Heat exchange – With repair or assembly means
Patent
1981-01-21
1984-07-17
Richter, Sheldon J.
Heat exchange
With repair or assembly means
165142, 165178, F28D 712, F28F 906
Patent
active
044600372
ABSTRACT:
A fluidized bed combustor comprises a reactor or a housing which has a windbox distributor plate adjacent the lower end thereof which contains a multiplicity of hole and air discharge nozzles for discharging air and coal into a fluidized bed which is maintained above the distributor plate and below a take-off connection or flue to a cyclone separator in which some of the products of combustion are treated to remove the dust which is returned into the fluidized bed. A windbox is spaced below the fluidized bed and it has a plurality of tubes passing therethrough with the passage of combustion air and fluidizing air which passes through an air space so that fluidizing air is discharged into the reaction chamber fluidized bed at the bottom thereof to maintain the bed in a fluidized condition. A fluid, such as air, is passed through the tubes which extend through the windbox and provide a preheating of the combustion air and into an annular space between telescoped inner and outer tubes which comprise heat exchanger tubes or cooling tubes which extend upwardly through the distributor plate into the fluidized bed. The heat exchanger tubes are advantageously arranged so that they may be exposed in groups within the reactor in a cluster which is arranged within holding rings.
REFERENCES:
patent: 1054926 (1913-03-01), Mantius
patent: 1758582 (1930-05-01), Mott
patent: 1967706 (1934-07-01), Carroll
patent: 2134058 (1938-10-01), Ris
patent: 2225634 (1940-12-01), Houdry
patent: 2280089 (1942-04-01), Houdry
patent: 2665556 (1954-01-01), Otten
patent: 4151874 (1979-05-01), Kaburagi et al.
patent: 4330031 (1982-05-01), Shefsiek
De Feo Angelo
Hosek William
Curtiss-Wright Corporation
Richter Sheldon J.
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