Flue gas pollutant treatment system and treatment method and chimney

A pollutant treatment and pollutant technology, which is applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of poor removal effect of low-concentration pollutants, achieve the effect of improving the treatment effect and solving the effect of air pollution

Inactive Publication Date: 2018-06-12
苏跃进
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a flue gas pollutant treatment system to enhance the heat transfer of the chimney, improve the ability of the water vapor in the chimney to condense to form droplets, and solve the current problem of poor removal of low-concentration pollutants in the flue gas; in addition , the object of the present invention is also to provide a method for treating flue gas pollutants and a chimney

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  • Flue gas pollutant treatment system and treatment method and chimney
  • Flue gas pollutant treatment system and treatment method and chimney
  • Flue gas pollutant treatment system and treatment method and chimney

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specific Embodiment 2

[0045] The specific embodiment 2 of the flue gas pollutant treatment system of the present invention, the difference between this embodiment and the above specific embodiment 1 is only: as Image 6 As shown, a humidification device 204 is installed on the top of the wet desulfurization device 200. The humidification device 204 includes a three-stage demisting component 201 and a two-stage atomization layer 202 arranged between the three-stage demisting components 201. The atomization layer 202 passes through Compressed air high-pressure atomization or direct high-pressure atomization, atomization into droplets, atomization particle size can be 10-40μm. The first-stage atomization layer is sprayed with a solution containing a low-concentration sodium-based alkaline desulfurizer, such as sodium carbonate, to achieve humidification of the flue gas while deeply removing low-concentration sulfur dioxide and sulfur trioxide in the flue gas Sulfuric acid mist. The second-stage atomi...

specific Embodiment 3

[0047] The specific embodiment 3 of the flue gas pollutant treatment system of the present invention, the difference between this embodiment and the above specific embodiment 1 is only: as Figure 7 As shown, after the pollutant treatment device 301, an atomization layer 303 is arranged at the bottom of the chimney 302 and above the flue gas inlet, and atomized droplets are sprayed in to increase the saturation of water vapor in the flue gas. The atomized liquid droplets can be a solution containing pollutant-removing agents, or liquid water. The atomized liquid droplets collected at the bottom of the chimney 302 can be discharged into the condensate recovery tank together with the liquid droplets collected by the mist eliminator 304 at the top of the chimney 302 .

specific Embodiment 4

[0048] The specific embodiment 4 of the flue gas pollutant treatment system of the present invention, the difference between this embodiment and the above-mentioned specific embodiment 1 is only that the temperature of the flue gas is reduced by the flue gas cooler, and the saturation degree of water vapor is increased, such as Figure 8 As shown, in this embodiment, a heat exchange condensing device is installed in the flue gas pipeline 1 after the pollutant treatment device. The heat exchange condensing device includes a cooler 401 for cooling the flue gas pipeline 1, and the flue gas is reduced by heat exchange and condensation. temperature, realize the humidification of the flue gas, and make the water vapor reach saturation or even supersaturation. The low-temperature cooling fluid and the flue gas flow in the opposite direction and enter the cooler to exchange heat for cooling the flue gas, reduce the temperature of the flue gas, and increase the saturation of the wet flu...

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Abstract

The invention relates to the field of flue gas pollutant treatment devices, in particular to a flue gas pollutant treatment system and treatment method and a chimney. The flue gas pollutant treatmentsystem comprises the chimney and a humidifier for humidifying flue gas entering the chimney, the chimney is provided with a cooling wall for performing heat exchange with outside air and cooling watervapor in a smoke exhaust channel of the chimney, and a demister for removing condensed liquid drops is arranged in the smoke exhaust channel of the chimney. Flue gas is humidified by the humidifier,the water vapor in the humidified flue gas are condensed into the liquid drops under the cooling action of the chimney, pollutants such as harmful gas, dust, soluble salt and acid liquor in the flue gas are absorbed into the liquid drops, the liquid drops in the flue gas are removed by the demister arranged on the upper portion of the chimney, the removed liquid drops flow to the bottom of the chimney, various pollutants are cooperatively removed, pollutant treatment effects are improved, and the problem of poor removal effect of low-concentration pollutants in the flue gas in the prior art issolved.

Description

technical field [0001] The invention relates to the field of flue gas pollutant treatment devices, in particular to a flue gas pollutant treatment system, a treatment method, and a chimney. Background technique [0002] Stationary source exhaust is mainly industrial flue gas. Industrial flue gas usually includes air pollutants such as dust, harmful gas, acid or lye. Due to environmental protection requirements, flue gas pollutants must be removed and meet environmental protection emission standards. The wet desulfurization process is a common method used in industry to remove flue gas pollutants. At the same time, it can synergistically remove dust particles and other pollutants in the flue gas. China's coal-fired power plants generally use limestone wet desulfurization Desulfurization process is used to remove sulfur and oxygen compounds in flue gas, and can remove part of the dust. Coal-fired power plants, industrial boilers, kilns, petrochemicals, sulfuric acid and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/00B01D53/18B01D53/78B01D53/50
CPCB01D47/00B01D53/002B01D53/1456B01D53/1481B01D53/18B01D53/504B01D53/78B01D2258/0283
Inventor 苏跃进
Owner 苏跃进
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