Disposition of a high nitrogen content oil stream
US4287051A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 1979 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Nov 8, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/002
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of denitrogenating viscous oils containing a relatively high content of nitrogenous compounds and of disposing of a resulting high nitrogen content oil stream, characterized by forming a raw oil stream and a first viscous bottoms stream that would not be operably pumpable to a partial oxidation unit without the inclusion of viscosity lowering constituents; extracting the nitrogenous compounds from the raw oil stream with an operable acid solvent to produce a raffinate oil of low nitrogen content oil and an extract stream of low viscosity, high nitrogen content oil; recovering the acid solvent from the extract stream, simultaneously producing a small volume stream of low viscosity, high nitrogen content oil; admixing the low viscosity high nitrogen content oil with the high viscosity bottoms stream to provide a pumpable mixed stream; sending the mixed stream to a partial oxidation unit to produce hydrogen; employing the produced hydrogen for hydrogenation of the raffinate oil at mild conditions; and recycling the acid solvent to the extraction step. Additional and alternative steps are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.