氣液固三相循環(huán)流化床中蒽醌加氫反應(yīng)的研究.pdf

1、天津大學碩士學位論文氣液固三相循環(huán)流化床中蒽醌加氫反應(yīng)的研究姓名：范雙雙申請學位級別：碩士專業(yè)：化學工藝指導(dǎo)教師：王蒞20070101ABSTRACTExperimentswereperformedinairanthraquinoneworkingsolution弋|K1203particlessystemtothestudyeffectsofoperationconditionsonhydrodynamicsparametersGas

2、holdupincreasedwiththeincreaseofsuperficialgasvelocityandsuperficialslurryvelocityButsuperficialgasvelocityhadmoreobviouseffectsthanthesuperficialslurryvelocityAnempiricalcorrelationwasdevelopedtoaccountforthegasholdupth

3、roughexperimentaldataAxialsoliddistributionWasstudiedwithdifferentsuperficialflowvelocitiesThesedimentation—dispersionmodelwasusedtodescribetheaxialsoliddistributionThemaximumrelativeerrorbetweensimulatedvalueandexperime

4、ntalvaluewasl168％，andtheaveragerelativeerrorwas575％ThebubblerisevelocitywasinvestigatedTheresultsshowedthatbubblerisevelocityincreasedwithincreasingsuperficialgasvelocitybutdecreasedwithincreasingsolidconcentrationLiquid

5、circulationrateincreasedwithincreasingsuperficialgasvelocityParticledistributionwasstudiedAlongthebedheight，theparticledistributionchangedwithsuperficialgasvelocityHydrogenationreactioninhydrogenanthraquinone—Pd／yA1203pa

6、rticlesthreephasesystemwasstudiedTheexperimentalresultsshowedthatbotllethylanthraquinone(EAQ)conversionandH202spacetimeyieldbothincreasedwithincreasingsuperficialgasvelocityandwithincreasingreactiontemperatureCatalyststa

7、bilitywasanalyzedinreactiontimeThereactionfeatureinthreephasefluidizedbedwasstudiedbycatalystcharacterization，suchasXPS，XRD，SEMTwomodelswereusedtosimulatehydrogenationinthreephasefluidizedbedwiththegasphaseassumedtobeinp

8、lugflowandtheliquidphaseinplugflow(P—Pmodel)orinbackmixedflow(PMmodel)ComparisonbetweencalculatedandexperimentalresultsshowedthatPMmodelWasmoreaccuratethanPPmodelAndtheinfluencesofdifferentparametersonreactorperformancew

9、ereinvestigatedbasedonPMmodelThegasconcentrationalongthebedWasstudied111epreferencetemperatureofthereactionWasbetween6070“(2EAQconversionandH202spacetimeyieldbothincreasedwithincreasingsuperficialgasvelocityKEYWoRDS：gasl