基于碳数分布和族组成分析的脱沥青油加氢异构反应产物分析及优化利用  

Evaluation and utilization optimization of a deasphalted oil hydroisomerization products based on carbon number distribution and hydrocarbon type analysis

作　　者：王强[1] 沈本贤[1] 凌昊[1] 李坤[2] 贺产鸿[2] 

机构地区：[1]华东理工大学化工学院,上海200237 [2]中国石化茂名石化分公司,广东茂名525011

出　　处：《燃料化学学报》2006年第5期583-590,共8页Journal of Fuel Chemistry and Technology

基　　金：2001年中国石油化工股份有限公司"十条龙"攻关项目

摘　　要：在连续固定床小试装置中氢压9.0 MPa、380℃和体积空速0.8 h-1考察了脱沥青油(DAO)的加氢异构性能,采用高温GC-MS方法对DAO加氢异构实沸点蒸馏产物的碳数分布和族组成分布进行了表征。结果表明,轻组分随切割温度的上升黏度和收率增加,单环环烷烃含量急剧下降。重组分随切割温度的上升产品的碳数分布变宽变平,异构直链烷烃质量分数基本保持不变,单环环烷烃质量分数的变化对产品的黏度指数(VI)值和倾点产生显著影响。380℃以上重组分产物的VI和低温性质可满足生产不同牌号的API II类高档润滑油基础油标准。A deasphalted oil （DAO） was hydroisomerized in a flow type fixed-bed reactor over a commercial catalyst at 9.0 MPa, 380 ℃ and LHSV 0.8h^-1. The products were distilled and separated by true boiling point distillation method. Carbon number distribution and hydrocarbon type of various cuts were determined by normal or high temperature GC-MS. It was found that the viscosity and the yield increased with the increase of boiling point for the light cuts, while the contents of monocycloalkanes decreased sharply. As for the heavy cuts, their carbon number distributions became wide with the increase of boiling points. Variation of monocycloalkanes in heavy cuts had significant impact on the viscosity index （VI） and pour point of the base oil. VIs and low temperature properties of ＋380℃ heavy cuts could meet the specifications of API Ⅱ higher grade lube base oil.

关 键 词：脱沥青油 加氢异构 族组成分布 碳数分布 

分 类 号：O643[理学—物理化学]