润滑油基础油结构族组成的预测.pdf

石油化工
2014年第43卷第2期
PETROCHEMICAL TECHNOLOGY
润滑油基础油结构族组成的预测
王秀文,陈文艺,邹恺
辽宁石油化工大学石油化工学院,辽宁抚顺113001
[摘要]测定了1种来自不同地区的润滑油基础油的部分物性(如碳氢原子比、密度、黏度、折光率、平均相对分子质量
等),并对润滑油基础油的结构族组成用不同方法进行了分析。提出采用润滑油基础油的基本物性,通过模型的构建、模型
表征因子及预测模型的确立来确定芳香磯率(CA)、环烷碳率(C)和烷基碳率(Cp)的预测模型方程式。用预测模型方程式计
算了润滑油基础油的结构族组成,并与n-d-M法和改进B-L法的计算结果进行比较。分析实验数据发现,预测模型的结果优
于n-d-M法的结果,与政进B-L法的结果接近,CA,C、.Cp的最大偏差分别为3.96%,4.21%,3.79%。预测模型具有一定的
应用价值。
[关键词]润滑沺基础油;结构族组成;表征因子
[文章编号]1000-8144(2014)02-0221-05
中图分类号」TE626.6
[文献标志码]A
Prediction of the Structural Group Compositions of Lube Base Oil
ng Xiuwen, Chen Wenyi, Zou Kai
Department of Petroleum and Chemical Technology, Liaoning Shihua University, Fushun Liaoning 113001, China)
I Abstract The physical properties of 11 lube base oils, namely the atomic ratio of carbon
to hydrogen, density, viscosity, refractive index and average relative molecular mass, were
determined and their structural group compositions were studied by different analysis methods
Models for predicting the aromatic carbon rates(C), naphthenic carbon rates(N)and alkyl carbon
rates(Cp )were established using the physical properties and calculated model characterization factors
The structural group compositions of the lube base oils were calculated by the models with C, Cx
and Cp, and the results were compared with those obtained by the n-d-m method and improved B-L
method. The analysis of the experimental data showed that the results obtained by the predicting models
were superior to those obtained by the n-d-m method, and were similar to those obtained by the
improved B-L method. The maximum deviations of CA, Cw and Cp were 3.96%, 4.21%o and 3.79%
:ctive
I Keywords J lube base oil; structural group composition; characterization factor
随着加氢工艺的发展,润滑油市场对高质量上,因此润滑油的好坏主要由基础油决定。目
的润滑油需求日益增加,对基础油质量要求也越来前,确定润滑油基础油结构族组成的方法主要为H
越严格。国内外很多基础油生产厂家的实践证明,NMR法,但该方法费用较高,这使得部分小、中
在石蜡基原油匮乏而以非石蜡基为原料时,传统型生产厂家及时了解润滑油基础油结构族组成较为
的“老三套”工艺几乎不能经济的生产出APⅡ和困难。若能通过简单的物理性质(如密度、黏度、
APⅢ类基础油。由于原油产地不同,生产工艺条碳氢原子比(CH)、折光率、平均相对分子质量
件的差别,润滑油基础油的组成千差万别。基础油等)来确定润滑油基础油的结构族组成,这将对部
的组成决定了润滑油的使用性质。温度、压力等外
收稿日期]2013-07-26;[修改稿日期]2013-10-27。
界条件差别制约着人们选用不同性质的润滑油っ?「作者简介」王秀文(198),女,辽宁省大连市人,预士生
选油的需要推动人们必须了解润滑油基础油的结
电话15841333526,电邮Xiuwen1988wang@163.com。联系人:陈
构族组成。而润滑油中基础油含量高达80%()以文艺电话13804937369,电邮swo163co0m