75.石炭急速熱分解による脂肪族炭素の揮発分への転換特性

抄録

Yallourn and acid-treated Yallourn coals were pyrolyzed at temperatures of 773-923K in a downward-entrained particle flow pyrolyzer and in a Curie point pyrolyzer. Distributions of aliphatic and aromatic carbons in char, tar and gas were measured by a ^<13>C-NMR spectroscopy together with gaseous product distributions. The results clearly showed that 35-55% of aliphatic carbons in coal is converted into aromatic carbon. It was also found that both fracrions of aliphatic and aromatic carbons in tar remain unchanged with temperature up to 923K while that of aliphatic carbon in char decreases mainly due to its aromatization.