渗透汽化-2-klg甲酯化反应膜集成工艺的.研究

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1、浙江工商大学硕士毕业论文(PVA)，集成工艺IV浙江工商大学硕士毕业论文STUDYoNTHEINTEGRATIoNPRoCESSoFPERVAPoRATIoNANDMETHYLESTERIFICATIoNREACTIoNoF2一KLGABSTRACTPervaporationisoneofthenewmembraneseparationtechnologiesdevelopedfromeightiesofthe20mcentury．Thewholeprocessisapurephysicalonewith

2、outanyextraadditive．Itpossessesmanyadvantagessuchasenvironmentpollution—free，combinewithbiochemistryandchemistryreactioneasily，advancedtechnology,lowenergyandhighseparationproficiency．Soitissubstitutingtheconventionalseparationprocessofdistillationandrect

3、ificationinsomefields，forexample，finechemicalindustryasfoodandpharmacyandpetrochemicalindustrystepbystep．Thetraditionalesterificationof2-keto·-L-·gulonicacidwithmethanoltoproducemethyl2-keto—gulonateintheretortundercircumfluencewithvitriolasthecatalyst．Re

4、movingwaterisimportant，Astheby—productV浙江工商大学硕士毕业论文waterinhibitstheconversionoftheester．Inindustry，themethodtoremovewaterisheating．Thisprocessinvolveslotsofdisadvantagessuchaslongreactiontimehighinvestment，highenergy，lowrateofesterconversion，lowpurityands

5、eriousenvironmentalpollutionetc．Theintegrationprocessofpervaporationandesterificationreactiondevelopestobeanewhotstopforstudy，recentlyyears．Themembraneintegrationprocesscanextractwaterselectivelyfromthereactionsystem。topromotetheactiontogoforward，heighten

6、therateofreactionandconversionofester．Theprocessandtheequipmentofthistechnologyaresimple．Itwouldbeeasytorealizetheindustrialproduction．Thisthesiscarriedoutaserialstudyonpervaperationassistedesterificationof2一keto—gulonicacid，includingtheseparationperforma

7、ncestudyontwotypescommercicalhydrophilicpervaporationmembranes，PERVAP@2201membraneandPERVAP@2510membranesupplied—bySULZERChemtechGmbhMembraneSystems，choosingtheoptimumpervaporationmembraneswhichisfitfortheesterificationsystemof2-keto·gulonicacidandmethan0

8、1．Examiningtheeffectofesterificationof2-keto—gulonicacidassistedbypervaporationprocess，studyingthefactorinfluencingesterificationandthepervaporationsuchas础04and以andetc．Theseparationperformanceofpervaporationmembrane