阿法拉伐换热

©AlfaLavalSlide1TimZheng郑程灿©AlfaLavalSlide2AlfaLavalHeatExchangersforUltra-HygienicPharmaceuticalDuties阿法拉伐制药系统卫生型换热器GasketedPHE(double-wall)Shell-in-tubeHETube-in-tubeHESanitaryPlateHeatExchangersWorkingprincipleofaPHE板式换热器的工作原理©AlfaLavalSlide4PHE-maincomponents主要组成CarryingbarPressureplatePlatepackTighteningboltsFrameplate©AlfaLavalSlide5PHE-dismantlingClickonanimationtoplayagain©AlfaLavalSlide6PlateHeatExchanger3DTourInsideFlowPrinciple©AlfaLavalSlide7ColdinHotoutHotinColdoutPlatepack-examplesinglepassEndPlateIIEndPlateIChannelplatesOnly2platesthatdonottransferheat-theendplates©AlfaLavalSlide8Plate-distributionarea•Chocolatepattern–Distributesflowevenlyovertheplate–SamePfordistanceAandB–UsesaminimumofPfordistribution–GivesmorePforefficientheattransfer–Avoidsdeadspotsinthefarcorner–流体均匀分布整张板片–A程与B程有相同的压力降–分片区压力降最小–可利用更多压力降，强化传热–避免板片上的死区A©AlfaLavalSlide9ALFALAVALVSCompetitor多步骤压板导致空白流道，需要加厚板片。.没有滞留区垫片加强的流体分配区，优化了流体分配。一步成型板片没有空白板片区，使板片更能承压。滞留区增加了结垢和腐蚀的危险。需要增设加强区。流体分配区不合理.竞争对手阿法拉伐NextSlideToMenu©AlfaLavalSlide10Plate-corrugationandchannelsL:LowthetaH:Hightheta•Wehavetwoplatecorrugations(LandH)L+L=LchannelsL+H=MchannelsH+H=Hchannels•Theseformthreedifferentchannels(L,MandH)•WechoosebetweenL,MandHchannels•Tailor-makeitforthespecificduty©AlfaLavalSlide11Plate-corrugationandchannelsAdvantages•Efficientheattransfer•Highwallshearstress•Variablethermallength•StrongconstructionBenefits•Increasedheatrecovery•Lowfouling•Optimaldesign•InsensitivetovibrationLowturbulence&pressuredropL+L=LchannelsMediumturbulence&pressuredropL+H=MchannelsHighturbulence&pressuredropH+H=Hchannels©AlfaLavalSlide13NUMBEROFPLATESDEPENDSON:板片数取决于•Flowrates流量•Permittedpressuredrops允许的压力降•Temperatureprogram温差•Size&designofplates板型•Heatrecovery热回收•Material&thicknessofplates材质和板厚•Physicalproperties物料性质Theconstruction©AlfaLavalSlide14Plate-parallelvsdiagonalflowParallelflowadvantages•Oneplate&onegasket–Identicalplatesintheplatepack–Rotated180ºtoachievebothsides•Lesssparesrequired•Fullysupporteddiagonal–Higherdesignpressureorthinnerplatematerial•Nocrossingofnozzles180º©AlfaLavalSlide15Plate-materials•Standardmaterialsandthicknesses–AISI304(stainlesssteel)•Usually0.4or0.5mmthickness•Cheapestpossiblesolution–AISI316(stainlesssteel)•Always0.5and0.6mm•Somewiththickerplates(high-pressureapplications)–254SMO(high-alloystainlesssteel)•Usuallyin0.6mmtoallowstock-keeping–Titanium•Always0.5and0.6mm•Somewiththickerplates(high-pressureapplications)•SomePHEswith0.4mm(low-pressureapplications)–AlloyC-276(Nickelalloy)•Usuallyin0.6mmtoallowstock-keeping100%115%250%300%600%RelativePrice©AlfaLavalSlide16GasketsPurpose•Thepurposeofthegasketsistosealbetweenthechannelplatesandbetweenplatesandtheframeparts(connectingplate).•Aretheonlywearpart(theageingofrubber).©AlfaLavalSlide17Gasket-doublesealingsystemSpecialventingportsareanintegralpartofthegasketdesigntopreventcrosscontaminationIfthegasketfailsLeakageisdetectedontheoutside©AlfaLavalSlide18GasketsStandardNitrile:•NBRP=(performance)upto130°C,Foodgrade•NBRB=(base)inexpensive,lowertemperature,Foodgrade•NBRHTF=(hightemperature)FoodgradeEthylenePropylenerubber:•EPDMC=clip-on/non-glued.Hightemperature(nonfood)•EPDMF=Foodgrade(FDA),upto145°C(Notresistanttooilandfat)©AlfaLavalSlide19Gasket-profileandgrooveProfileOtherAlfaLavalGrooveHighersealingpressureRiskofleakage.FullsupporttogasketOpenings.Riskofgasketblow-out.Thedifferenceislifetimeandreliability©AlfaLavalSlide21Gasket-sealinglifetimeProduct•Gasketmaterial•Fastening–Glueorglue-free–Typeofglue•Gasketgeometry•Gasketgroove•AlignmentofplatepackDuty•Operatingtemperature•Operatingpressure•Media•Typeofoperationcontinuous/cyclic•Cleaningmethods&chemicals•OpeningfrequencyLifetime!©AlfaLavalSlide22Gasket-sealinglifetime•MaximumtemperatureinCASandproductmanual(PMP),forexample,–NBRupto130ºC–EPDMupto160ºCGivesabout1yearlifetimeWhennochemicalattacktakesplace•Ruleofthumb:–10ºClowerthanmaxtemperature2yearslifetime–10ºCabovethemaxtemperature6monthslifetime©AlfaLavalSlide23PHE=flexibleColdinHotoutHotinColdout©AlfaLavalSlide24AlfaLavalGemini•Welded(Industrial)=D•Gemini-Nonwelded(Hygienic)=G–Paintedframe(M-series)–Stainlesssteelframe(BaseLine)GeminiM3-GM6-MGM15-BG©AlfaLavalSlide25©AlfaLavalSlide25GeminiplatedesignLeakagedetectionPinholeFramepressure©AlfaLavalSlide26LeakageifgasketisdefectLeakageifholeoccursinoneplateGeminiplatedesignLeakagedetectionLeakagedetection©AlfaLavalSlide27UniquedistributionpatternprovidesevenflowovertheplateDoublegasketstopreventcontaminationHygienicPHEplatedesign卫生型板片设计©AlfaLavalSlide28AtamajorpharmaceuticalcompanyinAustralia