简介：

简介：Inthispaperthemodernelectron-opticalequipmentisusedtotranslatetheclearimageofspeed-movingbubblesinbubblingliquidonasievetrayintothedigitalinformationstoredincomputer,andthecomputeraidedimage-processingtechniqueisutillizedtomeasurethebubblesizedistributionsandinterfacialareasundervariousoperatingcondtions.Andthedynamicbehaviorofbubblesintrubulentliquidisanalyzedtheoretically;themechnaismofbubbledeformationandbreakageisexploredonthebasisofKolmogorff'sisotropicturbulencehypothesis;themathematicalmodelforpredictingthegas-liquidinterfacialareaisproposed,Thecomparisonbetweenthesimulatedresultsandtheexperimentaldatashowthatthemodelishigherinaccuracy,simpleinformandconvenientinuse.

简介：Thespraybehaviorsofthecombinedtrapezoidspraytray(CTST)haveasignificanteffectonthegas-liquidinterface.Inthispaper,thesprayprocessofCTSTinacolumn,570mmindiameter,wasexperimentallyinvestigatedbyusingahigh-speedcamera,andatheoreticalmodeloftheaveragedropletsizewasestablishedaccordingtotheunstablewavetheory.Theresultsdemonstratedthatgasvelocitypassingthroughtheholeisthekeyfactoraffectingthesprayangle,whichincreasesgraduallywithanincreaseinthegasvelocity.Whenthegasvelocityexceeds7.5m/s,thesprayanglebecomesstableataround55°.Theaverageflowvelocityoftheliquidsheetatthespray-holeincreasessignificantlywithanincreaseinthegasvelocity,anddecreasesslightlywithanincreaseintheliquidflowrate;moreover,itincreasesfromthebottomofsprayholeupwardtothetop.ThedensityofliquiddropsdistributioninthesprayareacanbedescribedbytheRosinRammlerfunction.Inaddition,theliquiddropsaremainlyconcentratedintheareaofsprayanglerangingfrom20°to40°,andtheygraduallybecomeuniformwiththeincreaseinthegasvelocityandtheliquidflowrate.Theaverageliquiddropsizedeceaseswithanincreaseinthegasvelocity,andincreasesslightlywithanincreasingliquidflowrate.Inthenormalworkingrange,theaverageliquiddropsizeisabout1.0mmto2.5mmindiameter.

简介：TheVenturi-roddecktrayisatypeofdualflowtraysusedinfluegasdesulfurization(FGD)process.Inthispaper,thehydrodynamiccharacteristicsoftheVenturi-roddecktraywerestudiedintheexperimentsandcomparedwiththeconventionalsievetray.Resultsshowedtheturndownratioofthistraywasintherangeof2.71-3.77,whichwasby9%higherthanthesievetray.Besides,thepressuredropofthistraywasbymorethan50%lowerthanthesievetray.Basedontheexperimentaldata,thecorrelationfunctionsforthepressuredropandthefrothheight,respectively,wereobtained.TheindustrialscaleuppracticeofthistrayinFGDprocesswasdescribedwiththeefficiencyofthistraydemonstrated.

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