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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | UP-0868031 (2007-10-05) |
등록번호 | US-7749379 (2010-07-26) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 342 |
Compositions and methods are provided for separating bitumen from oil sands in an efficient and environmentally acceptable manner, and for recovering residual bitumen from existing tailings ponds.
What is claimed is: 1. A method for separating bitumen from oil sands, comprising: contacting a separating composition comprising from about 0.001% to about 2.5% by weight of 2,5,8,11-tetramethyl-6-dodecyn-5,8-diol ethoxylate; from about 0.1% to about 4.0% by weight of an aromatic phosphate ester h
What is claimed is: 1. A method for separating bitumen from oil sands, comprising: contacting a separating composition comprising from about 0.001% to about 2.5% by weight of 2,5,8,11-tetramethyl-6-dodecyn-5,8-diol ethoxylate; from about 0.1% to about 4.0% by weight of an aromatic phosphate ester having the formula: wherein R1 is a C1-C5 linear or branched alkyl group and n=1 to 8; up to about 4.5% by weight of sodium acid pyrophosphate; up to about 4.5% by weight of tetrapotassium pyrophosphate; from about 2% to about 9.5% by weight of sodium hydroxide; and from about 1.7% to about 8.6% by weight of phosphoric acid with oil sands comprising bitumen and sand; heating the separating composition and the oil sands; agitating the separating composition and the oil sands; and recovering the bitumen and sand as separate products. 2. The method of claim 1, wherein the heating comprises heating the separating composition and the oil sands to from about 32° C. to about 72° C. 3. The method of claim 1, wherein the contacting comprises contacting the separating composition and the oil sands in a ratio of from about 2:3 to about 3:2. 4. The method of claim 1, wherein the method is performed without addition of an organic solvent. 5. A method for separating bitumen from tailings, comprising contacting a separating composition comprising from about 0.001% to about 2.5% by weight of 2,5,8,11-tetramethyl-6-dodecyn-5,8-diol ethoxylate; from about 0.1% to about 4.0% by weight of an aromatic phosphate ester having the formula: wherein R1 is a C1-C5 linear or branched alkyl group and n=1 to 8; up to about 4.5% by weight of sodium acid pyrophosphate; up to about 4.5% by weight of tetrapotassium pyrophosphate; from about 2% to about 9.5% by weight of sodium hydroxide; and from about 1.7% to about 8.6% by weight of phosphoric acid with tailings comprising bitumen and sand; heating the separating composition and the tailings; agitating the separating composition and the tailings; and recovering the bitumen and sand as separate products. 6. The method of claim 5, wherein the heating comprises heating the separating composition and the tailings to from about 32° C. to about 72° C. 7. The method of claim 5, wherein the contacting comprises contacting the separating composition and the tailings in a ratio of from about 2:3 to about 3:2. 8. The method of claim 5, wherein the method is performed without addition of an organic solvent.
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