Fluid bed furnace and fuel supply system for use therein

Details Fluid bed furnace and fuel supply system for use therein Fluid bed furnace and fuel supply system for use therein

1978-11-06

1980-12-30

Ward, Jr., Robert S.

Combustion

Timer, programmer, retarder or condition responsive control

Responsive to combustion chamber pressure

431 7, 431170, 431264, 432 58, 110101CB, F23D 1902, F23Q 300

Patent

active

042420776

ABSTRACT:
A fuel supply system for use in a fluid bed furnace or the like of the type which includes a bed comprising a quantity of particles, which bed fluidizes in response to the flow of heated gases upwardly therethrough and a burner for burning a supplied fuel and providing the fluid bed with a sufficient gas mixture flow at an elevated temperature for heating and fluidizing the fluid bed. The fluid supply system includes a source of air, a source of gas fuel, mixing means coupled to the furnace burner for mixing the air and gas fuel together for providing the burner with a fuel mixture, flow rate control means for providing the air and gas fuel to the mixing means in substantially stoichiometric flow rate proportions and fluid bed level detecting means for sensing the level of the fluidizable material within the fluid bed and coupled to the flow rate control means for varying the flow rates of the gas fuel and air provided to the mixing means in direct relation to the level of the fluidizable material within the fluid bed. As a result, excessive agitation of the fluid bed is avoided.

REFERENCES:
patent: 2147881 (1939-02-01), Chambers
patent: 2178171 (1939-10-01), Hellmann et al.
patent: 2656799 (1953-10-01), Hatton
patent: 3884617 (1975-05-01), Virr
patent: 3903846 (1975-09-01), Elliott et al.
patent: 3938936 (1976-02-01), Vizmeg
patent: 4017269 (1977-04-01), Dutz et al.

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