VITRIFICATION OF A WASTE MOLTEN SALT BY USING A REACTIVE HEAT SOURCE

摘要

Waste molten salt mainly consisting of metal chlorides is difficult to directly apply to the conventional vitrification process at a high temperature. A reactive inorganic material synthesized by our research group can convert metal chlorides into thermally stable products at a medium temperature and produces a chlorine gas that is not easy to remove from off gas stream. This study shows a novel method to convert a mixture containing inorganic material and molten salt waste into stable products and simultaneously change chlorine to hydrogen chloride gas that is more favorable to treat at off gas system. The reactive heat source can give a heat necessary for desirable reactions and helps the conversion of chlorine gas into hydrochloric acid gas.