Recovery of a carbonaceous liquid with a low fines content
US4699709A · kind A · utility
32Cited by
9References
6Claims
0Family size
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Inventor
Key dates
| Filing date | Sep 10, 1985 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Sep 10, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for removing solid fines in an extraction of bitumen by (1) extracting bitumen with a mixed solvent comprising at least one solvent with a solubility parameter higher than that of the bitumen and at least one solvent with a solubility parameter lower than that of the bitumen to obtain a bitumen laden solvent mixture and (2) treating the bitumen laden solvent mixture to remove the lower solubility parameter solvent to precipitate undissolved asphaltenic bitumen and solid fines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.