Pyrolysis characteristics and kinetics of low rank coals by distributed activation energy model

doi:10.1016/j.enconman.2016.08.082

QIBEBT-IR > 热化学转化研究组

	Pyrolysis characteristics and kinetics of low rank coals by distributed activation energy model
	Song, Huijuan1,2 ; Liu, Guangrui1 ; Wu, Jinhu1
	2016-10-15
发表期刊	ENERGY CONVERSION AND MANAGEMENT
卷号	126 期号:126 页码:1037-1046
摘要	The work was conducted to investigate pyrolysis characteristics and kinetics of low rank coals relating with coal structure by thermogravimetric analysis (TGA), the distributed activation energy model (DAEM) and solid-state C-13 Nuclear Magnetic Resonance (NMR). Four low rank coals selected from different mines in China were studied in the paper. TGA was carried out with a non-isothermal temperature program in N-2 at the heating rate of 5, 10, 20 and 30 degrees C/min to estimate pyrolysis processes of coal samples. The results showed that corresponding characteristic temperatures and the maximum mass loss rates increased as heating rate increased. Pyrolysis kinetics parameters were investigated by the DAEM using Miura integral method. The DAEM was accurate verified by the good fit between the experimental and calculated curves of conversion degree x at the selected heating rates and relatively higher heating rates. The average activation energy was 331 kJ/mol (coal NM), 298 kJ/mol (coal NX), 302 kJ/mol (coal HLJ) and 196 kJ/mol (coal SD), respectively. The curve-fitting analysis of C-13 NMR spectra was performed to characterize chemical structures of low rank coals. The results showed that various types of carbon functional groups with different relative contents existed in coal structure. The work indicated that pyrolysis characteristics and kinetics of low rank coals were closely associated with their chemical structures. (C) 2016 Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	Low Rank Coal Pyrolysis Kinetics Daem Nmr
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.enconman.2016.08.082
关键词[WOS]	LATE PERMIAN COALS ; SOLID-STATE NMR ; C-13 NMR ; SOUTHERN CHINA ; HEATING RATES ; LIGNITE ; DEVOLATILIZATION ; FTIR ; GASIFICATION ; EVOLUTION
收录类别	SCI
语种	英语
WOS研究方向	Thermodynamics ; Energy & Fuels ; Mechanics ; Physics
项目资助者	National Key RD Program(2016YFB0600302-04) ; Applied Basic Research Programs of Qingdao(14-2-4-53-jch) ; Natural Science Foundation of Shandong(ZR2014EEQ013 ; Natural Science Foundation of Shanxi Province(ZR2014EEQ013 ; Qingdao Institute of Bioenergy and Bioprocess Technology Director Innovation Foundation for Young Scientists(CASKLB201502 ; MD 2014-03) ; MD 2014-03) ; GJS-2015-08)
WOS类目	Thermodynamics ; Energy & Fuels ; Mechanics ; Physics, Nuclear
WOS记录号	WOS:000385326400091
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/8547
专题	热化学转化研究组
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, 189 Songling Rd, Qingdao 266101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Song, Huijuan,Liu, Guangrui,Wu, Jinhu. Pyrolysis characteristics and kinetics of low rank coals by distributed activation energy model[J]. ENERGY CONVERSION AND MANAGEMENT,2016,126(126):1037-1046.
APA	Song, Huijuan,Liu, Guangrui,&Wu, Jinhu.(2016).Pyrolysis characteristics and kinetics of low rank coals by distributed activation energy model.ENERGY CONVERSION AND MANAGEMENT,126(126),1037-1046.
MLA	Song, Huijuan,et al."Pyrolysis characteristics and kinetics of low rank coals by distributed activation energy model".ENERGY CONVERSION AND MANAGEMENT 126.126(2016):1037-1046.