Upgrading shale oil by a combination process
US4605489A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1985 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Jun 27, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G21/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for reducing the nitrogen content of shale oil is disclosed. The method comprises selectively extracting nitrogen-containing compounds to form a nitrogen-lean raffinate and a nitrogen-rich extract. The nitrogen-lean raffinate is distilled to form a distillate having a further reduced nitrogen content and a bottoms having a further increased nitrogen content. The bottoms is hydrotreated to remove nitrogen-containing compounds. Extracted shale oil compounds may be combined with the bottoms prior to the hydrotreatment or may be used to generate hydrogen gas for the hydrotreatment. Arsenic-containing compounds are removed from the distillate by extraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.