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 ガス化部会, 日本エネルギー学会 燃焼部会
会議名: 第53回石炭科学会議
回次: 53
開催地: 福山市生涯学習プラザ（広島県福山市）
開催日: 2016/10/26 - 2016/10/27
The fluidity and evolution of gaseous O-containing species (CO, CO2 and H2O) during carbonization of caking coal, non- or slightly-caking coals and their coal blends at a heating rate of 3 °C/min have been studied with gieseler plastometer and a flow-type quartz-made fixed bed reactor to make clear the influence of particle size, blend ratio and oxygen species on coal fluidity. The gieseler maximum fluidity (MF) values decrease with increasing the amount of non- or slightly-caking coals added to caking coal. In addition, blend coals fluidity trends decrease with decreasing particles size of non- or slightly-caking coals in blend coals. When caking coal and non- or slightly-caking coals are absolutely carbonized, the MF value decreases almost linearly with increasing total amount of gaseous O-containing species evolved up to the initial softening temperature. Furthermore, H2O formation rates during carbonization of coal blends (250-425 μm-caking coal and 250-425 μm or 53-150 μm-non- or slightly-caking coal) are different from their calculation values based on the results of 250-425 μm-caking coal and 250-425 μm or 53-150 μm-non- or slightly-caking coal. It may be thus probable that H2O derived from non- or slightly-caking coal gives a negative effect on coal fluidity of coal blends.
