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- Title
EFFECT OF KINETIC MODELS ON HOT SPOT TEMPERATURE PREDICTION FOR PHTHALIC ANHYDRIDE PRODUCTION IN A MULTITUBULAR PACKED BED REACTOR.
- Authors
Orozco, G. A.; Gomez, J. R.; Sanchez, O. F.; Gil, I. D.; Duran, A.
- Abstract
Although there are several kinetic models for the production of phthalic anhydride from the partial oxidation of o-xylene, only few studies have compared the effect of the kinetic model on the prediction of the hot-spot temperature. In this work, the predicted temperature profile for the partial oxidation of o-xylene to phthalic anhydride in a multitubular packed bed reactor was obtained for different kinetic mechanisms using one-dimensional pseudo-homogeneous and heterogeneous models. The predicted temperature profile using the one-dimensional heterogeneous model with the kinetic model of Calderbank et al. but with the adjusted kinetic and transport parameters proposed by Anastasov presented a good correlation with regard to experimental data. Nevertheless, in the hot-spot zone deviations, up to 30 K were presented. In conclusion, the temperature performance in the production of phthalic anhydride is suitably predicted by the one-dimensional heterogeneous model and the Calderbank et al.'s kinetic model. Though, prediction using bidimensional models should be done to establish the best correlation with experimental data.
- Subjects
PHTHALIC acid; ANHYDRIDES; CHEMICAL kinetics; TEMPERATURE; OXIDATION
- Publication
Canadian Journal of Chemical Engineering, 2010, Vol 88, Issue 2, p224
- ISSN
0008-4034
- Publication type
Article
- DOI
10.1002/cjce.20276