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:2008-10-03:(1959-),(),,,,:167325005(2009)0220144205,,,,(,266555):,,,:17Lm-2h-1,50%;310mPas60s;,,;,:;;;;:TQ02813:APreparationandseparationperformanceofpolyimidenanofiltrationmembraneforsolventrecoveryinnaphthenicacidremovingprocessfordieselSONGLi2hang,SHIDe2qing,KONGYing,YANGJin2rong,LIYang2chu(StateKeyLaboratoryofHeavyOilProcessinginChinaUniversityofPetroleum,Qingdao266555,China)Abstract:Theethanol2ammoniachemicalextractiontechnologyforremovingnaphthenicacidfromdieselhasadisadvantageofhighenergyconsumptioninthesolventrecoveryprocess.Tosolvethisproblem,polyimidenanofiltrationmembranewaspreparedtoseparatenaphthenicacidfromsolventintheextraction.Theinfluencesofmembranepreparationparameterssuchasapparentviscosityofthecastingsolution,thevolatilizationtimeandthecompositionofsolidificationliquidonpermeationfluxandrejectionofnaphthenatewereinvestigated.Theinfluencesofoperationconditionssuchasconcentrationofnaphthe2nateinextractionandoperationpressureonseparationperformancewerealsostudied.Thepermeationfluxofmembranecanreach17Lm-2h-1andtherejectionisover50%.Theresultsshowthatthemembranewithoptimalseparationperform2ancecanbeobtainedundertheconditionsofusingcastingsolutionwithviscosityof310mPas,volatilizationtimeof60sandethanolsolidificationliquid.Theascentofnaphthenateconcentrationdecreasesthepermeationflux,buthaslittleeffectontherejectionofnaphthenate.Thepermeationfluxandrejectionincreasealongwiththerisingofoperationpressure.Keywords:naphthenicacid;ethanol2ammoniaextraction;polyimidenanofiltrationmembrane;preparation;separationper2formance,[124],,,,,,2001000200933()Vol.33No.22JournalofChinaUniversityofPetroleumApr.2009©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(90%[5])200700[6],[728]/,(polyimide,PI),,1111,,:112,,5A113(1)PI,(DMF)24h,01048mm,24h(),,,,,PI(2)(54550),,5min,,,,105,,(3),,PI--,,1,12156cm21Fig.1Schematicdrawingofmembraneseparationperformancetestingset2up:,J=V/(tS),J,Lm-2h-1;V,L;t,h;S,m2:,R=(wF-wP)/wF.,R;wF;wP2211211116PI,DMF10%,150,270,310,360,410650mPas6PI,(3MPa,20,9%),11,,,,360mPas,,310mPas,541332,:©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(mPas)J/(Lm-2h-1)R/%15032.236.1270,21.945.131017.451.236015.652.6410,13.145.8650,11.732.621112,,PI,22,,60s,60s,,,,,,,,,,,,,,,2Fig.2Variationcurveofmembraneseparationperformancewithvolatilizingtime(3)3,,40s,;60s,,;100s,,,,,60s3Fig.3SEMphotographsofnanofiltrationmembranecross2sectionatdifferentvolatilizingtime21113,,,,0,20%,50%,80%100%60s,5,44,,,641()20094©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(10%)520,3MPa5Fig.5Influenceofmasspercentofnaphthenateonmembraneseparationperformance5,,,,,,,,;,,,,,,212.2,209%,66,115215MPa,215MPa,,215MPa,,,,,,,,,,,6Fig.6Influenceofoperationpressureonmembraneseparationperformance3(1)310mPas;60s;(2),741332,:©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:[1],,,.[J].:,2003,19(4):87293.TANGXiao2dong,ZHOUJian2jun,GAOChun2lin,etal.Optimizationofalcohol2ammoniachemicalextractionforrefiningstraight2rundiesel[J].ActaPetroleiSinica(PetroleumProcessingSection),2003,19(4):87293.[2],.[J].,2005,34(3):1492153.HEJin2jiao,DOUHong2shan.Studyontechniqueofrefi2ningstraight2rundistillatedieseloilbyammonia2alcoholmethod[J].ContemporaryChemicalIndustry,2005,34(3):1492153.[3],,,.2[J].,2006,36(1):36238.WANGYan2zhen,CHUZhao2sheng,QIUBo,etal.Separationnaphthenicacidfromhigh2aciditycrudebyre2action2extraction[J].PetroleumRefineryEngineering,2006,36(1):36238.[4],,.2[J].,2002,30(6):5002504.TANGXiao2dong,ZHOUJian2jun,WANGHao.Etha2nol2ammoniachemicalextractionforrefiningstraight2rundiesel[J].JournalofFuelChemistryandTechnology,2002,30(6):5002504.[5].()[M].:,1988:1412146.[6],,.[J].,2004,14(11):2082210.SULian2juan,TANGXiao2dong,ZHOUJian2jun.Thenaphthenicacidinpetroleumanditsseparationandpuri2ficationprocesses[J].Sci/TechInformationDevelopmentandEconomy,2004,14(11):2082210.[7]LIVINGSTONAG.Aprocessfordeacidfyingcrudeoil:EU,WO/2002/050212[P].200226227.[8],,,.[J].,2005,15(5):13216.HUANGGuang2dou,ZHANGZhi,LIGuang,etal.Studyonprocessofnaphthenicacidpurificationbymem2braneseparation[J].ChemicalEngineeringDesign,2005,15(5):13216.()(143)[10]LINLi2gang,WANGGang,QUHui2min.Pervaporationperformanceofcrosslinkedpolyethyleneglycolmem2branesfordeepdesulfurizationofFCCgasoline[J].JournalofMembraneScience,2006,280(1/2):6512658.[11],,,.FCCHEC[J].:,2008,24(2):2322236.QUHui2min,KONGYing,ZHANGYu2zhong,etal.PropertyevaluationofcrosslinkedHECpervaporationmembraneforFCCgasolinedesulfurization[J].ActaPetroleiSinica(PetroleumProcessingSection),2008,24(2):2322236.[12]RAYS,RAYSK.Separationoforganicmixturesbypervaporationusingcrosslinkedrubbermembranes[J].JournalofMembraneSci,2006,270:1322145