Combustion chamber for a fluidized-bed furnace

Details Combustion chamber for a fluidized-bed furnace Combustion chamber for a fluidized-bed furnace

1986-05-21

1988-08-30

Warner, Steven E.

Liquid heaters and vaporizers

Miscellaneous

110206, 110245, 110263, F23C 1102

Patent

active

047668512

ABSTRACT:
A combustion chamber with a fluidized bed furnace having a nozzle plate, a fuel feed above the nozzle plate, a primary air feed below the nozzle plate, an exhaust gas channel at an upper end of the combustion chamber, and heat-exchanging heating surfaces includes a cylindrical combustion chamber wall disposed vertically upright and having, in an upper region thereof, a plurality of secondary air nozzles disposed tangentially as well as downwardly inclined to the cylindrical wall for separating and returning unspent solid particles into a lower region of the fluidized bed, a device for directing a flow of gas and particles vertically upwardly in a central region of the combustion chamber and spirally downwardly along the cylindrical wall, and a device for impressing an upwardly increasing rotary flow about an axis of symmetry of the combustion chamber upon the gas flow.

REFERENCES:
patent: 4060041 (1977-11-01), Sowards
patent: 4295817 (1981-10-01), Caplin et al.
patent: 4337032 (1982-06-01), Duplouy et al.
patent: 4436037 (1984-03-01), Kuo
patent: 4446629 (1984-05-01), Stewart et al.
patent: 4457289 (1984-07-01), Korenberg
patent: 4475472 (1984-10-01), Adrian et al.
"Design and Disposition of the Heating Plant of the Municipal Works Duisburg, AG with Circulating Fluidized-Bed Furnace", W. Wein, VGB-Kraftwerkstechnik, 08-1983.
Patents Abstracts of Japan, vol. 8, No. 154, Jul. 18, 1984.
Patents Abstracts of Japan, vol. 4, No. 111, Aug. 9, 1980.

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