FIELD: power industry.
SUBSTANCE: non-waste thermal processing method of solid public wastes involves drying of the above wastes before they are supplied to melting furnace with gaseous nitrogen heated to 200-300°C with the heat accumulated with liquid-metal heat carrier at cooling of melting furnace housing, their loading at adjustable speed to melting furnace, combustion of organic components in oxygen atmosphere on surface of molten slag obtained from mineral components of waste and added fluxes in melting chamber. Formed gases are supplied via cooled connection pipe to power boiler where their afterburning and heat utilisation of obtained gases is performed. Continuous draining speed of excess slag from the chamber is maintained at the level providing the constant amount of slag available in the chamber. Device for implementation of the above method is described.
EFFECT: avoiding the formation of dioxins and furans due to maintaining reasonable ratio of weight of wastes loaded per unit of time to the weight of molten slag contained in melting furnace; increasing the utilisation degree of heat removed with nitrogen from metal heat carrier in secondary cooling system of melting chamber.
6 cl, 3 dwg, 2 tbl, 4 ex
