Volatiles Mass Transport with Particles of Softened Coal. Technical Progress Report, July 27, 1983-October 26, 1983

摘要

Volatiles products of coal pyrolysis are generated within the coal matrix and their transport out of the particle is accompanied by secondary reactions. In the thermal conversion processes of coal, the intraparticle transport and secondary reactions of volatiles can influence the distribution and yield of pyrolysis products significantly. Quantitative modeling of these processes requires analysis of the transport-kinetics coupling and treatment of the physical structure of the decomposing coal matrix. In the present work, a model for intra-particle chemical reactions, volatiles transport, and coal plasticity has been developed. The summary of the model description and its preliminary predictions are discussed in this report. Through the preliminary analysis of the model, the physical parameters of importance in the model are identified. Experiments to study these parameters will be discussed. 16 references, 2 figures. (ERA citation 09:025213)