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A predictive model of carbon attrition in fluidized bed combustion and gasification of a graphite

✍ Scribed by P. Salatino; L. Massimilla

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
929 KB
Volume
44
Category
Article
ISSN
0009-2509

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✦ Synopsis

A predictive model of reaction-assisted attrition of carbon in a fluidized bed has been developed. It embodies a constitutive relationship between the rate of regression of particle external surface and the local degree of carbon conversion. Compared to a previous descriptive model (Salatino and Massimilla, 1985, Chem. Engng Sci., 40, 1905), this considers that such a relationship can be separately determined from experiments of purely mechanical attrition of carbon pre&onverted under kinetic control. Model capabilities have been explored on the basis of results of an experimental study directed to characterize attrition behavior of a graphite in fluidized bed combustion and in gasification with COP.

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