Abstract: Regeneration processes of used gasoline engine oil were investigated. The results show that the methods of electric desalting and clay adsorption for waste oil decalcification are not suitable. While the base oil on specification can be obtained by distillation-hydrotreating process. The regenerated oil meets the lubricating base oil standard of VHVI 5 with a yield (>360 ℃ fraction) of 77.09%. When the addition of the distillation residue is 3% in 90# asphalt product, the load asphalt in compliant with 90# JIG F40-2004 standard can be produced. Increasing the dope of residue to 5%, 110 load asphalt, meeting 110# JTG F40-2004 standard, can also obtained. It is concluded that the distillation-hydrotreating process is suitable for regeneration of waste lube oil with high recovery of base oil and utilization of distillation residue.

Key words: waste engine oil, regeneration technology, distillation, hydrotreating