Upgrading of bitumen asphaltenes by hot water treatment containing carbonate (C-2726)
US5326456A · kind A · utility
23Cited by
16References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 2, 1993 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Apr 2, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G21/003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for upgrading bitumen asphaltenes obtained from tar sands to hydrocarbons which comprises contacting the bitumen with a deasphalting solvent to yield a deasphalted oil and a residual solid asphaltene, separating the residual solid asphaltene from the deasphalted oil and treating the solid asphaltene fraction with superheated water containing a soluble carbonate salt at temperatures of from 300.degree. to 425.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.