Method of Obtaining a High Quality Coke from Low Rank Coal Liquefaction

摘要

The present disclosure provides methods and systems for coal liquefaction and obtaining a high quality coke from a low rank coal extract. A method of obtaining a high quality coke from a low rank coal extract may include exposing 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, distilling the coal extract under vacuum to obtain a pitch with a suitable softening point, and coking the pitch to obtain a coke. The coke may be at least one of an anisotropic coke, a metallurgical coke, a graphite coke, an anode coke, and a needle coke.

主权项

1. A method of obtaining a high quality coke from a low rank coal extract, comprising:
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; distilling the coal extract under vacuum to obtain a pitch with a suitable softening point; and coking the pitch to obtain a coke.