Composite multi-layer dust-raising-preventing anode and electric dust remover with composite multi-layer dust-raising-preventing anode

Abstract

The invention provides a composite multi-layer dust-raising-preventing anode and an electric dust remover with the composite multi-layer dust-raising-preventing anode. The composite multi-layer dust-raising-preventing anode is characterized in that themiddle supporting structure of the composite multi-layer dust-raising-preventing anode is a flat plate or pressing plate type middle anode plate, the two sides of the middle anode plate are each provided with a layer of metal net or a perforated plate, the metal net and the middle plate are spaced by a certain distance, the metal net or the perforated plate is provided with areas with different aperture ratios in the horizontal direction, and the aperture ratios are symmetrical on the two sides and consistent up and down. The composite multi-layer dust-raising-preventing anode is arranged in the whole or partial area, easily causing secondary dust raising, of the electric dust remover or the area where fine dust in a tail electric field easily escapes. Compared with the prior art, the composite multi-layer dust-raising-preventing anode reduces secondary dust raising from the aspects of structural style and electric precipitation principle, improves the uniformity of corona discharge, solves the problems of corona shielding and back corona, improves the utilization rate of electric energy, and reduces the energy consumption of electric precipitation.

Description

【Technical field】 [0001] The invention relates to the technical field of flue gas pollutant treatment and electric dust removal, in particular to a composite multi-layer anti-flying dust anode and an electric dust collector with the same. 【Background technique】 [0002] The anode is an important part of the electrostatic precipitator. The anode plate is usually also called the dust collecting plate or the sedimentation plate. The plates are impacted and vibrated or shaken, and the dust attached to the surface of the plates is separated into flakes or clusters and dropped into the ash hopper to achieve the purpose of dust removal. [0003] At present, the dust collection anode of the electrostatic precipitator generally adopts the form of a plate surface, which is specifically expressed as a single-layer pressed plate. The mainstream in the market is a corrugated plate, a C-shaped plate, a Z-shaped plate, and a honeycomb plate. The flat plate is corrugated to increase the ri...

AI Technical Summary

Problems solved by technology

[0005] (1) On the surface of the existing anode plate, there is direct scouring of flue gas. When the dust is adsorbed to the surface of the anode plate, the dust is easily washed under the air flow to form secondary dust

[0006] (2) The existing anode plate is easy to cause secondary dust when it is rapped

The windproof ditch set on the existing anode plate cannot effectively block the airflow. When the dust on the surface of the anode plate has a sufficient thickness, when the dust falls under the cleaning method such as vibration, it is easy to be blown away again under the action of the airflow. The dust re-adsorption efficiency is very low

[0007] (3) After the charged dust is adsorbed on the surface of the anode plate, due to the resistance of the charged dust, the dust cannot completely release the charge after being adsorbed on the surface of the anode plate, forming an electric field opposite to the inside of the electric field, thereby reducing the effective electric field strength for dust removal and hindering the dust from coming out removed from the flue gas

Especially when the specific resistance of the dust is large, it is difficult to release the charge on the dust, which will cause the back corona phenomenon and reduce the dust removal efficiency

[0008] (4) There is uneven current in the channel formed by the existing anode plate and the discharge point, and the utilization rate of electric energy is low, resulting in high energy consumption

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