摘要
以玉米油、向日葵油、橄榄油为原料制备的生物柴油掺入到加氢裂化柴油中,生物柴油掺入量为0.5%以上,可使加氢裂化柴油磨痕直径小于460μm。以生物柴油中几种典型成分油酸甲酯、亚油酸甲酯、油酸、丙三醇、甘油单油酸酯及其复配为添加物,考察了其对加氢裂化柴油润滑性的影响。结果表明,生物柴油的主要成分油酸甲酯、亚油酸甲酯对加氢裂化柴油的抗磨性能远不如生物柴油效果明显,微量的油酸、甘油单油酸酯等极性杂质对提高加氢裂化柴油的润滑性效果显著。生物柴油掺入加氢裂化柴油中,起关键作用的不是脂肪酸单酯类混合物,而是生物柴油中的极少量游离脂肪酸、丙三醇以及部分参加反应的单酰甘油、二酰甘油和未参加反应的残留物三酰甘油等极性杂质。
The components of biodiesel fuel as additive to improve the lubrication performance of ultra low sulfur hydrocracking diesel fuel were studied. The lubrieity of diesel fuel was determined using high-frequency reciprocating rig（HFRR）test and the wear scar diameter（WSD）of the fuel was measured. Test results showed when biodiesel fuels prepared from corn oil, sunflower oil and olive oil were used as additive at an added dosage of more than 0.5%, the WSD of the hydrocracking diesel fuel could be less than 460μm,which met the requirement of automobile diesel fuels standard. The effect of some typical components of biodiesel, such as methyl oleate, methyl linoleate, oleic acid, glycerol, monoolein and their mixture on the lubricity of diesel fuel was investigated. Results showed that compared with biodiesel itself, its major components, methyl oleate and methyl linoleate, could not effectively improved the lubricity of hydrocracking diesel fuel;yet oleic acid and monoolein,as the minor polar impurities of biodiesel, could improve the lubricity of hydrocracking diesel fuel significantly. Therefore, when biodiesel was added to hydrocracking diesel fuel, the lubricity improvement mainly came from the small amounts of polar impurities such as glycerol, free fatty acids, partially reacted acylglycerols（monoacylglycerols and diacylglycerols）,as well as residual starting material（triacylglycerols）; the improvement was not from the major components,monoalkyl esters.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2009年第4期39-42,共4页
Petroleum Processing and Petrochemicals
基金
中国石油化工股份有限公司资助
项目号:108107
关键词
生物柴油
高频往复机
加氢裂化
润滑性
磨痕直径
biodiesel
high-frequency reciprocating rig（HFRR）
hydrocracking
lubricity
wear scar diameter（WSD ）
