A two-dunenslonal gram model has been developed to descnbe solid-gas reactlons m a cyhndncal pellet of firute length The grams are assumed to be spherical NumerIcal solutions of the model have been compared to udimte cyhnder soluttons. mfimte slab soluhons, and the approximate mfimte cyhnder and mfi
Analysis of gas—solid reactions: Formulation of a general model
✍ Scribed by V.B. Mantri; A.N. Gokarn; L.K. Doraiswamy
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 590 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0009-2509
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✦ Synopsis
A generalised zone reaction model for gas-solid reactions is proposed. It has been shown that the model reduces to the existing models under certain specific conditions which are defined in terms of the width of the reaction zone. Finally criteria are developed for the applicability of the most commonly used shrinking core and homogeneous models.
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Zinc sulfide pellets sintered at 12OO"C, l000"C, 800"C and 600"C were partially oxidized in a single pellet reactor. Sulfur profiles of these samples were measured using Auger electron spectroscopy (AES) and electron probe microanalysis (EPMA). These profiles showed the coexistence of three zones: a