Abstract: In order to improve the dust removal efficiency of fine particulate matter in industry, based on the traditional wet string grid filtration dust removal and electrostatic precipitator theory, a new electrostatic precipitator experimental system was built by dividing wet dust removal and electrostatic precipitator into zones, under the synergistic effect of wet string grid. The influence of wavelength and amplitude of corrugated plates on dust removal efficiency under different voltages and wind speeds was explored through a single electrostatic precipitator experiment, and the optimal wavelength and amplitude values of corrugated plates were obtained. The influence of voltage, wind speed, and atomization pressure on the dust removal efficiency was explored through composite wet electrostatic precipitator experiments, and verified the dust removal effect of corrugated plates as dust collection plates in wet electrostatic precipitator systems. The results indicated that the dust removal efficiency in a single electrostatic precipitator was directly proportional to the voltage and inversely proportional to the wind speed. The dust removal efficiency of corrugated plates with different wavelengths and amplitudes was significantly improved compared to flat plates under different voltage and wind speed conditions, the impact of amplitude on the dust removal efficiency of corrugated plates was more significant, the corrugated plate with a wavelength of 150 mm and an amplitude of 60 mm had the best dust removal efficiency. The dust removal effect of the composite wet electrostatic precipitator system was significantly improved compared to a single electrostatic precipitator system, the dust removal efficiency of the combination of corrugated plate and water in the composite wet electrostatic precipitator system was higher than that of the combination of flat plate and water. The dust removal efficiency increased first and then decreased with the increase of wind speed and atomization pressure, which was proportional to the voltage. When the voltage, wind speed, and atomization pressure are 30 kV, 0.6 m/s, and 6 MPa, respectively, the maximum dust removal efficiency of the system reached 96.08%.

Key words: wet chord grid, corrugated electrode plate, electrostatic precipitatior, composite wet electrostatic precipitator

摘要： 为提高工业上对细颗粒物的除尘效率，基于传统的湿式弦栅过滤除尘及电除尘理论，将湿式除尘与电除尘分区布置，搭建了湿式弦栅协同作用下的新型电除尘实验系统，通过单一静电除尘实验探究了波纹极板的波长与振幅在不同电压、风速下对除尘效率的影响，并获取波纹极板最佳的波长值与振幅值；通过复合湿式电除尘实验探究了电压、风速、雾化压力对除尘效率的影响，并验证了波纹极板作为收尘极板时在湿式电除尘系统中的除尘效果。结果表明，单一静电除尘中的除尘效率与电压成正比，与风速成反比；不同波长、振幅的波纹极板的除尘效率在不同的电压、风速条件下较平板均显著提高，其中振幅对波纹极板的除尘效率的影响更为显著，波长为150 mm、振幅为60 mm的波纹极板除尘效率最佳；复合湿式电除尘系统的除尘效果相较于单一电除尘系统显著升高，复合湿式电除尘系统中的波纹板与水组合的除尘效率高于平板与水组合的除尘效率，除尘效率随着风速、雾化压力增加先增加后降低，与电压成正比；当电压、风速、雾化压力分别为30 kV, 0.6 m/s, 6 MPa时，该系统除尘效率最高达到96.08%。

关键词: 湿式弦栅, 波纹极板, 电除尘, 复合湿式电除尘