石炭液化溶剤の設計

概要

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Abstract　To clarify interactions between coal liquefaction solvents, Yallourn, Wandoan and Taiheiyo coals were liquefied in binary solvent systems composed of hydrogen donor (tetralin) and non-donor, and hydrogen donor ability (HDA) of binary solvent systems were evaluated quantitatively by using anthracene as coal model. Coals were readily liquefied by adding fluorene, phenanthrene, indene or sulfur in tetralin. Non-donor solvents were not effective if they were used alone, however,dehydrogenation reaction of tetralin was accelerated by the addition of above solvents. This fact suggested the presence of hydrogen shuttling reaction. Harmful effects on coal conversions were observed when n-paraffin or 1-olefin were mixed with tetralin or indene. The HDA scale reflected the results of coal conversion very well. However, HDA of tetralin-phenanthrene and tetralin-sulfur mixture was underestimated because hydrogen accepting ability of anthracene was lower than that of coal fragment. In previous paper, HDA of 26 kinds of anthracene oils was correlated wel1 with conversion ratio for Yal1ourn and Taiheiyo coal. Present results indicate the possibility of the presence of coal fragmentation via hydrogenation at ipso position in addition to direct thermal fragmentation. In the solvent extracting liquefaction methods, HDA scale defined in this study is one of the most important characteristics of coal liquefaction solvent.
山形大学の論文
1988-01-20