润滑油基础油蒸发损失的影响因素研究

STUDY ON THE INFLUENCING FACTORS OF EVAPORATION LOSS OF LUBE BASE OIL

以具有代表性的加氢裂化尾油为原料,通过NB SH T 0059和SH T 0695两种蒸发损失分析方法分别考察了原料与相应润滑油基础油(简称基础油)产品组成、原料馏程范围和加工工艺对基础油蒸发损失的影响。结果表明:基础油的结构组成是影响基础油蒸发损失的关键和内在因素,通过各种工艺手段提高基础油的链烷烃含量,不仅可以提高基础油黏度指数,还可以降低基础油的蒸发损失;基础油黏度和馏程是影响蒸发损失的外在因素,可以通过优化原料和分馏塔的操作降低基础油蒸发损失。针对不同影响因素提出了降低基础油蒸发损失的有效措施。

Using the representative hydrocracking tail oil as raw material,the effects of raw material composition and corresponding base oil composition,the range of the feedstock distillation range and the processing technology on the evaporation loss of the base oil were investigated by two evaporation loss analysis methods,NB SH T 0059 and SH T 0695.It is found that the structural and composition of base oil were the key and the internal factors affecting the evaporation loss,and the content of alkanes in base oil could be increased by various technological means.The viscosity and distillation range of the base oil were the external factors affecting the evaporation loss,which could be reduced by optimizing the feedstock and operating the fractionating column.The effective measures to reduce the evaporation loss of base oil were put forward.