Catalyst deactivation, the loss over time of catalytic activity and selectivity is a problem of great and continuing concern in the practice of industrial catalytic processes. Catalyst regeneration procedures for fixed-bed reforming units can vary widely. While all regeneration procedures share common elements, it is very common for the procedures to have evolved over years as unit configurations and throughputs have changed. Sub-optimal regeneration procedures can have a number of negative impacts on subsequent operation. In this study two samples of catalytic reforming Pt/Al2O3 catalysts were obtained from operating fixed bed semi regenerative reactors which has run for 10,000 and 14000 hours. These samples which have undergone deactivation in the course of the operations were regenerated under varying conditions of temperature, pressure and chlorination to establish the appropriate regeneration conditions. The progress and extent of regeneration were monitored using FTIR, SEM, XRD, GC-MS and XRF. The carbon content and effectiveness of the regenerated catalysts were determined and the values were compared with that of fresh catalysts. The regenerated catalysts showed 98 – 99.5% of the catalyst activity under the conditions of temperature and pressure of 500°C and 15psi respectively. The established conditions are to guide economic operations of such units which to realize high quality reformates and long life of the catalysts.
| Published in | American Journal of Chemical Engineering (Volume 5, Issue 5) |
| DOI | 10.11648/j.ajche.20170505.12 |
| Page(s) | 98-110 |
| 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), 2024. Published by Science Publishing Group |
Catalytic Reforming, Deactivation, Regeneration, Catalyst Effectiveness, Catalyst Activity
| [1] | Sinfelt, J. R., Anderson, J. R., Boudart, M.. (1981) Catalytic reforming of hydrocarbons. In Catalysis Science and Technology; Vol. 1, P.257. |
| [2] | William C. B, Paul E. E, George J. B, Baton R, (1984) Catalyst regeneration in a catalytic reforming process. US patent 4440667. |
| [3] | Beltramini, J. N. (1995) Regeneration of reforming catalyst. In Catalytic Naphtha Reforming; Marcel Dekker: New York, P. 365. |
| [4] | Weiszmann, J. A., Meyers, R. A., Ed.; 1986. Catalytic re-reforming. In Handbook of Petroleum Refining Processes; McGraw-Hill: New York,; P.3-3. |
| [5] | Antos, G.; Moser, M.; Lapinski, M, (2004); The new generation of commercial catalytic naphtha reforming catalysts. In: Prentice, Marcel Dekker: Catalytic Naphtha Reforming New York P. 335. |
| [6] | Aguado, J, Serrano, J, Escola, J, and Briones, L, (2013) Deactivation and regeneration of Ni supported hierarchical Beta zeolite catalyst used in the hydroforming of oil produced by LDPE thermal cracking, Fuel, 109, 679. |
| [7] | Xiao, Z; Laplante, A. R (2004) “Çharacterizing and recovering the platinum group materials-a review’’. Minerals Engineering 17. P. 9-10. |
| [8] | Edgar, M. D. (1983), Catalytic reforming of naphtha in petroleum refineries. In Applied Industrial Catalysis; Leach, B. E., Ed.; Academic Press: New York; Vol. 1, P. 123. |
| [9] | Gary, J. H. and Handwerk, G. E. (1984). Petroleum Refining Technology and Economics (2nd Edition ed.). Marcel Dekker, Inc. ISBN 0-8247-7150-8. |
| [10] | Hafez Khiabani, N, Fathi, S, and Shokri, B ( 2015) Regeneration of naphta reforming catalyst 3using DBD plasma system 22nd International Symposium on Plasma Chemistry, July 5–10, 2015; Antwerp, Belguim. |
| [11] | Morris D. A and Calvinyl, B. (2015). Heterogeneous catalyst Deactivation and Regeneration:A Review. Catalysts 5(1), 145-269 doi 10.3390catal 501045. |
| [12] | Santosh, W and Sagar, K (2015). Catalyst Deactivation and Regeneration. International Journal of Scientific Engineering and Technology, Vol. No.4 Issue 105, 281-285. |
| [13] | Rahimpour, M. R, Iranshahi D, Pourazadi E, and Bahmanpour, M. A, (2012) Boosting the gasoline octane number in thermally coupled naphta reforming heat exchanger reactor using de optimization technique, Fuel, 97, 109. |
| [14] | Olori T. O (2015) Studies of Regeneration of Catalytic Reforming Catalyst (unpublished) MSc Research Thesis, Chem. Eng. Dept, Ahmadu Bello University Zaria. |
| [15] | Axens Process Brochures for Octanizing and Aromizing Processes (2002); Axens IFP Group Technologies, Rueil-Malmaison, Paris, France. |
| [16] | Mario, G, Courty, P, and Marcilly, C, (1997), Handbook of heterogeneous catalysis, edited by Eril, G, Knozinger, H, and Weikamp, J (VCH, Weinheimi). |
| [17] | Fung, S. C, (1994) Regenerating a reforming catalyst, Chemtech, 40. |
| [18] | Clause, O. Dupraz, C. and Frank, J. (1998). Continuing innovation in catalytic reforming, presented at the NPRA Annual Meeting, San Antonio. March 1998. |
| [19] | Gates, B. C.; Katzer, J. R.; Schuit, (1979) G. C. A. Reforming. In Chemistry of Catalytic Processes; McGraw-Hill: New York; P. 184. |
| [20] | Pieck, C. L, Vera, C. R, Querini, C. A, Parera, J. M, (2005), Differences in coke burning off from Pt- Sn/Al2O3 catalyst with oxygen or ozone. Applied Catalysis A: General 278, 173. |
| [21] | Hosseini S. A, Aligholi N., and Dariush S. (2011). Production of γ-Al2O3 from Kaolin; Open Journal of Physical Chem., Vol 1, Pg 23-27. |
| [22] | Bawa S. G, Ahmed A. S and Okonkwo P. C (2012) ‘ Thermal Transformation of Ammonium Alum Synthesized from Kankara Kaolin’ Nigerian Society of Chemical Engineers Conference Proceedings 15–17 th Nov. p. 39-42. |
| [23] | Yasuharu K., Takao K., Yoshio U. and Masatoshi S. (2005); Hydrodesulfurization of thiophene over Platinum supported on metal oxide catalysts. Muroran Institute of Technology. Pg 33-37. |
| [24] | Karla S. K. (2009). Essentials of Refinery Processes; Indian Oil Corporation Ltd Panipat Refinery. (Cited online at petrofed. winwinhosting.net on June 25, (2014) by 11:00AM). |
APA Style
Paul Chidi Okonkwo, Benjamin Aderemi, Taiwo Olamide Olori. (2017). Establishing the Appropriate Conditions of Regeneration of Cataytic Reforming Pt/AL2O3 Catalyst. American Journal of Chemical Engineering, 5(5), 98-110. https://doi.org/10.11648/j.ajche.20170505.12
ACS Style
Paul Chidi Okonkwo; Benjamin Aderemi; Taiwo Olamide Olori. Establishing the Appropriate Conditions of Regeneration of Cataytic Reforming Pt/AL2O3 Catalyst. Am. J. Chem. Eng. 2017, 5(5), 98-110. doi: 10.11648/j.ajche.20170505.12
AMA Style
Paul Chidi Okonkwo, Benjamin Aderemi, Taiwo Olamide Olori. Establishing the Appropriate Conditions of Regeneration of Cataytic Reforming Pt/AL2O3 Catalyst. Am J Chem Eng. 2017;5(5):98-110. doi: 10.11648/j.ajche.20170505.12
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Download@article{10.11648/j.ajche.20170505.12,
author = {Paul Chidi Okonkwo and Benjamin Aderemi and Taiwo Olamide Olori},
title = {Establishing the Appropriate Conditions of Regeneration of Cataytic Reforming Pt/AL2O3 Catalyst},
journal = {American Journal of Chemical Engineering},
volume = {5},
number = {5},
pages = {98-110},
doi = {10.11648/j.ajche.20170505.12},
url = {https://doi.org/10.11648/j.ajche.20170505.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20170505.12},
abstract = {Catalyst deactivation, the loss over time of catalytic activity and selectivity is a problem of great and continuing concern in the practice of industrial catalytic processes. Catalyst regeneration procedures for fixed-bed reforming units can vary widely. While all regeneration procedures share common elements, it is very common for the procedures to have evolved over years as unit configurations and throughputs have changed. Sub-optimal regeneration procedures can have a number of negative impacts on subsequent operation. In this study two samples of catalytic reforming Pt/Al2O3 catalysts were obtained from operating fixed bed semi regenerative reactors which has run for 10,000 and 14000 hours. These samples which have undergone deactivation in the course of the operations were regenerated under varying conditions of temperature, pressure and chlorination to establish the appropriate regeneration conditions. The progress and extent of regeneration were monitored using FTIR, SEM, XRD, GC-MS and XRF. The carbon content and effectiveness of the regenerated catalysts were determined and the values were compared with that of fresh catalysts. The regenerated catalysts showed 98 – 99.5% of the catalyst activity under the conditions of temperature and pressure of 500°C and 15psi respectively. The established conditions are to guide economic operations of such units which to realize high quality reformates and long life of the catalysts.},
year = {2017}
}
TY - JOUR T1 - Establishing the Appropriate Conditions of Regeneration of Cataytic Reforming Pt/AL2O3 Catalyst AU - Paul Chidi Okonkwo AU - Benjamin Aderemi AU - Taiwo Olamide Olori Y1 - 2017/11/02 PY - 2017 N1 - https://doi.org/10.11648/j.ajche.20170505.12 DO - 10.11648/j.ajche.20170505.12 T2 - American Journal of Chemical Engineering JF - American Journal of Chemical Engineering JO - American Journal of Chemical Engineering SP - 98 EP - 110 PB - Science Publishing Group SN - 2330-8613 UR - https://doi.org/10.11648/j.ajche.20170505.12 AB - Catalyst deactivation, the loss over time of catalytic activity and selectivity is a problem of great and continuing concern in the practice of industrial catalytic processes. Catalyst regeneration procedures for fixed-bed reforming units can vary widely. While all regeneration procedures share common elements, it is very common for the procedures to have evolved over years as unit configurations and throughputs have changed. Sub-optimal regeneration procedures can have a number of negative impacts on subsequent operation. In this study two samples of catalytic reforming Pt/Al2O3 catalysts were obtained from operating fixed bed semi regenerative reactors which has run for 10,000 and 14000 hours. These samples which have undergone deactivation in the course of the operations were regenerated under varying conditions of temperature, pressure and chlorination to establish the appropriate regeneration conditions. The progress and extent of regeneration were monitored using FTIR, SEM, XRD, GC-MS and XRF. The carbon content and effectiveness of the regenerated catalysts were determined and the values were compared with that of fresh catalysts. The regenerated catalysts showed 98 – 99.5% of the catalyst activity under the conditions of temperature and pressure of 500°C and 15psi respectively. The established conditions are to guide economic operations of such units which to realize high quality reformates and long life of the catalysts. VL - 5 IS - 5 ER -
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