大型填料塔槽式液體分布器的實驗研究與流體力學(xué)模擬計算.pdf

1、天津大學(xué)碩士學(xué)位論文大型填料塔槽式液體分布器的實驗研究與流體力學(xué)模擬計算姓名：安海靜申請學(xué)位級別：碩士專業(yè)：化學(xué)工程指導(dǎo)教師：徐世民20031201ABSTRACTInthisthesis，theexperimentalmethodandcomputationalfluiddynamics(CFD)simulationhavebeenusedtoinvestigateuniformfluiddistributioninthelarges

2、caleslotliquiddistributorwhichcanprovidetheoreticaldataandprooftothedesignofthelarge—scaleslotliquiddistributorAtthebasesofhydrodynamicsexperimentsonthelarge—scaleindustrialslotliquiddistributorthemainfactorswhichresulti

3、nliquidmaldistributionhavebeenfound，thensomeeconomicalandfeasiblealterationmeasuresarebroughtforward，themaincontentsofCFDsireulationaredescribedasfollow：oneistheresearchofslotliquiddistributorfeedinletmode；theotheristhes

4、tudyofliquidbaffleontheoutletofsecondslotsFromthehydrodynamicexperiments，itCanbeconcludedthatonhigherliquidloadthelargescaleindustrialslotdistributorleadstofearfulliquidmaldistributionItisappropriatetoaddflexuralbafflein

5、thefirstslotsandchangeoutletholedistributingonthefeedpipe，whichtheexperimentaldatahavejustified，attheSalUetime，itcarlalsobeusedforreferencebyotherslotliquiddistributorsteviseadversefactorscausedbyhigherliquidload，tominim

6、izetheinfluencetostaticliquiddistributorowingtoliquidflowageTheinitialliquiddistributionintheslotdistributorsisverycriticaltothefinaldistributionqualityDuringthesimulationtothefeedinletmode，it’Svalidatedthatperforatedpip

7、eCannotprovidecompletelyuniformdistribution，ifnecessarythevariationaloutletholediameterisrecommendedforinitialfeedpipe；distributaryhavemoreinfluenceonmiddleinletfeedmode，whichcanbeweakenedbyaddcushionpart；differentliquid

8、outletarealeadstodifferentdistributionqualityhowtochooseappropriateoutletareaisalsoworkedoverthroughcontrastivemethodSomelimitationhasbeenfoundonthetraditionalliquidbaffleunderhigherliquidflowspeednearthesecondslotsoutle

9、t，whichresultsinalterationofstreampositionandisbadfordistributionqualityThenewtypeliquidbaffleCanimproveliquiddistributionformathigherliquidload，providingbetterliquiddistributionperformanceinthepracticaldesignandmanufact