Process and plant for purifying spent oil
US5759385A · kind A · utility
38Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1995 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Oct 17, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M175/005
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a process and plant for purifying spent oil, comprising dehydration, preferably by atmospheric distillation, directly followed by vacuum distillation producing a residue and at least one distilled oil fraction. The vacuum residue directly undergoes solvent extraction and the clarified oil obtained and the distilled oil fraction(s) undergo finishing hydrotreatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.