抄録
To suppress the emission of tar/soot from fluidized bed pyrolyzer, use of porous solids as bed material was proposed instead of non-porous sand. The carbon retention by the bed material was evaluated by use of a bench-scale fluidized bed reactor. Porous alumina particles were effective for carbon retention whereas non-porous sand was not. By feeding gas non-uniformly to enhance the solid internal circulation, the carbon retention by the porous bed material was increased.