装配水平筛板的气升式反应器中气液传质特性的数值模拟

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王子凡¹，郑志永^1,2*，高敏杰¹，李想¹，詹晓北¹

1. 江南大学生物工程学院，工业生物技术教育部重点实验室，江苏无锡 2141222. 江南大学环境与土木工程学院，江苏无锡 214122

收稿日期:2019-02-27修回日期:2019-04-25出版日期:2020-01-22发布日期:2020-01-14
通讯作者:郑志永

基金资助:中央高校基本科研业务费专项资金资助项目

Numerical simulation of mass transfer characteristics in an airlift reactor with a horizontal sieve plate

Zifan WANG¹, Zhiyong ZHENG^1,2*, Minjie GAO¹, Xiang LI¹, Xiaobei ZHAN¹

1. Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, China2.School of Environment and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China

Received:2019-02-27Revised:2019-04-25Online:2020-01-22Published:2020-01-14
Contact:Zhi-Yong Zheng

摘要/Abstract

摘要： 利用Turbulent–Lehr组合模型对装配水平筛板的气升式反应器进行了计算流体力学(CFD)模拟，研究水平筛板对气含率、气泡直径、体积传质系数(kLa)和气液流速的影响。结果表明，筛板对气相的囤积作用和对液相的阻碍作用增加了反应器的整体气含率。筛板对气相的二次均布作用减弱了筛板和液面之间区域的气泡聚并过程，筛板筛孔对气泡的破碎作用产生了大量小于初始直径的气泡，增加了气泡比表面积(a)；筛板对液相的阻碍作用提高了筛板附近的气–液相流动速度差，从而提高了该区域的液膜传质系数(kL)，强化了反应器内的气液传质效果。

引用本文

王子凡郑志永高敏杰李想詹晓北. 装配水平筛板的气升式反应器中气液传质特性的数值模拟[J]. 过程工程学报, 2020, 20(1): 20-26.
Zifan WANG Zhiyong ZHENG Minjie GAO Xiang LI Xiaobei ZHAN. Numerical simulation of mass transfer characteristics in an airlift reactor with a horizontal sieve plate[J]. Chin. J. Process Eng., 2020, 20(1): 20-26.

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