The 66th JSAP Spring Meeting, 2019
Mar 9 - Mar 12, 2019Tokyo Institute of Technology, Ookayama Campus
The 66th JSAP Spring Meeting, 2019
Mar 9 - Mar 12, 2019Tokyo Institute of Technology, Ookayama Campus
[12a-W833-1]Static Electricity of Insulating Flexible Intermediate BulK Container for Powder
-Effect of relative humidity on surface charge voltages-
〇Kwang Seok Choi1, Yuta Endo1, Yuki Osada2, Teruo Suzuki2(1.JNIOSH, 2.Kasuga Denki Inc.)
Keywords:
electrostatic charges,Flexible Intermediate Bulk Container,powder
Powder handling operations are conducted to support our daily life and industrial society. However, industrial accidents caused by electrostatic charges or/and discharges on powders are sometimes happened with an insulating flexible container. This paper reports surface voltages on a flexible container bag during power loading and unloading. Polypropylene pellets (PP, 2-3 mm, about 150 kg) was used as power sample. As a result, the maximum surface voltage exceed the 100 kV. And surface voltage decreased by increasing relative humidity.