Method and apparatus for burning pulverized solid fuel

Details Method and apparatus for burning pulverized solid fuel Method and apparatus for burning pulverized solid fuel

1987-06-18

1988-10-11

Favors, Edward G.

Furnaces

Process

Burning pulverized fuel

110264, F23D 100

Patent

active

047762896

ABSTRACT:
A process and apparatus are described with which pulverized coal can be burned with an essentially non-turbulent flame in which the residence time of individual cool particles within the burner flame is generally increased. Pulverized cool is supplied through a plurality of annularly-distributed conduits. A supply of secondary air is passed around the conduits in a manner so as to produce an axial or low turbulent flow of air from the burner with a relatively small amount of the combustion air being swirled to produce a vortex suitable to anchor the burner flame. The pulverized solid fuel is injected to enter both the vortex and flame regions so as to expose a large portion of fuel particles to a low turbulent diffusion flame in which oxygen reaches burning particles primarily by way of a diffusion process.

REFERENCES:
patent: 4223615 (1980-09-01), Breen et al.
patent: 4243375 (1981-01-01), Reed
patent: 4252069 (1981-02-01), McCartney
patent: 4260364 (1981-04-01), Young et al.
patent: 4303386 (1981-12-01), Voorheis et al.

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