| 摘要 |
Coal is converted into hydrocarbon compounds using supercritical water. Th e process involves two stages; a first stage in which carbonaceous material is reacted with supercritical water at above 850K to produce a first supercritical fluid reaction mixture comprising hydrocarbon compounds; and a second stage in which hydrocarbon compounds are extracted from coal mixed with at least a portion of the first supercritical fluid at a temperature within a range of from the supercritical temperature of water to about 695K. Char from the second stage is finely divided and may be either b e used outside the process, e.g. in a coal fired power station or a gasifier, or us ed as at least a portion of the carbonaceous material used in the first stage.
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