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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0664570 (1976-03-08) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 262 인용 특허 : 1 |
A method of extracting energy and chemical values from coal in situ including the steps of establishing passages among two or more coal seams underground and the surface of the ground wherein one coal seam is consumed by in situ combustion with the hot exit gases diverted through a second seam of co
A method of extracting energy and chemical values from coal in situ including the steps of establishing passages among two or more coal seams underground and the surface of the ground wherein one coal seam is consumed by in situ combustion with the hot exit gases diverted through a second seam of coal enroute to the surface. The second seam of coal is dewatered, then subjected to pyrolysis, with enriched exit gases captured at the surface.
A method of extracting energy and chemical values from coal in situ wherein there are first and second subsurface coal beds separated by other subsurface material, comprising the steps of, establishing passages interconnecting the first and second coal beds and connecting at least said second coal b
A method of extracting energy and chemical values from coal in situ wherein there are first and second subsurface coal beds separated by other subsurface material, comprising the steps of, establishing passages interconnecting the first and second coal beds and connecting at least said second coal bed to a surface location, igniting the second coal bed to establish in situ gasification thereof, capturing hot exit gases resulting from the gasification of the second coal bed and directing the hot exit gases to and through the first coal bed to remove volatile material from the first coal bed, injecting a sealant material into portions of the first coal bed after volatiles have been removed therefrom whereby the hot gases flowing through the first coal bed will follow alternate paths through the first coal bed, capturing the hot gases and entrained volatiles emanating from the first coal bed, and transferring the hot gases and entrained volatiles to the surface.
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