Experimental measurement and theoretical analysis on bubble dynamic behaviors in a gas-liquid bubble column

被引：30

作者：

Zhou, Yefeng ^{[1
,2
,3
]}

Kang, Panxing ^{[1
]}

Huang, Zhengliang ^{[2
,3
]}

Yan, Pan ^{[2
,3
]}

Sun, Jingyuan ^{[2
,3
]}

Wang, Jingdai ^{[2
,3
]}

Yang, Yongrong ^{[2
,3
]}

机构：

[1] Xiangtan Univ, Chem Proc Simulat & Optimizat Engn Res Ctr, Natl & Local United Engn Res Ctr Chem Proc Simula, Minist Educ, Xiangtan 411105, Peoples R China

[2] Zhejiang Univ, State Key Lab Chem Engn, Hangzhou 310027, Zhejiang, Peoples R China

[3] Zhejiang Univ, Coll Chem & Biol Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

CHEMICAL ENGINEERING SCIENCE | 2020年 / 211卷

基金：

中国国家自然科学基金;

关键词：

PTV and HSI; Bubble column reactors (BCRs); Bubble dynamic behaviors; Gas-liquid interactions; Bubble terminal velocity; Bubbly flow radial distribution patterns; SIZE DISTRIBUTION; SINGLE BUBBLES; RISE VELOCITY; TERMINAL VELOCITY; PARTICLE TRACKING; AIR BUBBLES; MODELS; FLOW; COALESCENCE; SIMULATION;

D O I：

10.1016/j.ces.2019.115295

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Bubble dynamic behaviors have significant effects on the interfacial area between gas and liquid phases, the gas-phase residence time and the efficiency of heat and mass transfer. This study mainly investigated the single bubble dynamic behaviors and the radial distribution patterns of bubbly flow in a bubble column through Particle Tracking Velocimetry (PTV) and High Speed Imaging (HSI). As the results indicate, with the bubble size increasing, bubble deformation and bubble rising velocity are intensified and bubble trajectories change accordingly. Meanwhile, theoretically calculated values of single bubble terminal velocities are in accord with experimental values. According to the study, gas-liquid interaction has a noticeable impact on multiple radial distribution patterns of bubbly flow, including bubble size, velocity, the number of small bubbles and the width of gas-liquid interaction region. Finally, a correlation is proposed in this work to predict the width of gas-liquid interaction region based on a dimensionless analysis. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：12

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