Pyrolytic characteristics of Jatropha seedshell cake in thermobalance and fluidized bed reactors

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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 degrees C with the mean particle size of 1.7 mm and gas flow rate higher than 3U(mf), 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 degrees C in distribution of components' boiling point due to high yields of fatty acid and glycerides.
Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
Issue Date
2013-05
Language
English
Article Type
Article
Keywords

FLASH PYROLYSIS; BIO-OIL; PRODUCTS; KINETICS; BAGASSE; CORNCOB; WASTES; SHELL; PALM

Citation

KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.30, no.5, pp.1162 - 1170

ISSN
0256-1115
DOI
10.1007/s11814-013-0015-x
URI
http://hdl.handle.net/10203/174743
Appears in Collection
CBE-Journal Papers(저널논문)
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