Device for treating waste gas generated after household garbage incineration and purification method thereof

Abstract

The invention discloses a device for treating waste gas generated after household garbage incineration and a purification method thereof. The device for treating the waste gas generated after household garbage incineration comprises a waste gas primary filtering mechanism, a gas conveying pipeline, a waste gas washing mechanism, a purification and exhaust mechanism and a liquid supply tan. The invention also discloses a purification method for treating waste gas generated after household garbage incineration, wherein the method comprises the steps of primary filtration of waste gas, fine filtration, haze making and spraying, filtration of salt-containing waste gas and dehydration of moisture. According to the device and the method disclosed in the invention, the dust residue filtering plate is arranged in the waste gas channel, large-particle dust residues are preliminarily filtered, waste residues attached to the filtering cotton net are cleaned, the filtering plate is additionally arranged after spraying, salts following waste gas are filtered, and therefore the salts gathered in the filtering plate fall off; the circulation control mechanism is arranged in the waste gas washingmechanism, the circulating speed of the waste gas is controlled; harmful substances such as particles, carbon monoxide and hydrogen chloride contained in the waste gas are fully treated through wasteresidue filtration, acid gas washing, salt-containing waste gas separation and water-gas separation.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a waste gas treatment device after incineration of domestic garbage and a purification method thereof. Background technique [0002] During the incineration process of domestic waste, a large amount of smoke (particulate matter) and acid gas (carbon monoxide, hydrogen chloride, etc.) will be produced. After retrieval of patent number CN109260845A, an environmentally friendly industrial waste gas purification device and waste gas purification method, an environmentally friendly industrial waste gas purification Device, including air intake pipe, air intake primary filter cartridge, primary filter dust assembly, dust collection cylinder, curved air pipe, spray reaction cylinder, liquid supply tank, air pipe with circulating water pump, spray box, suction filter Components, drive components, mounting brackets, direct air pipes, rear filter cart...

AI Technical Summary

Problems solved by technology

[0003] There are the following defects: 1) after a long time of filtering work by the spiral filter screen, the waste residue in the exhaust gas will be attached to the surface of the spiral filter screen, causing the spiral filter screen to effectively remove the large particles of waste residue in the exhaust gas. Filtration, thus affecting the subsequent processing work; 2) In the spray reaction cylinder, denitrification is carried out by spraying alkaline solution on the exhaust gas, in this process, certain salts will be produced, some of which follow the solution to flow to the liquid supply tank to form a salt solution, and some It will follow the airf

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