摘要
基于对焊接烟尘中微细颗粒和有毒气体净化处理的需要,提出动态膜净化技术。主要根据动态膜与烟尘发生碰撞、湿润、黏附来实现烟尘的净化,通过实验分别考察装置进气方式(上进风、下进风)、入口风速大小、细化网数量对微细颗粒和有毒气体处理效果的影响。实验结果表明:下进风对烟尘颗粒和CO的去除率始终比上进风时高;当进气为下进风、风速达到32.5 m/s,安装两层细化网时去除效果达到最佳,烟尘颗粒去除率达到98%左右,CO去除率达到96%左右。通过理论分析与实验验证表明:动态膜净化技术对焊接烟尘能起到较好的净化效果,可为烟尘净化的工业化应用提供参考。
To remove fine particles and toxic gases in welding fume,a dynamic membrane purification technology is proposed.The welding fume is mainly purified through the collision,wetting and adhesion with a dynamic membrane.Experimental study is conducted to study the effects of the air inlet mode(upper air inlet and lower air inlet),inlet wind speed and number of nets on the treatment of fine particles and toxic gases.The experimental results show that the removal rate of fume particles and CO under lower air is always higher than that under upper air.When the inlet air is the lower inlet air and the wind speed reaches 32.5m/s,the removal effect is optimal when two nets are installed.Under this condition,the fume particle removal rate can reach about 98%and the CO removal rate can reach about 96%.The theoretical analysis and experimental study results show that the dynamic membrane purification technology can well purify the welding fume and provide a reference for the industrial application of fume purification.
作者
张春雷
柳忠彬
唐娟
孙兆略
ZHANG Chunlei;LIU Zhongbin;TANG Juan;SUN Zhaolue(College of Mechanical Engineering,Sichuan University of Science&Engineering,Zigong 643000,China)
出处
《中国测试》
CAS
北大核心
2018年第4期42-47,共6页
China Measurement & Test
基金
国家自然科学基金项目(51505390)
四川省青年科技创新研究团队项目(2017TD0027)
国家级重点实验室项目(TPL1405)
四川省教育厅创新科研团队项目(14TD0022)
关键词
焊接烟尘
动态膜
净化技术
进气方式
welding fume
dynamic membrane
purification technique
inlet mode
