59.石炭軟化溶融時の流動性に対する多環芳香族炭化水素類の添加効果

概要

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Using a Gieseler plastometry, the changes in the fluidity were observed after adding a certain amount of reagents such as polycyclic aromatic hydrocarbons, nitrogen-containing aromatic compounds, oxygen-containing aromatic hydrocarbons which were components of coal tar to the coal. The reference maximum fluidity temperature of the coal is 460℃ and the maximum fluidity is 972 dial division per minute (ddpm). The evaluation of the fluidity after adding 1 mass% of each reagent to the coal showed that the maximum fluidity improved to more than 2000 ddpm when the polycyclic aromatic hydrocarbon whose molecular weight was 250-302 was added. On the other hand, the addition of the nitrogen-containing aromatic compounds or the oxygen-containing aromatic hydrocarbons did not result in the improvement of the fluidity. When the anthraquinone was added, the maximum fluidity dropped to as low as 269 ddpm. The boiling point of the anthraquinone is 380℃, and it can be considered that it does not exist in coal in the thermoplastic phase. However, it is estimated that the maximum fluidity of coal dropped because the anthraquinone had some kind of effect on the molecules of coal below the softening temperature of coal and its effect appeared in the coal thermoplastic phase.
一般社団法人日本エネルギー学会の論文
2006-10-12