Modeling of a pilot-scale trickle bed reactor for the catalytic oxidation of phenol

Wu, Qiang, Hu, Xijun, Yue, Po Lock, Feng, Jian, Chen, Xi, Zhang, Huiping and Qiao, S.Z. (2009) Modeling of a pilot-scale trickle bed reactor for the catalytic oxidation of phenol. Separation and Purification Technology, 67 2: 158-165. doi:10.1016/j.seppur.2009.03.021

Author Wu, Qiang
Hu, Xijun
Yue, Po Lock
Feng, Jian
Chen, Xi
Zhang, Huiping
Qiao, S.Z.
Title Modeling of a pilot-scale trickle bed reactor for the catalytic oxidation of phenol
Journal name Separation and Purification Technology   Check publisher's open access policy
ISSN 1383-5866
Publication date 2009-06-02
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.seppur.2009.03.021
Volume 67
Issue 2
Start page 158
End page 165
Total pages 8
Editor G Chen, A de Haan, C.Tien, B Van der Bruggen
Place of publication Netherlands
Publisher Elsevier Science
Collection year 2010
Language eng
Subject C1
850402 Hydrogen-based Energy Systems (incl. Internal Hydrogen Combustion Engines)
090402 Catalytic Process Engineering
100708 Nanomaterials
Formatted abstract
A mathematical model was developed to simulate the catalytic wet air oxidation (CWAO) of aqueous phenol in a trickle bed reactor (TBR). Both 'axial dispersion' and 'plug flow' models were proposed. 'Steady-state' mass transfers across different phases inside the reactor have all been considered in parallel with oxidation reactions catalyzed by heterogeneous copper catalyst supported on activated carbon. The changes in the concentrations of oxygen and phenol in various phases were thus depicted as a function of bed length. In order to validate the accuracy of the established TBR model, a series of experiments on phenol oxidation were performed on a pilot-scale TBR containing 5.61 of catalysts. The model was found able to give satisfactory predictions for nearly half of all the runs. The discrepancies between the experimental and modeling results were investigated for the less promising runs. it was also noticed that similar simulation results could be attained from 'axial dispersion' model against 'plug flow' model. Following the discussion on the changes of phenol and oxygen concentrations in the various phases, it is finally concluded that the performance of the TBR of this study depends largely on gas-to-liquid mass transfer process. Further suggestions with regards to reactor optimization are also proposed on the basis of experimental outcome. © 2009 Elsevier B.V. All rights reserved.
Keyword Trickle bed reactor
Mass transfer
Wet air oxidation
Copper/activated carbon catalyst
Q-Index Code C1
Q-Index Status Confirmed Code

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Created: Thu, 25 Mar 2010, 12:53:33 EST by Sharon Paterson on behalf of Aust Institute for Bioengineering & Nanotechnology