CFD-simulation-of-hydrodynamics-and-mass-transfer-in-an-internal-airlift-loop-reactor-using-a-steady-two-fluid-model

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1、ChemicalEngineeringScience65(2010)5527–5536ContentslistsavailableatScienceDirectChemicalEngineeringSciencejournalhomepage:www.elsevier.com/locate/cesCFDsimulationofhydrodynamicsandmasstransferinaninternalairliftloopreactorusingasteadytwo-fluidmodela,ba,naaQingshanHu

2、ang,ChaoYang,GengzhiYu,Zai-ShaMaoaKeyLaboratoryofGreenProcessandEngineering,NationalEngineeringLaboratoryforHydrometallurgicalCleanerProductionTechnology,InstituteofProcessEngineering,ChineseAcademyofSciences,Beijing100190,ChinabQingdaoInstituteofBiomassEnergyandBi

3、oprocessTechnology,ChineseAcademyofSciences,Qingdao266101,ChinaarticleinfoabstractArticlehistory:SteadystatesimulationofthehydrodynamicsandmasstransferinbubblyflowinanaxisymmetricReceived22December2009internalairliftloopreactor(IALR)withthespecialtreatmentofinterpha

4、sedecouplingandoutletReceivedinrevisedformboundaryconditionsisperformed,whichisbasedonaFavreaveragingtwo-fluidmodelformultiphase9July2010flow.Differentmodelsofmasstransfercoefficientarecomparedandvalidatedwiththeliteraturedata.Accepted21July2010Amodelfordescribingthem

5、asstransferforawiderangeofsuperficialgasvelocityischosenandtheAvailableonline30July2010predictedmasstransfercoefficientagreeswellwiththeexperimentaldataintheliterature.TheKeywords:numericalprocedurecanbeusedasatoolforthedesignandscale-upofIALRs.Airliftloopreactor&201

6、0ElsevierLtd.Allrightsreserved.BubblyflowTwo-fluidmodelComputationalfluiddynamics(CFD)MasstransfercoefficientInterphasedecouplingalgorithm1.Introductionordertoknowtheeffectsofflowandgeometricparametersonthemasstransferandultimatelyonthereactordesign,optimization,Airlift

7、loopreactors(ALRs)arewidelyusedinprocessandperformance.industriesinrecentyearsbecauseofthefollowingadvantagesTherateofmasstransferbetweengasandliquidisessentialto(HwangandCheng,1997;Bendjaballahetal.,1999;Garcı´a-Calvothereactorperformance.Someresearchersarguedthat

8、higheretal.,1999;Freitasetal.,2000):simpleconstructionwithoutvaluesofvolumetricmasstransfercoefficientkLaoccurathighermovingparts,goodmassandheatt