Cleaning method of wet-type electrostatic dust collector pole plate

Abstract

The invention provides a cleaning method of a wet-type electrostatic dust collector pole plate. A normal pressure dripping spraying cleaning mode or constant pressure overflow spraying cleaning mode or other non-spraying cleaning modes are adopted, the surface tension of water is utilized for overcoming the influence of gravity on water flow, and therefore it is effectively ensured that the pole plate is cleaned completely and efficiently in real time. According to the structure, a water conveying pipe (1), a flow equalizing pipe (2) and the double-layer symmetric corrugated face pole plate (3) are included. Cleaning water is sprayed to the top end of the flow equalizing pipe (2) on the upper portion of the double-layer symmetric corrugated face pole plate (3) in a dripping or overflow spraying mode through the water conveying pipe (1), the flow equalizing pipe (2) equalizes water drops to the two surfaces of the double-layer symmetric corrugated face pole plate (3), a continuous and uniform cleaning water film is used for continuously taking away pollutants collected on the surfaces of the dust collection pole plate, and cleaning of the pole plate is achieved. The characteristics that normal pressure dripping (overflow) spraying, no spraying dead angle, flow distribution balance, the uniform pole plate water film, complete cleaning and the like are adopted, and the cleaning method is small in space-charge effect, stable in electric field operation and efficient, saves energy, and can greatly heighten the pole plate, save floor space and save investment.

Description

technical field [0001] The invention relates to a dust cleaning method for flue gas purification equipment in the field of environmental protection, in particular to a cleaning method for a polar plate of a wet electrostatic precipitator. technical background [0002] Wet electrostatic precipitator is a kind of purification equipment used to deal with trace dust and fine particles. It is mainly used to remove dust, acid mist, liquid droplets, aerosols, PM2.5 and other harmful substances in wet gas. It has dust removal efficiency High, small pressure loss, simple operation, low energy consumption, no moving parts, no secondary dust, can work below the flue gas dew point temperature, can be combined with other flue gas treatment equipment, flexible and diverse, etc., is an industrial flue gas One of the ideal equipment for pollution control, it is widely used in acid removal and fog removal in various industrial production processes. Especially with the deteriorating quality ...

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Problems solved by technology

[0006] The invention aims to overcome the high concentration of splashing droplets, large reactive power loss in electric field, large space charge effect, poor purification efficiency, unstable operation of electric field, and prone to spray dead angles that often occur in the WESP plate spray cleaning method. For defects such as low utilization rate of the plate, the cleaning method of constant pressure dripping or constant pressure overflow is adopted, and the surface tension of water is used to overcome the influence of gravity on the water flow, so as to effectively ensure the real-time, thorough and efficient cleaning of the dust collecting plate

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