Effect of rolling point accounting for 33% on the filtration performance of fibrous filter media

This study investigates the effect of rolling points accounting for 33% on the filtration performance of filter media, hoping to provide guidances for the selection of filter media for industrial dust removal. The differences in filtration performance between filter media with and without rolling points were compared through experi-ments. The results show that the initial pressure drop and resistance coefficient of clean filter media with rolling points increase by 31.07% and 45.08%, respectively. And, the pressure drop of loaded filter media with rolling points and the specific resistance coefficient of the dust cake are improved, but the difference in filtration ef-ficiency between the two filter media not exceed 5%. Compared with the rolling points area accounting for about 33% of the physical filtration area, the effective filtration area of filter media without rolling points is 39.52% larger on average. Compared with the filter media with rolling points, the average filtration efficiency of the filter media without rolling points decreased from 91.90% to 89.88%, but the average pressure drop decreased from 128.7 Pa to 85.1 Pa, and the quality factor increased from 0.01637 to 0.02161, an improvement of about 32.01%. In short, rolling points reduce the filtration performance of filter media, and filter media without rolling points have better filtration and energy consumption performance.

Automated summary

This study investigates the effect of rolling points on the filtration performance of filter media. The results show that rolling points increase the initial pressure drop and resistance coefficient of clean filter media, but have minimal impact on filtration efficiency. Filter media without rolling points have larger effective filtration areas, lower pressure drops, and higher quality factors compared to those with rolling points.