颗粒形体因素对静电发生的影响

doi:10.3969/j.issn.0438-1157.2013.10.007

化工学报 ›› 2013, Vol. 64 ›› Issue (10): 3534-3541.DOI: 10.3969/j.issn.0438-1157.2013.10.007

颗粒形体因素对静电发生的影响

吴洁洁, 姚军, 曹培根, 周芳, 李宁

厦门大学能源研究院, 福建厦门 361005

收稿日期:2013-03-18 修回日期:2013-07-11 出版日期:2013-10-05 发布日期:2013-10-05
通讯作者: 姚军
作者简介:吴洁洁 (1989-),女, 硕士研究生。
基金资助:
教育部“新世纪优秀人才支持计划”项目(NCET-10-0716);福建省自然科学基金项目(2012J01235)

Effect of granular shape on electrostatics

WU Jiejie, YAO Jun, CAO Peigen, ZHOU Fang, LI Ning

School of Energy Research, Xiamen University, Xiamen 361005, Fujian, China

Received:2013-03-18 Revised:2013-07-11 Online:2013-10-05 Published:2013-10-05
Supported by:
supported by the“New Century Excellent Talent”(NECT-10-0716)and the Natural Science Foundation of Fujian Province(2012J01235).

摘要/Abstract

摘要： 固体颗粒广泛应用于化学化工、能源、食品、制药、采矿等行业。在工业过程中,颗粒与壁面摩擦产生静电对安全生产带来很多问题,如引起颗粒结团、堵塞、火星和爆炸等危害,然而静电产生的机理还有很多未知,如颗粒形体因素影响静电发生的机理尚不清楚。本工作目的是研究颗粒形体因素对因颗粒面摩擦产生静电的影响机理。实验选用颗粒材料为PVC,平均尺寸为2.0～5.0 mm,分别以三角形面和梯形面作为摩擦面,采用直接测量的方法获得单个颗粒产生的静电。实验证明,无论是一次摩擦产生的静电,还是多次摩擦产生的饱和静电,颗粒的形体因素如前冲角、长宽比、面积以及不同的滑行方向和环境湿度都会明显影响静电的产生。

关键词: 颗粒, 静电, 形体, 三角形, 梯形

Abstract: Granules are widely used in chemical,energy,food,pharmaceutical,mining and relevant industries. In solid processing systems,electrostatics could be commonly generated,which causes many problems,such as granule clustering,blocking,sparking and even exploding.So far,the functional dependence of electrostatic charge generation on granular size and shape has not been fully understood.In this work,granules made of polyvinyl chloride(PVC)with shapes of triangle or trapezium and mean size 2.0—5.0 mm,were studied.Granular shape factors,such as front-facing angle,length-ratio,area,and sliding orientation,relative humidity affected electrostatics greatly,but independent of how many times of granule sliding.

Key words: granule, electrostatics, granular shape, triangle, trapezium

中图分类号:

TQ022.4

吴洁洁, 姚军, 曹培根, 周芳, 李宁. 颗粒形体因素对静电发生的影响[J]. 化工学报, 2013, 64(10): 3534-3541.

WU Jiejie, YAO Jun, CAO Peigen, ZHOU Fang, LI Ning. Effect of granular shape on electrostatics[J]. CIESC Journal, 2013, 64(10): 3534-3541.

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颗粒形体因素对静电发生的影响

Effect of granular shape on electrostatics

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