主催: 日本エネルギー学会, 石炭科学部会, コークス工学研究部会, 重質油部会
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
会議名: 第56回石炭科学会議
回次: 56
開催地: ウィンクあいち
開催日: 2019/10/29 - 2019/10/30
p. 40-41
To develop a new blending technique which can control coal compatibility, we focused on surface tension of softening coals which probably affects adhesion phenomena between coal particles. However there is no method to measure the surface tension of coal a t softening temperature. In this study, to overcome this difficulty, we devised a method to measure surface tension of semi cokes obtained by heat treatment of coals at 500°C as a substitute for softening coals. We investigated the relationship between str ength of coke and standard deviation of the surface tension distribution which is a new proposed factor calculated from the surface tensions of single coal brands used in the coal blend. As a result, the larger standard deviation of the surface tension dis tribution among coal blend , the lower strength coke was produced.
