Retrospect and Perspective of Micro-mixing Studies in Stirred Tanks

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (1): 178-190.

Retrospect and Perspective of Micro-mixing Studies in Stirred Tanks

程景才, 冯鑫, 程荡, 杨超

Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2011-10-10 修回日期:2011-11-14 出版日期:2012-02-28 发布日期:2012-05-03
通讯作者: YANG Chao,chaoyang@home.ipe.ac.cn
基金资助:
Supported by the State Key Development Program for Basic Research of China (2010CB630904);the National Natural Science Fund for Distinguished Young Scholars (21025627);the National Natural Science Foundation of China (21106154,20990224);the National High Technology Research and Development Program of China (2011AA060704);the Beijing Natural Science Foundation (2112038) and Jiangsu Province Project (BY2009133)

Retrospect and Perspective of Micro-mixing Studies in Stirred Tanks

CHENG Jingcai, FENG Xin, CHENG Dang, YANG Chao

Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

Received:2011-10-10 Revised:2011-11-14 Online:2012-02-28 Published:2012-05-03
Supported by:
Supported by the State Key Development Program for Basic Research of China (2010CB630904);the National Natural Science Fund for Distinguished Young Scholars (21025627);the National Natural Science Foundation of China (21106154,20990224);the National High Technology Research and Development Program of China (2011AA060704);the Beijing Natural Science Foundation (2112038) and Jiangsu Province Project (BY2009133)

摘要/Abstract

摘要： Mixing problems are most likely encountered and sometimes can be severe in scaling-up projects.Micro-mixing is an important aspect for fast or quasi-instantaneous reactions.Poor micro-mixing might produce more undesired by-products,leading to higher purification costs.This paper gives an extensive review and analysis of micro-mixing studies in single-and multiphase stirred tanks.The relevant experiment techniques,micro-mixing models and numerical approaches are critically reviewed and analyzed with remarks and perspectives.The reported studies on two-phase micro-mixing experiments and on the impact of the presence of the dispersed phases on turbu-lence have been limited to a narrow range of conditions.More importantly,disparities widely exist among different reports.Both Lagrangian and Eulerian models are based on oversimplified assumptions,which may lead to uncertainties or even unrealistic results.A heuristic model,which is from the perspective of CFD(computational fluid dynamics) and can cover the whole spectrum of scales and also focus on every sub-process,is desired in the future.

关键词: micro-mixing, multiphase, micro-mixing model, stirred tank, computational fluid dynamics

Abstract: Mixing problems are most likely encountered and sometimes can be severe in scaling-up projects.Micro-mixing is an important aspect for fast or quasi-instantaneous reactions.Poor micro-mixing might produce more undesired by-products,leading to higher purification costs.This paper gives an extensive review and analysis of micro-mixing studies in single-and multiphase stirred tanks.The relevant experiment techniques,micro-mixing models and numerical approaches are critically reviewed and analyzed with remarks and perspectives.The reported studies on two-phase micro-mixing experiments and on the impact of the presence of the dispersed phases on turbu-lence have been limited to a narrow range of conditions.More importantly,disparities widely exist among different reports.Both Lagrangian and Eulerian models are based on oversimplified assumptions,which may lead to uncertainties or even unrealistic results.A heuristic model,which is from the perspective of CFD(computational fluid dynamics) and can cover the whole spectrum of scales and also focus on every sub-process,is desired in the future.

Key words: micro-mixing, multiphase, micro-mixing model, stirred tank, computational fluid dynamics

中图分类号:

TQ027.2

程景才, 冯鑫, 程荡, 杨超. Retrospect and Perspective of Micro-mixing Studies in Stirred Tanks[J]. Chinese Journal of Chemical Engineering, 2012, 20(1): 178-190.

CHENG Jingcai, FENG Xin, CHENG Dang, YANG Chao. Retrospect and Perspective of Micro-mixing Studies in Stirred Tanks[J]. Chin.J.Chem.Eng., 2012, 20(1): 178-190.

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Retrospect and Perspective of Micro-mixing Studies in Stirred Tanks

Retrospect and Perspective of Micro-mixing Studies in Stirred Tanks

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