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卡宾达—维提亚兹减三线基础油的研究

2015-08-08宁苏明

润滑油 2015年3期

宁苏明

摘要:文章以卡宾达-维提亚兹和卡伦-涠洲减三线脱蜡油为原料,进行了溶剂精制和白土精制试验, 试验结果表明:卡宾达-维提亚兹基础油黏度指数勉强达到MVI要求,该油种不适宜进“老三套”生产润滑油基础油。通过对卡宾达-维提亚兹、卡伦-涠洲减三线基础油以及加氢基础油组成的比对分析,较好地解释了基础油黏度指数的大小,是由其饱和烃中链烷烃和一环环烷烃含量的高低决定的。在当今原油劣质化趋势更加显著,适应传统工艺生产润滑油基础油资源越来越少的时期,该研究为“老三套”原油品种的优化、保证润滑油基础油质量和企业经济效益提供了技术支撑。

关键词:卡宾达-维提亚兹原油;卡伦-涠洲原油;基础油;黏度指数;链烷烃;环烷烃

中图分类号:TE624.5文献标识码:A

Abstract:Based on the solvent & clay treatments of the dewaxed oil from Cabinda-Vityaz & Karen-Weizhou vacuum distillate No.3 fractions, it is shown that Cabinda-Vityaz crude oil is unsuitable for conventional lube base oil production, of which the VI specification has been barely met with MVI standard. Compared with the composition analysis of hydro-treated base oil and two conventional base oils separately from Cabinda-Vityaz & Karen-Weizhou vacuum distillate No.3 fractions, it is concluded that the VI is positively correlated with its paraffin & monocycloparaffin contents. In an era lack of conventional base oil production resources, this study supplies the technical support for the optimization of conventional lube base oil production which ensures the base oil quality and company's profit.

Key words:Cabinda-Vityaz crude oil; Karen-Weizhou crude oil; lube base oil; viscosity index; paraffin; cycloparaffin

0引言

一直以来,国内大部分炼油企业的润滑油基础油生产沿用传统的溶剂精制、溶剂脱蜡和白土补充精制工艺(简称“老三套” ),是以低硫石蜡基原油为原料生产Ⅰ类油。进入21世纪,随着世界各地原油开采程度的不断加深,原油劣质化趋势更加显著,适应传统工艺生产润滑油基础油的资源也越来越少,因此,做好“老三套”原油品种的优化工作对保证润滑油基础油质量和企业经济效益都是非常重要的。

1原料和试验

试验原料是3#酮苯装置加工的卡宾达-维提亚兹(4∶1)减三线脱蜡油和比对样卡伦-涠洲(7∶3)减三线脱蜡油。两个脱蜡油按相同条件进行糠醛精制(4个理论级)和白土精制(模拟大生产条件)试验。……

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