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首页> 外文学位 >Development of a biofuel blend using soybean methyl ester as the amphiphile in an ethanol-biodiesel-diesel microemulsion: EB-diesel.
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Development of a biofuel blend using soybean methyl ester as the amphiphile in an ethanol-biodiesel-diesel microemulsion: EB-diesel.

机译：在乙醇-生物柴油-柴油微乳液：EB-柴油中使用大豆甲酯作为两亲物开发生物燃料混合物。

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The oxygenation capability of ethanol-diesel fuel blends referred to as e-diesel significantly reduces particulate matter and reduces toxic gases like CO and NOx during combustion. However, a major drawback with e-diesel is that ethanol is immiscible in diesel over a wide range of temperatures. In this study, the use of soybean based biodiesel (soybean methyl esters) as an amphiphile to form a stable ethanol-biodiesel-diesel microemulsion was investigated. Ternary phase diagrams were developed to represent the phase behavior of the ethanol-biodiesel-diesel pseudo three-component system. Effects of different components and physical properties of selected blends also were studied. The instantaneous phase behavior indicated that stable microemulsions are formed over a wide area in the phase triangle, revealing that biodiesel could be successfully used as an amphiphile in an ethanol-biodiesel-diesel (EB-diesel) fuel blend. In order to formulate a stable microemulsion, the ratio of biodiesel to ethanol in the system should be greater than one. Studies revealed that the blend concentration that had the highest stability to low temperatures and moisture was ethanol: biodiesel: diesel = 3.75%:25%:71.25% and 4.00%:20%:76.00% with low sulfur (0.05%) diesel reference fuel and ultra low sulfur (1.2 ppm) diesel fuel as the diesel component in the blends respectively. Analyses of fuel properties of the selected blends suggested that for both diesel fuel types, the blend energy contents were not significantly different when compared to their pure diesel forms. When #2 low sulfur diesel was used in the ethanol-biodiesel-diesel blend, the lubricity of this EB-diesel was 2.3 times better with a sulfur content reduction of 34% when compared to #2 low sulfur reference diesel fuel. When #2 ultra low sulfur diesel fuel was used in the blend, the lubricity was over four times better than reference ultra low sulfur diesel fuel. However, the blend sulfur content increased from 1.2 ppm to 18 ppm. The cetane numbers and flash points of the EB-diesel blends with both diesel types were reduced slightly in comparison to their pure forms.
机译：乙醇-柴油燃料混合物的充氧能力被称为e-柴油，可显着减少燃烧过程中的颗粒物并减少有毒气体，如CO和NO 。但是，电子柴油的主要缺点是乙醇在很宽的温度范围内不能与柴油混溶。在这项研究中，研究了使用大豆基生物柴油（大豆甲酯）作为两亲物以形成稳定的乙醇-生物柴油-柴油微乳液。建立了三元相图，以表示乙醇-生物柴油-柴油假三组分系统的相行为。还研究了所选混合物的不同组分和物理性能的影响。瞬时相行为表明，稳定的微乳状液形成在相三角形的宽区域内，表明生物柴油可以成功地用作乙醇-生物柴油-柴油（EB-柴油）燃料混合物中的两亲物。为了配制稳定的微乳液，系统中生物柴油与乙醇的比例应大于1。研究表明，对低温和湿气具有最高稳定性的混合气浓度为乙醇：生物柴油：柴油= 3.75％：25％：71.25％和4.00％：20％：76.00％，低硫（0.05％）柴油参考燃料混合燃料中分别添加了超低硫（1.2 ppm）柴油和柴油成分。所选混合燃料的燃料性质分析表明，对于两种柴油类型，混合燃料的能量含量与纯柴油形式相比均无显着差异。当在乙醇-生物柴油-柴油混合物中使用＃2低硫柴油时，与＃2低硫参考柴油相比，该EB柴油的润滑性好2.3倍，硫含量降低了34％。当在混合物中使用＃2超低硫柴油时，润滑性是参考超低硫柴油的四倍以上。但是，共混物的硫含量从1.2 ppm增加到18 ppm。与纯柴油相比，两种柴油类型的EB-柴油混合物的十六烷值和闪点均略有降低。

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