Control of Electrostatic Charge on Particles by Impact Charging

The control of electrostatic charge on particles in gas-solids pipe flow has been studied experimentally and theoretically. Alumina particles of 3.3μm in mass median diameter were dispersed in airflow and pneumatically transported in dilute phase. Five different materials were used for the transport...

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Bibliographic Details
Published inFuntai Kogakkaishi Vol. 43; no. 3; pp. 160 - 168
Main Authors Matsusaka, Shuji, Oki, Mitsuhiro, Masuda, Hiroaki
Format Journal Article
LanguageEnglish
Published The Society of Powder Technology, Japan 2006
Subjects
Charge control
Charge distribution
Electrostatics
Gas-solids pipe flow
Impact charging
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Summary:The control of electrostatic charge on particles in gas-solids pipe flow has been studied experimentally and theoretically. Alumina particles of 3.3μm in mass median diameter were dispersed in airflow and pneumatically transported in dilute phase. Five different materials were used for the transport pipes, and the relationships between the particle charge and the pipe length were obtained. The polarity and the amount of particle charge were found to depend on the pipe material and the length. In order to control the particle charge, a system combining two different pipe materials was proposed depending on the particle charging characteristics. The particle charge controlled by this method was in good agreement with the theoretical calculation, in which the distribution of particle charge as well as the average was well estimated.
ISSN:0386-6157
1883-7239
DOI:10.4164/sptj.43.160