袋式除尘滤料清洗再生实验

随着袋式除尘器在工业上的广泛应用,大量废旧滤袋的处理成为亟需解决的环境问题。实验探究了袋式过滤材料清洗复用的方法,研究了AMES (α-磺基脂肪酸甲酯钠)清洗剂浓度、清洗时间以及清洗温度对滤料清洗效果及使用性能的影响,以降低袋式除尘运行成本,实现循环经济。结果表明:在40℃的清洗温度下,将废旧聚苯硫醚滤料放入质量浓度为2.5%的AMES溶液中,采用自主设计的滚动清洗机清洗20 min,再联合超声波清洗机清洗10 min时,滤料的清洁度可达95.82%,滤料对0.3,0.5,1.0,2.5,5.0,10.0μm的过滤效率分别提升至81.09%、86.33%、94.86%、98.58%、99.28%、99.31%,透气度达8.182 m3/(m2·min),实现了良好的清洗效果,且清洗工艺对滤料的力学性能无明显影响。

EXPERIMENTAL STUDY ON BAG DUST FILTER CLEANING AND REGENERATION

With the wide application of bag filters in the industry, the treatment of a large number of waste filter bags has become an urgent environmental problem. Through experiments, the method of cleaning and reuse of bag filter materials was explored, and the effects of AMES(α-sulfonyl fatty acid methyl ester sodium) cleaning agent concentration, cleaning time and cleaning temperature on the cleaning effect and service performance of filter materials were studied, which not only realized circular economy but also reduced the operation cost of bag dust removal. The results showed that the optimized running condition was as follows:the cleaning temperature was 40℃, the waste polyphenylene sulfide filter material was put into AMES solution with a mass concentration of 2.5%, the self-designed rolling cleaning machine was used for cleaning for 20 min, and cleaning in ultrasonic cleaning machine was for 10 min. The cleanliness of 95.82%, filtration performance of efficiency for 0.3,0.5,1.0,2.5, 5.0,10.0 μm increased by 81.09%, 86.33%, 94.86%, 98.58%, 99.28%, 99.31%, and air permeability of the filter material of 8.182 m3/(m2·min) were the best, and the cleaning process had no obvious impact on the mechanical properties of the filter material.