Method for preparing lubricating base oils by using vacuum distilled deasphalted oil
US8834706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2011 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Oct 11, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing lubricating base oils by using vacuum distilled deasphalted oil, and more specifically, to a method for preparing various kinds of lubricating base oils by distilling a distillate obtained from a solvent deasphalting (SDA) process under reduced pressure to obtain heavy deasphalted oil (H-DAO) and light deasphalted (Lt-DAO) and then treating the H-DAO and the Lt-DAO by catalytic reactions, respectively. According to the present invention, it is possible to obtain heavy lubricating base oil (150BS) of a high viscosity grade which can not be obtained by a known catalytic reaction and a lubricating base oil of group III by hydrogenation, in a high yield, and thus economical efficiency is excellent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.