Study on flow characteristics and phase holdup in a slurry bubble column coupled with mild agitation Author links open overlay panel  

作　　者：Qingyuan An Jiantao Li Lei Zhang Nailiang Wang Pengfei Zhang Zhenghong Luo Chunxi Lu 

机构地区：[1]State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering,Ningxia University,Yinchuan,750021,China [2]State Key Laboratory of Heavy Oil Processing,College of Chemical Engineering and Environment,China University of Petroleum Beijing,Beijing,102249,China [3]Department of Chemical&Biological Engineering,Monash University,Victoria,3800,Australia

出　　处：《Particuology》2024年第8期226-234,共9页颗粒学报（英文版）

基　　金：supported by National Natural Science Foundation of China(grant Nos.22308171,21968023);State Key Laboratory of Heavy Oil Processing,China University of Petroleum(grant No.WX20230157);Special Projects of the Central Government Guiding Local Science and Technology Development(grant No.2022FRD05017).

摘　　要：A pilot-scale experimental setup was constructed to investigate the effect of mild agitation on the bubble characteristics and phase holdup in a slurry bubble column.Mild agitation positively impacts the axial uniform distribution of solid holdup,though it shows insignificant influence on the radial distribution.In homogenous regime,mild agitation promotes the coalescence of bubbles,and the effect becomes stronger with increasing agitator speed.The mild agitation contributes to a decrease in bubble size in heterogeneous flow regime.Mild agitation presents a significant effect on the gas holdup by adjusting the bubble size and bubble motion trajectory.The modification was introduced to predict the gas holdup considering the effects of mild agitation,a necessary consideration for applications requiring mild agitation.This adapted model predicts gas holdup with a maximum error of 12.9%.

关 键 词：Slurry bubble column Mild agitation Phase holdup Bubble characteristics 

分 类 号：TQ027[化学工程]