兩相流雙列葉片式氣體分布器的研究.pdf

1、天津大學(xué)碩士學(xué)位論文兩相流雙列葉片式氣體分布器的研究姓名：栗國福申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工程指導(dǎo)教師：干愛華201006ABSTRACTPackedcolumnhavebeenbroadlyappliedinindustrialproductionbecauseofhi曲capacity，lowpressuredrop，smallliquidholdup，greatturndownratio，excellentseparatione

2、fficiencyisGasdistributorisanimportantcolumninternals，itsperformancedirectlyaffectstheseparationefficiencyandproductqualitytheTwo—LineVaneGasDistributoriswidelyusedinthepackedcolumnforitsexcellentperformanceInthispaperwe

3、usedtheComputationalFluidDynamics(CFD)sot!l、】varetosimulatetheflowstatearoundTwoLineVaneGasDistributorincolumnwithdiameterof2200mmSinglephaseflowsimulation：Inordertofindthebeststructureofthedistributorwestudiedtheinfluen

4、ceofdistanceofvaneoffsetinYdirectionthedistanceofthefirstvanesawayfromthetowerwall，positionofabsentvaneOntheperformanceofthedistributorTheresultsshowthat：DistanceofvaneoffsetinYdirectionincreases，thepressuredr叩decreasefi

5、rstlythenincrease，maldistributionfactordecreasesfirstlythenincreases；Thedistanceofthefirstvanesawayfromtowerwallincreases，thepressuredropincreases，maldistributionfactordecreasesfirstlyandthenincreases；thepositionofabsent

6、vanenincreases，thepressuredropisessentiallythesame，maldistributionfactordecreasesfirstlythenincreases；performanceofthedistributorwithoutuppercoverisworsethantheonewithuppercoverTwophaseflowsimulation：Onthebasisoftheactua

7、lsituationweusetheEulerLagrangem武hod(thediscretephasemodel)tosimulatetwophaseflowinthetowerwimdiameter2200mmWedotheinvestigationintheinfluenceofdiscretephaseparticlesizeandfeedrateondistributor’Sperformance0nthebasisofsi

8、ngle—phaseflowandtwophaseflowsimulationresults，wesummarizethephysicalcharacteristicsofthecontrastrulesasfollows：thediscretephaseincreasedmaldistributionfactor；decreasesthepressuredrop，reducetheaverageturbulentkineticener