LI Liangliang1，ZHOU Gang2，GUO Ruilong2，ZHA0 Liang3，GONG Hong1，LIU Quanzhen1
(1. SINOPEC Research Institute of Safety Engineering, Qingdao 266100, China; 2. Yizheng Chemical Fibre Co., Ltd., SINOPEC, Yizheng 211900 , China; 3. College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249)
Abstract: 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 -1 μC/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.
Keywords: bottle-grade PET chip; solid-state polymerization; dust; static decay; electrostatic adsorption
文章编号：1008-5548(2020)06-0058-05
DOI:10.13732/j.issn.1008-5548.2020.06.008
收稿日期： 2020-03-21， 修回日期：2020-04-26,在线出版时间：2020-09-11 07:21。
基金项目：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。
第一作者简介：李亮亮(1987—)，男，博士，高级工程师，研究方向为石油化工静电安全防护技术。E-mail：lill.qday@sinopec.com。
通信作者简介：刘全桢(1963—)，男，博士，教授，研究方向为石油化工雷静电安全防控技术。E-mail：liuqz.qday@sinopec.com。
中图分类号：X937 文献标志码：A
