Research on combustion characteristics of bio-oil from sewage sludge

Rui LI, Baosheng JIN, Xiangru JIA, Zhaoping ZHONG, Gang XIAO, Xufeng FU

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PDF(173 KB)
Front. Chem. Sci. Eng. ›› 2009, Vol. 3 ›› Issue (2) : 161-166. DOI: 10.1007/s11705-009-0057-0
RESEARCH ARTICLE

Research on combustion characteristics of bio-oil from sewage sludge

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Abstract

Combustion characteristics of bio-oil from sewage sludge were investigated using thermogravimetry (TG) and Fourier Transform Infrared Spectroscopy (FT-IR) techniques. The combustion process could be divided into two weight loss stages. Light compounds volatilized and were oxidized in the first stage and the heterogeneous combustion between oxygen and heavy compounds happened in the second stage, which were confirmed by FT-IR technique. Most weight loss occurred in the first stage. The effect of heating rate was also studied and higher heating rates were found to facilitate the combustion process. The kinetic parameters of the two stages were calculated and the change of activation energy indicated higher heating rates benefited combustion.

Keywords

bio-oil from sewage sludge / fast pyrolysis / combustion characteristics / TG-FT-IR / kinetic

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Rui LI, Baosheng JIN, Xiangru JIA, Zhaoping ZHONG, Gang XIAO, Xufeng FU. Research on combustion characteristics of bio-oil from sewage sludge. Front Chem Eng Chin, 2009, 3(2): 161‒166 https://doi.org/10.1007/s11705-009-0057-0

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Acknowledgements

The authors gratefully acknowledge the support by National Basic Research Program of China (2007CB210208), the National Natural Science Foundation of China (Grant No. 50776019), the Program for New Century Excellent Talents in Universities of China (NCET-05-0496).
Nomenclature
Apre-exponential factor, s-1
Eactivation energy, kJ·mol-1
nreaction order
Rthe linearity of fitting straight line
Scombustibility characteristic index, %2·°C-3·min-2
TTemperature, °C
Tiignition temperature, °C
Tbburnout temperature, °C
Αconversion ratio, %
Βheating rate, °C·min-1
dα/dtinstantaneous reaction rate, %·min-1
(dα/dt)maxthe maximum instantaneous reaction rate, %·min-1
(dα/dt)meanmean instantaneous reaction rate, %·min-1

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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