BUBBLE CHARACTERISTICS IN A TWO-DIMENSIONAL VERTICALLY VIBRO-FLUIDIZED BED

Measurement of bubble size and local average bubble rise velocity was carried out in a vertically sinusoidal vibro-fluidized bed. Glass beads of Geldart group B particles were fluidized at different gas velocities, while the bed was vibrated at different frequencies and amplitudes to study their effects on the bubble behavior. This is compared with the case of no vibration in a two-dimensional bed and it is concluded that with vibration the local average bubble size,dbav, decreases significantly, especially at minimum bubbling velocity. The average bubble size increases slightly with increasing vibration frequency and amplitude. The local average bubble rise velocity is higher than that with no vibration,though with increasing vibration frequency and amplitude, it does not change significantly.

作 者： Tao Zhou Hiroyuki Kage Hongzhong Li   作者單位： Tao Zhou(College of Chemistry & Chemical Engineering, Central South University, Changsha 410083, P. R. China)

Hiroyuki Kage(Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan)

Hongzhong Li(Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, P. R. China) 

刊 名： 中國顆粒學報（英文版）  ISTIC SCI 英文刊名： CHINESE PARTICUOLOGY  年，卷(期)： 2005 3(4)  分類號： O6  關鍵詞： bubble size   vibro-fluidized bed   bubble size distribution   measurement of bubble  

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