Method of forming a mesophase pitch from a coal extract suitable for processing to a high value coke
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United States of America Patent
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Nov 11, 2014
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N/A
app pub date -
Jun 22, 2011
filing date -
May 24, 2007
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Abstract
The present disclosure provides methods and systems for coal liquefaction and obtaining a mesophase pitch. A method of obtaining a quinoline insoluble-free and ash-free mesophase pitch may include exposing a coal to a hydrogenated vegetable oil in the presence of a coal-derived solvent to form a slurry, elevating the temperature of the slurry to facilitate liquefying the coal and liberating a volatile matter, separating the insoluble components from the slurry to obtain a de-ashed coal extract that is quinoline insoluble-free, and distilling the coal extract under vacuum to obtain a mesophase pitch with a softening point in the range of 25 degrees Celsius to 160 degrees Celsius, wherein the mesophase pitch can be coked to obtain an anisotropic coke. A quinoline insoluble-free and ash-free pitch may be obtained by the method.
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