Regeneration process for waste lubrication oil

Abstract

The invention discloses a regeneration process for waste lubricating oil, which belongs to the waste oil regeneration and recovery field. The waste lubricating oil is settled and precipitated, and is firstly subject to the reduced pressure topping distillation at a temperature of 260 DEG C and a vacuum degree of 20mmHg; then the topped waste lubricating oil is increased to between 380 and 400 DEG C, enters an evaporation tower for secondary reduced pressure distillation under the condition of a vacuum degree between 1 and 5mmHg, and enters a continuous catalytic distillation device, and a distillate is cooled to generate lubricant regenerated base oil with the yield more than 80 percent. Compared with the prior art, the process avoids using backward processes with heavier pollution such as acid cleaning, alkali neutralization and so on, and has high yield and better application prospect.

Description

Waste lubricating oil regeneration process technical field The invention belongs to the field of petrochemical industry and relates to the recycling and reuse of waste lubricating oil, in particular to a process for regenerating lubricating oil base oil from waste lubricating oil. Background technique Petroleum products often produce some waste lubricating oil during use, and these waste oils are often dumped as useless waste or burned as fuel, which not only causes a great waste of energy, but also causes serious pollution to the environment. Therefore, it is of great practical significance to explore and improve the waste lubricating oil regeneration process. The waste lubricating oil regeneration process not only turns waste into treasure, saves energy, is conducive to the full utilization of petroleum resources, but also helps reduce environmental pollution and maintain ecological balance. At present, the main regeneration processes in foreign countries include Meinke...

AI Technical Summary

Problems solved by technology

In order to overcome the problems of the existing waste lubricating oil regenerated base oil with complex process or low yield, and the three wastes treatment caused by pickling or white clay refining, the purpose of the present invention is to provide a waste oil with simple process, high yield, energy saving and environmental protection. Lubricating oil regenerated lubricating oil base oil process