WANG Yan, ZHANG Tao, CHEN Yihua, WANG Pan, QIU Shuyong, LYU Zhenhu
(School of Energy and Environment，Anhui University of Technology，Ma’anshan 243002，China)
Abstract: For the problems of rapid increase in pressure loss, easy abrasion and easy bag sticking of conventional dust collector filter materials, chemical reagents such as epoxy resin, acetone, diethylene triamine, plexiglass resin and absolute ethanol were used to treat non-woven filter material substrate by means of surface modification treatment, so as to prepare a new type of microporous membrane filter material.Based on the experimental analysis of its pore size distribution, air permeability, mechanical properties, filtration performance and morphological structure, the relationship between microstructure and dust removal performance was discussed.Research shows that after the surface modification treatment of the non-woven filter material substrate, the pore size of the new microporous membrane filter material is 5～50 μm, the air permeability is slightly reduced, the filtration accuracy and mechanical performance are obviously improved and the mechanical strength is increased.When the filtration wind speed is below 1.2 m/min, the total dust filtration efficiency of the new microporous membrane filter material is greater than or equal to 99%, the graded filtration efficiency of the new microporous membrane filter material is less affected by the particle sizeand the efficiency of graded filtration of PM2.5 is greater than or equal to 96%.Static filtration pressure loss increases with the increasing of filtration wind speed.Dynamic filtration pressure loss increases with the increasing of filtration time.The three-dimensional mesh smooth membrane layer attached to the surface of the new microporous membrane filter material, whose filtration mode is surface filtration, improves the filtration accuracy, acts as the initial layer of dust, reduces the dynamic filtration pressure loss and dust deposition, improves the filtration efficiency and reduces the difficulty of dust removal.
Keywords: non-woven filter material; microporous membrane filter material; surface modification; dust removal performance
中图分类号： X513 文献标志码：A
文章编号：1008-5548(2022)01-0043-09
DOI:10.13732/j.issn.1008-5548.2022.01.005
收稿日期： 2021-05-26，修回日期：2021-11-08，在线出版时间：2021-12-02。
基金项目：国家重点研发计划项目，编号：2017YFC0805204。
第一作者简介：王岩(1996—)，男，硕士研究生，研究方向为新型滤料研发、细颗粒物预凝集等。E-mail：1570547784@qq.com。
通信作者简介：陈宜华(1963—)，男，教授，博士，博士生导师，研究方向为矿山除尘、滤料研发、井下通风等。E-mail：ahutcyh@126.com。
