Hazardous waste rotary kiln incineration treatment process

Abstract

The invention discloses a hazardous waste rotary kiln incineration treatment process, and relates to a hazardous waste treatment process. Hazardous waste and a combustion improver are mixed and fed into a rotary kiln through a feeder, the hazardous waste is combusted in the rotary kiln, the hazardous waste is fully combusted along with rotation of the rotary kiln in the combustion process, and meanwhile the hazardous waste gradually slides downwards under the action of the gravity of the hazardous waste; and in the combustion process, pressurized gas is sprayed into the rotary kiln through a pressurizer located at the bottom of the rotary kiln, the pressurized gas contains gas with a certain oxygen concentration so as to meet the combustion requirement in the rotary kiln, then comburent enters a secondary combustion chamber and is further combusted in the secondary combustion chamber, it is guaranteed that the retention time of flue gas in the secondary combustion chamber is not less than 2 seconds, and finally, the flue gas is discharged. The process has the advantages that the removal rate of organic matters is high, the generation of odor and oxynitride can be effectively inhibited, the generated flue gas is free of peculiar smell and stink, and the generation of dioxin is effectively inhibited.

Description

technical field [0001] The invention relates to the technical field of hazardous waste treatment and disposal, in particular to a hazardous waste rotary kiln incineration treatment process. Background technique [0002] With the development of industry, the hazardous waste discharged from industrial production process is increasing day by day. It is estimated that 330 million tons of hazardous waste are generated worldwide each year. Public sensitivity to hazardous waste issues is high in many developed countries due to the high levels of pollution and potentially severe impacts of hazardous waste. Hazardous waste, referred to as hazardous waste, according to the "Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste", hazardous waste refers to hazardous waste that is included in the national list of hazardous waste or identified according to the national hazardous waste identification standards and identification meth...

AI Technical Summary

Problems solved by technology

Chinese Patent Publication No. CN110186056A discloses a hazardous waste incineration treatment method in chemical enterprises. It uses a screw conveyor to send hazardous waste into the rotary kiln incinerator for incineration. The residue falls into the slag hopper from the kiln tail, and the flue gas is led to the The combustion chamber is burned at high temperature again, and the high-temperature flue gas discharged sequentially passes through the water-cooled dust collector, G-G heat exchanger, semi-dry quenching tower, SCR denitrification device, dry reaction device, bag filter, washing adsorption device, mist water separator After the treatment facility, it is discharged at high altitude by induced draft fan. Although it solves the problem of hazardous waste by incineration, it has the problem that the combustion is not ideal during the incineration process, and the hazardous waste is not fully burned during the combustion process, resulting in environmental pollution

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