超聲波氣升式內環(huán)流反應器流體力學性能和傳質性能的研究.pdf

1、南京工業(yè)大學碩士學位論文超聲波氣升式內環(huán)流反應器流體力學性能和傳質性能的研究姓名：湯立新申請學位級別：碩士專業(yè)：化學工程指導教師：呂效平2002.6.1ABSTRACTTheairliftreactorshavewidelybeenusedforchemicalindustrybiologicalchemistryphotochemicalreactionmetallurgyandSOonbecauseofitsoperationalp

2、rincipleanduniquestructureInordertodesignandenlarge’ALR，researchershavestudiedandobservedthehydrody’namicsandtransfercharacteristicsofALRfrommaterialcharacter幻operationalconditiontostructureUltrasonictechnologyactedasame

3、chanicalenergyhaswidelybeenusedforindustrymedicineetcInlandWangqianappliedultrasonicwavetOALRinordertoextractsulfateradicalpolysaccharidefromLaminafiaJaponicaInodertowidenapplicationareaofALR，thehydrodynamicsandtransferc

4、haracteristicsofALRwerestudiedandobservedinthiswork，ultrasonicprobeisplacedthebottomofALRUltrasonicairliftreactorhasthesameperformanceasthecommonairliftreactorsInsmallgasvelocityultrasonicwavehasdefiniteinfluenceonthehyd

5、rodynamicsandtransfercharacteristicsofALRLiquidcirculationvelocitywassaaduailydiminishedalongwithultrasonicpowerincreasing；MixingtimeWasdiminishedandthenincreasedalongwithultrasonicpoweriricreasing；Volumetric／／laSStransf

6、ercoefficientwasincreasedalongwithultrasonicpowerincreasing；ButultrasonicwavehasnoinfluenceongasholdupbecauseultrasonicwaveonlybreakdownairbubbleroundprobeWhilebiggergasvelocityultrasonicwavehasnobiginfluenceonthehydrody

7、namicsandmasstransfercharacteristicsofALRWhengasvelocityisbig，thekineticenergyofgasisbiggerthanthatofultrasoundItcausessmallerinfluenceofultrasoundonhydrodynamicsandmasstransfercharacteristicsinairliftreactorTheexperimen

8、taldatawerecorrelatedbySTATICTICAThecorrelationsofhydrodynamicsandmasstransfercharacteristicsofultrasonicairliftloopreactorwereobtainedUltrasonicpressurewasmeaSuredusingwateracousticapparatus，whichchangedalongwithaxialdi