脱蜡油组成与基础油性质之间的关系

摘要

通过对4种原油蜡油窄馏分的润滑油潜含量评价数据以及质谱表征数据分析，探究脱蜡油的族组成与润滑油基础油收率、黏度指数的关系。基础油中饱和烃（P＋N）组分黏度指数、收率、族组成都可以较好地用脱蜡油烃组成含量预测，同时能预测轻质和中质芳烃（A1、A2）的收率。本方法可以替代润滑油潜含量分析中繁琐的柱分离过程，提高优质润滑油型原油筛选的概率。%To explore the relationship between the hydrocarbon compositions of dewaxed oil and vis-cosity index and yield of base oil,the lube potential content and MS characterization of the narrow VGO fractions of four crude oils were analyzed. It is found that the yield and viscosity indexes of P+N com-ponents and related group hydrocarbon compositions as well as the yields of light and intermediate aro-matic hydrocarbons can well be predicted by analyzing the group compositions of the dewaxed oil. The findings can replace tedious column separation process of lube potential content analysis method to in-crease the probability of high-quality crude oil screening.