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Reactions of solid particles with nonuinform distribution of solid reactant: The volume reaction model

✍ Scribed by P.A. Ramachandran; M.P. Dudoković

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
870 KB
Volume
39
Category
Article
ISSN
0009-2509

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✦ Synopsis

The effect of non-uniform solid reactant distribution on conversion of solid particles in gas-solid reactions is analyzed based on the volume reaction model. Certain special features of such systems are pointed out. The possibility of ash layer formation in the kinetically controlled regime is discussed. Conditions leading to single or double ash layer formation, both at the center and surface of the particle, in the intermediate regime of diffusion with simultaneous reaction are described. Detailed mathematical equations which are useful for calculation of the conversion-time relationship for particles with non-uniform solid reactant distribution are presented. Comparison is made to reaction of uniform particles and differences in required reaction time for desired conversion are outlined.

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