Purification of Used Lubricating Oils Using Vacuum Distillation

Journal of Petroleum Research and Studies Pub Date : 2024-03-20 DOI:10.52716/jprs.v14i1.766

Mustafa R. Al-Nidawi, Dalya J. Ahmed, Mohammed Chali, Ahmed Bahjat

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Abstract

Engine oil (EO) is produced by mixing base oil derivatives from crude oil with chemical additives to the lubricity of moving parts and reduce the friction inside the engine. Used lubricating oil (ULO) is one of the hazardous materials that consists of pollution harmful to the environment, it needs to be managed properly. In this work, vacuum distillation technique is used to recycle used lubricating oil. Used lubricating oil samples from two different brands of diesel engine oil (20w-50) and gasoline engine oil (10W-30) are used in this study. Various properties of ULO and recycled oil were characterized such as kinematic viscosity, viscosity index, density, pour point, flash point, Sulphur content, and Fourier transform Infrared spectroscopy FTIR. The yield recycles for ULO of gasoline engines, diesel engines, and mix (gasoline and diesel) by vacuum process were 85%, 74%, and 75% respectively, it was discovered that the sulfur component decreased from 9792.3 ppm of ULO to 405 ppm of yield distillates. The pour point results show an increase from -30 °C of used lubricating oil to -18 and -6 for distillates cut for vacuum distillation, compared to the pour point of Iraqi base oil 40 and 60 Stook (SN150 and SN200) -18 °C and -6 °C

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利用真空蒸馏提纯废润滑油

发动机油（EO）是将原油中的基础油衍生物与化学添加剂混合后生产出来的，用于提高运动部件的润滑性并减少发动机内部的摩擦。废润滑油（ULO）是对环境有害的危险材料之一，需要妥善管理。在这项工作中，使用了真空蒸馏技术来回收废润滑油。本研究使用了柴油发动机油（20W-50）和汽油发动机油（10W-30）两种不同品牌的废润滑油样本。对 ULO 和回收油的各种特性进行了表征，如运动粘度、粘度指数、密度、倾点、闪点、硫含量和傅立叶变换红外光谱。通过真空工艺，汽油发动机、柴油发动机和混合燃料（汽油和柴油）的 ULO 回收率分别为 85%、74% 和 75%。倾点结果显示，与伊拉克基础油 40 Stook 和 60 Stook（SN150 和 SN200）的倾点-18 °C 和-6 °C相比，真空蒸馏馏分油的倾点从废润滑油的-30 °C升高到-18 °C和-6 °C。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Petroleum Research and Studies

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