FINE PARTICULATE FEED SYSTEM FOR FLUIDIZED BED FURNACE

摘要

FINE PARTICULATE FEED SYSTEM FOR FLUIDIZED BED FURNACE of the Invention A method and apparatus for feeding solids into the bed of a fluidized bed furnace (18). The feed solids are separated into a fine fraction and a coarse fraction. The coarse fraction is supplied to fluidized bed (16) in an in-bed pneumatic transport feed system or in an over-the-bed feed system. The fine fraction as well as fluidizing air are supplied to fines admission zone (24) wherein the fine fraction and fluidizing air are thoroughly mixed. The mixture of the fine fraction of feed solids and the fluidizing air is then passed upwardly through air distribution means (38) into fluidized bed (16).