Kinetics of Direct Liquefaction of Coal in the Presence of Molybdenum—Iron Catalyst

Abstract

Many studies on direct liquefaction of coal have been carried out since the 1910's, and the effects of kinds of coal, pasting oil and catalyst, moisture, ash, temperature, hydrogen pressure, stirring and heating-up rate of paste on coal conversion, asphaltene and oil yields have been also investigated by many workers. However, few kinetic studies on their effects to reaction rate have been reported. In this paper the effects of kinds of coal, pasting oil, catalyst and reaction temperature on coal liquefaction are illustrated, and a few kinetic models for catalytic liquefaction of five coals carried out in an autoclave reactor are proposed. I. EXPERIMENTAL Five coal materials were used in this study. These were Miike, Taiheiyo, Hikishima (Japanese coals), Morwell (Australian) and Bukit Asam (Indonesian) coals. The proximate and ultimate analyses of these coals are shown in Table 1. All of catalysts were powdered before Table 1. Analyses of sample coals use. In all of the