主催: 日本エネルギー学会 石炭科学部会, 日本エネルギー学会 コークス工学研究部会
共催: 日本学術振興会 石炭・炭素資源利用技術第148委員会, 化学工学会 エネルギー部会, 日本エネルギー学会 重質油部会, 日本エネルギー学会 エネルギー学部会
会議名: 第52回石炭科学会議
回次: 52
開催地: 伊勢市観光文化会館（三重県伊勢市）
開催日: 2015/10/28 - 2015/10/29
Chemical structures of caking and non-caking coals were evaluated by solid state ^1H and ^<13>C-NMR. Semi cokes were prepared by heat treatments of the caking coals at temperatures ranging from 400 to 500℃ and also studied with the NMR measurements. Sizes of aromatic clusters of the samples were estimated based on the quantitative information on the distributions of carbon and hydrogen atoms assigned to several different chemical structures. It was found that the aromatic cluster size of the caking coal increased remarkably with increasing temperature from 400 to 500℃, where it undergoes softening and re-solidification. On-line gas analysis during pyrolysis revealed that almost no hydrogen gas was evolved from 400 to 500℃, though the growth of aromatic cluster could accompany hydrogen formation.
