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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0347836 (1982-02-11) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 271 인용 특허 : 1 |
An improved coal liquefaction process is provided whereby coal conversion is improved and yields of pentane soluble liquefaction products are increased. In this process, selected feed coal is pulverized and slurried with a process derived solvent, passed through a preheater and one or more dissolver
An improved coal liquefaction process is provided whereby coal conversion is improved and yields of pentane soluble liquefaction products are increased. In this process, selected feed coal is pulverized and slurried with a process derived solvent, passed through a preheater and one or more dissolvers in the presence of hydrogen-rich gases at elevated temperatures and pressures, following which solids, including mineral ash and unconverted coal macerals, are separated from the condensed reactor effluent. The selected feed coals comprise washed coals having a substantial amount of mineral matter, preferably from about 25-75%, by weight, based upon run-of-mine coal, removed with at least 1.0% by weight of pyritic sulfur remaining and exhibiting vitrinite reflectance of less than about 0.70%.
A method for selection of feed coal for processing by direct liquefaction utilizing catalytic materials derived solely from said feed coal to produce low-ash, low-sulfur hydrocarbon products including solvent refined coal, and coal derived pentane soluble oil, which consists essentially of: (a) remo
A method for selection of feed coal for processing by direct liquefaction utilizing catalytic materials derived solely from said feed coal to produce low-ash, low-sulfur hydrocarbon products including solvent refined coal, and coal derived pentane soluble oil, which consists essentially of: (a) removing a substantial portion of mineral material from a run-of-mine coal to provide a washed coal having at least about 1.0%, by weight of pyritic sulfur, (b) measuring the vitrinite reflectance of said coal, and (c) selecting for use as said feed coal substantially only said washed coal having a vitrinite reflectance of less than about 0.70%.
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