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Effect of Small Molecule Compounds on the Pyrolysis Behavior of Coal

Publish place: Iranian Journal of Chemistry and Chemical Engineering، Vol: 41، Issue: 5
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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https://civilica.com/doc/2282616

شناسه ملی سند علمی:

JR_IJCCE-41-5_019

تاریخ نمایه سازی: 17 خرداد 1404

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 ۴۹۰ oC 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 ۴۳۹ oC and ۴۳۷ oC, respectively. The liquefaction reaction temperature of them is ۳۸۹-۴۹۰ oC and ۳۸۰-۵۲۵ oC, 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

Authors

Yingchun Wang

College of Chemical Engineering and Technology, Shanxi Key Laboratory of High Value Utilization of Coal Gangue, Taiyuan University of Science and Technology, Taiyuan ۰۳۰۰۲۴, P.R. CHINA

Ziyan Niu

College of Chemical Engineering and Technology, Shanxi Key Laboratory of High Value Utilization of Coal Gangue, Taiyuan University of Science and Technology, Taiyuan ۰۳۰۰۲۴, P.R. CHINA

Xianjun Liu

College of Chemical Engineering and Technology, Shanxi Key Laboratory of High Value Utilization of Coal Gangue, Taiyuan University of Science and Technology, Taiyuan ۰۳۰۰۲۴, P.R. CHINA

Zhenmin Liu

College of Chemical Engineering and Technology, Shanxi Key Laboratory of High Value Utilization of Coal Gangue, Taiyuan University of Science and Technology, Taiyuan ۰۳۰۰۲۴, P.R. CHINA

Jiaxiong Liang

College of Chemical Engineering and Technology, Shanxi Key Laboratory of High Value Utilization of Coal Gangue, Taiyuan University of Science and Technology, Taiyuan ۰۳۰۰۲۴, P.R. CHINA

Chuangji Gao

College of Chemical Engineering and Technology, Shanxi Key Laboratory of High Value Utilization of Coal Gangue, Taiyuan University of Science and Technology, Taiyuan ۰۳۰۰۲۴, P.R. CHINA

Ruoxuan Li

College of Chemical Engineering and Technology, Shanxi Key Laboratory of High Value Utilization of Coal Gangue, Taiyuan University of Science and Technology, Taiyuan ۰۳۰۰۲۴, P.R. CHINA

Xiaoxiao Wang

College of Chemical Engineering and Technology, Shanxi Key Laboratory of High Value Utilization of Coal Gangue, Taiyuan University of Science and Technology, Taiyuan ۰۳۰۰۲۴, P.R. CHINA

Fang Guo

Jin Zhong University, College of Chemistry and Chemical Engineering, Yuci ۰۳۰۶۱۹, P.R. CHINA

Yue Yu

Lin Yi Institutes of Industrial Technology, Linyi ۲۷۶۰۰۰, P.R. CHINA

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