Method for separating undesired components from coal by an explosion type comminution process

摘要: Process for the fractionation of a porous or fluid-permeable hydrocarbonaceous solid, such as coal, containing an admixture mineral matter and matter, into separate enriched fraction fraction. In this process, solid is comminuted to convert in coal discrete particles having mean volumetric diameter less than about 5 microns without substantially altering size originally present coal. As result comminution, can be fractionated from provide hydrocarbon lesser concentration minerals original uncomminuted material higher material. A preferred method comminuting porros i.e. first form slurry fluid water methanol. This then heated pressurized temperatures pressures excess critical temperature pressure fluid. The resultant supercritically passed expansion zone maintained at lower pressure, preferably ambient effect comminution shattering by rapid explosion forced during heating pressurization slurry. supercritical conditions employed produce shattered product comprising mixture particle equivalent inorganic unchanged that solid. fraction, turn, has density, greater solvent solubility different reactivity oxygen does feed also includes subfraction size, volume distribution, 2 which contain no sulfur compounds.