Ash-free coal production method
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United States of America Patent
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May 10, 2016
Grant Date -
Oct 23, 2014
app pub date -
Dec 7, 2012
filing date -
Dec 15, 2011
priority date (Note) -
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Abstract
Provided is a method that controls and uniformizes fluidity of ash-free coal. The method includes the steps of obtaining an ash-free coal by removing a solvent from a solution containing a coal component dissolved therein (ash-free coal obtaining step (solvent recovering unit 8)); and mixing a plurality of coals of different types or components thereof, where the coals are capable of individually giving ash-free coals having different fluidities (mixing step (see reference signs B1 to B6)). The ash-free coal obtaining step (solvent recovering unit 8) obtains the ash-free coal by removing the solvent from the solution containing components of the coals which have been mixed.
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