Multi-fuel feeder distributor

F - Mech Eng,Light,Heat,Weapons – 23 – N

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110/26

F23N 1/02 (2006.01)

Patent

CA 1158101

MULTI-FUEL FEEDER DISTRIBUTOR ABSTRACT OF THE DISCLOSURE A multi-fuel feeder distributor for a stoker capable of feeding into a furnace and distributing over a grate or hearth, coal and a second fuel, such as wood or a waste fuel, either in combina- tion or separately, comprising a coal feed and a second fuel feed having outlet spouts discharging into a single feed throat into the furnace. Coal is fed from a coal hopper at a continuous controlled rate to a distributor portion of the coal feeder which mechanically throws the coal into the furnace and distributes it evenly over the entire grate surface. The second feeder, an air swept waste fuel feeder, may be used at the same time to feed waste fuel in combina- tion with the coal without interfering with the operation of the coal feed. Water-cooling is used at the feed throat along the furnace wall. The waste fuel feeder further comprises: a counterbalanced damper extending across the feed chute of the feeder to aid in distributing the fuel across the width of the chute and serve as a back draft damper to prevent blow back from the furnace, with the added capability of being locked in a position to form a narrow venturi throat to feed fine fuels; an air discharge slot at the discharge point to improve distribution of the fuel; and a rotary damper to provide varying air flow having an additional side damper to allow for variable minimum air flow when the rotary damper is in a position of minimum air flow.

399055

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