Small-sized refuse disposal device

Abstract

A small-sized refuse disposal device comprises a refuse thermal pyrolysis gasifier, a secondary combustion chamber, an air preheater, a semi-dry desulfurization system, an activated carbon spray system, a bag-type dust collector and a drying box. Air enters the air preheater from an inlet of the air preheater, and after being heated, the air enters the secondary combustion chamber from an air outlet of the air preheater through a pipeline. A part of high-temperature smoke of the secondary combustion chamber enters the refuse thermal pyrolysis gasifier through a pipeline from a high-temperaturesmoke outlet and enters the drying box through a high-temperature smoke inlet of the drying box to dry refuse. The other part of high-temperature smoke of the secondary combustion chamber enters theair preheater from the high-temperature smoke outlet through a pipeline to heat the air, and then the high-temperature smoke is sequentially processed by the semi-dry desulfurization system, the activated carbon spray system, the bag-type dust collector and the like and then discharged. Since no air is fed into the refuse thermal pyrolysis gasifier and generated combustible gas does not contain N2, the combustion effect of the secondary combustion chamber is optimized. Meanwhile, the refuse thermal pyrolysis gasifier, the drying box and the air preheater utilize heat of the smoke together, andtherefore the heat of the smoke is fully utilized.

Description

technical field [0001] The invention relates to garbage treatment technology, in particular to a small garbage treatment device. Background technique [0002] With the improvement of people's living standards in our country, the output of household garbage in villages and towns has increased significantly. Due to the characteristics of scattered household garbage in villages and towns and small output per unit area, it has brought great difficulties to the treatment of household garbage in villages and towns. The publication numbers are CN201810614759 and CN201720979270, which disclose the related technology of waste pyrolysis gasification furnaces. The known waste pyrolysis gas furnaces must be fed with air, because the air contains nitrogen, resulting in harmful substances such as nitrogen oxides (NOx) during the combustion process. The increase has seriously affected the production and living environment. Contents of the invention [0003] In order to solve the above p...

AI Technical Summary

Problems solved by technology

The present invention proposes a small garbage disposal device. On the one hand, the pyrolysis gasification furnace does not feed air, which reduces the amount of N 2 Absorb heat and make the combustible gas produced without N 2 , which optimizes the combustion effect of the second combustion chamber; on the other hand, the pyrolysis gasifier, together with the drying oven and the air preheater, utilizes the heat of the flue gas, which solves the problem that the heat of the flue gas cannot be fully utilized in the existing technology

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