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Analysis of Char Combustion Including the Effect of Pore Enlargement

Gavalas, George R. (1980) Analysis of Char Combustion Including the Effect of Pore Enlargement. Combustion Science and Technology, 24 (5-6). pp. 197-210. ISSN 0010-2202. doi:10.1080/00102208008952438.

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The combustion of char particles including the effects of external mass transfer, surface reaction, pore diffusion, and pore growth is analyzed theoretically. A random pore model is used to relate pore surface area, pore volume and effective diffusivity to the local burnoff. The equations for oxygen concentration and burnoff as functions of time and position are solved analytically for the limiting case of strong diffusional limitations (high temperature or particle size) and numerically for the general case. The results include the variation of particle size and density with burnoff under conditions pertinent to pulverized and fluidized combustion. The analysis is compared with previous analyses from the literature.

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Gavalas, George R.0000-0003-1468-6835
Additional Information:© 1981 Gordon and Breach Science Publishers, Inc. Received October 16, 1979 and June 23, 1980; in final form September 5, 1980.
Issue or Number:5-6
Record Number:CaltechAUTHORS:20151105-083517788
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61881
Deposited By: Ruth Sustaita
Deposited On:06 Nov 2015 20:22
Last Modified:10 Nov 2021 22:55

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