主催: 日本エネルギー学会
共催: 化学工学会 (エネルギー部会), 大阪大学大学院工学研究科
会議名: 第39回石炭科学会議
回次: 39
開催地: 大阪大学 コンベンションセンター
開催日: 2002/10/29 - 2002/10/30
p. 73-74
Pyrolysis of five coals at high temperatures of ≧1000℃ has been studied with a fixed bed quartz or free fall graphite reactor to examine carbon structures in chars after devolatilization. The proportion of crystallized carbon with turbostratic structures increases irrespective of kind of coal, when pyrolysis temperature or solid residence time is raised from 1000 to1 350℃ or from 0 to 120sec, respectively. Highly dispersed CaO with the size of 20-50nm promotes transformation reactions of amorphous carbon to crystallized carbon. The reaction mechanism is discussed in term of interactions between CaO particles and char substrate.