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US 9,791,211 B2Granted
Methods and compositions for drying coal
AssigneeRoss Technology Corporation
InventorsPhilip R. Harsh, Michael F. Hurley, Andrew K. Jones, Vinod K. Sikka
Life of this patent
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Abstract
The present disclosure provides methods, compositions and systems for drying coal fines.
Claims17
A method of reducing the water associated with wet coal fines comprising:
- (a) contacting said wet coal fines with at least one water-collecting material;
- (b) collecting at least a portion of the water present in the wet coal fines with the water-collecting material, wherein said water-collecting material comprises a desiccant selected from the group consisting of alumina and calcium sulfate;
- (c) separating the particles of water-collecting material that contacted said wet coal fines;
- (d) removing at least a portion of the water from a portion of said water-collecting material that contacted said wet coal fines by drying;
- and
- (e) recycling at least a portion of the separated and dried water-collecting material from step (d) to step (a), thereby reusing the water-collecting material in a loop system.
3 more elements
A system for removing water from wet coal fines comprising:
- (a) a first location in which the wet coal fines are admixed with at least one water-collecting material to form an admixture of wet coal fines and said water-collecting material, wherein said water-collecting material comprises a desiccant selected from the group consisting of alumina and calcium sulfate;
- (b) a second location where at least a portion of said water-collecting material is removed from said admixture;
- (c) a third location wherein the portion of said water-collecting material removed from said admixture is dried;
- and
- (d) a transporter for transporting at least a portion of the water-collecting material obtained from the third location to be recycled back to the first location for admixture with said wet coal fines, thereby reusing the dried water-collecting material.
2 more elements
Dependencies are inferred from the claim text.