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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0344324 (1982-02-01) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 289 인용 특허 : 3 |
A combination physical separation process and thermal fluidized bed process for recovering products from tar sands. The process includes initially separating a portion of the sand from the tar sand through a physical separation process, yielding a bitumen-rich concentrate. The bitumen-rich concentra
A combination physical separation process and thermal fluidized bed process for recovering products from tar sands. The process includes initially separating a portion of the sand from the tar sand through a physical separation process, yielding a bitumen-rich concentrate. The bitumen-rich concentrate is introduced into a heated fluidized bed and products are recovered and distilled into their respective fractions. A coked sand is removed from the fluidized bed and placed into a combustor where the carbonaceous residue on the sand is burned to produce a hot burnt sand, a portion of which may be recycled to provide heat to the bitumen-rich concentrate in the fluidized bed. The coked sand and a certain fraction of the distilled products may be recycled to the physical separation process to improve the separation efficiency thereof.
A process for recovering products from tar sand comprising the steps of: obtaining a tar sand; preparing a bitumen-rich concentrate from the tar sand using an alkaline, hot water separation process, said bitumen-rich concentrate comprising from about 35% bitumen and about 65% sand by weight to about
A process for recovering products from tar sand comprising the steps of: obtaining a tar sand; preparing a bitumen-rich concentrate from the tar sand using an alkaline, hot water separation process, said bitumen-rich concentrate comprising from about 35% bitumen and about 65% sand by weight to about 45% bitumen and about 55% sand by weight; recovering products from the bitumen-rich concentrate by introducing the bitumen-rich concentrate into a fluidized bed while heating the bitumen-rich concentrate in the fluidized bed; removing a coked sand from the fluidized bed, said coked sand comprising sand having a carbonaceous residue thereon; recycling at least a portion of the coked sand to the alkaline, hot water separation process; burning the carbonaceous residue on at least a portion of the coked sand to produce a hot burnt sand; recycling at least a portion of the hot burnt sand to the bitumen-rich concentrate; distilling the recovered products; isolating a fraction formed during distillation within the temperature range of about 140°C. to about 370°C.; and recycling the isolated fraction to the alkaline, hot water separation process.
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