Abstract
The kinetics of combustion of pulverized coal depends both on the intrinsic reactivity of the coal and on mass and heat transfer effects. Measurements of diffusion coefficients at high temperatures has been carried out for two chars obtained from pulverized coal using a nonisobaric chromatographic technique. Due to low mass transfer resistance at higher temperature, experimental values of diffusion coefficients could be measured only up to 500 K. Extrapolation of the results to combustion temperatures ( ca 1500 K) showed that pore diffusion and the intrinsic reactivity of the coal controlled the overall rate of combustion for the samples chosen. The importance of micropores and micropore enlargement during combustion was established, as was the necessity and the means to decouple intrinsic reactivity and mass transfer in studies of coal combustion.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
