Flexible method for producing oil bases with a ZSM-48 zeolite
US6884339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2001 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Mar 7, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the production of very high quality base oils optionally with simultaneous production of high quality middle distillates comprises the stages for hydrotreatment, preferably hydrocracking, on Y or beta zeolite, and atmospheric distillation. The effluent is subjected to a catalytic dewaxing on the ZSM-48 catalyst. The process then comprises a hydrofinishing stage for hydrogenating the aromatic compounds, preferably on a catalyst that comprises at least one noble metal of group VIII, chlorine and fluorine, and the stages of atmospheric and vacuum distillation. The hydrofinishing stage is conducted at a temperature lower by 20-200° C. than the catalytic dewaxing stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.