Patent ID: 9738844
Date: 2017-08-22
CPC Classifications: C10L,Y02E

Claim:
1. A method of manufacturing a molded solid fuel, the method comprising: a pulverization step of pulverizing low-grade coal; a mixing step of mixing the pulverized low-grade coal and a solvent oil to produce a slurry; a dehydration step of heating and dehydrating the slurry to produce a dehydrated slurry; a solid-liquid separation step of separating the solvent oil from the dehydrated slurry to produce a cake; a drying step of heating the cake to further separate the solvent oil from the cake to produce powdery upgraded coal; and a molding step of pressure-molding the powdery upgraded coal by a molding machine without adding and/or mixing a binder, wherein in the molding step, a coolant is sprayed onto a roll surface of the molding machine, to cool the surface to a degree sufficient that a roll surface temperature of the molding machine is maintained at 100° C. or lower, wherein in the molding step, the molding machine is accommodated in a molding chamber having an opened carry-in part for the powdery upgraded coal produced in the drying step and an opened carry-out part for the molded solid fuel provided from the molding machine, and humidity in the molding chamber is maintained to 85% or more.