Household garbage treatment process based on rotary kiln

Abstract

The invention relates to the technical field of garbage treatment, in particular to a household garbage treatment process based on a rotary kiln, which comprises an incineration process and a flue gas treatment process. On reasonable temperature control, low-temperature pyrolysis oxidation and secondary high-temperature thorough decomposition are adopted, finally, the waste combustion efficiency reaches 99.9% or above, solid ash generated by combustion continuously, stably and automatically falls down from the tail of the rotary kiln and is automatically discharged through a spiral conveying slag extractor, a traditional secondary combustion chamber is evolved into a secondary combustion furnace, and the energy consumption is reduced. The combustion-off rate of ash and residual solid carbon is increased, the combustion efficiency of the rotary kiln is greatly improved, the use temperature of the secondary combustion chamber is increased through combustion heat energy of combustion-supporting fuel, the secondary combustion chamber is of a vertical design, vortex annular air supply is achieved, the reasonable furnace interior volume ensures that the combustion-off rate of waste residues reaches 99.9% or above, and high temperature is utilized from the source to damage harmful substances such as dioxin.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, in particular to a domestic garbage treatment process based on a rotary kiln. Background technique [0002] During the waste incineration process of the rotary kiln, when there are few combustibles in the waste and a lot of water in the waste, the phenomenon of flameout will occur halfway. Garbage needs to be dried before being incinerated. The methods of drying garbage include: grate furnace superimposed drying method - let the garbage pass above the grate furnace flame to dry the garbage before incineration; flue gas waste heat drying method - use a The residual heat of the flue gas dries up the garbage before incineration; direct drying method - use the fuel flame to heat the perforated iron can with garbage inside to dry the garbage before incineration. The above methods have a common feature: the hot air generated by drying garbage contains a large amount of harmful substances, wh...

AI Technical Summary

Problems solved by technology

The above methods have a common feature: the hot air generated by drying garbage contains a large amount of harmful substances, which require special equipment to deal with these harmful substances, and the harmful substances in the flue gas affect the air quality

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