Domestic and foreign research on the application of incineration to deal with hazardous waste has begun, and there are more documented. The current study of hazardous waste research in the toxic and harmful components of the study is mainly focused on medical waste, organic pollutants and heavy metals and so on. Hazardous waste incineration device more types of such devices at home and abroad are roughly divided into 10 categories are single-compartment incinerators, compound incinerators, fixed-bed oxygen-controlled incinerators, mechanical hearth-type incinerators, rotary kiln-type incinerators, liquid injection incinerators, fluidized bed-type incinerators, direct-current arc furnaces, plasma arc furnaces, plasma vaporization furnace. Typical rotary kiln incineration process is generally slightly tilted rotary cylinder lined with refractory bricks for the initial combustion chamber, followed by similar to the exhaust gas cyclone incineration after the combustion chamber. Primary combustion chamber to complete the waste dry bath, pyrolysis, part of the tender burning process (or gasification) process, solid residence time of about 0.8-2h. After combustion chamber is mainly on the primary combustion chamber in the incomplete gas products or other liquid waste treatment. According to its gas and solid flow direction, rotary incinerator can be divided into countercurrent and downstream type. Downstream process is relatively simple, but the countercurrent type is more suitable for high moisture, low flammability of the waste. According to the temperature of the burned-out ash, can be divided into ash and slag type. Ash rotary kiln is usually operated between 650-980 ° C, the kiln solids have not melted; melting clear rotary kiln is operated at 1200-1430 ° C, inorganic components in the waste in addition to high melting point of metal oxides are basically in the kiln melted, the degree of incineration is more complete.
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