Method of rerefining oil with recovery of useful organic additives
Patent
·
OSTI ID:7322758
Used oil is rerefined by diluting it with a water-soluble polar diluent and removing insoluble impurities from the resulting solution, adding water to produce a two-phase system, separating the organic phase and removing the polar diluent therefrom. By this method, it is possible to recover oil which still contains viscosity modifying additives and the like. If desired, the rerefined oil can be subjected to further treatment such as hydrogenation.
- Assignee:
- The Lubrizol Corp.
- Patent Number(s):
- US 4028226
- OSTI ID:
- 7322758
- Country of Publication:
- United States
- Language:
- English
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