Abstract: In a fluidized bed thermal reactor. It includes a main housing including a waste inlet, an exhaust gas outlet, an incombustible solids outlets, a base member, a fluidizable medium located on the base member, a plurality of gas inlets in the base member.

Abstract: In a fluidized bed thermal reactor including a main housing including, a waste inlet, an exhaust gas outlet, an incombustible solids outlets, a base member, a fluidizable medium located on the base member, a plurality of gas inlets in the base member whereby a fluidizing medium located on the base member may be fluidized, and the improvement comprising a hollow body of generally triangular cross-section extending across the main housing and dividing the housing into upper and lower zones and having a pair of arcuate deflector surfaces. A gas inlet into the body is provided whereby gas may be fed to the interior of the body. A plurality of openings are provided in the top of the body whereby gas fed to the body through the gas inlets heated in the body may rise upwardly in the upper zone to assist in combustion in that upper zone.