Treatment device of dioxins atmospheric pollutants in high-temperature flue gas

Abstract

The invention provides a treatment device of dioxins atmospheric pollutants in high-temperature flue gas and belongs to a removal method of organic halogen compounds in flue gas. The treatment device is characterized by comprising the following successively-connected devices: a primary intensification combustion furnace (1), a secondary intensification 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 filter bag dust remover (6), an acid gas removal system (7), an active carbon adsorption tower (8) and an induced draft fan (9). The treatment device of the dioxins atmospheric pollutants in the high-temperature flue gas is high in waste heat recycling efficiency and is capable of effectively treating the dioxins atmospheric pollutants carried in the process of generating and treating the high-temperature flue gas; all the items of the atmospheric pollutants are lower than the limit values specified in table 4 of GB18485-2014 "Control Standards of Household Garbage Incineration Pollutants"; the emission amount of the dioxins atmospheric pollutants is smaller than or equal to 0.1ngTEQ / m<3>.

Description

technical field [0001] The invention is a treatment device for dioxin-like air pollutants in high-temperature flue gas. It belongs to the removal method of organic halogen compounds in flue gas. Background technique [0002] Dioxin has been proven to be one of the most harmful chlorine-containing organic compounds to the human body, among which 2,3,7,8-tetrachlorodibenzodioxin is the most toxic, far stronger than aflatoxin and cyanide. The acute toxicity of potassium cyanide is 100 times stronger than potassium cyanide. Therefore, dioxins have won the title of "the poison of the century". Generally, they enter the human body through the food chain and cannot be degraded or excreted. Dioxins are not only carcinogenic, but also have reproductive toxicity, endocrine toxicity and immunosuppressive effects. [0003] Dioxin-like pollutants mainly pollute soil, water and air through animal food, edible oils and fats, industrial waste water, and waste gas, and then enter animals t...

AI Technical Summary

Problems solved by technology

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

[0012] 3. A large amount of dust is carried in the high-temperature flue gas, and the chlorine-containing organic substances entrained in the dust cannot be fully burned, and the dioxin precursors produced are absorbed by the flue dust, and are passed through copper, 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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