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. 68-69
Catalytic gasification of an Indonesian low rank coal has been studied with a fixed bed quartz reactor. Ca^<2+> and Na^+ cations are separately and consecutively ion-exchanged with the coal using aqueous solutions of Ca(OH)_2 and natural soda ash to produce a 3.8% Ca/1.0% Na catalyst. The XRD measurement after pyrolysis at 700℃ reveals the absence of any Ca and Na species, suggesting the formation of nanoscale particles. The Ca/Na shows the larger effect on the steam gasification than a single 3.5% Ca or 1.6% Na catalyst prepared by the same method, and char conversion with the Ca/Na reaches almost 100% after 1h at 700℃. The use of the binary catalyst can lower reaction temperature by >100℃, compared with the un-catalyzed gasification.
