Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 107, Issue 1, Pages 293-298Publisher
SPRINGER
DOI: 10.1007/s10973-010-1281-z
Keywords
Combustion; Coal-wood blends; Thermogravimetric analysis; Non-isothermal kinetics
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The combustion of coal and coal/fir (Abies bornmulleriana) wood blends at the proper ratio (20, 40, 50 wt%) was investigated with thermogravimetric analysis (TG). The influence of biomass blends on thermal and kinetic behavior of coal was studied under non-isothermal conditions. The activation energy of the samples was evaluated with the Ozawa-Flynn-Wall model which compares the combustion of these biowastes with coal under non-isothermal conditions. Our research found that blending influences activation energy of coal; moreover, activation energy related to 50 wt% blend was more similar to pure wood combustion than to coal combustion. Therefore, the activation energy profile shifted from 80.6 to 169.3 kJ/mol. The average reaction order of the samples ranged from 0.13 to 0.35.
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