Steam Gasification in Fluidized Bed of a Synthetic Refuse Containing Chlorine with Catalytic Gas Cleaning at High Temperature

A two-stage process to gasify solid wastes containing chlorine is studied. After the fluidized bed steam gasifier there is a secondary bed of calcined dolomite or calcite to crack the tars and polychlorinated toxic substances present in the gas. The state of the 2nd bed, fixed and fluidized, its temperature and its space-time has been studied. Inorganic and organic chlorine conversions, elimination, have been measured. High tar conversions and chlorine capture have been reached but the life of the dolomite or calcite is still short.