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The effect of coal bed thickness was studied and compared between steam and CO2 gasification. Despite using small amounts of coal sample, both gasifying agents’ kinetics, i.e., steam and CO2, proved to be affected by bulk and interparticle diffusion. Comparison between the gasifying agents indicates that mass transfer effects are minimized when the raw material layer and particle size are smaller...
A new method to obtain the rate constant and activation energy independent of a kinetic model is proposed and evaluated for thermochemical conversion, specifically in the steam and CO2 gasification of coal and biomass. Recent works on gas–solid reactions are based on single-step chemical reaction models that have been increasing in complexity through the use of more regression parameters to fit experimental...
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