In order to develop a reaction simulator for purposes of direct coal liquef
action, a kinetic model for the initial stage of the reaction was developed
for sub-bituminous Wandoan and Tanitoharum coals. The kinetic parameters i
n the model were determined by fitting the model to experimental data obtai
ned by autoclave tests. Based on the model, a simulator for a preheater was
proposed. The yields of liquefaction products predicted by the simulator w
ere verified from data obtained at the outlet of the preheater in a process
support unit with a capacity of 1 t of coal per day. (C) 2001 Elsevier Sci
ence Ltd. All rights reserved.