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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
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume55Issue:12Pages:3276-3286
AbstractThe 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.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acs.iecr.5b03163
Indexed BySCI
Language英语
WOS KeywordMECHANICALLY AGITATED CONTACTOR ; PARTICLE IMAGE VELOCIMETRY ; BUBBLE-SIZE DISTRIBUTIONS ; CFD SIMULATIONS ; FLOW ; VESSEL ; SUSPENSION ; TANK ; IMPELLER ; TURBINE
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding Organization973 Program(2012CB224806) ; National Natural Science Foundation of China(21276004 ; Major National Scientific Instrument Development Project(21427814) ; 863 Project(2011AA060704) ; 91434126)
WOS IDWOS:000373519300008
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20995
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.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
Recommended Citation
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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