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Scale-up and Modeling of Fixed-Bed Reactors for Catalytic Phenol Oxidation over Adsorptive Active Carbon

Suwanprasop, Somsaluay and Eftaxias, Athanasios and Stüber, Franck and Polaert, Isabelle and Julcour-Lebigue, Carine and Delmas, Henri Scale-up and Modeling of Fixed-Bed Reactors for Catalytic Phenol Oxidation over Adsorptive Active Carbon. (2005) Industrial & Engineering Chemistry Research, vol. 44 (n° 25). pp. 9513-9523. ISSN 0888-5885

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Official URL: http://dx.doi.org/10.1021/ie050242d

Abstract

The wet air oxidation of phenol over a commercial active carbon catalyst has been studied in laboratory and pilot plant Fixed Bed Reactors at mild temperatures and oxygen partial pressures of 120-160 ºC and 0.05-0.2 MPa, respectively. The performance of the Fixed Bed Reactors has been assessed and compared to each other for both up-and downflow operation mode. Depending on the flow mode and reactor scale, distinct phenol destruction rates have been observed in the experiments. A series of batch experiments are carried out to obtain phenol removal kinetics, which are subsequently implemented in the modelling of the pilot Fixed Bed Reactor. A one-dimensional non-isothermal Piston Dispersion model is developed to describe in detail the interplay of reaction kinetics, gas-liquid hydrodynamics and heat and mass transfer in both flow directions. The model predicts reasonably well the experimental data, thus allowing for a thorough explanation of the observed pilot reactor performance.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Universitat Rovira i Virgili (SPAIN)
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
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Deposited By: Hélène Dubernard
Deposited On:24 Oct 2008 08:10

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