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- In relation to this article, we declare that there is no conflict of interest.
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Received December 23, 2016
Accepted February 9, 2017
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
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Novel multi-scale diffusion model for catalytic methane combustion
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
huangk@seu.edu.cn
Korean Journal of Chemical Engineering, May 2017, 34(5), 1366-1376(11), 10.1007/s11814-017-0037-x
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Abstract
A multi-scale model of methane catalytic combustion was built by a series of balance equations and diffusion equations, and these equations were solved through the computational fluid dynamics (CFD) software. The difference between this work and previous model is the diffusion process in catalyst coating was considered. By analyzing the methane conversion, temperature distribution and mass fraction contours of every component, the performance of multi-scale model was compared with that of the pure CFD model without diffusion. The effects of diffusion, methane concentration, flow rate on the methane conversion and temperature distribution of monolithic reactor were also evaluated and discussed by the multi-scale model. The multi-scale model showed better accuracy than the pure CFD model without diffusion process. Different methane concentrations and gas flow rates had enormous effects on the methane conversion and temperature. Therefore, it was beneficial to the reaction process to adjust the methane concentration and gas flow rate appropriately.
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Chalermsinsuwan B, Thummakul T, Gidaspow D, Piumsomboon P, Korean J. Chem. Eng., 31(2), 350 (2014)
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Zhao Y, Zheng YF, Xin F, Chem. Reac. Eng. Technol., 20, 357 (2004)
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