Fluidized bed combustor distributor plate assembly

摘要

A fluidized bed combustor having a distributor plate assembly including an inverted frustopyramidal surface with slots and offset shields thereover to form laterally oriented air flow openings into the combustion chamber from a first plenum for debris particle classification along said surface. At the bottom of each frustopyramidal surface is an outlet for classified debris. Air flow riser tubes project up from a second plenum to a position above said surface. Forced air is supplied to the slots and the risers, with means to regulate relative flow to them. Projecting down from the debris outlets are drop tubes having cooling fins, such tubes connecting to inlets of an auger conveyor. The auger conveyor has a coolant-cooled housing and a coolant-cooled auger.