ELECTROSTATIC CHARGING CHARACTERISTICS OF POLYETHYLENE POWDER DURING PNEUMATIC CONVEYING
ELECTROSTATIC CHARGING CHARACTERISTICS OF POLYETHYLENE POWDER DURING PNEUMATIC CONVEYING
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DOI：
10.1109/tia.1985.349702
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发表时间：
1985-01-01
影响因子：
4.4
通讯作者：
ROSE, LJ
中科院分区：
文献类型：
--
作者：
CARTWRIGHT, P;SINGH, S;ROSE, LJ
为了研究粉体气力输送和储存过程中的静电荷电特性和可能的着火危险，建立了一套完整的实验装置。钻机由两个大型筒仓（55 m3和60 m3）组成，通过约35 m长的钢管工程连接。粉体输送参数如速度、相对湿度、稀释度等，可以精确控制。该装置已被用于研究聚乙烯粉末的充电特性。在粉末上检测到双极充电-细颗粒带负电荷，而粗颗粒带正电荷。电场强度高达150千伏/米已被测量在筒仓填充操作。详细测量了聚乙烯在不同输送参数下的荷电特性。本文报告了实验结果。
A full-scale experimental rig has been set up to study the electrostatic charging characteristics and possible ignition hazards during pneumatic conveying and storage of powders. The rig consists of two large silos ( 55 m3 and 60 m3) which are connected via approximately 35 m length of steel pipe work. The powder conveying parameters such as velocity, relative humidity, dilution, etc., can be accurately controlled. The rig has been used to study the charging characteristics of polyethylene powder. Bipolar charging has been detected on the powder-the fine particles charge negatively while the coarse particles charge positively. Electric field strengths up to 150 kV/m have been measured during the silo filling operation. Detailed measurements have been carried out on the charging characteristics of polyethylene as a function of different conveying parameters. The experiments and results are reported.