8-24. Volatile matter retention by porous bed material during pyrolysis of biomass and plastics

Abstract

To suppress the emission of tar/soot from fluidized bed gasification or pyrolysis of biomass or plastics, 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 and a fixed bed reactor. The effect of temperature and type of porous bed material were evaluated. Also the burning rate of carbon deposit over the porous bed material was measured.