Modeling of Catalyst Deactivation in Catalytic Wet Air Oxidation of Phenol in Fixed Bed Three-Phase Reactor
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Modeling of Catalyst Deactivation in Catalytic Wet Air Oxidation of Phenol in Fixed Bed Three-Phase Reactor

Authors: Akram Golestani, Mohammad Kazemeini, Farhad Khorasheh, Moslem Fattahi

Abstract:

Modeling and simulation of fixed bed three-phase catalytic reactors are considered for wet air catalytic oxidation of phenol to perform a comparative numerical analysis between tricklebed and packed-bubble column reactors. The modeling involves material balances both for the catalyst particle as well as for different fluid phases. Catalyst deactivation is also considered in a transient reactor model to investigate the effects of various parameters including reactor temperature on catalyst deactivation. The simulation results indicated that packed-bubble columns were slightly superior in performance than trickle beds. It was also found that reaction temperature was the most effective parameter in catalyst deactivation.

Keywords: Catalyst deactivation, Catalytic wet air oxidation, Trickle-bed, Wastewater.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1327889

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References:


[1] V. S. Mishra, V. V. Mahajani, J. B. Joshi, "Wet air oxidation," Ind. Eng. Chem. Res., vol. 34, pp. 2-48, 1995.
[2] S. K. Bhargava, J. Tardio, J. Prasad, K. Foger, D. B. Akolekar, S. C. Grocott, "Wet Oxidation and Catalytic Wet Oxidation," Ind. Eng. Chem. Res., vol. 45, pp. 1221-1258, 2006.
[3] F. Luck, "A review of industrial catalytic wet air oxidation processes," Catal. Today, Vol. 27, pp. 195-202, 1996.
[4] S. Imamura, "Catalytic and nom-catalytic wet oxidation," Ind. Eng. Chem. Res., vol. 38, pp.1743-1753, 1999.
[5] Y. I. Matatov-Meytal, M. Sheintuch, "Catalytic Abatement of Water Pollutants," Ind. Eng. Chem. Res., vol. 37, pp. 309-326, 1998.
[6] P. L. Mills, R. V. Chaudhari, "Reaction engineering of emerging oxidation processes," Catal. Today, vol. 48, pp. 17-29, 1999.
[7] J. G. Rodrigo, M. Lopes, R. Quinta-Ferreira, "Trickle-bed CFD studies in the catalytic wet oxidation of phenolic acids," Chem. Eng. Sci., vol. 62, pp. 7045-7052, 2007.
[8] A. Singh, K. K. Pant, K. D. P. Nigam, "Catalytic wet oxidation of phenol in a trickle-bed reactor" ,Chem. Eng. J., vol. 103, pp. 51-57, 2004.
[9] F. Larachi, I. Iliuta, K. Belkacemi, "Catalytic wet air oxidation with a deactivating catalyst analysis of fixed and sparged three-phase reactors," Catal. Today, vol. 64, pp. 309-320, 2001.
[10] S. Hamoudi, K. Belkacemi, F. Larachi, "Catalytic Oxidation of Aqueous Phenolic Solutions: Catalyst Deactivation and Kinetic," Chem .Eng. Sci., vol. 54, pp. 3569-3576, 1999.
[11] S. Hamoudi, F. Larachi, A. Adnot, A. Sayari, "Characterization of Spent MnO2/CeO2 Wet Oxidation Catalyst by TPO-MS, XPS and S-SIMS," J. Catal., vol. 185, pp. 333-344, 1999.
[12] A. Pintar, J. Levec, "Catalytic oxidation of organics in aqueous solutions: I. Kinetics of phenol oxidation," J. Catal., vol. 135, pp. 345- 357, 1992.
[13] I. Iliuta, F. Larachi, B. P. A. Grandjean, "Pressure Drop and Liquid Holdup in Trickle Flow Reactors: Improved Ergun Constants and Slip Correlations for the Slit Model," Ind. Eng. Chem. Res., vol. 37, pp. 4542-4550, 1998.
[14] Z. Bensetiti, F. Larachi, B. P. A. Grandjean, G. Wild, "Liquid saturation in cocurrent upflow fixed-bed reactors: a state-of-the-art correlation", Chem. Eng. Sci., vol. 52, pp. 4239-4247, 1997.
[15] A. E. Saez, R. G. Carbonell, "Hydrodynamic Parameters for Gas-Liquid Cocurrent Flow in Packed Beds," AIChE J., vol. 31, pp. 52-62, 1985.
[16] I. Iliuta, F. Larachi, B. P. A. Grandjean, "Catalyst Wetting in Trickle- Flow Reactors, A Phenomenological Model," Chem. Eng. Res. Des., vol. 77, pp. 759-763, 1999.
[17] M. V. Rajashekharam, R. Jaganathan, V. Chaudhari, "A trickle-bed reactor model for hydrogenation of 2, 4 dinitrotoluene: experimental verification," Chem. Eng. Sci., vol. 53, pp. 787-805, 1998.
[18] I. Iliuta, F.C. Thyrion, O. Muntean, "Residence time distribution of the liquid in two-phase cocurrent downflow in packed beds: Air/newtonian and non-newtonian liquid systems," Can. J. Chem. Eng., vol. 74, pp. 783-796, 1996.
[19] I. Iliuta, F.C. Thyrion, O. Muntean, M. Giot, "Residence time distribution of the liquid in gas-liquid cocurrent upflow fixed-bed reactors," Chem. Eng. Sci., vol. 51, pp. 4579-4593, 1996.
[20] S. Goto, J. M. Smith, "Trickle-bed reactor performance. Part I. Holdup and mass transfer effects," AIChE J., vol. 21, pp. 706-713, 1975.
[21] C. N. Satterfield, M. W. Van Eek, G. S. Bliss, "Liquid-solid mass transfer in packed beds with downward concurrent gas-liquid flow," AIChE J., vol. 24, pp. 709-717, 1978.
[22] V. Speccia, G. Baldi, A. Gia netto, "Solid-Liquid Mass Transfer in Concurrent Two-Phase Flow through Packed Beds," Ind. Eng. Chem. Proc. Des. Dev., vol. 17, pp. 362-367, 1978.
[23] S. Mochizuki, T. Matsui, "LiquidÔÇösolid mass transfer rate in liquid-gas upward cocurrent flow in packed beds," Chem. Eng. Sci., vol. 29, pp. 1328-1330, 1974.
[24] G. Delaunay, A. Storck, A. Laurent, J. Charpentier, "Electrochemical Study of Liquid-Solid Mass Transfer in Packed Beds with Upward Cocurrent Gas-Liquid Flow," Ind. Eng. Chem. Proc. Des. Dev., vol. 19, pp. 514-521, 1980.
[25] I. Iliuta, F. Larachi, B. P. A. Grandjean, "Residence time, Mass transfer and Back-mixing of the Liquid in Trickle Flow Reactors Containing Porous Particles," Chem. Eng. Sci., vol. 54, pp. 4099-4109, 1999.