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Treatment method of dioxin-like air pollutants in high temperature flue gas

A technology for atmospheric pollutants and high-temperature flue gas, which is applied in the steam generation method using heat carrier, combined combustion mitigation, lighting and heating equipment, etc. Effect

Active Publication Date: 2018-06-29
SHANDONG JINSHENG NON FERROUS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Treatment method of dioxin-like air pollutants in high temperature flue gas
  • Treatment method of dioxin-like air pollutants in high temperature flue gas
  • Treatment method of dioxin-like air pollutants in high temperature flue gas

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Experimental program
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Effect test

Embodiment 1

[0088] Embodiment 1 A kind of treatment method of dioxin-like air pollutants in high-temperature flue gas

[0089] The processing device is composed of equipment connected in the following order: primary enhanced combustion furnace 1, secondary enhanced combustion furnace 2, silicon nitride porous ceramic filter 3, countercurrent heat exchange waste heat boiler 4, combined heat pipe heat exchanger 5, filter bag Dust collector 6, acid gas removal system 7, activated carbon adsorption tower 8 and induced draft fan 9;

[0090] Described processing method comprises the steps:

[0091] ①. High temperature flue gas enhanced combustion

[0092] The high-temperature flue gas from the domestic waste incinerator first enters the primary intensified combustion furnace 1, and then enters the secondary intensified combustion furnace 2 for intensified combustion; so that the organic combustibles carried in the flue gas continue to fully burn; at the same time, in the raw material combustio...

Embodiment 2

[0113] Example 2 A treatment method for dioxin-like air pollutants in high-temperature flue gas

[0114] The processing device is composed of equipment connected in the following order: primary enhanced combustion furnace 1, secondary enhanced combustion furnace 2, silicon nitride porous ceramic filter 3, countercurrent heat exchange waste heat boiler 4, combined heat pipe heat exchanger 5, filter bag Dust collector 6, acid gas removal system 7, activated carbon adsorption tower 8 and induced draft fan 9;

[0115] Described processing method comprises the steps:

[0116] ①. High temperature flue gas enhanced combustion

[0117] The high-temperature flue gas from the circulating fluidized bed domestic waste incinerator first enters the primary intensified combustion furnace 1, and then enters the secondary intensified combustion furnace 2 for intensified combustion; so that the organic combustibles carried in the flue gas continue to be fully burned; at the same time, in the ...

Embodiment 3

[0138] Example 3 A treatment method for dioxin-like air pollutants in high-temperature flue gas

[0139] The processing device is composed of equipment connected in the following order: primary enhanced combustion furnace 1, secondary enhanced combustion furnace 2, silicon nitride porous ceramic filter 3, countercurrent heat exchange waste heat boiler 4, combined heat pipe heat exchanger 5, filter bag Dust collector 6, acid gas removal system 7, activated carbon adsorption tower 8 and induced draft fan 9;

[0140] Described processing method comprises the steps:

[0141] ①. High temperature flue gas enhanced combustion

[0142] The flue gas from the high-temperature flue gas furnace of the waste printed circuit board incinerator first enters the first-level intensified combustion furnace 1, and then enters the second-level intensified combustion furnace 2 for intensified combustion; so that the organic combustibles carried in the flue gas continue to fully burn; At the same ...

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Abstract

The invention relates to a method for treating dioxin-like air pollutants in high-temperature flue gas. It belongs to the removal method of organic halogen compounds in flue gas. It is characterized in that the processing device is composed of equipment connected in the following order: a primary enhanced combustion furnace (1), a secondary enhanced combustion furnace (2), a silicon nitride porous ceramic filter (3), and a countercurrent heat exchange waste heat boiler (4) , combined heat pipe heat exchanger (5), filter bag filter (6), acid gas removal system (7), activated carbon adsorption tower (8) and induced draft fan (9); provides a waste heat recovery efficiency , and can effectively control the dioxin-like air pollutants in the high-temperature flue gas for the dioxin-like air pollutants carried in the process of high-temperature flue gas generation and treatment. All items of air pollutants are lower than the limits specified in Table 4 of GB18485-2014 "Standards for Control of Pollutants in Domestic Waste Incineration". Among them, the emission of dioxin-like air pollutants is ≤0.1ngTEQ / m3.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/06F23J15/02F22B1/18
CPCY02E20/12
Inventor 吕庆淮王春雨王银川吕瑞新王志信都立珍张德杰
Owner SHANDONG JINSHENG NON FERROUS GRP