生物柴油混合燃料低温流动性的改进研究

1、Company LogoImprovementResearchofBiodiesel-DieselMixedFuel'sLow-temperatureFluidity生物柴油混合燃料低温流动性的改进研究Huang Yuan-weiContents1. ReviewofPresentResearch2. PurposeofMyExperimentResearch3. Freezing-pointofBiodiesel-DieselBlendedwithDifferentProportionofEthanol4. ViscosityofBiodiesel-DieselBlendedwith

2、DifferentProportionofEthanol5. DrawaConclusion1.ReviewofPresentResearchBiodieselmadefromplantisrenewableenergy,butpeopleinCliinadon'twidelyusepurebiodieselascommonfuelburnedintheenginebecauseofitslessproductionatpresent.Ifweblendsomebiodieselintothefossildieselandusethiskindofmixedfuelascommonfu

3、elburnedintheengine,itcanrelievethetensesituationindieselsupplytosomeextent.CompanyLogo1.ReviewofPresentResearchComparedwithdiesel0#,thefreezing-pointandviscosityofthebiodieselarerelativelyhigher,sothebiodieselhasworselow-temperaturefluiditywhichinfluencestheatomizationandcombustionperformanceinthee

4、ngine.Variouslow-temperaturefluidityimprovershavebeenselectedtoblendintothebiodieseltoimproveitslow-temperaturefluidity.Resultshowsthatethanolhasbetterlow-temperaturefluidityandcanimprovelow-temperaturefluidityobviouslyinthemixedfuel.Thelow-temperaturefluidityimprovementresearchbeforetookthebiodiese

5、l(>70%)astheprincipalcomponentinthemixtureandtooktheethanolassecondarycomponentusedasfluidityimprover.ButbecauseofthelessproductionofthebiodieselinChina,weusuallyblendsomebiodiesel(20%)intothefossildieselandprobablyusethiskindofmixedfuelascommonfuelinthenearfuturewhichcanrelievethetensesituationi

6、ndieselsupply.WecallthiskindofmixedfuelBiodiesel-Diesel.principalcomponentandtakesthebiodiesel(20%)assecondarycomponentBothfreezing-pointandviscosityofthebiodieselarerelativelyhigherthandiesel0#,sodiesel0#mixedwithsomebiodiesel(20%)hasworselow-temperaturefluidity.Weknowthatethanolhasbetterlow-temper

7、aturefluidity.WhynotblendsomeethanolintotheBiodiesel-Dieseltoimproveitsfluidity?Andwhatethanolproportionshouldbeblendedintotomakeitslow-temperaturefluiditythesameasdiesel0#?Company Logo3. Freezing-point of Mixed FuelCompany Logo3. Freezing-point of Mixed FuelTable3-1Propertiesoftwokindsofpurebiodies

8、el物理性质H密度<20X；）kgm?凝面点884一877运动粘度<20vC）6.88.8低热值38.438.3Table3-2Propertiesofdiesel0#andethanol|物理性质DE密度（2CTC）kgm?凝固点/r850-3790-U4运动粘度(20)nmi-s5.751.55低热值MJ,kg42.526.8Company LogoS1015乙醇潮）比例0 1 2 3 4 £-Jk耶遮Figure3-1Thefreezingpointofbiodiesel-dieselblendedwithdifferentproportionalethanolis

9、depressed.(horizontalcoordinate:ethanolproportion/vertical:freezingpoint)4. Viscosity of Mixed FuelFigure 4-1 The viscosity of M20 biodiesel-diesel blended with different proportional ethanol is reduced.Company Logo4. Viscosity of Mixed Fuel123o96510乙醉添加匕例%<1%乘15Company LogoFigure4-2TheviscosityofH20biodiesel-dieselblendedwithdifferentproportionalethanolisreduced.5.DrawaConclusionEthanolhasbetterlow-temperaturefluidity.Whenweblend5%ethanolintobiodieseldiesel,boththefreezing-pointandviscosityofM20andH20canbeimprovedtot