Fluidized bed unit including an electrical air preheat apparatus

Details Fluidized bed unit including an electrical air preheat apparatus Fluidized bed unit including an electrical air preheat apparatus

1978-03-08

1980-01-15

Sprague, Kenneth W.

Furnaces

Utilizing powdered fuel

122 4D, F23D 1902

Patent

active

041833082

ABSTRACT:
A fluidized bed unit in which a grate is disposed in a housing to divide the housing into an upper chamber and a lower chamber. A bed of particulate material including fuel is supported by the grate and extends in the upper chamber. The lower chamber has an inlet for receiving pressurized air for passing through the lower chamber, the grate, and the bed of particulate material to fluidize the particulate material. An electrical heating unit is provided for preheating the air as it passes through the lower chamber to ignite the fuel material during startup.

REFERENCES:
patent: 2010460 (1935-08-01), McKinley
patent: 2658742 (1953-11-01), Suter et al.
patent: 2810739 (1957-10-01), Lake et al.
patent: 2976853 (1961-03-01), Hunter et al.
patent: 3048153 (1962-08-01), Abrahamsen
patent: 3119378 (1964-01-01), Marshall
patent: 3350915 (1967-11-01), Staffin
patent: 3742874 (1973-07-01), Eff
patent: 3884193 (1975-05-01), Bryers
patent: 3911594 (1975-10-01), McIntire et al.
patent: 4054376 (1977-10-01), Wareham

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