分子筛吸附法制无水乙醇的机理及工艺

11:2009-08-17:(1986),,,,:(,510641):,3A,:;;;:TQ031.5;TQ223.12+2:A:1008-021X(2009)11-0029-05TheMechanismandTechnicsoftheAbsolutealcoholMadebytheMolecularSieveAdsorptionMethodLIHao(DepartmentofChemicalEngineering,SouthChinaUniversityofTechnology,Guangzhou510641,China)Abstract:Expoundedthedehydrationmechanismintheprocessofabsoluteethylalcoholproductionbymolecularsieveadsorptionandthemechanismofmasstransfer.Gaveanintroductiontothemathematicalmodeloftheisothermaladsorptioncurvewhenthewaterbeadsorbedonthemolecularsieve.Madeapresentationaboutthetechnologcialconditionsoftheadsorption,desorptionprocess,andthewholeprocessflow.Itcouldbeprovidedasatheoreticalfoundationanddirectionsfortheactualdesignandproductionprocess.Keywords:molecularsieve;absoluteethylalcohol;mechanism;technics1:,;,,,,,,-,,-97.2%(),97.2%(),,,97.2%(),,,;,,,,,,-,,,,,,,,4940kJ/(kg):(1),,99.995%()(2),560kJ/L(3),,(4),,92:(5),572Mx/m[(AlO2SiO2)y]ZH2O,MAA,Al-Si,,,(0.30.8nm),,,,,,Si/Al,H2ONH3H2S,0.265nm,0.44nm,,3A,,,Bindal[1],3A-100,0.3nm,,Carmo[2],,,,,(Vapor-LiquidEquilibrium,VLE)Al-Rub[3]1-VLE,,,VLEFawzi[4]3A4A-,,,,,-3,,,:(1),(2),(3)(4),,,,:Knudsen3A,10-1010-8cm2/s,,,ArrehnuisTeo[5],,,WeberChakravorti[6],,4,,,[7]FreundlichLangmuirLangmuir-Freundlich,,Freundlich,LangmuirFreundlich,Langmuir-Freundlich,R20.99,,3ALangmuir-Freundlich:03SHANDONGCHEMICALINDUSTRY20093811q=qmbp1n1+bp,q,qm,,bLangmuir,b=b0exp(-H0/RT),H0Langmuir-Freundlich11Langmuir-Freundlich/KbqmnR2373.54.808.281.110.9925393.152.917.281.090.9908423.151.506.501.080.9956463.150.715.021.070.9961523.150.283.961.060.998755.1,-Carton[8]-,,,,,5.2,,;,,,[9],,,0.050.20m/s[10]5.3,4s,,,:(1),;(2),,,(H/D)46,,,,,5.4,,,,,,,,,78180,,5.5,,,,00.6MPa,,,,,,5.6,75.4kJ/mol,,,,6,,,,,;6.1(),(),0.3MPa,200,,150180,35,,,,13:,,,6.2180230,,,,,,,,,,,,,,,,7,,,1,,,,2,95%(),,(PSR),,,,,,,,,,,,95%,8,,,,,,,,,,,,,23SHANDONGCHEMICALINDUSTRY20093811,[1]BindalRC,MisraBM.Separationofbinaryliquidsystembysorption-acomparisonwithpervaporation[J].SepSciTechnol,1986,21:1047.[2]CarmoMJ,GubulinJC.Ethanol-wateradsorptiononcommercial3Azeolites:kineticandthermodynamicdata[J].BrazilianJournalofChemicalEngineering,1997,14:217.[3]AbuAl-RubFA,DattaR.Theoreticalstudyofthevapor-liquide-quilibriuminsidecapillaryporousplates[J].FluidPhaseEquilibria,1999,162(1):83.[4]BanatFA,AbuAl-RubFA,SimandlJ.Analysisofvapor-liquidequilibriumofethanol-watersystemviaheadspacegaschromatography:effectofmolecularsieves[J].SeparationandPurificationTechnology,2002,18:111.[5]TeoWK,RuthvenDM.Adsorptionofwaterfromaqueousethanolusing3Amollecularsieves[J].IndEngChemProcessDesDev,1986,25(1):17.[6]WeberTW,ChakravortiRK.Poreandsoliddiffusionmodelsforfixed-bedadsorbers[J].AIChEJ,1974,20(2):228.[7],,.3A[J].,2004,33(10):932-935.[8]CartonA,GonzalezG,CabezasJL,etal.Seperationofethanol-watermixturesusing3Amolecularsieve[J].ChemTechBiotechnol,1987,39(2):125.[9].[M].:,1988.[10]TurkogluH,FaroukB.Effectofgasinjectionvelocityonmixingandheattransferinmoltensteelbaths[J].NumericalHeatTransfer:PartA,1992,21:377-399.(:.[J].,2009,38(11):29-33.)(28)[15].[J].,2002,33(5):47-49.[16],,.[J].,2007,25(3):149-151.[17],.[J].,2003,17(3):48-50.[18],,.[J].,2004,23(10):19-22.[19],,.[J].,2000,18(3):7-8.[20],,.[J].,2006,29(4):27-30.[21],,,.[J].,2006,31(4):53-56.[22],.[J].,2004,23(8):837-840.[23],,,.[J].,2006,23(8):743-747.[24],.[J].,1994,11(3):14-29.[25],,.[J].,2007,34(11):88-91.[26].ASPENPLUS[J].,2003,20(4):56-59.[27],.ASPENPLUS[J].,2008,36(7):11-13.[28],,,.PROII[J].,2006,29(9):27-28.[29],.[M].:,1994.(:,,.[J].,2009,38(11):26-28.)20101958,,()(),2006,,,,:,ISSN1004-7050,CN14-1109/TQ,15.00,90.0022-172:35:030001/:[phone]E-mail:[e-mail]33: