溶剂萃取法再生废机油的研究

Study on the Regeneration of Waste Engine Oil by Solvent Extraction

用溶剂萃取-白土精制法对4种废机油进行了再生研究,萃取过程剂油质量比为3∶1,萃取温度为60℃,减压蒸馏回收溶剂。白土精制过程中白土质量为油质量的10%,精制温度为185℃。精制后4种废机油的密度、凝点、黏度、闪点、酸值等都有不同程度的改善。

The solvent extraction-clay refining method is used to regenerate four kinds of waste engine oil.The ratio of solvent to oil in the extraction process is 3∶1,with the extraction temperature of 60℃,and the solvent is recovered by vacuum distillation.The amount of clay used in the clay refining process is 10%of the oil mass,and the refining temperature is 185℃.The physical properties such as density,freezing point,viscosity,flash point,acid value,carbon residue,ash and moisture of the four kinds of waste engine oils have been improved to varying degrees.