Title of article :
Effect of Small Molecule Compounds on the Pyrolysis Behavior of Coal
Author/Authors :
Wang ، Yingchun Shanxi Key Laboratory of High Value Utilization of Coal Gangue - College of Chemical Engineering and Technology - Taiyuan University of Science and Technology , Niu ، Ziyan Shanxi Key Laboratory of High Value Utilization of Coal Gangue - College of Chemical Engineering and Technology - Taiyuan University of Science and Technology , Liu ، Xianjun Shanxi Key Laboratory of High Value Utilization of Coal Gangue - College of Chemical Engineering and Technology - Taiyuan University of Science and Technology , Liu ، Zhenmin Shanxi Key Laboratory of High Value Utilization of Coal Gangue - College of Chemical Engineering and Technology - Taiyuan University of Science and Technology , Liang ، Jiaxiong Shanxi Key Laboratory of High Value Utilization of Coal Gangue - College of Chemical Engineering and Technology - Taiyuan University of Science and Technology , Gao ، Chuangji Shanxi Key Laboratory of High Value Utilization of Coal Gangue - College of Chemical Engineering and Technology - Taiyuan University of Science and Technology , Li ، Ruoxuan Shanxi Key Laboratory of High Value Utilization of Coal Gangue - College of Chemical Engineering and Technology - Taiyuan University of Science and Technology , Wang ، Xiaoxiao Shanxi Key Laboratory of High Value Utilization of Coal Gangue - College of Chemical Engineering and Technology - Taiyuan University of Science and Technology , Guo ، Fang College of Chemistry and Chemical Engineering - Jin Zhong University , Yu ، Yue Lin Yi Institutes of Industrial Technology
Abstract :
The effect of small molecule compounds on the pyrolysis behavior of coal is discussed by comparing TG and DTG curves of Yanzhou coal and its tetrahydrofuran (THF) extracted residual in this paper. Based on the thermal gravimetric analysis of Yanzhou coal and its THF-extracted residual, it is revealed that part of the chemical bonds are weakened after the small molecular compound is extracted from coal, which promotes the pyrolysis of its THF-extracted residual. The optimum reaction temperature is 490 °C for the high-temperature fast liquefaction of the THF-extracted residual. The maximum temperature of weight-loss rate for Yanzhou Coal and its THF extracted residual is 439 °C and 437 °C, respectively. The liquefaction reaction temperature of them is 389-490 °C and 380-525 °C, respectively. The results we studied could give some help to the further perfection of the theory of the pyrolysis behavior of coal, and its application. And it is further helpful to study the mechanism of the theory of the pyrolysis behavior of coal.
Keywords :
Coal , Small molecule compounds , Coal pyrolysis , TG , DTG
Journal title :
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
Journal title :
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
