METHOD FOR PRODUCING MODIFIED COAL

摘要

PROBLEM TO BE SOLVED: To provide a method for producing modified coal which can inhibit spontaneous ignition at low cost without using a volatile component such as tar separated and collected by dry distillation. SOLUTION: The method for producing modified coal includes: a drying step S1 in which dried coal 2 is obtained by drying low-quality coal 1; a dry distillation step S2 in which dry-distilled coal 5 is obtained by dry-distilling the dried coal 2 that has been obtained in the drying step S1; a mixing step S3 in which the dry-distilled coal 5 that has been obtained in the dry distillation step S2 is mixed with fine powder coal 3 that has been generated and collected during the drying in the drying step S1; and a compression molding step S4 in which modified coal 7 is obtained by compression molding mixed coal 6 that has been obtained in the mixing step S3. COPYRIGHT: (C)2011,JPO&INPIT