INVESTIGATING CHEMICAL PROPERTIES AND COMBUSTION CHARACTERISTICS OF TORREFIED MASSON PINE
Keywords:Masson pine, Combustion characteristic, TGA, FTIR, XRD
To investigate chemical properties and combustion characteristics, masson pine was torrefied using GSL 1600X tube furnance in the argon atmosphere. The properties of torrefied masson pine were respectively determined through thermogravimetry (TGA), fourier transform infrared spectrometer (FTIR) and X-ray diffraction (XRD). Results showed that thermal decomposition of hemicelluloses, cellulose and lignin occurred during torrefaction process. Crystalline region of cellulose was destroyed when temperature was up to 250℃. The effect of torrefaction temperature was more significant than that of residence time. Torrefaction improved combustion characteristics of masson pine. The optimum process was 300℃ of torrefaction temperature and 2.0h of residence time. Combustion process of torrefied masson pine included drying, oxidative pyrolysis and char combustion. Torrefied masson pine had a lower H/C and O/C ratios, peak temperature of oxidative pyrolysis and char combustion and burnout temperature. It had a higher energy density, ignition temperature and activation energy. This data will be significant to understand the torrefied masson pine for energy product to directly combustion.
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