瓶级聚酯切片颗粒静电特性及其危害  

Study on electrostatic properties and hazards of bottle-grade polyester chips

作　　者：李亮亮 周刚 郭瑞龙 赵亮 宫宏 刘全桢 LI Liangliang;ZHOU Gang;GUO Ruilong;ZHAO Liang;GONG Hong;LIU Quanzhen(SINOPEC Research Institute of Safety Engineering,Qingdao 266100,China;Yizheng Chemical Fibre Co.,Ltd.,SINOPEC,Yizheng 211900,China;College of Mechanical and Transportation Engineering,China University of Petroleum,Beijing 102249)

机构地区：[1]中国石油化工股份有限公司青岛安全工程研究院,山东青岛266100 [2]中国石化仪征化纤有限责任公司,江苏仪征211900 [3]中国石油大学(北京)机械与储运工程学院,北京102249

出　　处：《中国粉体技术》2020年第6期58-62,共5页China Powder Science and Technology

基　　金：中国石化化工事业部项目,编号:CHG19070;国家重点研发计划项目,编号:2018YFF01010804。

摘　　要：为了分析高绝缘瓶级聚酯切片在固相缩聚处理阶段切片颗粒静电特性及其危害,通过实验研究不同切片颗粒静电衰减时间、单颗粒-金属滑动摩擦切片颗粒静电饱和量以及切片产品包装时料袋表面静电位。结果表明:固相缩聚处理前后瓶级切片材料的静电电荷衰减时间(半衰期)可超过80 ks;切片颗粒滑动摩擦时带负电荷,且切片单位质量携带的静电量(荷质比)可超过-1μC·kg^-1;高度带电切片可造成包装料袋表面电位超过-100 kV。瓶级切片生产过程中,应考虑消除固相缩聚装置内切片及包装成品切片携带的静电荷,抑制静电对粉尘吸附作用,以有效控制切片中粉尘含量,提高切片产品质量。In order to analyze the electrostatic characteristics and the hazards of the high-insulation bottle-grade polyester chips during the solid-state polycondensation(SSP)process,the electrostatic attenuation characteristics of the particles,the static saturation of the single particle-metal sliding friction chip particles and the electrostatic characteristics of the bottle-grade chips in the sliding process were experimentally studied.The electrostatic potential of the surface of the bag during the packaging of the sliced products was measured.The results showed that the electrostatic charge decay time(half-life)of bottle-grade polyester chips can exceed 80 ks during the SSP process.All particles are negatively charged and the charge-mass ratio of a single grain in the sliding process exceeded-1μC/kg.In the actual production process,the surface potential of the packaging bag exceeded-100 kV.Consideration should be given to eliminating static electricity of the polyester chips during the SSP processs and packaging process to suppress the electrostatic adsorption of dust,and improving the quality of the polyester chips.

关 键 词：瓶级聚酯切片 固相缩聚 粉尘 静电衰减 静电吸附 

分 类 号：X937[环境科学与工程—安全科学]