Numerical Simulation of Catalytic Combustion Based on Different Catalyst Structures

Abstract:

The catalytic combustion of methane over a single pellet catalyst of different structures was modeled by two-dimensional numerical simulations. The same boundary conditions as wall as methods were selected to compare the properties of combustion in the catalysts and the combustion efficiency of the gas flow. The results indicate that the egg-shell type of catalyst is suitable for fast combustion and it can improve the efficiency of utilizing catalyst especially for noble metal catalyst. For situations where the active section of the catalyst is prone to be poisoned or where the lost of catalyst weight will happen, the egg-white or egg-yolk type is recommended for the reason that it can protect the catalyst from deactivation and the decrease of combustion efficiency is not significant. In additional, the model and the method presented can support the design and choose of the catalyst for different fuels.

• Periodical: Advanced Materials Research (Volumes 791-793)
• Pages: 311-314
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.791-793.311
• Online since: September 2013
• Authors: Pei Wen Wang, Yang Du, Wei Dong Shen, Jian Jun Liang, Jia Feng Xu
• Keywords: Catalyst Structure, Catalytic Combustion, Computational Fluid Dynamics (CFD), Simulation

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