Ash cleaning method based on anode plate rapping device of electrostatic precipitator

Abstract

The invention discloses a dust removing method based on an electric dust remover positive plate rapping apparatus. A computer system is mounted on the electric dust remover positive plate rapping apparatus; a top excitation hydraulic cylinder and a top impacting hydraulic cylinder are mounted above a positive plate set; a bottom excitation hydraulic cylinder and a bottom impacting hydraulic cylinder are mounted at the lower end of the positive plate set; a thickness tester and a displacement sensor are mounted on the surface of any positive plate. The dust removing method based on the electric dust remover positive plate rapping apparatus comprises the following steps: firstly, obtaining the thickness of a dust layer through the thickness tester, judging whether the dust removal is needed, carrying out sweeping-frequency rapping by using the top / bottom excitation hydraulic cylinder firstly when the dust removal is needed, impacting and rapping through the top / bottom impacting hydraulic cylinder when the displacement sensor monitors that a response amplitude of the positive plate reaches a set value in the process of sweeping-frequency rapping, repeating the process. Due to the cooperation between the excitation hydraulic cylinders and the impacting hydraulic cylinders, the efficiency of removing ash of the positive plate can be effectively improved by using a resonance principle. The electric dust remover positive plate rapping apparatus has the characteristics of skillful design, easiness in improvement and low improvement cost, and the like.

Description

technical field [0001] The invention relates to a dust cleaning method based on a rapping device for an anode plate of an electric precipitator, in particular for removing the dust layer deposited on the anode plate of an electric precipitator. Background technique [0002] At present, the charged dust in the flue gas of the electrostatic precipitator moves towards the ground electrode under the action of the electric field force, and is continuously deposited on the anode plate, gradually forming a thicker and thicker dust layer. If the deposited dust layer is too thick, the conductivity between the electrodes will be reduced, and the corona current will be reduced, which is not conducive to the dust adsorption during the dust removal of the electrostatic precipitator. For dust with high specific resistance, it will also cause back corona, which will reduce the dust removal efficiency of the electrostatic precipitator. Therefore, after a period of operation, the electrosta...

AI Technical Summary

Problems solved by technology

In the actual working process of the electrostatic precipitator, the required rapping intensity is greatly affected by factors such as the thickness of ash deposits, dust characteristics, working environment and equipment operating conditions, and it is very easy to set the rapping intensity too small or too high. Big

If the rapping intensity is too small, the dust layer cannot be separated from the anode plate, resulting in incomplete dust removal, reducing the cleaning efficiency, causing serious dust accumulation on the surface of the anode plate, and affecting the working efficiency of the electrostatic precipitator

If the rapping intensity is too high, the dust layer will be shattered, resulting in secondary dust, which cannot better meet the requirements of cleaning, and also reduces the cleaning efficiency.

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