Treatment method for dioxins atmospheric pollutants in household refuse incineration smoke

Abstract

The invention provides a treatment method for dioxins atmospheric pollutants in household refuse incineration smoke, and belongs to methods for removing organic halogen compounds in smoke. The method is characterized in that a treatment device is formed by sequentially connecting the following equipment of a primary intensified burning furnace (1), a secondary intensified burning furnace (2), a silicon-nitride porous ceramic filter (3), a countercurrent flow waste heat boiler (4), a combined type heat pipe 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). The treatment method for the dioxins atmospheric pollutants in the household refuse incineration smoke is high in waste heat recovery efficiency and capable of effectively treating the dioxins atmospheric pollutants generated in the household refuse incineration process. All items in the atmospheric pollutants are lower than limiting values regulated in the sheet 4 of the GB18485-2014 household refuse incineration pollutant control standard. The emission of the dioxins atmospheric pollutants is not higher than 0.1 ngTEQ / m<3>.

Description

technical field [0001] The invention relates to a method for treating 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 domestic...

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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