Abstract
For the purpose of prospecting the operability of noncatalytic coal liquefaction with solvent, experimental results for Taiheiyo-coal, Wandoan-coal and Yallourn-coal briquet were compared with results computed from a model for the mixed-flow reactor. This model comprised the gas-liquid equilibrium of solvent and disintegration of swelling coal during liquefaction.
The results of calculation showed that the amount of solvent in the liquid phase of the slurry was small under the conditions in which plugging trouble broke out in the reactor. From this model it was suggested that evaporation of the solvent in the slurry was one of the causes of the coking trouble in the reactor and that the difference of operability with nature of coal was attributable to the difference in the conversion of swelling coal.
