Transport processes and conversion in an isothermal fixed-bed catalytic reactor

✍ Scribed by Rasmuson Anders

• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 358 KB
• Volume: 37
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(82)80093-6

✦ Synopsis

Abstmet-Transient mass transfer and reaction in an isothermal fixed-bed catalytic reactor is studied mathema'tically. An analytical solution is derived in the form of an infinite integral depending on eight dimensionless parameters. The solution includes the effects of axial dispersion, fluid-to-particle diffusion, intraparticle diffusion, and reversible first-order adsorption for a first-order reaction on the catalyst surface. The conversion at steadystate is briefly discussed. Two special cases of the general solution are given: the case of no axial dispersion and the case of negligible adsorption resistance. A method for integrating the infinite integral is given in an earlier paper.

INTRODIJC'ITON

A central problem in the design of a fixed-bed catalytic reactor is the prediction of the conversion of the reacting component, or the concentration-time relationship of the eftIuent stream. Apart from the influence of adsorption and reaction rates, a mathematical model of the process should take into account axial dispersion, and external