Process for removing sulfur from petroleum oils
US4283270A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1980 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | Jun 25, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G45/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to a process for desulfurizing petroleum oils and for improving the performance of known catalytic hydrodesulfurization processes. In accordance with the process, a narrow boiling fraction of a typical hydrodesulfurization feedstock is selectively removed prior to the introduction of said feedstock into the hydrodesulfurization unit. Feedstocks include gas oils, residual oils or other fractions which contain sulfur in the form of sulfides, disulfides and a part of a substituted ring such as thiophene, benzothiophene and dibenzothiophene. The invention embodies the discovery that certain intermediate sulfur compounds are the most refractory or difficult to remove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.