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Received January 9, 2013
Accepted February 3, 2013
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Pyrolytic characteristics of Jatropha seedshell cake in thermobalance and fluidized bed reactors
Catalyst & Process R&D Center, SK Innovation, 140-1, Wonchon-dong, Yuseong-gu, Daejeon 305-712, Korea 1Department of Chemical and Biomolecular Engineering, Energy and Environmental Research Center, Korea Advanced Institute of Science and Technology (KAIST), 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea
kimsd45@kaist.ac.kr
Korean Journal of Chemical Engineering, May 2013, 30(5), 1162-1170(9), 10.1007/s11814-013-0015-x
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Abstract
Pyrolytic kinetic parameters of Jatropha seedshell cake (JSC) were determined based on reaction mechanism approach under isothermal condition in a thermobalance reactor. Avrami-Erofeev reaction model represents the pyrolysis conversion of JSC waste well with activation energy of 36.4 kJ mol^(-1) and frequency factor of 9.18 s^(-1). The effects of reaction temperature, gas flow rate and feedstock particle size on the products distribution have been determined in a bubbling fluidized bed reactor. Pyrolytic bio-oil yield increases up to 42 wt% at 500 ℃ with the mean particle size of 1.7 mm and gas flow rate higher than 3Umf, where the maximum heating value of bio-oil was obtained. The pyrolytic bio-oil is characterized by more oxygen, lower HHVs, less sulfur and more nitrogen than petroleum fuel oils. The pyrolytic oil showed plateaus around 360 ℃ in distribution of components’ boiling point due to high yields_x000D_
of fatty acid and glycerides.
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References
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Caglar A, Demirbas A, Energy Conv. Manag., 43(4), 489 (2002)
Encinar JM, Gonzalez JF, Martinez G, Gonzalez JM, Fuel Process. Technol., 89(12), 1448 (2008)
Sricharoenchaikul V, Atong D, J. Anal. Appl. Pyrol., 85, 155 (2009)
Vyazovkin S, Wight CA, Thermochim. Acta., 340-1, 53 (1999)
Kim YC, Kim S, Chung SH, J. Ind. Eng. Chem., 11(6), 857 (2005)
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Zhang HY, Xiao R, Huang H, Xiao G, Bioresour. Technol., 100(3), 1428 (2009)
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Xu R, Ferrante L, Briens C, Berruti F, J. Anal. Appl. Pyrol., 86, 58 (2009)
Di Blasi C, Signorelli G, Di Russo C, Rea G, Ind. Eng. Chem. Res., 38(6), 2216 (1999)
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Sonobe T, Worasuwannarak N, Pipatmanomai S, Fuel Process. Technol., 89(12), 1371 (2008)
Piskorz J, Majerski P, Radlein D, Scott DS, Bridgwater AV, J. Anal. Appl. Pyrol., 46, 15 (1998)
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Mason DM, Gandhi KN, Fuel Process. Technol., 7, 11 (1983)
Park HJ, Jeon JK, Jung KY, Ko YS, Sohn JM, Park YK, Korean Chem. Eng. Res., 45(4), 340 (2007)
