Abstract: A fluidized bed reactor having a furnace strip-air system and method for reducing heat content and increasing combustion efficiency of drained furnace solids in which a bed of particulate material is supported in a furnace section. A portion of the bed receives a greater amount of fluidizing gas to increase the stoichiometric conditions in the bed portion, strip relatively fine material from the particulate material in the bed portion and increase the amount of heat transferred to the flue gases. A cooler is located adjacent the furnace section for receiving particulate material from the bed portion.

Abstract: A fluidized bed reactor in which a sealing section is located within the reactor and adjacent a furnace section located in the reactor. A fluidized bed is formed in the furnace section and the sealing section. A mixture of flue gases and entrained particulate materials from the fluidized bed in the furnace section are separated and the separated particulate material is passed to the fluidized bed in the sealing section. When bed materials in the fluidized bed in the sealing section exceed a predetermined volume they are passed to the fluidized bed in the furnace.

Abstract: A fluidized bed system in which a plate is disposed in an enclosure and is adapted to support particulate material. A plurality of nozzles are supported by the plate for receiving air and directing the air through the plate and into the particulate material to fluidize same. Each of the nozzles comprises a vertical portion extending upwardly from the plate for receiving air from the plenum and a horizontal portion extending below the upper portion of the vertical portion for discharging the air.