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33720177ElectricPowerScienceandEngineeringVol.33No.7Jul．2017doi10.3969/j.ISSN.1672－0792.2017.07.0082017－03－29。MD2015－01。12323121224231．0460112．0300063．1022064．030006－SSTk－ωN-S。、。3mm5mm120°60°3mm4mm90°120°5mm120°。X701.3A1672－0792201707－0043－09NumericalSimulationforOptimizingFlowFieldofVane-typeMistEliminatorinWetFlueGasDesulfurizationTowerYANGWei12QUJiangyuan3QINana23ＲENJie12WANGＲui12YANGFengling24ZHANGKai231．JinnengGroupChangzhiThermoelectricityCo．Ltd．Changzhi046011China2．ShanxiProvinceEngineeringＲesearchCenterofCleanCoalCombustionforPowerGenerationUnderPreparationTaiyuan030006China3．BeijingKeyLaboratoryofEmissionSurveillanceandControlforThermalPowerGenerationNorthChinaElectricPowerUniversityBeijing102206China4．InstituteofＲesources＆EnvironmentEngineeringShanxiUniversityTaiyuan030006ChinaAbstractThetwo-dimensionalgas-liquidflowcharacteristicsinthesinglechannelbetweentwovanesofthemistelim-inatorinWetFlueGasDesulfurizationsystemaresimulatedinthispaper．TheEulerian-LagrangianapproachisappliedandtheslurrydropletsarecalculatedbyDiscreteＲandomWalkmodelandthegasphaseistreatedbytheＲeynolds-averagedN-SequationstogetherwithShearStressTransportSSTk-ωturbulencemodel．Basedonhydrodynamicscharacteristicsoftwo-phaseflowfieldinthemisteliminatorakindofcomponentinstalledonthevanesofthedemisterisproposed．Theinfluencesoftheheightandapexangleofthenewlyinstalledcomponentonthegasflowdroplettrajec-toriesandtrappingperformancehavebeeninvestigated．Thesimulationresultsindicatethatthetrappingperformanceofthemisteliminatorcanbeenhancedbyintroducingadesiredcomponent．Anincreaseoftheheightfrom3mmto5mmoradecreaseoftheapexanglefrom120°to60°couldimprovetheremovalefficiencyofmisteliminators．Furthermore2017theheightofthecomponenthasasignificantinfluenceontheperformanceofdemisterwhileapexangleplaysarelativelyirrelevantrole．Takingboththedropletremovalefficiencyandpressuredropintoconsiderationtheapexangleranging-from90°to120°isappropriateforthecomponentinheightof3mmand4mmwhilsttheanglewhichhasgreateffectonthepressuredropshouldselectas120°withregardtothecomponentinheightof5mm．Keywordswetfluegasdesulfurizationnumericalsimulationmisteliminatorstructureoptimization0WetFlueGasDesulfurizationWFGDSO2－90%1。WFGDSO2500μm2－3。4。2－6。、、7－9、、。Com-putationalFluidDynamicsCFD10211－13CFD、。Zamora114k－εk－ωSSTk－ω127－9k－ε10μm60μm20μm2ＲNGk－ε13Ｒek－ε。10μm30μmSSTk－ω。111.1D=26mm121。2BD。H447αH3mm、4mm、5mmα60°、90°、120°。21.2、、10.1132ZZ0814315457－916～7m/svin3～6m/s6。1.3－SSTk－ω。。D=26mmＲe534010680LauderSpalding2×104。ρg→vg=01ρg→vg→vg=－p+τ+τＲ→+B2ρg→vgpττＲ→B16。Wang17STDk－εZamora11、Galletti18SST。。SSTk－ω。SSTk－ωkωN-Sρg→kvg=Γkk+Gk－Yk+Sk3ρgω→vg=Γωω+Gω－Yω+Dω+Sω4ΓkΓωkωGkGωωYkYωkωDωSkSω。10～30μmSaffman4Basset17、、Saffmand→vpdt=FD→vg→－v()p+→gρp－ρgρp→+FS5FD=1τpCDＲe246FD→vg→－v()p→g→FSSaffmanCD542017Ｒeτp。→FS=2Kν1/2ρgdijρgdpdlkdkl1/47CD=0.424Ｒe＞100024Ｒe1+16Ｒe2/()3Ｒe≤{10008Ｒe=ρpdp→vp→－vgμg9τp=ρpd2p18μg10→FS19νdp。5。1.4ρg1.225kg/m3μg1.789×10－5N·s/m2。vin3～6m/s5%10%～20%0Pa。ρp1200kg/m38dp10μm、12.5μm、15μm、17.5μm、20μm、22.5μm、25μm、30μm。Qin=0.05·v·D12－13ηη=Qin－QeQin11Qinkg/sQekg/s。AnsysFluent15.0SIMPLE。1.5。Ｒafee20Zamora11y+y+0.2～0.5。ICEMCFDy+0.50.02mm。3vin6m/s2.8×104I、4.5×104II6.8×104IIIY=0.15mX。2.8×1044.5×10450%6.8×1044.5×104。3Y=0.15m1.6。5vin3m/s6m/s。4dp=20μmY=0.15mX。。。417－18。647422.153m/s6m/s。CE3m/s6m/sCE。5dp10μm、12.5μm、15μm、17.5μm、20μm、22.5μm、25μm、30μm8dp=15μm5005。3m/s6m/s。BDCE。113～6m/sdp=15μm40%。21DD、E。2。IBCCⅡDE10～20mmIEⅡD。2.267H。H7vin=6m/sH3mm5mm13m/s16m/s。vin=3m/svin=6m/s742017。678H15μm500。vin=3m/sBDHD13vin=6m/svin=3m/sHBH5mmC。H。HH。815μm9H210%。H。2210τp4。9cvin=5m/s2I4mm、4mmII8mm、4mm。8mmH=4mm5mm15μm20μm4mmH。8479H2.3α10α。Hα。11Iα=120°10αα。H942017α。vin=4m/sH=3mm、α=120°dp=17.5μm65.26%vinHα60°81.21%vinαH5mmdp=17.5μm92.04%。2.41D=26mm7。Hα。235、64HαXα120°α1123－24。1PaHαvin=3m/svin=4m/svin=5m/svin=6m/s3mm60°10.2918.3128.7141.2290°9.2016.3625.6836.82120°9.6617.0726.6638.224mm60°15.1226.9142.0860.7190°13.5224.0337.5354.13120°11.0919.5830.4343.7560°22.5240.0462.5890.265mm90°19.7435.0654.8878.90120°15.6827.3242.3960.87－88132230－9.1614.3121.7030.02/%14.5010.081.300.07H=3mmα120°90°。11α120°90°α=120°α=90°。2vin=5m/sI70Pa118。24－6H=3mmH=4mmαα90°≤α≤120°H=5mmαα=60°200%α10α=120°。3Hα1。2HαHα。3。H=3mmH=4mm057α90°≤α≤120°H=5mmαα=120°。1．“”J．201531625－27．2．J．201636159－64．3．J．201632127－30．4．J．201030868－75．5ESTAKHＲSAＲMHHＲAFEEＲ．Effectsofwave-lengthandnumberofbendsontheperformanceofzigzagdemisterswithdrainagechannelsJ．AppliedMathe-maticalModelling2016402685－699．6NAＲIMANIESHAHHOSEINIS．OptimizationofvanemisteliminatorsJ．AppliedThermalEngineering2011312188－193．7．D．2009．8．D．2010．9．J．200926471－75．10．CFDJ．201329546－50．11ZAMOＲABKAISEＲAS．Comparativeefficiencye-valuationsoffourtypesofcoolingtowerdrifteliminatorbynumericalinvestigationJ．ChemicalEngineeringScience20116661232－1245．12．J．201465124669－4677．13．J．2010301461－67．14VENKATESANGKULASEKHAＲAMNINIYANS．Numericalanalysisofcurvedvanedemistersinestima-tingwaterdropletseparationefficiencyJ．Desalina-tion201433933940－53．15MAＲOCCOL．Modelingofthefluiddynamicsa