Pyrolysis characteristics and kinetics of low rank coals by distributed activation energy model
文献类型：期刊论文
| 作者 | Song, Huijuan1,2 ; Liu, Guangrui1; Wu, Jinhu1
|
| 刊名 | ENERGY CONVERSION AND MANAGEMENT
 |
| 出版日期 | 2016-10-15 |
| 卷号 | 126期号:126页码:1037-1046 |
| 关键词 | Low rank coal Pyrolysis kinetics DAEM NMR |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Thermodynamics ; Energy & Fuels ; Mechanics ; Physics, Nuclear |
| 研究领域[WOS] | Thermodynamics ; Energy & Fuels ; Mechanics ; Physics |
| 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记录号 | WOS:000385326400091 |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/8547]  |
| 专题 | 青岛生物能源与过程研究所_热化学转化事业部 |
| 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. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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