LU Jinli^1a, HE Jie^1a, ZHUANG Qianshuang², QIAN Fuping^1b, WANG Jia^1a

(1a.School of Architectural Engineering; 1b.School of Energy and Environment, Anhui University of Technology, Maanshan 243032，China；2.Suzhou Hengqing Environmental Protection Technology Co., Ltd., Suzhou 215600, China)

Abstract: In order to study the influence of filter resistance on filter performance of dust collector, based on CFD standard k-ε turbulence model and porous jump model, a numerical simulation study was carried out on the axial filtration pressure drop distribution of two filter bags with 8 and 10 pleats at different inlet wind speeds.A new type of combined double pleated filter bag was proposed, and unevenness and relative standard deviation were used to analyze the uneven distribution of pressure drop between the double pleated filter bag and the conventional pleated filter bag.The results show that the pressure drop distribution of the pleated filter bag along axial direction is non-uniform, and it changes in steps from the bottom of bag to the bag mouth Pressure drop near the bag mouth is larger and the unevenness of the pressure drop varies with the inlet wind speed increase and become more obvious.It is concluded that increasing the number of pleats in the upper half increases the corresponding filter area, makes the air flow evenly distributed, and effectively reduces the pressure drop at the top by 11.2%～15.4%.The pressure drop distribution of the double pleated filter bag is relatively uniform, and the filter pressure drop at the inlet and outlet of the dust collector can be reduced by up to 13.5%, effectively reducing the energy consumption of the dust collector.

Keywords: double pleated filter bag; pressure drop; unevenness; relative standard deviation; numerical simulation

中图分类号：X513                              文献标志码：A

文章编号：1008-5548(2022)03-0059-09

DOI:10.13732/j.issn.1008-5548.2022.03.008

收稿日期： 2021-11-10， 修回日期：2022-03-08，在线出版时间：2022-05-05。

基金项目：国家自然科学基金项目，编号：51306002；安徽省自然科学基金项目，编号：1508085QE95。

第一作者简介：鲁进利(1982—)，男，副教授，博士，研究方向为工程热物理。E-mail: lujinli@sina.cn。