Influence of Electrostatics on Instrumentation in Fluidized Bed Measurements
In fluidized bed, electrostatics is a common phenomenon due to the frequent collisions among solid particles, as well as between solid particles and the wall. It can cause serious problems for fluidized beds, altering hydrodynamics, causing agglomeration, interfering with instrumentation, generating nuisance discharges and even creating the danger of explosions. Despite these negative effects of electrostatics, current understanding on this subject is far from completion. The present study will focus on electrostatics in fluidized bed. Through our experimental study, it is found that the strong electrostatics can greatly affect the instrumentation and can easily lead to the terminations of data acquisitions. With increasing fluidizing air velocity, the generated electrostatics is increased rapidly. In order to reduce the influence of electrostatics, the non-conductive tape is adhered to the inner walls of fluidized bed, and the generated electrostatics is greatly decreased, as such the instrumentation can also work continuously.
Fluidized Bed Electrostatics Electrical Capacitance Tomography
Yongpan Cheng Chi-Hwa Wang
Department of Chemical and Biomolecular Engineering National University of Singapore, 4 Engineering Drive 4, Singapore 117576
国际会议
The 7th International Symposium on Measurement Techniques for Multiphase Flows(第七届国际多相流测试技术会议)
天津
英文
335-341
2011-09-17（万方平台首次上网日期，不代表论文的发表时间）