填料塔计算软件

Preparedby:ColumnTagNo.:C-4101(MAX)Checkedby:JobNo.:4506ADate:Client:JOLProject:SR-Plant-4,5InputDataPackingtype=PallmetalringsPackingsize=25mmGas/VapourPropertiesGas/Vapourflowrate,V=3843kg/h=1.0675kg/sGas/Vap.Density,V=3.9352kg/m3LiquidPropertiesLiquidflowrate,L=2317kg/h=0.6436kg/sLiquidDensity,L=769.87kg/m3Conversion:LiquidViscosity,µL=0.0002218Ns/m20.2218Cp=Ns/m2Packingfactor,Fp=160m-1CalculationLiq.-Vap.Flowfactor,FLV=(L/V)x(V/L)=0.0431Designforaninitialpressuredropof20mmH2O/mpackingFromK4v/sFLV,K4=0.76K4atflooding=4.50Trial%flooding=((K4/K4atflooding))x100=41.0961Gasmassflowrate,Vm=K4.V(L--V)13.1Fp(µL/L)0.1=2.2198kg/m2.sTrialcolumnc/sarea=V/Vm(TrialAs)=0.4809m2Trialcolumndia.,D=0.7825mD=(4/pi)xTrialAsCOLUMNDIAMETER/HYDRAULICCHECK0.00022180(1/2)Sheet1of6Roundoff'D'toneareststandardsizeTherefore,D=0.600mColumnC/Sarea,As=0.2827m2As=(pi/4)xD2%flooding=69.8977%flooding=Trial%floodingx(TrialAs/As)ConclusionGenerallypackedtowersaredesignedfor50%--85%flooding.Iffloodingistobereduced,(i)Selectlargerpackingsizeandrepeattheabovesteps.OR(ii)Increasethecolumndiameterandrepeattheabovesteps.Sheet2of6Norton'sCorrelation:lnHETP=n-0.187ln+0.213lnµApplicablewhen,liquidphasesurfacetension4dyne/cm&36dyne/cmliquidviscosity0.08cP&0.83cPConversion:InputData0.017N/m=dyne/cmLiquid-phaseSurfaceTension,=17dyne/cmLiquidViscosity=0.2218cPn=1.13080CalculationlnHETP=0.280216HETP=1.323415ft=0.403377mForseparations,lessthan15theoriticalstages,a20%designsafetyfactorcanbeapplied.Considering20%safetyfactor,HETP=0.484052mForseparations,requiring15to25theoriticalstages,a15%designsafetyfactorcanbeapplied.Considering15%safetyfactor,HETP=0.463883mHETPPREDICTIONNorton'sCorrelationApplicableNorton'sCorrelationApplicable17Sheet3of6ConstantforHETPCorrelationRef.::RandomPackingsandPackedTowers----StrigleTable6.2Ref.::ChemicalEngineering,Volume-6,COULSON&RICHARDSON'S