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 作者单位： 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： 中国颗粒学报（英文版） ISTIC SCI 英文刊名： CHINESE PARTICUOLOGY 年，卷(期)： 2005 3(4) 分类号： O6 关键词： bubble size vibro-fluidized bed bubble size distribution measurement of bubble