67 石炭熱時抽出における内部水素の挙動と抽出炭のコークス材性能への影響(コークス品質,抽出物添加)

概要

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Hyper-coal (HPC) is an ash-free coal produced by the solvent de-ashing technology. HPC has multi purpose quality for various uses. Especially, HPC has a large potential for a coke-additive to improve the coke strength, however the blending ratio of non- or slightly coking coal is higher. We found that the performance of HPC to the coke strength changed by its thermal history in the process^3). The HPC yield and characteristics are changed by the heat conditions, since the thermal relaxation and the thermal decomposition reactions are in competitive. The coal extraction yield and the characteristics of HPC maintain almost constant in the temperature holding time, even though in non-donor solvent. However, those values rapidly decrease when RC does not coexist in the solution. It suggests that the internal hydrogen transfer maintains the soluble structure if the surrounding molecule had transferable hydrogen. The high temperature and short contact conditions3) minimize the loose of transferable hydrogen, and obtain both high HPC yields and high performances as the coke-additive.
社団法人日本エネルギー学会の論文
2007-10-11