Upgrading of low rank coal for the production of solid fuel and cokes material is considered to be the most promising topics from the environmental point of view. In this study, liquid-phase upgrading of low rank coals (Taiheiyo, Buckskin, Kansk-Achinsk, Yallourn and Fortuna coals) was investigated at 350〜440℃ using decalin and coal tar as solvent under 2MPa of initial nitrogen atmosphere. Coking property of upgraded coal obtained from thermal and catalytic reaction of subbituminous and brown coal with solvent was evaluated in fluidity measured by gieseler-plastometer and discussed with analytical data.
