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Received August 6, 2012
Accepted December 2, 2012
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Temperature oscillations in methanol partial oxidation reactor for the production of hydrogen
Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Korea
jtlee@knu.ac.kr
Korean Journal of Chemical Engineering, April 2013, 30(4), 790-795(6)
https://doi.org/10.1007/s11814-012-0210-1
https://doi.org/10.1007/s11814-012-0210-1
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Abstract
Methanol partial oxidation (POX) is a well-known reforming reaction for the production of hydrogen from methanol. Since POX is relatively fast and highly exothermic, this reforming method will be efficient for the fast startup and load-following operation. However, POX generates hot spots around catalyst and even oscillations in the reactor temperature. These should be relieved for longer operations of the reactor without catalyst degradations. For this, temperature_x000D_
oscillations in a POX reactor are investigated experimentally. Various patterns of temperature oscillations according to feed flow rates of reactants and reactor temperatures are obtained. The bifurcation phenomena from regular oscillations to chaotic oscillations are found as the methanol flow rate increases. These experimental results can be used for theoretical analyses of oscillations and for designing safe reforming reactors.
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References
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Jung YS. Highly Conductive methanol autothermal reactor, KNU Master’s Thesis (2006)
Chang FW, Lai SC, Roselin LS, J. Mol. Catal. A-Chem., 282(1-2), 129 (2008)
Udani PPC, Gunawardana PVDS, Lee HC, Kim DH, Int. J. Hydrog. Energy., 34, 7648 (2009)
Kim DH, Lee J, Stud. Surf. Sci. Catal., 159, 685 (2006)
Epstein IR, Showalter K, J. Phys. Chem., 100(31), 13132 (1996)
Imbihl R, Ertl G, Chem. Rev., 95(3), 697 (1995)
Lee MY, Dorn C, Meski GA, Morari M, Ind. Eng. Chem. Res., 38(5), 2021 (1999)
Ionescu NI, Chirca MS, Marchidan DI, React. Kinet., Mech.Catal., 38, 249 (1988)
Werner H, Herein D, Schulz G, Wild U, Schlogl R, Catal. Lett., 49(1-2), 109 (1997)
Lin YC, Fan LT, Shafie S, Hohn KL, Bertok B, Friedler F, Ind. Eng. Chem. Res., 47(8), 2523 (2008)
Raimondi F, Geissler K, Wambach J, Wokaun A, Appl. Surf. Sci., 189(1-2), 59 (2002)
Alligood KT, Sauer TD, Yorke JA, Chaos; An Introduction to Dynamical Systems, Springer, N.Y. (1996)
Elnashaie SSEH, Grace JR, Chem. Eng. Sci., 62(13), 3295 (2007)
Varigonda S, Georgiou TT, IEEE Trans. Autom. Control, 46(1), 65 (2001)
Kim J, Dynamic study for thermal oscillation in methanol partial oxidation, KNU Master’s Thesis (2010)
