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
A novel process composed of hydrothermal oxidation and hydrothermal decarboxylation was proposed and applied to liquefaction of brown coal. Coal is first oxidized under hydrothermal condition at ≤ 240℃ using oxygen with or without alkaline, and then the products of aromatic acids are decarboxylated using subcritical water (SbCW) at 350℃ with Cu_2O. The whole process is performed in water, which must be suitable for brown coal with high moisture content, and produces various light aromatics. This new and green "Cu_2O-SbCW" system showed a high efficiency for the decarboxylation of benzene/naphthalene carboxylic acids. Our proposed method is promising as an efficient brown coal liquefaction process without using hydrogen.
