Dust-collecting pole plate of wet water-film electrostatic precipitator

Abstract

The invention discloses a dust-collecting pole plate of a wet water-film electrostatic precipitator, which mainly solves the problem that a complete uniform cover water film is difficultly formed on the surface of the current pole plate. The dust-collecting pole plate comprises an inner material layer which is used for absorbing water and allows water to flow from top to bottom. Two sides of the inner material layer are composited with external material layers which can allow water to penetrate. The porosity of the external material layers is smaller than the porosity of the inner material layer at the corresponding height, and therefore the water can slowly leak from the inner surfaces to the outer surfaces of the external material layers, and complete water films are formed on the outer surfaces. The dust-collecting pole plate has the advantages of simple structure, low water consumption and high efficiency of dust collection. Under the premise that the conventional electrostatic precipitator design is not majorly changed, the current dust-collecting pole plate is replaced and a water inlet pipeline is connected so that the electrostatic precipitator can put into effect, and a mechanical vibration ash removal device does not need to be specially deployed. The dust-collecting pole plate can be conveniently used for the design upgrade and the improvement update of the current electrostatic precipitation equipment and has the advantage of large-scale application.

Description

technical field [0001] The invention relates to a wet water film electrostatic precipitator, in particular to a dust collecting plate of the wet water film electrostatic precipitator. Background technique [0002] At present, the content of flue gas and dust in the atmosphere of our country remains high, and the PM of fine particulate matter 2.5 The concentration is several times higher than that of developed countries, which poses a great threat to human health and social and economic development. The emission control of fine particulate matter is imminent. Under the more stringent emission standards for fine particulate matter, no single removal technology can meet the demand, so it is increasingly urgent to develop collaborative removal technologies with different control methods. [0003] The electrostatic precipitator, which uses electrostatic field as the removal mechanism, is a commonly used flue gas dust removal device at present, and has been widely used in power c...

AI Technical Summary

Problems solved by technology

But this kind of wet electrostatic precipitator also has the following defects: because the water film will be affected by the surface tension of the plate, or the direction of the water flow will change when encountering obstacles, so that a complete and uniform water film cannot be formed on the surface of the plate, resulting in these The dust in the area is difficult to remove

In order to solve the above problems, the measures of spraying a large amount of water on the surface of the polar plate are mainly adopted at present, but this will lead to a substantial increase in water consumption and more difficult water treatment.

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