Process for reclaiming used lubricating oil
US4490245A · kind A · utility
4Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1984 |
| Grant date | Dec 25, 1984 |
| Priority date | — |
| Expiry date | Apr 9, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M175/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A used lubricating oil is reclaimed by vacuum distillation. The bottoms is vacuum pyrolyzed with limestone to form a virtually insoluble coked mass containing insoluble metal carbonates and free metal. This solid coked residuum is suitable for landfilling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.