宽间距—长芒刺静电除尘器收集公路隧道模拟粉尘效率研究  

Research on Collection Efficiency of Highway Tunnel Simulation Dust Using Wide Spacinglong Thorn Electrostatic Precipitator

作　　者：孙丹凤[1] 罗朋振 鲁娜[1] 王冰[3] 邓昌宁[3] 吴彦[1] SUN Danfeng;LUO Pengzhen;LU Na;WANG Bing;DENG Changning;WU Yan(Dalian University of Technology,School of Electrical Engineering,Liaoning Dalian 116024,China;Maintenance Test Center of Southern Power Grid EHV Power Transmission Company,Guangzhou 510000,China;Transportation Research Institute of Liaoning Province,Shenyang 110015,China)

机构地区：[1]大连理工大学电气工程学院,辽宁大连116024 [2]南方电网超高压输电公司检修试验中心,广州510000 [3]辽宁省交通科学研究院,沈阳110015

出　　处：《高压电器》2019年第12期54-60,共7页High Voltage Apparatus

基　　金：国家自然科学基金项目(U1462105);中央高校基本科研业务费专项资金资助(DUT15QY17)~~

摘　　要：公路隧道中的粉尘颗粒物粒径范围分布较广,种类相对复杂,研究隧道中粉尘的去除有一定的现实意义。本研究采用静电除尘技术,通过模拟公路隧道不同情况下的各工况参数,考察了不同条件下静电除尘器的除尘效率。静电除尘器主体采用负直流高压的电极供电形式,电极采用宽间距-长芒刺结构,实验粉尘选取烟尘、水泥粉和磷镁矿石粉模拟隧道粉尘。通过改变电源电压、风速、粉尘浓度、粉尘粒径和粉尘比电阻,分别计算了各条件下的除尘效率。实验结果表明,当电源电压为8.4 k V、风速4 m/s、粉尘浓度27.59 mg/m^3、粉尘颗粒物粒径60.71μm、粉尘比电阻适中的条件下,静电除尘器的除尘效率最高,可达90%。宽间距-长芒刺结构的静电除尘器对隧道中粉尘的去除有较理想的效果。The dust in the highway tunnel has a wide range of particle size distribution with relatively complex complex kinds.It is realistic to study the removal of dust in the tunnel.In this paper,we use the electrostatic dust collection technology to evaluate the dust collection efficiency by simulating various working parameters under different conditions of the tunnel.Main body of the electrostatic precipitator is powered by a negative DC high voltage power supply.the electrode structure is the wide span-long thorn.The dust ash,cement powder and phosphorus magnesite powder dust are used as the highway tunnel dust.By changing the supply voltage,wind speed,concentration of dust,dust particle size and dust resistivity,the dust removal efficiency is calculated separately under various conditions.The experimental results show that the highest collection efficiency can be obtained when the power supply voltage is 8.4 kV,wind speed is 4 m/s,dust concentration is 27.59 mg/m^3,dust particle size is 60.71 μm and dust resistivity is moderate.The wide span-long thorn electrostatic precipitator has ideal effect on the removal of dust in the tunnel.

关 键 词：公路隧道模拟粉尘 风速 粉尘浓度 粒径 比电阻 除尘效率 

分 类 号：X70[环境科学与工程—环境工程]