Heterogeneous catalytic reactors undergoing chemical deactivation. Part I: Deactivation kinetics and pellet effectiveness

✍ Scribed by H. H. Lee; J. B. Butt

• Publisher: American Institute of Chemical Engineers
• Year: 1982
• Tongue: English
• Weight: 580 KB
• Volume: 28
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690280307

✦ Synopsis

Abstract

A general expression for the time‐dependence of the activity of a catalyst pellet affected by both chemical deactivation and diffusion is developed. Specific results are given for both uniform and pore‐mouth poisoning, with parallel and series poisoning mechanisms. Comparisons show a satisfactory agreement between theoretical and experimental results. A pellet effectiveness representing the combined effect of deactivation and diffusion is also developed in a form suitable for direct inclusion in reactor conservation equations.