Modelling and Simulation of Gauze Reactor of Ammonia Oxidation
American Journal of Chemical Engineering
Volume 4, Issue 1, January 2016, Pages: 16-22
Received: Jan. 10, 2016; Accepted: Jan. 20, 2016; Published: Feb. 1, 2016
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Authors
Mohamed Abdel Salam, Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
Ehssan Nassef, Petrochemicals Engineering Department, Faculty of Engineering, Pharos University, Alexandria, Egypt
Eman Elkheriany, Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
Yehia El Tawel, Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
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Abstract
Modelling of catalytic ammonia oxidation reactor for nitric oxide production in nitric acid plant over gauzes of Pt/Rh catalyst was the subject of current study. Viscosity, mass transfer and kinetic equations were used for the gas mixture feeding the reactor, partial pressure and mole fraction of ammonia was essential, also wire diameter was considered to detect platinum losses during oxidation operation. In order to investigate the performance of catalytic oxidation reactor, ordinary equation for determining of conversion yields of ammonia to nitric oxide was solved in mathematical model numerically. Variations of conversion with inlet mixture temperature, mixture concentration, inlet pressure and gauze temperature during cycle were investigated. Platinum losses rate as platinum oxide (PtO2) was studied with gauzes surface temperature by using numerical solution of the mathematical model. Modelling results were compared with an industrial reactor data. Comparing industrial data for all studied variables with those obtained by using mathematical model have shown the higher degree of accuracy of the model to predict the operating values with minimum deviation.
Keywords
Nitric Acid, Kinetics of Ammonia Oxidation, Platinum Losses
To cite this article
Mohamed Abdel Salam, Ehssan Nassef, Eman Elkheriany, Yehia El Tawel, Modelling and Simulation of Gauze Reactor of Ammonia Oxidation, American Journal of Chemical Engineering. Vol. 4, No. 1, 2016, pp. 16-22. doi: 10.11648/j.ajche.20160401.13
Copyright
Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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