A gas-solid reaction with nonuniform distribution of solid reactant

✍ Scribed by C. G. Dassori; J. W. Tierney; Y. T. Shah

• Publisher: American Institute of Chemical Engineers
• Year: 1988
• Tongue: English
• Weight: 714 KB
• Volume: 34
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690341113

✦ Synopsis

A pore-pellet model is used to analyze experimental data for SO, removal using CuO impregnated on alumina as a sorbent. The effect of structural changes in the active solid (CuO) is included in the analysis and found to be important. The changes are characterized by three parameters: the ratio of solid product (CuSO,) molal volume to solid reactant (CuO) molal volume, the weight fraction of active solid, and the radial distribution of the active solid within the pellet.

The calculated kinetic constants are independent of CuO weight fraction and can be used for pellets with different CuO weight fractions. For the data set used in this work, it is shown that some degree of nonuniformity in the CuO distribution within the alumina matrix is needed in order to obtain a good fit of the data by the model.