Mineral oils: processes and products – Tar sand treatment with liquid
Patent
1984-12-21
1990-01-02
Pal, Asok
Mineral oils: processes and products
Tar sand treatment with liquid
208391, C10G 104
Patent
active
048911313
ABSTRACT:
Hydrocarbon liquids are recovered from carbonaceous materials such as tar sands utilizing a separation reagent formed in situ by reacting polar resin components of tar sands with an inorganic base such as sodium silicate in sonicated aqueous solution in absence of an organic solvent to form a surfactant.
When tar sands are added to the sonicated separation reagent, the surfactant penetrates the bitumen which aids in removing the bitumen from the sand particles. The lighter, non-polar hydrocarbon oil fraction separate from the emulsion and rise to the top and are recovered by skimming. The heavier asphaltenes and preasphaltenes complex with the polyvalent metals to form charcoal-like agglomerates which settle to the bottom of the treatment tank. The separation reagent forms during the reaction and can reach a concentration capable of dissolving bitumen. The separation reagent can be recovered and used in other processes after removal and recovery of the clay. The separation reagent must be substantially diluted after being recycled and reused to reduce solvation properties.
REFERENCES:
patent: 3422000 (1969-01-01), Bichard
patent: 3969220 (1976-07-01), Anderson et al.
patent: 4120777 (1978-10-01), Globus
patent: 4151067 (1979-04-01), Grow
Fu Yen Teh
Jang Long-Kuan
Kuo Jih-Fen
Sadeghi Kazem
Sadeghi Mohammad-Ali
Jacobs Marvin E.
Pal Asok
Tar Sands Energy Ltd.
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