Abstract: The ternary phase diagrams of diesel oil, water, cosurfactant and surfactant system were plotted. The effect of various parameters, such as HydrophileLipophile Balance( HLB) value, the mass ratio of cosurfactant to surfactant and other parameters, on the stability of emulsifying diesel oil, was studied by using the phase change of the ternary phase diagram. It was shown that the compound of different HLB value, weak base of additive, mass ratio of cosurfactant to surfactant had a great influence on the ternary phase diagram of emulsified diesel. The largest emulsion region of the ternary phase diagram was obtained when HLB value was 5.8 for the compound of Span 80 and Tween 60 and the mass ratio of cosurfactant to surfactant was 0.3 in alkaline environment. The experimental results show that the effect of emulsifying diesel oil was best during the minimum dosage of mixed emulsifier.

Key words: Diesel fuel, Compound emulsifier, Weak base additive, Ternary phase diagram, Alcohol

摘要： 绘制了柴油、 水、 助乳化剂与乳化剂的三元相图, 利用三元相图中相区面积的变化研究了 HL B值( 亲
水亲油平衡值) 、 助乳化剂与乳化剂的质量比等参数对乳化柴油稳定性的影响。结果表明, 复配乳化剂的 HL B值、
弱碱添加剂、 助乳化剂与乳化剂的质量比对乳化柴油有很大的影响。在碱性环境下, S p a n 8 0与 Tw e e n 6 0复配乳化
剂的 HL B值为5. 8、 助乳化剂与乳化剂的质量比为0. 3时, 其三元相图的乳液面积最大, 复配乳化剂的用量最少, 此
时乳化柴油效果最好。

关键词: 柴油 , 复配乳化剂 ,  弱碱添加剂 ,  , 三元相图 ,  醇