抄録
We have recently presented a new coal fractionation method that can separate a bituminous coal into several fractions having different molecular masses without decomposing the coal. The method extracts coal with a non-polar solvent such as tetralin or 1-methylnaphthalene by increasing the extraction temperature stepwise up to 350℃. In this study the fractionation method was applied to characterize two kinds of Hypercoals (HPC's) obtained under different heating profiles from the same coal. It was clarified that the HPC which gave a coke of higher strength contained a larger amount of the fractions which melts at around 400℃ than the other one. The changes occurred in preparing these HPC's were also discussed by comparing the results of fractionation of the raw coal with those of HPC's.
