwardly through the distributor. For utmost combustion efficiency the ratio by mass of the feed rate of the fuel-carrying air to the sum of the feed rates of the fuel-carrying air and the bed-fluidizing air is adjusted by flow control valves so as to be in the range of from about 0.2 to 0.6. The head of the burner is of such construction that the fuel-air mixture is ejected therefrom in the form of swirling jets. The burner head is usually located about 50 millimeters above the distributor.

REFERENCES:
patent: 3277582 (1966-10-01), Munro et al.
patent: 4165040 (1979-08-01), Beacham et al.

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