荷电水雾振弦栅除尘器电极结构及外设参数优化研究  

Study on Electrode Structure and Peripheral Parameter Optimization of Charged Water Mist Vibrating Wire Grid Dust Collector

作　　者：饶贞标 陈祖云[1,2] 张如梦 肖竹新 RAO Zhenbiao;CHEN Zuyun;ZHANG Rumeng;XIAO Zhuxin(Faculty of Resource and Environmental Engineering,Jiangxi University of Science and Technology Ganzhou,Jiangxi 341000)

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]江西省矿冶环境污染控制重点实验室,江西赣州341000

出　　处：《工业安全与环保》2021年第6期76-80,共5页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(51864016,51464016)。

摘　　要：为了更好的了解电极结构对细微粉尘去除的影响,对电极形状、芒刺长度、喷嘴与电极间距和电极数进行研究,通过对比分析不同电晕电压下的水雾荷质比,确定最佳电极结构参数,然后对入口风速、喷雾压力和入口平均粉尘质量浓度等外设参数进行优化,确定最佳外设参数后对比分析了优化前后除尘器分级效率。结果表明放电能力大小顺序为:环形电极>方形电极>棒形电极,喷嘴与电极间距100 mm>125 mm>75 mm>50 mm,最大荷质比下电极芒刺数量为4个>6个>8个>0个,电极芒刺长度为10 mm>20 mm>30 mm,1个电极>2个电极>3个电极,最大电晕电压为40 kV。最佳外设参数分别为入口风速为5.96 m/s,喷雾压力为0.5 MPa,入口平均粉尘质量浓度为1.97 g/m3;电极优化后5μm以下粉尘分级效率提高了3.57%,说明电极结构优化有利于荷电水雾对微细粉尘的捕集。In order to better understand the effect of the electrode structure on the removal of fine dust,the electrode shape,burr length,the distance between the nozzle and the electrode and the number of electrodes were studied.By comparing and analyzing the water mist charge-to-mass ratio under different corona voltages,the best electrode structure parameters is determined,and then the peripheral parameters such as inlet wind speed,spray pressure and inlet average dust concentration are optimized.After determining the best peripheral parameters,the classification efficiency of the dust collector before and after optimization is compared and analyzed.The results show that the discharge capacity is ring electrode>square electrode>rod electrode,the distance between nozzle and electrode is 100 mm>125 mm>75 mm>50 mm,the number of electrode burrs under the maximum charge-to-mass ratio is 4>6>8>0,the electrode burr length is 10 mm>20 mm>30 mm,one electrode>two electrodes>three electrodes,and the maximum corona voltage is 40 kV.The best peripheral parameters are inlet wind speed of 5.96 m/s,spray pressure of 0.5 MPa,and average inlet dust concentration of 1.97 g/m3.After electrode optimization,the dust classification efficiency below 5μm is increased by 3.57%,indicating that the optimization of electrode structure is beneficial to the collection of fine dust by charged water mist.

关 键 词：水雾荷质比 微细粉尘 电晕极 配置优化 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]