Computational Fluid Dynamics Simulation and Experimental Measurement of Gas and Solid Holdup Distributions in a Gas-Liquid-Solid Stirred Reactor
Yang, Shifang1,2; Li, Xiangyang1; Yang, Chao1,2; Ma, Bin1,3; Mao, Zai-Sha1
2016-03-30
发表期刊INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
卷号55期号:12页码:3276-3286
摘要The lack of convincing computational fluid dynamics models and basic experimental data makes it difficult to design and scale up a gas liquid solid three-phase stirred reactor such as in environmentally benign bioleaching processes. In this work, a steady state gas liquid solid Eulerian Eulerian multifluid model was developed to predict flow field and local phase holdup distribution. The measurements of gas and solid holdup distributions in a gas liquid solid stirred reactor were simultaneously obtained for the first time by a new improved sample withdrawal technique. The influence of the presence of a second dispersed phase on interphase drag force was taken into account, and good agreement for the local phase holdup was obtained between the predictions and the experimental data. The solid concentration increased, and the gas holdup decreased along the radial direction from the reactor axis to the wall. A simplified bubble-size model considering the effect of turbulence dissipation rate was incorporated in the model instead of a fixed size. It was found that smaller bubbles concentrated in the impeller region, and the bubble size increased near the free surface. The mixing efficiency could be enhanced obviously when double impellers were employed.
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1021/acs.iecr.5b03163
收录类别SCI
语种英语
关键词[WOS]MECHANICALLY AGITATED CONTACTOR ; PARTICLE IMAGE VELOCIMETRY ; BUBBLE-SIZE DISTRIBUTIONS ; CFD SIMULATIONS ; FLOW ; VESSEL ; SUSPENSION ; TANK ; IMPELLER ; TURBINE
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者973 Program(2012CB224806) ; National Natural Science Foundation of China(21276004 ; Major National Scientific Instrument Development Project(21427814) ; 863 Project(2011AA060704) ; 91434126)
WOS记录号WOS:000373519300008
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20995
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.China Univ Min & Technol, Beijing 100083, Peoples R China
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GB/T 7714
Yang, Shifang,Li, Xiangyang,Yang, Chao,et al. Computational Fluid Dynamics Simulation and Experimental Measurement of Gas and Solid Holdup Distributions in a Gas-Liquid-Solid Stirred Reactor[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2016,55(12):3276-3286.
APA Yang, Shifang,Li, Xiangyang,Yang, Chao,Ma, Bin,&Mao, Zai-Sha.(2016).Computational Fluid Dynamics Simulation and Experimental Measurement of Gas and Solid Holdup Distributions in a Gas-Liquid-Solid Stirred Reactor.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,55(12),3276-3286.
MLA Yang, Shifang,et al."Computational Fluid Dynamics Simulation and Experimental Measurement of Gas and Solid Holdup Distributions in a Gas-Liquid-Solid Stirred Reactor".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 55.12(2016):3276-3286.
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