Vertical wet electrostatic precipitator

Abstract

The invention discloses a vertical wet electrostatic precipitator. The electrostatic precipitator comprises a tower body, a plate area, a smoke uniform distribution plate and a retraction ring, wherein the plate area, the smoke uniform distribution plate and the retraction ring are arranged in the tower body; the plate area comprises an anode plate and a cathode wire, wherein the anode plate and the cathode wire are vertically arranged, a plurality of vertical and protruding segmentation wires are arranged on the surface, opposite to the cathode wire, of the anode plate, a plurality of water film grooves are formed, the width of each segmentation wire ranges from 0.5 mm to 1.5 mm, the gap between every two adjacent segmentation wires ranges from 10 mm to 15 mm, a water flow channel is formed in the anode plate, an overflow hole is formed in the top of each water film groove, the overflow holes communicate with the water flow channel, and the water flow channel is connected with an external water supply source through a water pipe. The water film grooves can limit the downward flowing direction of water films, the water films are limited in a narrow water tank to flow downwards, anddue to the effect of water flow tension, the water flow can fill the interiors of the water film grooves, therefore, the water films can be formed in the water film grooves, the escape of dust on theanode plate can be reduced, and thus the dust can be effectively cleared.

Description

technical field [0001] The invention relates to the technical field of flue gas dust removal, in particular to a vertical wet electrostatic precipitator. Background technique [0002] my country's coal-based energy structure will not change for a long time. So far, the basic methods of pollutant control in thermal power plants in my country mainly include: low-nitrogen combustion + SCR denitrification + dry dust removal + wet desulfurization. The existing control methods have low capture efficiency for PM2. For GGH units, the phenomenon of "gypsum rain" or "blue / yellow smoke" often appears at the chimney outlet, causing secondary pollution to the environment. [0003] In order to solve these problems, under the current conditions of my country's electric power environmental protection, it is necessary to adopt the deep purification technology of smoke and dust to improve the efficiency of dust removal, so as to effectively remove fine particles, SO 3 and other pollutants. ...

AI Technical Summary

Problems solved by technology

Since the water film flows downward on the plate relying on gravity, when encountering obstacles or changes in the surface characteristics of the plate, the flow direction will be changed, and phenomena such as "convergence" and "cracking" will occur, and a complete and uniform water film will not be formed under the plate. film, resulting in no water film in some places, the dust on the plate in these places cannot be cleaned, and it accumulates thicker, and the corona electrode discharges the accumulated dust, resulting in the phenomenon that the electrostatic precipitator cannot supply power normally, and cannot work in severe cases

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