含尘烟气净化用滤料性能测试与分析

PERFORMANCE TEST AND ANALYSIS OF FILTER MATERIALS FOR DUSTY FLUE GAS PURIFICATION

针对含尘烟气净化问题,选取6种耐高温袋式除尘滤料,通过实验研究探索分析6种滤料(1号为PPS滤料1,2号为PPS滤料2,3号为PSA滤料,4号为PI+PPS混纺滤料,5号为PPS滤料3,6号为PI滤料)间性能的差异。结果表明:力学性能方面,6种滤料纬向断裂强力,6号滤料>1号滤料>5号滤料>2号滤料>3号滤料>4号滤料,其值在1 079~2 219 N;经向断裂强力相当,其值在799~1 122 N。耐温性能方面,分别在温度为180,200,220℃,24 h的实验条件下,2号、3号、5号、6号滤料的经、纬向断裂强力保持率均≥100%,其他2种滤料均有所下降;过滤效率方面,不同风速下6种滤料对PM_(2.5)的过滤效率排序为6号滤料>3号滤料>4号滤料>5号滤料>1号滤料>2号滤料,其值在33.20%~74.12%。试验表明,PPS类滤料采用PI纤维后可以提高滤料的过滤性能和强力。

Six kinds of ultra-low-emission dust filter materials were selected to discuss their performance differences, which had a great significance to the purification of high temperature exhaust gas. The properties of the filter material at different conditions were discussed. The breaking strength in the cross-machine direction of different filtering materials in descending order was as follows ：PI filter material 〉 PPS imported fiber filter media 〉 PPS（ PTFE emulsion impregnation） filter material 〉 PPS domestic fiber filter material 〉 PSA blended filter material 〉 PI ＋ PPS blended filter material, whose value were between 1 079 N and 2 219 N. The value of the longitudinal direction breaking strength was between 1 079 N and 2 219 N, and the value of the 6 kinds of filter was almost the same.＇ In the experimental conditions of 180, 200, 220 ~C and 24h, the retention rate of warp and weft strength of PPS domestic fiber filter material, PSA blended filter material, PPS （PTFE emulsion impregnation） filter material and PI filter material filter material was t〉 100% , and the breaking strength retention rate of other two filter material were reduced; filtration efficiency of 6 kinds of filter media on PMz5 at different filtration velocity in descending order was as follows： PI filter material 〉 PSA blended filter material 〉 PI ＋ PPS （ PTFE base cloth） blended filter material 〉 PPS（ PTFE emulsion impregnation） filter material 〉 PPS imported fiber filter media filter material 〉 PPS domestic fiber filter material, and their value between 33.20% and 74. 12%. The test showed that the PPS filter material could improve the filtration performance and filter strength of the filter material by using PI fiber.