Pneumatic bark distributor for continuous ash discharge stokers

Furnaces – Fuel feeders – Blower

Patent

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Details

110115, 110292, 414174, F23K 318

Patent

active

057945489

ABSTRACT:
A furnace having a continuous ash discharge stoker which includes a fuel distributor apparatus for delivering associated particulate fuel to an associated continuous ash discharge furnace which includes a housing having an inlet for a particulate fuel and an inlet for pressurized air. The housing includes a surface for directing the flow of the associated particulate fuel and an outlet cooperating with the surface through which the associated particulate fuel and air exit the housing. The apparatus includes a nozzle dimensioned and configured to direct pressurized air along a face of the surface to establish a boundary layer between the surface and the associated particulate fuel flowing over the surface. In some forms of the invention the nozzle comprises first and second flat plates disposed in mutually parallel spaced relationship. The first and second flat plates may each be disposed in generally aligned relationship to at least a portion of the surface. In some forms of the invetion the apparatus includes an elongated outlet plate and the surface is on the elongated outlet plate. The outlet plate may be pivotally on an axis that may be proximate to the outlet of the nozzle and may be disposed in spaced parallel relationship to the first and second plates. The outlet plate may have an axially tapered ramp at the end of the outlet plate remote from the nozzle and the axially tapered ramp may have at least portions thereof that are laterally tapered. Some forms of the invention have an inlet for pressurized air that includes a plenum chamber through which incoming air flows before passing through the nozzle.

REFERENCES:
patent: 4326469 (1982-04-01), Reschly

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