YANG Hong1.2.3，MA Zhi-hao1，ZHANG Yu-gui2.3，BI Wen-yan1，JIANG Lin-hua2
(1. School of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, China;
2. State Key Laboratory Cultivation Base for Gas Geology and Gas Control (Henan Polytechnic University), Jiaozuo 454000, China;
3.Collaborative Innovation Center of Coaled Methane and Shale Gas for Central Plains Economic Region，Henan Province，Jiaozuo，Henan 454000，China)
Abstract：The pyrolysis behavior of weathered coal (WC) and its residues extracted with humic acid were investigated using a quadrupole thermogravimetry mass spectrometer (TG-MS). The experimental results of non-hydrocarbons (H2, H2O, CO and CO2), low carbon hydrocarbons (CH4, C3H6 and C3H7), and aromatic hydrocarbons (C6H6) were studied. The pyrolysis process and hydrocarbons generation kinetics were analyzed by the Coast-Redfern integration method and its kinetic parameters were obtained furtherly. The results indicate that the weight loss (38.9%) resulting from the pyrolysis process of weathered coal is higher than the residues (36.6%) . However, in addition to CO and CO2, the flux of non-hydrocarbon, hydrocarbon and aromatic products in residues are slightly or significantly higher than the various components emitted from weathered coal. The kinetic parameters likely explain these results.
Key words：thermogravimetry-mass spectrometry; pyrolysis; hydrocarbons; kinetics
Email: yhong@hpu.edu.cn
ACTA MINERALOGICA SINICA Vol. 35, No. 2, 2015, Page 191-196
