Thermogravimetric investigation on the degradation properties and combustion performance of bio-oils

•The degradation and combustion properties of bio-oils were quantitatively evaluated.•The formation and effect of carbonaceous solid during bio-oil combustion were studied.•A higher amount of carbonaceous solid was produced from aged bio-oil.•Bio-oil from torrefied wood has comparable thermal profil...

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Bibliographic Details
Published in:Bioresource technology Vol. 152; pp. 267 - 274
Main Authors: Ren, Xueyong, Meng, Jiajia, Moore, Andrew M., Chang, Jianmin, Gou, Jinsheng, Park, Sunkyu
Format: Journal Article
Language:English
Published: Kidlington Elsevier Ltd 01.01.2014
Elsevier
Subjects:
Bio-oil
biofuels
Biofuels - analysis
Biological and medical sciences
boilers
Carbon - analysis
Chemical Phenomena
Combustion
Combustion performance
Degradation
Differential Thermal Analysis
Fuel oils
Fundamental and applied biological sciences. Psychology
Kinetics
Mathematical models
Oils - chemistry
Oxidation-Reduction
Pyrolysis
Raw
Residues
Temperature
temperature profiles
Thermogravimetric analysis
thermogravimetry
Thermogravimetry - methods
Volatilization
Wood
Wood - chemistry
Degradation
Thermogravimetric analysis
Fuel oils
Combustion performance
Bio-oil
Oil
Thermogravimetry
Combustion
Biomass
Fuel oil
ISSN:0960-8524, 1873-2976, 1873-2976
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Summary:•The degradation and combustion properties of bio-oils were quantitatively evaluated.•The formation and effect of carbonaceous solid during bio-oil combustion were studied.•A higher amount of carbonaceous solid was produced from aged bio-oil.•Bio-oil from torrefied wood has comparable thermal profiles with raw bio-oil.•Bio-oils have comparable combustion index with fuel oils used in boilers. The degradation properties and combustion performance of raw bio-oil, aged bio-oil, and bio-oil from torrefied wood were investigated through thermogravimetric analysis. A three-stage process was observed for the degradation of bio-oils, including devolatilization of the aqueous fraction and light compounds, transition of the heavy faction to solid, and combustion of carbonaceous residues. Pyrolysis kinetics parameters were calculated via the reaction order model and 3D-diffusion model, and combustion indexes were used to qualitatively evaluate the thermal profiles of tested bio-oils for comparison with commercial oils such as fuel oils. It was found that aged bio-oil was more thermally instable and produced more combustion-detrimental carbonaceous solid. Raw bio-oil and bio-oil from torrefied wood had comparable combustion performance to fuel oils. It was considered that bio-oil has a potential to be mixed with or totally replace the fuel oils in boilers.
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ISSN:0960-8524
1873-2976
1873-2976
DOI:10.1016/j.biortech.2013.11.028