Closed loop solvent extraction process for oil sands
US8771502B2 · kind B2 · utility
3Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2010 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jul 17, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to a method comprising contacting an oil sand with a suitable solvent to generate a solvated oil sand slurry; separating solvent-diluted bitumen from the solvated oil sand slurry to generate (a) a solvent-diluted bitumen and (b) a slurry with increased solids concentration; and filtering the slurry with increased solids concentration. The method of the present invention may be used to produce a low ash bitumen product and dry tailings from oil sands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.