Process for the preparation of low pour point lubricating oils
US4028224A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1975 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Dec 17, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G47/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Process for the preparation of low pour point lubricating oils comprising: PA1 I. vacuum distilling a heavy naphthenic crude oil feedstock containing from about 2 to 10 weight % of sulfur based on the weight of the feedstock, said feedstock exhibiting a specific gravity ranging from about 5.degree. to 20.degree. API to obtain at least one distillate cut exhibiting a boiling range of from about 500.degree. to 1000.degree. F and a specific gravity ranging from about 10.degree. to 25.degree. API PA1 ii. hydrocracking said distillate cut in at least one hydrocracking zone in contact with a hydrocracking catalyst at a temperature from about 650.degree. to 850.degree. F, a hydrogen partial pressure of about 500 to 5000 psig. and a space velocity of from about 0.1 to 2.0 V/V/Hr; PA1 Iii. removing the low boiling light ends from the hydrocrackate; and PA1 Iv. recovering a low pour point lubricating oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.