Method for recovering solvent from froth treatment tailings with in-situ steam generation
US9719023B1 · kind B1 · utility
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3References
20Claims
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Key dates
| Filing date | Mar 15, 2016 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Mar 15, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for recovering hydrocarbon diluent from froth treatment tailings comprising bitumen, solids, hydrocarbon diluent and water is provided, comprising: introducing the froth treatment tailings into a vessel chamber and allowing the coarse solids to settle to the bottom of the vessel and form a solids layer having a portion of hydrocarbon diluent and a portion of water trapped therein; and heating the water in the solids layer to generate steam bubbles in-situ and strip the hydrocarbon diluent associated with the coarse solids to produce stripped tailings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.