油性微乳液的循环气升式反应器的流体力学和传质性能研究(英文)

油性微乳液的循环气升式反应器的流体力学和传质性能研究(英文)Fluid Dynamics and Mass Transfer Performance of Stirred Tank Reactor f

油性微乳液的循环气升式反应器的流体力学和传质性 () 能研究英文 FluidDynamicsandMassTransferPerformanceofStirred TankReactorforOilyEmulsion Introduction Thecirculationgas-liftstirredtankreactoriswidelyusedin thechemicalindustryfortheproductionofemulsions,polymers, andpharmaceuticals.Thereactordesignplaysacrucialrolein determiningtheefficiencyandeffectivenessoftheprocess.Inthis study,weinvestigatethefluiddynamicsandmasstransfer performanceofacirculationgas-liftstirredtankreactorfor producingoilyemulsions. FluidDynamicsPerformance Thefluiddynamicsperformanceinthecirculationgas-lift stirredtankreactorismainlydeterminedbytheflowpatternsand velocities.Theflowpatternsandvelocitiesareinfluencedbythe gasandliquidflowrates,thegeometryofthereactor,andthe propertiesofthefluid.Ingeneral,theflowpatternsinthereactor canbeclassifiedasslugflow,bubblyflow,churnflow,andannular flow.Theflowpatternandvelocityaffectthemixingofthe reactantsandthedistributionofthereactantsinthereactor, whichinturn,affectsthemasstransferperformanceandchemical reactions. Toinvestigatetheflowpatternsandvelocitiesinthe circulationgas-liftstirredtankreactor,weperformed computationalfluiddynamicssimulationsusingANSYSFluent software.Thesimulationresultsshowedthatthereactoroperated inthechurn-turbulentflowregime,withameanflowvelocityof 0.2m/s.Thecirculatinggasflowratewasfoundtobethemain factorcontrollingthefluidvelocityandflowpatterninthereactor. Additionally,thereactor'sgeometryalsoaffectedtheflowpattern, withthepositionofthegasspargerhavingasignificantimpacton theflowpatternsandvelocities. MassTransferPerformance