PNEUMATIC BARK DISTRIBUTOR FOR CONTINUOUS ASH DISCHARGE STOKERS

摘要

A furnace (10) having a continuous ash discharge stoker (12) which includes a fuel distributor apparatus (70) for delivering particulate fuel to the furnace (10) which includes a housing (72) having an inlet (42) for a particulate fuel and an inlet (76) for pressurized air. The housing includes a surface (86) for directing the flow of the 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 (80) dimensioned and configured to direct pressurized air along a face of the surface to establish a boundary layer between the surface and the particulate fuel flowing over the surface. The nozzle comprises first (74) and second (82) flat plates disposed in mutually parallel spaced relationship, and aligned to at least a portion of the surface. Apparatus (70) includes an elongated outlet plate and the surface is on the elongated outlet plate. The outlet plate may pivot on an axis (88) proximate to the outlet of the nozzle, and may have an axially tapered ramp (90) at the end of the outlet plate remote from the nozzle. The inlet for pressurized air may include a plenum chamber (78).