瓶级聚酯切片静电起电特性试验研究  

Experimental study on electrostatic electrification characteristics of bottle-grade polyester chips

作　　者：李亮亮 陆爱军 兰琦 陶彬 刘全桢 LI Liangliang;LU Aijun;LAN Qi;TAO Bin;LIU Quanzhen(SINOPEC Research Institute of Safety Engineering Co.,Ltd.,Qingdao Shandong 266100,China;Yizheng Chemical Fibre Co.,Ltd.,SINOPEC,Yizheng Jiangsu 211900,China)

机构地区：[1]中石化安全工程研究院有限公司,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

出　　处：《中国安全生产科学技术》2021年第12期73-77,共5页Journal of Safety Science and Technology

基　　金：中国石化科技部项目(KL20023);中国石化化工事业部项目(CHG19070);国家重点研发计划项目(2018YFF01010804)。

摘　　要：为了分析瓶级聚酯切片(PET)生产过程中分析筛处理量对其静电带电特性的影响,基于颗粒振动摩擦带电模拟试验,研究单颗粒PET振动摩擦带电饱和量以及多颗粒PET振动带电荷质比数据。结果表明:瓶级PET产品静电半衰期超过80 ks;PET单颗粒与金属分析筛碰撞摩擦时带电量随振动时间增加趋于饱和,且单粒子荷质比大小可超过16 nC·g^(-1);随着分析筛内PET总质量增加,PET颗粒间碰撞几率增加,但PET的荷质比值迅速降低。利用工业振动筛处理PET时,应尽量提高总颗粒处理量以控制颗粒带电,抑制静电对粉尘吸附作用,有利于脱除切片中携带的粉尘。In order to analyze the impact of the processing capacity of vibrating screen on the electrostatic charging characteristics during the production of bottle-grade polyester chips(PET),based on the simulation test of particle vibration friction charged,the data of the vibration triboelectric charging saturation amount f single particle PET and the vibration charging charge-to-mass ratio of multi-particle PET were studied.The results showed that the electrostatic charge decay time(half-life)of bottle-grade PET products exceeded 80 ks.When the PET single particle collided and rubbed with the metal vibrating screen,the charging amount tended to be saturated with the increase of vibration time,and the single particle charge-to-mass ratio could exceed 16 nC·g^(-1).As the total mass of PET in the vibrating screen increased,the probability of collision between PET particles increased,however,the charge-to-mass ratio of PET decreased rapidly.When using the vibrating screen to process PET,the total particle processing capacity should be increased as much as possible to control the particle charging,inhibit the electrostatic adsorption of dust,and remove the dust carried in the chips.

关 键 词：瓶级聚酯切片 摩擦带电 静电吸附 静电衰减时间 荷质比 

分 类 号：X937[环境科学与工程—安全科学]