酸化油固定床酶法合成生物柴油研究

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1、第36卷第2期燃料化学学报Vol.36No.22008年4月JournalofFuelChemistryandTechnologyApr.2008文章编号:025322409(2008)022236205酸化油固定床酶法合成生物柴油研究12314陈英明,常杰,付严,陆继东,肖波(1.华中科技大学能源与动力工程学院,湖北武汉430074;2.华南理工大学传热强化与过程节能教育部重点实验室,广东广州510641;3.中国科学院广州能源研究所,广东广州510640;4.华中科技大学环境科学与工程学院,湖北武汉430

2、074)关键词:固定化脂肪酶;酸化油;生物柴油;固定床中图分类号:Q55文献标识码:ABiodieselproductionfromacidoilinfixedbedreactorwithimmobilizedlipase12314CHENYing2ming,CHANGJie,FUYan,LUJi2dong,XIAOBo(1.InstituteofEnergy&Power,HuazhongUniversityofScienceandTechnology,Wuhan430074,China;2.Schoolof

3、ChemicalandEnergyEngineering,SouthChinaUniversityofTechnology,Guangzhou510641,China;3.GuangzhouInstituteofEnergyConversion,ChineseAcademyofScience,Guangzhou510640,China;4.SchoolofEnvironmentalScienceandEngineering,HuazhongUniversityofScienceandTechnology,Wu

4、han430074,China)Abstract:TheconvertionofacidoiltobiodieselbyuseofimmobilizedCandidalipaseabsorbedontextileclothwasstudiedinafixedbedreactor,whichcannotonlyreducetheenvironmentalpollutionofacidoil,butalsoproduceasubstituteforpetroleumdiesel.Theacidoilmixedwi

5、thmethanolwaspumpedintothreefixedbedreactorsinseries,andthemethanolwasaddedwiththemolarflowratesameastheacidoilineachreactor.Theeffectsofenzymecontent,solventcontent,watercontent,flowrateofreactantandtemperatureontheenzymaticreactionwereanalyzed.Theresultof

6、orthogonalexperimentsindicatesthattheoptimaltransesterificationcanbeperformedunderthefollowingconditions:immobilizedlipasecontentinacidoil,20%;hexanecontentinacidoil,10%;watercontentinacidoil,10%,reactiontemperature,50℃;andflowrateofreactant,0.08g/min.Under

7、theseconditions,theFAMEcontentof90.18%intheproductisobtained.Theimmobilizedlipasecanbereusedwithrelativelystableactivityafterglycerolbeingremovedfromthesurface.Byrefining,mostofthechemicalandphysicalpropertiesofbiodieselwillmeettheAmericanandGermanybiodiese

8、lstandardsandexceed#theChinesestandardof0petroleumdieselexceptforcarbonresidue,densityandkinematicviscosity.Keywords:immobilizedlipase;acidoil;biodiesel;fixedbedreactor酸化油是油脂工业中以皂脚、油脚经酸化处理速度相对较慢,设备要求高。