JIANG Guodong, WEI Liping, TENG Haipeng, et al. A kinetic model based on TGA data for pyrolysis of Zhundong coal[J]. CIESC Journal, 2017, (4): 1415-1422.
JIANG Guodong, WEI Liping, TENG Haipeng, et al. A kinetic model based on TGA data for pyrolysis of Zhundong coal[J]. CIESC Journal, 2017, (4): 1415-1422.DOI: 10.11949/j.issn.0438-1157.20161335.
In order to predict the yield of volatiles and reaction performance during pyrolysis of Zhundong coal
which is of significant importance for its thermal processing
a kinetic model is necessary. The devolatilization of Zhundong coal is characterized by thermo-gravimetric analysis (TGA) at different heating rates. Three types of iso-conversion kinetic models
i.e.
Friedman
Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose(KAS)
are employed to fit TGA data for pyrolysis of Zhundong coal. The pre-exponential factors and activation energies obtained from different kinetic models are analyzed. The results show that there exists unimodal distribution for the activation energies and the FWO model is better for description of pyrolysis process of Zhundong coal.