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. 6-7
Temperature-programmed pyrolysis of low rank coals physically mixed with goethite-rich limonite ore has been studied with a fixed bed quartz reactor for the purpose of developing a novel co-processing method of the removal of coal-bound nitrogen and the reduction of goethite. The limonite at 5-30 mass% loading promotes the formation of N_2 from brown coal at 900℃ and the consequent nitrogen removal, though the effect levels off beyond 10 mass% and thus seems to be limited. The XRD measurements after pyrolysis show that goethite can readily be reduced α-Fe, irrespective of limonite loading, and part α-Fe reacts with a small amount of carbon to form a solid solution. This method may have the potential for the simultaneous production of low nitrogen chars and reduced iron materials by utilizing low-valued coals and limonite ores.