| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a modified solid fuel by which a manufacturing cost is reduced, an environmental load is reduced, high strength is attained for conveyance and the like and spontaneous ignition is suppressed and to provide the modified solid fuel manufactured by the manufacturing method. <P>SOLUTION: When low grade coal is ground, a solvent oil component is mixed with the ground low grade coal to prepare slurry, the slurry is heated to a temperature equal to or higher than a boiling point of water, water contained in the slurry is vaporized, the solvent oil component is separated from the slurry to form coal powder, and the coal powder is compression-molded to manufacture the solid fuel, a nonvolatile component contained in the low grade coal is extracted by the solvent oil component by heating the slurry to the temperature equal to or higher than the boiling point of water, the outer surface of the low grade coal and the inner surface in the fine pore are coated with the extracted nonvolatile component and the content of a heavy oil component added from outside is made to be lower than 0.5 mass%, preferably substantially 0% to the solid fuel after dried. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
