【作者】柳静献; 谢越; 常德强; 毛宁; 孙熙
【Author】LIU Jing-xian; XIE Yue; CHANG De-qiang; MAO Ning; SUN Xi(Filter Test Center of Northeastern University; Shenyang 110004; China)
【Abstract】 Industrial dust emission is one of the main sources of fine particle especially for PM2.5 in atmosphere.Filter media in baghouse is the key component for particle capture.In the paper,several typical needle felts and membrane filters are studied by means of experiments.The performances of filter such as resistance,capture efficiency for total particle and efficiency for fine particle are tested.It was indicated by the results that the resistance of filter increased after aging,increasing rate of membrane filter was the smallest.The efficiencies of normal filters were above 99.9% for clean state,and 99.99% for stable state after aging.Although the filters had high efficiency for total particle,but the efficiency for 10μm particlewas 94%-99% and for 2μm was 52%-92%,the filter need to be improved.
【关键词】 滤料; 微细颗粒; 颗粒; 捕集
【Key words】 filter media; fine particle; particle; capture