Research on the influence of pleat structure on effective filtration area during dust loading
Research on the influence of pleat structure on effective filtration area during dust loading
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纳尘时褶皱结构对有效过滤面积的影响研究
DOI：
10.1016/j.powtec.2021.09.062
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发表时间：
2021-10-01
影响因子：
5.2
通讯作者：
Zhao, Caijun
中科院分区：
文献类型：
--
作者：
Teng, Guangping;Shi, Guoqing;Zhao, Caijun
滤筒广泛应用于工业除尘系统中，褶式结构在有限的空间内起到了扩大过滤面积的主要作用。在这项研究中，褶比（褶高度与褶间距的比值）的有效过滤面积（EFA）在多分散粉尘负载的影响进行了分析。结果表明，褶皱形成的死区会增加结构阻力，降低等效摩擦系数。当褶裥比为0.74-1.48时，单位面积积尘量（DDPUA）对EFA的影响不大。当褶裥比为2.22-3.70时，EFA率随DDPUA的增加而降低。临界摩擦速度随粉尘粒径的减小而增大，褶比越大，越容易使较大的粉尘颗粒在褶角处存款，导致EFA下降率减小。(c)2021爱思唯尔有限公司版权所有。
Filter cartridges are widely applied in the industrial dust removal system, and pleat structure plays a major role in expanding the filter area in limited space. In this study, the effect of pleat ratio (the ratio of pleat height to pleat pitch) on the effective filtration area (EFA) during polydisperse dust loading was analyzed. The results indicate that the dead zone formed by pleating will increase the structural resistance and reduce the EFA. When pleat ratio is 0.74-1.48, the EFA percentage varies slightly with the dust deposition per unit area (DDPUA). When pleat ratio is 2.22-3.70, the EFA percentage decreases with the increase in DDPUA. The threshold friction velocity surges with the decrease of dust particle size, and the larger the pleat ratio, the more easily for larger dust parti-cles to deposit at the pleat corners, leading to the reduction of the EFA percentage decreasing rate. (c) 2021 Elsevier B.V. All rights reserved.