Process for the thermal disposal of halogen compounds, in particular wastes containing chlorine compounds forming dioxins, phosgene and polychlorinated biphenyls and fluidised-bed reactor for carrying it out

摘要

A process for the thermal disposal of wastes containing halogen compounds by reaction in a reactor containing a granular bed material, in which the thermal reaction proceeds in a reactor containing metal oxides of main group II of the periodic table of the elements as bed material. The bed material is formed from pellets containing dolomite or dolomite and other metal oxides, preferably lime, the pellets containing lime and dolomite in an amount up to 50% by weight, based on the lime contained in the mass. The bed material is formed by a mixture of sand and metal oxides of the main group II of the periodic table of the elements, the pellets containing kaolin (Al2O3.2SiO2) in an amount up to 20% by weight, based on the total mass. The bed material can contain a catalyst preferably containing manganese III oxide (Mn2O3). The metal oxides and the additives can be jointly pelletised by ceramic firing to give ceramic bodies, the pellets expediently having a different particle size of 2 and 3 mm. The exhaust gases formed in the incineration are passed through a packing of granules formed from manganese oxide (Mn2O3) or of pellets formed from this material, which expediently contain burnt lime up to a proportion of 50% by weight, preferably between 20 and 50% by weight.