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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0704236 (1976-07-12) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 274 인용 특허 : 1 |
This application discloses a process for accomplishing in situ retorting of coal, or a similar hydrocarbon by constructing a substantially impervious retorting area, and then fragmenting the coal to provide a substantially homogeneous, porous mass. After pyrolysis due to the introduction of oxygen-c
This application discloses a process for accomplishing in situ retorting of coal, or a similar hydrocarbon by constructing a substantially impervious retorting area, and then fragmenting the coal to provide a substantially homogeneous, porous mass. After pyrolysis due to the introduction of oxygen-containing gas at one portion and withdrawal of oil and gas at another portion, the direction of gas flow is reversed to convert the char into a relatively high B.T.U. gas product.
A process for the in situ gasification of coal, or similar hydrocarbon solid, by means of a reversing cycle oxygen-steam system, the process comprising the steps of: a. forming at least one retorting room in a coal deposit by segregating an area from surrounding areas by means of substantially imper
A process for the in situ gasification of coal, or similar hydrocarbon solid, by means of a reversing cycle oxygen-steam system, the process comprising the steps of: a. forming at least one retorting room in a coal deposit by segregating an area from surrounding areas by means of substantially impervious walls to prevent substantial gas leakage from said retorting room, said retorting room having a roof defined by the coal deposit and further having a gas inlet passage and a gas outlet passage; b. blasting within said retorting room to effect at least a partial roof collapse to form a substantially homogeneous, porous rubblized coal mass in said retorting room; c. introducing oxygen-containing gas in said gas inlet passage of the retorting room and initiating and conducting pyrolysis of the coal mass at a temperature of between about 900°and about 2500°F.; d. withdrawing oil and gas products from the pyrolysis through said gas outlet passage of the retorting room; e. after substantial completion of the pyrolysis conducted in step (c) and product withdrawal from step (d), reversing the direction of gas flow through the retorting room by introducing steam into said gas outlet passage thereby to effect a water-gas reaction with residual carbon in said retorting room to produce a relatively high BTU gas product and f. withdrawing said relatively high BTU gas product from the water-gas reaction through said gas inlet passage of the retorting room.
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