NUMERICAL SIMULATION AND EXPERIMENTAL ESTIMATION OF THE TEMPERATURE-CAPACITY REGIME OF THE SHAFT PLASMA FURNACE FOR HARD SOLID WASTE PROCESSING UNDER HIGH TEMPERATURE

The most reliable stabilization of hard combustible or noncombustible toxic and radioactive waste for their further dispocal is obtained by means of high temperature treatment accompanied by the production of forms stable in chemical, thermal and radiation aspects, i.e. glasses, ceramics. The use of low temperature plasma is advantageous to get high stable waste forms. To study this way of processing in the thermal plasma a plasma shaft furnace was developed and realized. A package of theoretical and experimental studies has been carried out. It was shown that the technique of waste processing in the plasma shaft furnace is characterized by a sharp mode of temperature distribution with plasma gas flow and in case of radioactive waste - by a considerable reduction of radionuclide entrainment with exhaust gases.