Abstract In this paper, phase behavior in temperature scanning of E1305/distillate fractions/water/n-butyl alcohol microemulsion system were investigated. And the effect of surfactant concentration and oil type on microemulsion solubilization ability was studied. In the research, the content of saturates, aromatics, resins and asphaltenes in distillate fractions of crude oil was analyzed. The change of phase inversion temperature (PIT), solubilized ability and temperature caused by different compositions of distillate fraction was investigated. According to the experimental results, the phase behavior of temperature scanning was Winsor Ⅰ → Winsor Ⅲ → Winsor Ⅱ. The ability of solubilizing microemulsion was improved by increasing the surfactant content. The temperature of optimum solubilization was decreased with the increase of surfactant content. When the type of oil phase was changed, the solubilized ability of microemulsion was decreased with the increase of distillation temperature. And the optimum solubilization temperature was increased. According to the results, this phenomenon was caused by the increase of wax content and equivalent alkane carbon number.

中文翻译：

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原油微乳液体系非离子表面活性剂-馏分相行为及增溶能力

摘要 本文研究了E1305/馏分/水/正丁醇微乳液体系在温度扫描中的相行为。并研究了表面活性剂浓度和油类对微乳液增溶能力的影响。研究中分析了原油馏分中饱和物、芳烃、树脂和沥青质的含量。研究了不同馏分组成对相转化温度(PIT)、增溶能力和温度的影响。根据实验结果，温度扫描的相行为为Winsor Ⅰ → Winsor Ⅲ → Winsor Ⅱ。通过增加表面活性剂的含量提高了对微乳液的增溶能力。最佳增溶温度随着表面活性剂含量的增加而降低。当油相类型改变时，微乳液的增溶能力随着蒸馏温度的升高而降低。并提高了最佳溶解温度。结果表明，这种现象是由蜡含量和当量烷烃碳数增加引起的。