给水式气水混合离子发生装置对颗粒物净化的参数优化研究  

Research on Parameter Optimization of Particle Purification in a Water-fed Gas-water Mixed Ion Generation Device

作　　者：吴婧怡 李春辉 李振海[1] Wu Jingyi;Li Chunhui;Li Zhenhai(School of Mechanical Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学机械与能源工程学院,上海200092

出　　处：《机电工程技术》2024年第2期89-93,共5页Mechanical & Electrical Engineering Technology

摘　　要：铁路隧道内清筛作业中柴油机车排放尾气中含有大量的颗粒物,由于隧道内通风差,颗粒物无法及时有效地排出隧道,严重危害现场作业人员的身体健康。为此,基于气水混合离子技术,利用凝并作用去除颗粒物,设计了一种应用于柴油机车尾气的净化装置,探讨不同给水流量、不同放电电压、不同极板间距、不同放置方式和不同针尖个数对装置净化效果的影响。使用气溶胶发生器产生固态颗粒气溶胶作为污染源,在100 L实验舱中对不同影响因素进行了实验研究,结果表明:注射泵水流量为50μL/min、电压为9 200 V、极板间距为55 mm、针头个数为15个是净化装置的最优设计参数,不同放置方式无明显差别。该气水混合离子发生装置可以为净化柴油机尾气颗粒物提供新的方式。The exhaust emissions from diesel locomotives during the cleaning operation in railway tunnels contain a large amount of particulate matter.Due to poor ventilation inside the tunnel,particulate matter cannot be discharged from the tunnel in a timely and effective manner,which seriously endangers the physical health of on-site workers.Therefore,based on the gas-water mixed ion technology,utilizing coagulation to remove particulate matter,a purification device applied to the exhaust gas of diesel vehicles is designed,and the effects of different feed water flow rates,different discharge voltages,different polar plate tip spacings,different placing styles,and different numbers of tips on the purification effect of the device are discussed.Using an aerosol generator to generate solid particulate aerosols as a pollution source,and experimental research on different influencing factors is conducted in a 100 L experimental chamber.The results indicate that:the water flow rate of the syringe pump is 50μL/min,the discharge voltage is 9200 V,the electrode plate spacing is 55 mm,and the number of needles is 15 as the optimal design parameters of the purification device.And there is no difference in placement.The gas-water mixed ion generation device can provide a new way to purify diesel engine exhaust particulate matter.

关 键 词：气水混合离子 柴油机车 颗粒物 净化效果 设计参数 

分 类 号：X513[环境科学与工程—环境工程] TU834[建筑科学—供热、供燃气、通风及空调工程]