芒刺参数对电晕放电及细颗粒物脱除特性的影响  

The effect of barbed electrodes parameters on the discharge characteristics and particles removal efficiency

作　　者：王磊 李明臻 王翔[3] WANG Lei;LI Mingzhen;WANG Xiang(State Grid Shouguang Power Supply Company,State Grid Shandong Electric Power Company,Shouguang 262700,Shandong,China;Yuexiu Power Supply Bureau,Guangzhou Power Supply Bureau Co.,Ltd.,Yuexiu 510000,Guangzhou,China;National Engineering Laboratory for Coal-Fired Pollutants Emission Reduction,Shandong University,Jinan 250061,Shandong,China)

机构地区：[1]国网山东省电力公司寿光市供电公司,山东寿光262700 [2]中国南方电网广州供电局有限公司越秀供电局,广州越秀510000 [3]山东大学燃煤污染物减排国家工程实验室,山东济南250000

出　　处：《山东大学学报（工学版）》2020年第6期118-128,共11页Journal of Shandong University（Engineering Science）

摘　　要：为研究芒刺电极参数对电晕放电及颗粒物脱除特性的影响,建立静电除尘器机理实验台。在不同电压和颗粒物浓度下,分别研究了芒刺厚度δ和芒刺间距L对电晕电流及PM2.5、PM10脱除效率的影响。结果表明,薄芒刺电极的电晕放电和对各粒径段颗粒物的脱除能力高于厚芒刺电极,其中对粒径为0.2~2μm的颗粒物的脱除效率提升明显;低电压和高颗粒物浓度时,薄芒刺电极对电晕放电和颗粒物脱除能力的提升尤为明显。随着芒刺间距的减小,电晕电流和颗粒物脱除效率均呈先增大后减小的趋势。芒刺间距为50 mm时,电极的电晕电流最大;芒刺间距为80 mm时,电极对PM2.5、PM10的脱除效率最高。研究结果为静电除尘器中芒刺电极的设计、选型提供了参考依据。To study the effect of design parameters on discharge characteristic and particles removal efficiency of the barbed electrodes,a test bench was built and the discharge current and PM2.5、PM10 removal efficiency of the discharge electrode with various barb thicknessδand spacing L under different applied voltage and dust concentration were studied.The results showed that the thinner barb was better at discharging and removing fine particles than the thicker one,especially for the particles in 0.2~2μm.The effect of the thinner barb on the particles removal efficiency was dramatically obvious in the case of a lower applied voltages and higher mass concentration.The discharge current and particles removal efficiency firstly increased to the maximum and then decreased with barb spacing decreasing.The discharge current was the largest when the barb spacing was 50 mm,while the particles removal efficiency was highest when the barb spacing was 80 mm.The results could provide references for the selection and design of barbed discharge electrodes in the electrostatic precipitator.

关 键 词：电除尘器 芒刺电极 芒刺厚度 芒刺间距 电晕电流 细颗粒物 

分 类 号：TM89[电气工程—高电压与绝缘技术]