使用生物柴油燃料作为商业柴油混合燃料的可行性研究

N. Belozertseva, O. M. Torchakova, I. Bogdanov, M. Kirgina
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摘要

减少与碳氢化合物燃料燃烧相关的排放和增加生物燃料的消费是一项紧迫的经济和环境任务。生物柴油是石油柴油的替代品,作为一种商业燃料混合物被广泛使用。在这方面,重要的是研究从各种原料中获得的生物柴油作为商业柴油混合燃料的可行性,以及确定生物柴油燃料/石油柴油燃料的最佳比例。添加少量的生物柴油对燃料的环境特性也有积极的影响。本研究以向日葵、玉米和菜籽油为原料,以乙醇为酯化剂,氢氧化钠为催化剂,通过酯化反应合成生物柴油燃料。测定了合成的生物柴油燃料的组成和性能。制备了生物柴油掺入量分别为5%、10%、15%和20%的生物柴油/石油柴油共混物,并测定了其组成和性能。研究发现,生物柴油燃料的加入增加了所得燃料的密度、粘度和自燃性,同时降低了硫含量,使分馏组分更重。这种效果与混合物中生物柴油的浓度成正比。结果表明,添加生物柴油对降低混合燃料的极限过滤温度有一定的影响,以葵花籽油、玉米油和菜籽油为原料合成的生物柴油在不同浓度下可达到最大过滤温度。对于夏季商用柴油燃料的生产,我们推荐10vol的混合物。从所研究的任何植物油中提取的%生物柴油燃料和90vol。%石油柴油燃料。
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Feasibility study of using biodiesel fuels as a blendstock of commercial diesel fuels
Reducing emissions associated with the combustion of hydrocarbon fuels and increasing the consumption of biofuels represents an urgent economic and environmental task. Biodiesel is an alternative to petroleum diesel fuel and is widely used as a commercial fuel blendstock. In this regard, it is important to study the feasibility of using biodiesel obtained from various raw materials as a blendstock of commercial diesel fuels, as well as to identify optimal ratios of biodiesel fuel/petroleum diesel fuel. The addition of even small amounts of biodiesel has a positive effect on the environmental properties of the fuel. In the present study, we synthesize biodiesel fuel from sunflower, corn, and rapeseed oils by the reaction of interesterification using ethyl alcohol as an interesterifying agent and sodium hydroxide as a catalyst. The composition and properties of the synthesized biodiesel fuels were determined. Blends of biodiesel/petroleum diesel fuel with 5, 10, 15, 20 vol.% biodiesel blend content were prepared followed by determination of their composition and properties. It was found that the addition of biodiesel fuel increases the density, viscosity, and self-ignition of the resulting fuel, at the same time as decreasing the sulfur content and making the fractional composition heavier. This effect is directly proportional to the concentration of biodiesel in the blend. The effect of reducing the limiting filterability temperature of the blend fuel by the addition of biodiesel was revealed, with its maximum achieved at different concentrations of biodiesel synthesized from sunflower, corn, and rapeseed oils. For the production of a summer commercial diesel fuel, we recommend blends of 10vol.% biodiesel fuel, derived from any of the vegetable oils under study, and 90vol.% petroleum diesel fuel.
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