灰钙循环烟气脱硫反应器气固两相流动数值模拟_龚艳艳

212Vol.21No.220153CleanCoalTechnologyMar．20151231231231231231231．1000132．1000133．100013CFDFluentk－ε。90%20t/h1．7%。。TQ534．9A1006－6772201502－0117－05Numericalsimulationifgas－solidtwo－phaseflowincirculatingfluegasdesulfurationreactorGONGYanyan123WANGNaiji123XIAOCuiwei123ZHANGXin123LITing123YUQinghang1231．EnergySavingEngineeringTechnologyBranchCoalScienceandTechnologyResearchInstituteCo．Ltd．Beijing100013China2．StateKeyLaboratoryofHighEfficientMiningandCleanUtilizationofCoalResourcesChinaCoalResearchInstituteBeijing100013China3．NationalEnergyTechnologyandEquipmentLaboratoryofCoalUtilizationandEmissionControlChinaCoalResearchInstituteBeijing100013ChinaAbstractThegas－solidtwo－phaseflowandflowfieldcharacteristicsofactivecalciumcirculatingfluegasdesulfurationFGDreactorwerethekeyfactorswhichinfluenceddirectlydeviceoperation．Thek－εturbulencemodelwasusedtomakenumericalsimulationofthereactor．Theresistanceindifferentpartsofreactorandflowfielddistributionweredetermined．Theresultsshowedthattheinletofcirculat-ingmaterialshadmajorimpactontheflowfieldthepercentageofthefeedportresistanceintotalresistancewasmorethan90%．There-sultswereverifiedon20t/hFGDreactor．Thenumericalresultsofairvelocityandstaticpressureshowedgoodagreementwithmeasuringresults．Thesimulationvariationrateofthefeedportresistancewas1．7%．Atthesametimethereactorstructurehasbeenoptimizedfordual－inlet．Keywordsfluegasdesulfurationactivecalciumcirculatingfluegasnumericalsimulationgas－solidtwo－phaseflowstructureoptimi-zation2015－01－26DOI10．13226/j．issn．1006－6772．2015．02．02720122012DFA608602011CX032014CX031990—。[e-mail]－solidtwo－phaseflowincirculatingfluegasdesulfurationreactorJ．CleanCoalTechnology2015212117－121．0。、、。。7112015221LurgiCFD－FGD、WulffRCFD－FGD、FLSGASABBNID。、。12－3。CFD。CFD4。21。Discrete－Particle－ModelTwo－Fluid－Model5。。11.11。。6－7。20t/h2。8。、。ICEMCFD14.0920t/h。10。1220t/h1.24。k－ε。100m/sFlunt。0.1－DPMRosin－Rammler。1.3ICEMCFD14.020t/h。16328790.5。k－ε11－12－SIMPLE811201521.0×10－4。20m/s－500Pa。20m/s－500Pa30kg/sxy8m/s。13。0.0214。22.1Fluent14.015。3。3a50～60m/s20m/s。3b。3c、3d16。2.22△P=PB－PAPa。17ρgΗ1+ρu212+P1=ρgΗ2+ρu222+P2+Pf1ρkg/m3g9.81m/s2H1、H21、2mu1、u21、2m/sP1、P2A、BPaPfABPa。△PPfρgH2－H1ρu22－u212Pf=ΔP－ρgH2－H1－ρu22－u21223Pf=ΔP－ρgH2－H132A、B、C3－687－1267－1491Pa580224Pa354919Pa。2.3、91120152212A、BC。、。4。4Pf=λ×LD×ρu22λLmDmμm/s。50m/s700Pa。25180m3/h30Pa。。1。1/Pa/Pa/%58019977003096/%1.736.7—190%。1.7%11Pa36.7%。。35。5ICEM、15kg/syz8m/s6。6a50m/s20m/s。6b。6c、6d。4150～60m/s20m/s。。。290%。7.8%20Pa。3021201526。1．J．2010391104－108．2．CFB－FGDJ．2013369154－158．3．J．200626712－19．4．J．200726526－29．5．M．1993．6．J．201319581－84．7．J．2007271117－121．8．CFDJ．2005341234－37．9．ANSYSICEMCFDM．201475－90．10．D．201323－26．11．D．201133－40．12．D．200537－45．13．D．200640－50．14．WFGDJ．200635420－24．15．J．200533120－23．16．D．200621－25．17．M．3．20076－21．121