Last-stage electric field rapping control and system of electric dust removal system

Abstract

The invention provides a last-stage electric field rapping control method and system of an electric dust removal system, and belongs to the technical field of thermal power generating units. The method comprises the steps of in response to a rapping completion signal of a previous electric field of a last-stage electric field, executing rapping operation of the last-stage electric field after a preset time interval, wherein the rapping operation comprises the steps of dividing the last-stage electric field into a plurality of rapping areas according to the distribution condition of rapping hammers on a rapping shaft of the last-stage electric field; and controlling the rapping shaft to rotate according to a preset rapping time sequence, and rapping the corresponding rapping areas through the rapping hammers, wherein when each rapping hammer raps the corresponding rapping area, the power supply voltage of the final-stage electric field is increased to a preset voltage value. According to the scheme, step-by-step rapping of areas of the final-stage electric field is achieved, meanwhile, boosting rapping of the final-stage electric field is achieved, and the reentrainment dust amount of the final-stage electric field is greatly reduced.

Description

technical field [0001] The present invention relates to the technical field of thermal power units, in particular to a final electric field rapping control method of an electrostatic precipitator system and a final electric field rapping control system of an electric precipitator system. Background technique [0002] The electrostatic precipitator system is the main treatment system for the dust in the flue gas exhausted by the boiler system of the thermal power unit. In response to the generation requirements of environmental protection, there are strict standards for the dust content in the exhaust gas of the boiler. The dry electrostatic precipitator system is currently the most widely used electrostatic precipitator system. The main principle is to set up multiple dust collection electric fields. By adding charges to the dust particles in the flue gas, the dust particles with opposite charges are adsorbed by the dust collection electric fields. Dust plate. After the ele...

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a final-stage electric field rapping control method and system of an electrostatic precipitator system, so as to at least solve the problem in the prior art that the final-stage electric field re-raises dust and makes the secondary dust-raising situation serious

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