Fractionation column for reclaiming used lubricating oil
US4406743A · kind A · utility
7Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1982 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | Sep 24, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M175/0016
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A novel process for the purification of used oil comprising removing the ash-forming components, then subjecting the oil to vacuum fractionation. A novel vacuum fractionation column is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.