Abstract
Because of the three-phase, solid-liquid-gas nature of most coal liquefaction reactions, the opportunity presents itself for significant mass transfer limitations in the rate of the overall process. To better characterize the degree of mass transfer in coal liquefaction systems, a detailed study of mass transfer in several types of coal liquefaction reactors has been begun. The methodology employs a model oxygen-sulfite reaction system to provide the needed information. This report presents the mass transfer characteristics of a batch magnedrive autoclave reactor. Interfacial areas and mass transfer coefficients are presented as a function of agitation rate. The direct application of this data to coal liquefaction awaits the procurement of similar data for other reactor types. This work is in progress and will be reported as it becomes available.
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