【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)
【作者机构】东北大学滤料检测中心
【摘要】 工业粉尘排放是大气中微细颗粒尤其PM2.5的主要来源之一,袋式除尘器中的滤料是颗粒捕集的关键。以实验手段,系统研究了几种典型针刺毡及覆膜滤料的阻力特性、全尘捕集效率及微细粉尘捕集效率。数据显示,滤料在老化后阻力增加,覆膜滤料增幅最小;常规滤料在洁净状态时对全尘的效率超过99.9%,老化稳定后效率在99.99%以上;尽管滤料对全尘的效率很高,但其对10μm颗粒的效率在94%～99%之间,对2μm的效率在52%～92%之间,仍有很大的提升需求
【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
【文献出处】 过滤与分离,Journal of Filtration & Separation,400期刊网编辑部邮箱,2012年04期
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