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US 4,071,434 AGranted
Recovery of oil from tar sands
AssigneePhillips Petroleum Company
InventorPhillip H. Gifford, II
Life of this patent
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Abstract
A tar sands slurry containing sand particles of varying sizes dispersed therein is passed into a classifier wherein it is subdivided into at least two streams, each stream containing either coarse or fine solids. The stream containing coarse solids is directed to a separate solids removal zone where the solids are removed. The effluent from the solids removal zone and the fine solid containing stream are then fed to a coking zone.
Claims5
A process for recovery of oil and other valuable components from tar sand which comprises:
- a. introducing into a mixing zone tar sand and a sufficient amount of a solvent to form a flowable slurry;
- b. mixing tar sand and solvent in the mixing zone until a slurry of desired viscosity is produced;
- c. subdividing the slurry produced in step (b) into two streams, a first stream containing coarse solids and a second stream containing fine solids;
- d. passing the said first stream through a solids removal zone to remove the coarse solids therein;
- and
- e. introducing the first stream, after it has passed through the solids removal zone, and the second stream, still containing the fine solids, into a coking zone to produce vapors and coke.
3 more elements
A process for recovery of oil and other valuable components from tar sand which comprises:
- a. introducing into a mixing zone tar sand and a sufficient amount of a solvent comprising a heavy bottoms oil to form a flowable slurry;
- b. mixing tar sand and solvent in the mixing zone until a slurry of desired viscosity is produced;
- c. subdividing the slurry produced in step (b) into two streams, a first stream containing coarse solids and a second stream containing fine solids;
- d. passing the said first stream through a solids removal zone to remove the coarse solids therein;
- e. introducing the first stream, after it has passed through the solids removal zone, and the second stream, still containing the fine solids, into a coking zone to produce vapors and coke;
- f. withdrawing the coke produced in the coking zone;
- g. feeding the vapors produced in the coking zone into a fractionating zone;
- and
- h. fractionating the liquid vapors to produce gas, gasoline, oil fractions including high boiling fractions, and heavy bottoms oil.
6 more elements
Dependencies are inferred from the claim text.