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
後援: 東北大学
会議名: 第51回石炭科学会議
回次: 51
開催地: 東北大学工学部 青葉記念会館
開催日: 2014/10/22 - 2014/10/23
The purpose of this study was to examine devolatilization behavior of coals under high temperature combustion conditions and to evaluate the effect of swelling property on combustion characteristics. For this purpose, a swelling coal (bituminous coal) and two non-swelling coals (bituminous and sub-bituminous coals) have been burned in a quartz glass tube reactor with a single particle temperature measurement system. Images of burning particles were obtained using a two-color pyrometer mounted at a high-speed camera and analyzed. Analysis results showed that devolatilization behavior in the single particle level differed among the tested coals. In case of the swelling coal, devolatilization occurred locally through pores on the particle surface and the transition from devolatilization to char combustion took longer time compared to the cases of 2 non-swelling coals. This paper discusses burn-out characteristics of coals in relation to swelling characteristics on theses findings.