The objective of these experimental and modeling studies is to develop an improved understanding of the kinetics of coal devolatilization which is relevant to suspension firing of powdered coal. These fundamental kinetic studies address several topics related to pulverized coal combustion and include both homogeneous and heterogeneous reactions. The principal topics include: (1) the pyrolysis and devolatilization of coal; and (2) the formation of char. Research activities include small-scale experimentation, interpretation of experimental results in terms of mechanistic understanding and the development and validation of kinetic models of fundamental processes. This report consists of two contributions. The first is from …
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The objective of these experimental and modeling studies is to develop an improved understanding of the kinetics of coal devolatilization which is relevant to suspension firing of powdered coal. These fundamental kinetic studies address several topics related to pulverized coal combustion and include both homogeneous and heterogeneous reactions. The principal topics include: (1) the pyrolysis and devolatilization of coal; and (2) the formation of char. Research activities include small-scale experimentation, interpretation of experimental results in terms of mechanistic understanding and the development and validation of kinetic models of fundamental processes. This report consists of two contributions. The first is from MIT entitled Intra-Particle Heat Transfer Effects in Coal Pyrolysis''. While this modeling study bears some similarity to the Ohio State work, it is proposed as the starting point for a more complete model which will include other boundary conditions as well as mass transfer effects. The second contribution is a report from UTRC entitled Effect of Heat Transfer on Tar and Light Gases From Coal Pyrolysis''. This work documents some of the changes in the chemical composition of the products of pyrolysis when the mode or rate of heat transfer is varied. 28 refs., 17 figs., 3 tabs.
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