27-06-2019 дата публикации
Номер: US20190194828A1
Принадлежит:
A method of producing advanced carbon materials can include providing coal to a processing facility, beneficiating the coal to remove impurities from the coal, processing the beneficiated coal to produce a pitch, and treating the pitch to produce an advanced carbon material such as carbon fibers, carbon nanotubes, graphene, carbon fibers, polymers, biomaterials, or other carbon materials. 1. A method of producing carbon fiber , comprising:providing an amount of raw coal, the raw coal including one or more impurities therein;beneficiating the amount of raw coal to selectively removing at least a portion of some of the one or more impurities in the raw coal to form beneficiated coal;processing the beneficiated coal to produce an amount of pitch; andmodifying at least some of the pitch to produce the carbon fiber;wherein the carbon fiber includes a selected amount of a remainder of the one or more impurities that were not removed while beneficiating the amount of the raw coal, processing the beneficiated coal, and modifying at least some of the pitch.2. The method of claim 1 , wherein beneficiating the amount of raw coal includes removing at least 75 wt. % of at least one of mercury claim 1 , arsenic claim 1 , cadmium claim 1 , water claim 1 , or volatile compounds.3. The method of claim 1 , wherein processing the beneficiated coal include pyrolyzing the beneficiated coal.4. The method of claim 3 , wherein pyrolyzing the beneficiated coal includes heating the beneficiated coal to about 400° C. to about 650° C. at atmospheric pressure.5. The method of claim 1 , wherein processing the beneficiated coal includes at least one of subjecting the beneficiated coal to a direct liquefaction process claim 1 , subjecting the beneficiated coal to an indirect liquefaction claim 1 , or using membranes.6. The method of claim 1 , further comprising capturing syngas.7. The method of claim 1 , wherein modifying at least some of the pitch to produce the carbon fiber includes modifying ...
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