✦ LIBER ✦

Sensitivity analysis of tubular packed-bed reactor by pseudohomogeneous 2–D model

✍ Scribed by Gh. Juncu; O. Floarea

Publisher: American Institute of Chemical Engineers
Year: 1995
Tongue: English
Weight: 546 KB
Volume: 41
Category: Article
ISSN: 0001-1541
DOI: 10.1002/aic.690411211

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✦ Synopsis

Abstract

The sensitivity behavior of the fixed‐bed catalytic reactors is examined using the pseudohomogeneous two‐dimensional model with radial dispersion for the first‐order irreversible reaction. The sensitivity criteria developed are tested. The relations between self‐similarity and thermal runaway are studied. The pseudoadiabatic type of operation is taken into consideration. The boundaries of the sensitivity region in the space Da – Pe are compared with those predicted by the standard one–dimensional model and the criterion of Hagan et all The sensitivity behavior of the system in the space α – Bi is also discussed.

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A two-phase and two-dimensional mathematical model of heat transfer within tubular flow apparatus packed with a bed of pellets has been proposed, in which radial distributions of the bed voidage and of the fluid velocity over the cross-section of the apparatus are considered. The thermokinetic param