Abstract
In this study, performance of hydrogen-permselective membrane fixed bed reactors to produce isobutene is studied at steady state condition. The proposed reactors have been modeled heterogeneously based on the mass and energy conservation laws. The considered reaction networks in the model are isobutene dehydrogenation as the main reaction, and hydrogenolysis, propane dehydrogenation as well as coke formation as side reactions that all occur on the catalyst surface. The coke deposition on the catalyst surface results an activity profile along reactors. The reactions occur in the tube side and the hydrogen permeates from the reaction zone to the sweep gas stream. Decreasing the hydrogen concentration over the catalyst pellets improves isobutane conversion and isobutene selectivity. To prove the performance of the proposed configuration, simulation results for membrane process are compared with the conventional process at the same operating condition. In this configuration, the isobutene production rate is enhanced about 10.81% compared to the conventional process at the same catalyst loading.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Craig, R.G. and Spence, D.C., Handbook of Petroleum Refining Processes, New York: McGraw-Hill, 1986.
Bhasin, M.M., Cain, J.H., Vora, B.V., Imai, T., and Pujado, R.R., Dehydrogenation and oxydehydrogenation of paraffins to olefins, Appl. Catal., A, 2001, vol. 221, pp. 397–419.
Cortright, R.D., Levin, P.E., and Dumesic, J.A., Kinetic studies of isobutane dehydrogenation and isobutene hydrogenation over Pt/Sn-based catalysts, Ind. Eng. Chem. Res., 1998, vol. 37, pp. 1717–1723.
Gucuyener, C., van den Bergh, J., Gascon, J., and Kapteijn, F., Isobutane dehydrogenation in a DD3R zeolite membrane reactor, Chem. Eng. J., 2011, vol. 1, pp. 368–377.
Bakhshi, A., Ehsani, M.R., and Moheb, A., Mathematical modeling of a fixed bed reactor for dehydrogenation of isobutane, Proc. 13th Asia Pacific Confed. Chem. Eng. Congr., Taipei, China, 2010.
Sahebdelfar, S., Bijani, P.M., Saeedizad, M., Zangeneh, F.T., and Ganji, K., Modeling of adiabatic moving-bed reactor for dehydrogenation of isobutane to isobutene, Appl. Catal., A, 2011, vol. 395, pp. 107–113.
Vernikovskaya, N.V., Savin, I.G., Kashkin, V.N., Pakhomov, N.A., Ermakova, A., Molchanov, V.V., Nemykina, E.I., and Parakhin, O.A., Dehydrogenation of propane-isobutane mixture in a fluidized bed reactor over Cr2O3/Al2O3 catalyst: experimental studies and mathematical modeling, Chem. Eng. J., 2011, vol. 176–177, pp. 158–164.
Zangeneh, F.T., Sahebdelfar, S., and Bahmani, M., Propane dehydrogenation over a commercial PtSn/Al2O3 catalyst for isobutane dehydrogenation: optimization of reaction conditions, Chin. J. Chem. Eng., 2013, vol. 21, pp. 730–735.
Gandia, L.M., Arzamandi, G., and Dieguez, P.M., Advances in Hydrogen Separation and Purification with Membrane Technology, Amsterdam: Elsevier, 2013.
Casanave, D., Ciavarella, P., Fiaty, K., and Dalmon, J.A., Zeolite membrane reactor for isobutane dehydrogenation: experimental results and theoretical modeling, Chem. Eng. Sci., 1999, vol. 54, pp. 2807–2815.
Ciavarella, P., Casanave, D., Moueddeb, H., Miachon, S., Fiaty, K., and Dalmon, J.A., Isobutane dehydrogenation in a membrane reactor. Influence of the operating conditions on the performance, Catal. Today, 2001, vol. 67, pp. 177–184.
Liang, W. and Hughes, R., The catalytic dehydrogenation of isobutane to isobutene in a palladium/silver composite membrane reactor, Catal. Today, 2005, vol. 104, pp. 238–243.
Bijani, P. and Sahebdelfar, S., Modeling of a radial-flow moving-bed reactor for dehydrogenation of isobutene, Kinet. Catal., 2008, vol. 49, pp. 599–605.
Abdi, A. and Kiamanesh, V., Modeling and simulation of the catalytic reactor for propane dehydrogenation in MTBE plant, Proc. Iranian Petrochemical Conf., Tehran, 2008.
Suwanwarangkul, R., Croiset, E., Fowler, M.W., Douglas, P.L., Entchev, E., and Douglas, M.A., Performance comparison of Fick’s, dusty-gas and Stefan-Maxwell models to predict the concentration over potential of a SOFC anode, J. Power Sources, 2003, vol. 122, pp. 9–18.
Tallmadge, J.A., Packed bed pressure drop-an extension to higher Reynolds numbers, AIChE J., 1970, vol. 16, pp. 1092–1093.
Hara, S., Xu, W.C., Sakaki, K., and Itoh, N., Kinetics and hydrogen removal effect for methanol decomposition, Ind. Eng. Chem. Res., 1999, vol. 38, pp. 488–492.
Chapman, S. and Cowling, T.J., The Mathematical Theory of Non-uniform Gases, Cambridge: Cambridge Univ. Press, 1991.
Poling, B.E., Prausnitz, J.M., and O’Connell, J.P., The Properties of Gases and Liquids, New York: McGraw-Hill, 2001.
Cussler, E.L., Diffusion Mass Transfer in Fluid Systems, Cambridge: Cambridge Univ. Press, 2009, 3rd ed.
Hirschfelder, J.O., Curtis, C.F., and Bird, R.B., Molecular Theory of Gases and Liquids, New York: Wiley, 1966.
Wilke, C.R., Diffusion properties of multi-component gases, Chem. Eng. Prog., 1950, vol. 46, pp. 95–104.
Holman, J.P., Heat Transfer, New York: McGraw-Hill, 2009, 10th ed.
Operating Data Sheets of MTBE Plant, Bandar Imam Khomeini Petrochemical Complex, Iran.
Author information
Authors and Affiliations
Corresponding author
Additional information
The article is published in the original.
Rights and permissions
About this article
Cite this article
Farsi, M., Jahanmiri, A. & Rahimpour, M.R. Simultaneous isobutane dehydrogenation and hydrogen production in a hydrogen-permselective membrane fixed bed reactor. Theor Found Chem Eng 48, 799–805 (2014). https://doi.org/10.1134/S0040579514060049
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0040579514060049