Fluidized bed heat exchanger incorporating induced circulation utilizing directional and/or differential bed fluidization

摘要

A fluidized bed heat exchanger in which a perforated plate is disposed within a housing for supporting a bed of particulate material which is introduced into the housing through an inlet. Air is passed through the plate to fluidize the particulate material and a drain pipe is provided for discharging the spent material from the bed. A plurality of nozzles are provided in association with the perforations in the plate for directing air toward the drain pipe to promote the circulation of the bed materials from the inlet to the drain pipe.