Bubble characteristics in a two-dimensional vertically vibro-fluidized bed--颗粒学报PARTICUOLOGY

Zhou, T., Kage, H., & Li, H. (2005). Bubble characteristics in a two-dimensional vertically vibro-fluidized bed. China Particuology, 3(4), 224-228. https://doi.org/10.1016/S1672-2515(07)60191-2

Bubble characteristics in a two-dimensional vertically vibro-fluidized bed

Tao Zhou^a *, Hiroyuki Kage ^b, Hongzhong Li ^c

a College of Chemistry & Chemical Engineering, Central South University, Changsha 410083, P. R. China
b Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu 804–8550, Japan
c Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, P. R. China

10.1016/S1672-2515(07)60191-2

Volume 3, Issue 4, August 2005, Pages 224-228

Received 21 October 2004, Accepted 29 March 2005, Available online 14 December 2007.

E-mail: zhoutao@mail.csu.edu.cn

Highlights

Abstract

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.

Graphical abstract

Keywords

bubble size; vibro-fluidized bed; bubble size distribution; measurement of bubble

文章导读