抄録
Industrial processes of coal liquefaction and studies on the direct liquefaction using powder catalysis are reviewed. Influences in the liquifaction on the reaction time, temperature, pressure, catalysis, pasting oils, and elementary components of coal are discussed from the results on the batch expreiments using autoclaves.
Relationship between the reaction conditions and elementary components of coal are explained. Heat and material balance, and the characteristics of the produced oil are also illustrated with regard to Begius-I. G. process.
