Process of hydrodesulfurization and separate solvent extraction of distillate and deasphalted residual lubricating oil fractions
US4085036A · kind A · utility
7Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1976 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Oct 1, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the production of lubricating oils from petroleum stocks containing significant quantities of sulfur and lubricating oil components boiling above about 650.degree. F. (343.degree. C.) by subjecting such stocks to a series of steps comprising hydrodesulfurization, fractionation, and solvent extraction. The residual fraction obtained from the fractionation step may be deasphalted prior to solvent extraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.