Systems and methods for upgrading heavy oils
US11084992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2017 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Oct 16, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/308
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In accordance with one embodiment of the present disclosure, a heavy oil may be upgraded by a process that may include removing at least a portion of metals from the heavy oil in a hydrodemetalization reaction zone to form a hydrodemetalization reaction effluent, removing at least a portion of metals and at least a portion of nitrogen from the hydrodemetalization reaction effluent in a transition reaction zone to form a transition reaction effluent, removing at least a portion of nitrogen from the transition reaction effluent in a hydrodenitrogenation reaction zone to form a hydrodenitrogenation reaction effluent, and reducing aromatics content in the hydrodenitrogenation reaction effluent in a hydrocracking reaction zone by contacting the hydrodenitrogenation reaction effluent to form an upgraded fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.