TY - JOUR
T1 - A thermal behavior study of Chinese coals with high hydrogen content
AU - Wang, Shaoqing
AU - Tang, Yuegang
AU - Schobert, Harold H.
AU - Mitchell, Gareth D.
AU - Liao, Fengrong
AU - Liu, Zengzhi
N1 - Funding Information:
All experiments were performed at the EMS Energy Institute of The Pennsylvania State University. The authors gratefully acknowledge Ron Wasco for his technical assistance and thank the National Natural Science Foundation of China for financial support of this project (Research Project No. 40772101 ).
PY - 2010/1/7
Y1 - 2010/1/7
N2 - A variety of Chinese coals, rich in barkinite, were studied by thermogravimetric analysis in a nitrogen atmosphere at three heating rates (10, 15 and 25 °C min- 1), as well as fluidity measurement by Gieseler plastometry at a rate of 3 °C min- 1 from 330 °C to 500 °C. Barkinite-rich samples contained higher hydrogen and volatile matter contents and possessed higher H/C atomic ratios than other coals of similar rank. A good correlation between hydrogen and barkinite content was observed. The thermal profiles showed a monotonic weight loss and the reactions were intense. The TGA curves were not greatly affected by the heating rate applied, especially for those coal samples rich in barkinite. In addition, two good linear relationships were found between the H/C atomic ratio and the important parameters derived from DTG curves: total mass loss and the maximum rate of mass loss. The correlations of characteristic parameters derived from thermogravimetric analysis and thermoplastic analysis were also investigated.
AB - A variety of Chinese coals, rich in barkinite, were studied by thermogravimetric analysis in a nitrogen atmosphere at three heating rates (10, 15 and 25 °C min- 1), as well as fluidity measurement by Gieseler plastometry at a rate of 3 °C min- 1 from 330 °C to 500 °C. Barkinite-rich samples contained higher hydrogen and volatile matter contents and possessed higher H/C atomic ratios than other coals of similar rank. A good correlation between hydrogen and barkinite content was observed. The thermal profiles showed a monotonic weight loss and the reactions were intense. The TGA curves were not greatly affected by the heating rate applied, especially for those coal samples rich in barkinite. In addition, two good linear relationships were found between the H/C atomic ratio and the important parameters derived from DTG curves: total mass loss and the maximum rate of mass loss. The correlations of characteristic parameters derived from thermogravimetric analysis and thermoplastic analysis were also investigated.
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U2 - 10.1016/j.coal.2009.10.012
DO - 10.1016/j.coal.2009.10.012
M3 - Article
AN - SCOPUS:71549158178
SN - 0166-5162
VL - 81
SP - 37
EP - 44
JO - International Journal of Coal Geology
JF - International Journal of Coal Geology
IS - 1
ER -