Treatment device for dioxins air pollutants in household garbage incineration flue gas

Abstract

The invention relates to a treatment device for dioxins air pollutants in household garbage incineration flue gas, and belongs to methods for removing organohalogen compounds in flue gas. The treatment device is characterized by being formed by a primary intensified combustion furnace (1), a secondary intensified combustion furnace (2), a silicon nitride porous ceramic filter (3), a countercurrent flow heat exchange waste heat boiler (4), a combined type heat pipe heat exchanger (5), a bag dust collector (6), an acid gas removal system (7), an activated carbon adsorption tower (8) and an induced draft fan (9), all of which are sequentially connected. The treatment device for the dioxins air pollutants in the household garbage incineration flue gas is high in waste heat recovery efficiency and can effectively govern the dioxins air pollutants generated in the household garbage incineration process. All items of the air pollutants are lower than limiting values specified in table 4 of the Standard for Pollution Control on the Municipal Solid Waste Incineration of GB18485-2014. The quantity of the discharged dioxins air pollutants is smaller than or equal to 0.1 ngTEQ / m<3>.

Description

technical field [0001] The invention relates to a treatment device for dioxin-like air pollutants in flue gas from domestic garbage incineration. It belongs to the removal method of organic halogen compounds in flue gas. Background technique [0002] Household garbage refers to the solid waste generated in the daily life of residents and discarded as having no value, mainly including organic matter and inorganic matter. Organic matter includes kitchen waste, paper, plastic, plant leaves, etc., while inorganic matter includes dust, glass, metal, etc. With the development of the economy and the improvement of people's quality of life, the amount of garbage collected has increased year by year, and the content of organic matter in it has continued to increase. [0003] Such a large amount of domestic waste has brought serious pollution to the environment in which people live. Includes air, soil, and water. threat to human health. Recycling and harmless treatment of domesti...

AI Technical Summary

Problems solved by technology

[0007] Dioxins (dioxins) are not produced artificially and have no purpose

Lead to the resynthesis of dioxin-like pollutants, greatly increasing the dioxin-like air pollutants in the flue gas

[0022] 3. A large amount of dust is carried in the flue gas of domestic waste incineration, and the chlorinated organic substances entrained in the dust are not fully burned, and the dioxin precursors produced are absorbed by the flue dust, and pass through the copper during the transportation and treatment of the flue gas. Under the catalysis of transition metals such as , iron and their oxides, dioxin-like pollutants are further generated

waste of heat

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