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Experimental study on the dispersed phase macro-mixing in an immiscible liquid-liquid stirred reactor
Alternative TitleChem. Eng. Sci.
Cheng, Dang; Feng, Xin; Cheng, Jingcai; Yang, Chao; Mao, Zai-Sha
2015-04-14
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume126Issue:APRPages:196-203
Abstract

The spatial nonuniformity of solute concentration in the dispersed phase of immiscible liquid-liquid dispersion is smeared out by coalescence and breakup of drops, which has a very significant effect on the productivity of relevant chemical processes. Novel experiments have been designed to visualize and quantify accurately the macro mixing within the dispersed phase using the planar laser induced fluorescence (PLIF) method combined with a refractive index matching technique in this work. Batch experiments are carried out in a stirred reactor for an electrolytic solution dispersed in silicone oil. It is revealed that the dispersed phase macro mixing behavior differs much from that of the continuous phase of multiphase systems and is heavily dependent upon the drop interaction rate and thus power consumption. The dispersed phase mixing time decreases with the increase of the dispersed phase volume fraction. Dispersed phase mixing time varies inversely with the power consumption per unit volume dispersion. The effect of impeller type on the dispersed phase mixing time is greatly different from that on the continuous/single phase mixing time The effect of radial impeller clearance on the dispersed phase mixing time is contrary to that on the continuous/single phase mixing Lime. (C) 2014 Elsevier Ltd. All rights reserved.

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The spatial nonuniformity of solute concentration in the dispersed phase of immiscible liquid-liquid dispersion is smeared out by coalescence and breakup of drops, which has a very significant effect on the productivity of relevant chemical processes. Novel experiments have been designed to visualize and quantify accurately the macro mixing within the dispersed phase using the planar laser induced fluorescence (PLIF) method combined with a refractive index matching technique in this work. Batch experiments are carried out in a stirred reactor for an electrolytic solution dispersed in silicone oil. It is revealed that the dispersed phase macro mixing behavior differs much from that of the continuous phase of multiphase systems and is heavily dependent upon the drop interaction rate and thus power consumption. The dispersed phase mixing time decreases with the increase of the dispersed phase volume fraction. Dispersed phase mixing time varies inversely with the power consumption per unit volume dispersion. The effect of impeller type on the dispersed phase mixing time is greatly different from that on the continuous/single phase mixing time The effect of radial impeller clearance on the dispersed phase mixing time is contrary to that on the continuous/single phase mixing Lime. (C) 2014 Elsevier Ltd. All rights reserved.

KeywordMixing Time Dispersed Phase Multiphase Stirred Reactor Transport Process Transient Response Turbulence
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2014.12.033
URL查看原文
Indexed BySCI
Language英语
WOS KeywordLASER-INDUCED FLUORESCENCE ; DROP SIZE DISTRIBUTION ; COALESCENCE FREQUENCIES ; AGITATION SPEED ; TANK CONTACTORS ; IMPINGING JETS ; PLIF TECHNIQUE ; FLOW ; SYSTEM ; PIV
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000349448200020
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11713
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Natl Key Lab Biochem Engn, Bening 100190, Peoples R China
Recommended Citation
GB/T 7714
Cheng, Dang,Feng, Xin,Cheng, Jingcai,et al. Experimental study on the dispersed phase macro-mixing in an immiscible liquid-liquid stirred reactor[J]. CHEMICAL ENGINEERING SCIENCE,2015,126(APR):196-203.
APA Cheng, Dang,Feng, Xin,Cheng, Jingcai,Yang, Chao,&Mao, Zai-Sha.(2015).Experimental study on the dispersed phase macro-mixing in an immiscible liquid-liquid stirred reactor.CHEMICAL ENGINEERING SCIENCE,126(APR),196-203.
MLA Cheng, Dang,et al."Experimental study on the dispersed phase macro-mixing in an immiscible liquid-liquid stirred reactor".CHEMICAL ENGINEERING SCIENCE 126.APR(2015):196-203.
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