Please enter verification code
Predicting Reactants’ Hydrodynamic Behavior Inside Non-Porous Catalytic Reactors
American Journal of Chemical Engineering
Volume 2, Issue 6, November 2014, Pages: 71-75
Received: Sep. 16, 2014; Accepted: Oct. 13, 2014; Published: Oct. 20, 2014
Views 3391      Downloads 264
Ihab Shigidi, Department of Chemical Engineering, King Khalid University, P. O. Box 9036, Abha 61413, Saudi Arabia; Department of Chemical Engineering, Al-Neelain University, P. O. Box 10179, Khartoum, Sudan
Article Tools
Follow on us
Gaseous reactants usually have complex behaviors ranging from unsteady flow patterns to oscillations due to the differences in various physical and chemical properties. Such behaviors hinder the complete understanding coupled between transport processes and chemical kinetics. Systems within which chemical reactions are coupled with diffusion and convective transport have chemical engineering applications. The aim of the present work is to simulate the steady state behavior of a reaction-diffusion-convection system using the finite element method for ammonia decomposition. The overall model used consists of the flow and mass transport modules which are described by the continuity, Stokes equations and the convective dispersion equation respectively. Concentration profile, velocity and pressure fields presented are for a first order reaction for ammonia decomposition inside tubular non-porous catalytic reactors. Two different types of reactors are considered, the first one represents a fuel cell and the second is for a catalytic wall reactor.
Ammonia Decomposition, Catalytic Reactor, Finite Element Modelling, Convection Transport, Penalty Scheme, Diffusion
To cite this article
Ihab Shigidi, Predicting Reactants’ Hydrodynamic Behavior Inside Non-Porous Catalytic Reactors, American Journal of Chemical Engineering. Vol. 2, No. 6, 2014, pp. 71-75. doi: 10.11648/j.ajche.20140206.11
WANG, W., PADBAN, N., YE, Z., ANDERSSON, A. & BJERLE, I. 1999. Kinetics of ammonia decomposition in hot gas cleaning. Industrial & engineering chemistry research, 38, 4175-4182.
CHELLAPPA, A., FISCHER, C. & THOMSON, W. 2002. Ammonia decomposition kinetics over Ni-Pt/Al for PEM fuel cell applications. Applied Catalysis A: General, 227, 231-240.
T.V. CHOUDHARY, SIVADINARAYANA, C. & GOODMAN, A. D. W. 2001. Catalytic ammonia decomposition: COx-free hydrogen production for fuel cell applications. Catalysis Letters, 72, 197-201.
NASSEHI, V. 2002. Practical aspects of finite element modelling of polymer processing, Wiley Chichester.
REDDY, J. N. & GARTLING, D. K. 2010. The finite element method in heat transfer and fluid dynamics, CRC press.
ZIENKIEWICZ, O. C. & TAYLOR, R. L. 2000. The finite element method: Solid mechanics, Butterworth-heinemann.
KOU, J. & SUN, S. 2014. Upwind discontinuous Galerkin methods with mass conservation of both phases for incompressible two‐phase flow in porous media. Numerical Methods for Partial Differential Equations.
WAGHODE, A., HANSPAL, N., SHIGIDI, I., NASSEHI, V. & HELLGARDT, K. 2005. Computer modelling and numerical analysis of hydrodynamics and heat transfer in non-porous catalytic reactor for the decomposition of ammonia. Chemical engineering science, 60, 5862-5877.
WU, J., NOFZIGER, D., WARREN, J. & HATTEY, J. 2003. Modeling ammonia volatilization from surface-applied swine effluent. Soil Science Society of America Journal, 67, 1-11.
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
Tel: (001)347-983-5186