主催: 社団法人 日本エネルギー学会 石炭科学部会, 社団法人 日本エネルギー学会 コークス工学研究部会
共催: 化学工学会 エネルギー部会, 日本学術振興会 石炭・炭素資源利用技術第148委員会, 日本エネルギー学会 重質油部会
会議名: 第46回石炭科学会議
回次: 46
開催地: 鹿児島東急ホテル
開催日: 2009/11/26 - 2009/11/27
p. 44-45
Swelling behaviour of coal with CO_2 has been investigated. The expansion of coal matrix was observed with a digital microscope equiped high pressure cell. Pulse ^1H-NMR spectroscopy was used with the aim to evaluate the change in macromolecular structure of coal. The expansion ratio of coal increases with increase in CO_2 pressure. The signal of coal sample is deconvoluted into two components, that is, relatively slowly decaying component, L1 and rapidly decaying component, G. In a similar manner as the expantion ratio, the fractional intensity and the T_2 value for L1 component increases in proportional to the CO2 pressure. The results indicate that the expantion of coal matrix might be caused by swelling of coal molecules with CO_2.
