Furnaces – Process – Burning pulverized fuel
Patent
1982-03-04
1985-05-07
Favors, Edward G.
Furnaces
Process
Burning pulverized fuel
48203, 48210, 110215, 110216, 110234, 110261, 110264, 110265, 110266, 122 22, 431163, 431173, F23D 100
Patent
active
045150931
ABSTRACT:
A method for generating steam by a high pressure, high intensity, or high heat release method of combustion in an elongated combustion zone having upstream and downstream ends and an intermediate location and utilizing a normally-solid fuel which produces non-combustible solid residues in which the fuel is introduced axially and a volume of air, at least equal to the stoichiometric amount, is introduced as an annular, rotating stream to produce a rotating vortex of fuel and air, such introduction and flow through the combustion zone being carried out in a manner to collapse the vortex and create plug flow at the intermediate location, burning the fuel and air to produce flue gas at a heat release rate of at least 7 MM Btu/hr, abruptly terminating combustion by the introduction of water, vaporizing the water to produce a mixture of flue gas and steam, and separating solid residues therefrom.
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Beardmore David H.
Needham Riley B.
Favors Edward G.
Warner Steven E.
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