主催: 社団法人 日本エネルギー学会 石炭科学部会
共催: 化学工学会 エネルギー部会, 秋田大学工学資源学部
会議名: 第44回石炭科学会議
回次: 44
開催地: 秋田ビューホテル
開催日: 2007/10/11 - 2007/10/12
p. 20-21
We have previously proposed a coal fractionation which utilizes sequential thermal extraction below at 350℃. In this study we applied the fractionation method to an Australian brown coal, Loy Yang (LY), to examine the validity of the method for fractionating brown coal. By the fractionation method using 1-MN, tetralin, and water as the extraction solvent, LY coal was fractionated into 5 fractions: one solvent soluble fraction at room temperature, 3 extract fractions recovered as solids, and the residue. The total extraction yields using 1-MN, tetralin, and water were 47, 57, and 56%, respectively. All the solid extracts recovered, interestingly, softened and melted below 230℃. The solid extracts obtained using tetralin and water were further separated into 4 constituents, through a sequential solvent extraction, which have different softening and melting behaviours.