Manufacture of hydrocracked low pour lubricating oils
US4283271A · kind A · utility
39Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1980 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | Jun 12, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Hydrocracked, low pour lubricating oils of good stability are manufactured by passing a suitable hydrocarbon feed sequentially through a hydrocracking zone, a catalytic dewaxing zone, and a hydrotreating zone, all at high pressure and in that order, and with separation of hydrocrackate from recycle hydrogen prior to dewaxing. Only clean makeup hydrogen is fed to the dewaxer, passed through the hydrotreater, and then on to the hydrocracker, thereby providing an exceptionally efficient process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.