Modelling and Simulation of Gauze Reactor of Ammonia Oxidation

Mohamed Abdel Salam; Ehssan Nassef; Eman Elkheriany; Yehia El Tawel

doi:doi:10.11648/j.ajche.20160401.13

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Modelling and Simulation of Gauze Reactor of Ammonia Oxidation

Mohamed Abdel Salam, Ehssan Nassef, Eman Elkheriany, Yehia El Tawel

Published in American Journal of Chemical Engineering (Volume 4, Issue 1)

Received: 10 January 2016 Accepted: 20 January 2016 Published: 1 February 2016

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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.

Published in	American Journal of Chemical Engineering (Volume 4, Issue 1)
DOI	10.11648/j.ajche.20160401.13
Page(s)	16-22
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2016. Published by Science Publishing Group

Keywords

Nitric Acid, Kinetics of Ammonia Oxidation, Platinum Losses

References

[1]	P. Uronen, E. Kiukaanniemi, “Optimization of the ammonia oxidation process used in the manufacture of nitric acid”, University of Oulu, Finland.
[2]	Vlastimil FILA and Bohumil BERNAUER “A mathematical model of a gauze reactor for the ammonia oxidation”, Department of Inorganic Technology, Prague Institute of Chemical Technology, The Czech Republic 1993.
[3]	HOWARD F. RASE, Chemical reactor design for process plants, Case studies and design data, University of Texas at Austin.
[4]	Kirk/Othmer, “Encyclopedia of Chemical Technology” 3rd edition, John Wiley & Sons, New York, (1999-2014).
[5]	E. J. Nowak, “Catalytic oxidation of ammonia”, Process Research Division, New Jersey, 1966.
[6]	“UHDE Nitric acid plant manual”, EHC Company, Egypt, 2013.
[7]	Daniel A. Hickman and Lanny D. Schmidt, “Modeling Catalytic Gauze Reactors: Ammonia oxidation” Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota, 1991.
[8]	A. Farouk, H. Farrag, “Modelling of ammonia burner” Alexandria University, 2010.
[9]	Rdzawski, Z. M. and Stobrawa, J. P., “Microstructure stability of the Pt/Rh alloys used for catalytic ammonia oxidation”, Journal of achievements in materials and manufacturing engineering, 24, (2007).
[10]	Chatteree, I. B. and Joshi, J. B., “Modeling, simulation and optimization: Mono pressure nitric acid process”, Chemical Engineering Journal, 138, 556-557, (2008).
[11]	Lawrie Lloyd, “Handbook of industrial catalysts”, springer, 2011.
[12]	Jens Hagen, “Industrial catalysis a practical approach” Wiley-VCH, 2006.
[13]	Satterfield C. N, “Heterogeneous Catalysis in Practice” McGraw-Hill, New York 1980.
[14]	“Technical specification of Ammonia oxidation reactor”, UHDE, EHC company, Egypt, 2013.

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APA Style

Mohamed Abdel Salam, Ehssan Nassef, Eman Elkheriany, Yehia El Tawel. (2016). Modelling and Simulation of Gauze Reactor of Ammonia Oxidation. American Journal of Chemical Engineering, 4(1), 16-22. https://doi.org/10.11648/j.ajche.20160401.13

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ACS Style

Mohamed Abdel Salam; Ehssan Nassef; Eman Elkheriany; Yehia El Tawel. Modelling and Simulation of Gauze Reactor of Ammonia Oxidation. Am. J. Chem. Eng. 2016, 4(1), 16-22. doi: 10.11648/j.ajche.20160401.13

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AMA Style

Mohamed Abdel Salam, Ehssan Nassef, Eman Elkheriany, Yehia El Tawel. Modelling and Simulation of Gauze Reactor of Ammonia Oxidation. Am J Chem Eng. 2016;4(1):16-22. doi: 10.11648/j.ajche.20160401.13

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@article{10.11648/j.ajche.20160401.13,
  author = {Mohamed Abdel Salam and Ehssan Nassef and Eman Elkheriany and Yehia El Tawel},
  title = {Modelling and Simulation of Gauze Reactor of Ammonia Oxidation},
  journal = {American Journal of Chemical Engineering},
  volume = {4},
  number = {1},
  pages = {16-22},
  doi = {10.11648/j.ajche.20160401.13},
  url = {https://doi.org/10.11648/j.ajche.20160401.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20160401.13},
  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.},
 year = {2016}
}

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TY  - JOUR
T1  - Modelling and Simulation of Gauze Reactor of Ammonia Oxidation
AU  - Mohamed Abdel Salam
AU  - Ehssan Nassef
AU  - Eman Elkheriany
AU  - Yehia El Tawel
Y1  - 2016/02/01
PY  - 2016
N1  - https://doi.org/10.11648/j.ajche.20160401.13
DO  - 10.11648/j.ajche.20160401.13
T2  - American Journal of Chemical Engineering
JF  - American Journal of Chemical Engineering
JO  - American Journal of Chemical Engineering
SP  - 16
EP  - 22
PB  - Science Publishing Group
SN  - 2330-8613
UR  - https://doi.org/10.11648/j.ajche.20160401.13
AB  - 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.
VL  - 4
IS  - 1
ER  -

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Author Information

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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APA Style

Mohamed Abdel Salam, Ehssan Nassef, Eman Elkheriany, Yehia El Tawel. (2016). Modelling and Simulation of Gauze Reactor of Ammonia Oxidation. American Journal of Chemical Engineering, 4(1), 16-22. https://doi.org/10.11648/j.ajche.20160401.13

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ACS Style

Mohamed Abdel Salam; Ehssan Nassef; Eman Elkheriany; Yehia El Tawel. Modelling and Simulation of Gauze Reactor of Ammonia Oxidation. Am. J. Chem. Eng. 2016, 4(1), 16-22. doi: 10.11648/j.ajche.20160401.13

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AMA Style

Mohamed Abdel Salam, Ehssan Nassef, Eman Elkheriany, Yehia El Tawel. Modelling and Simulation of Gauze Reactor of Ammonia Oxidation. Am J Chem Eng. 2016;4(1):16-22. doi: 10.11648/j.ajche.20160401.13

Copy | Download

@article{10.11648/j.ajche.20160401.13,
  author = {Mohamed Abdel Salam and Ehssan Nassef and Eman Elkheriany and Yehia El Tawel},
  title = {Modelling and Simulation of Gauze Reactor of Ammonia Oxidation},
  journal = {American Journal of Chemical Engineering},
  volume = {4},
  number = {1},
  pages = {16-22},
  doi = {10.11648/j.ajche.20160401.13},
  url = {https://doi.org/10.11648/j.ajche.20160401.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20160401.13},
  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.},
 year = {2016}
}

Copy | Download

TY  - JOUR
T1  - Modelling and Simulation of Gauze Reactor of Ammonia Oxidation
AU  - Mohamed Abdel Salam
AU  - Ehssan Nassef
AU  - Eman Elkheriany
AU  - Yehia El Tawel
Y1  - 2016/02/01
PY  - 2016
N1  - https://doi.org/10.11648/j.ajche.20160401.13
DO  - 10.11648/j.ajche.20160401.13
T2  - American Journal of Chemical Engineering
JF  - American Journal of Chemical Engineering
JO  - American Journal of Chemical Engineering
SP  - 16
EP  - 22
PB  - Science Publishing Group
SN  - 2330-8613
UR  - https://doi.org/10.11648/j.ajche.20160401.13
AB  - 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.
VL  - 4
IS  - 1
ER  -

Copy | Download