Hazardous waste incineration system and hazardous waste incineration method

Abstract

The invention discloses a hazardous waste incineration system and a hazardous waste incineration method. The hazardous waste incineration system comprises a rotary kiln, a collecting and conveying unit, a plasma melting furnace and a secondary combustion chamber, wherein the rotary kiln is used for incinerating hazardous waste to form residues, the collecting and conveying unit is used for coolingand drying the residues, the plasma melting furnace is used for treating the residues to form glass bodies, and the secondary combustion chamber is used for carrying out secondary fuel treatment on smoke exhausted by the rotary kiln and the plasma melting furnace; and the collecting and conveying unit is connected between a discharging port of the rotary kiln and a feeding port of the plasma melting furnace, an exhaust port of the rotary kiln is connected with the secondary combustion chamber, and an exhaust port of the plasma melting furnace is connected with the secondary combustion chamber. According to the hazardous waste incineration system and the hazardous waste incineration method, the rotary kiln and the plasma melting furnace are combined to treat the hazardous waste, the landfill amount of an incineration project is reduced, land resources are saved, most of the glass bodies generated by the plasma melting furnace can be recycled and used as cement ingredients or building materials or heat preservation materials or craft product materials or the like, and recycling of part of the hazardous waste is achieved.

Description

technical field [0001] The invention relates to the technical field of hazardous waste treatment, in particular to a hazardous waste incineration system and a hazardous waste incineration method. Background technique [0002] According to the definition of the newly revised "National Hazardous Waste List" in 2016, hazardous waste is 1) having one or more hazardous characteristics such as corrosiveness, toxicity, flammability, reactivity or infectivity; 2) not excluding hazardous waste characteristics, may cause harmful effects on the environment or human health, and need to be managed as hazardous waste. Hazardous waste treatment methods mainly include resource recovery and harmless treatment, while incineration is the main method for harmless treatment. At present, the main types of furnaces used for hazardous waste incineration at home and abroad include rotary kiln incinerators, grate furnaces, and liquid injection incinerators. , fluidized bed incinerator, multi-layer b...

AI Technical Summary

Problems solved by technology

Hazardous waste treatment methods mainly include resource recovery and harmless treatment, while incineration is the main method for harmless treatment. At present, the main types of furnaces used for hazardous waste incineration at home and abroad include rotary kiln incinerators, grate furnaces, and liquid injection incinerators. , fluidized bed incinerator, multi-layer bed incinerator and pyrolysis incinerator, etc. The incineration process of hazardous waste is more complicated. The rotary kiln has simple structure, strong adaptability to hazardous waste, stable control, easy operation and mature technology. , long operating history and other advantages are widely used

[0003] At present, domestic rotary kilns are mainly used to incinerate hazardous wastes. Rotary kilns will produce 20% to 25% ash after incineration. This part of ash is still hazardous waste according to regulations and needs to be solidified before entering the landfill. Landfill costs Relatively high, and will take up valuable land resources

Liquid waste in some areas may be clogged due to low ambient temperature in winter before entering the rotary kiln for incineration, posing hidden dangers to operational safety

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