The effect of temperature and pressure on n-heptane thermal cracking in regenerative cooling channel
文献类型：期刊论文
| 作者 | Wu, Yong1,2,4; Wang, Xiaohan2,3 ; Song, Qianshi2,4; Zhao, Luoguang2,4; Su, Hang2,4; Li, Haohan2,4; Zeng, Xiaojun2; Zhao, Daiqing2,3; Xu, Jianzhong1
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| 刊名 | COMBUSTION AND FLAME
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| 出版日期 | 2018-08-01 |
| 卷号 | 194页码:233-244 |
| ISSN号 | 0010-2180 |
| 关键词 | N-heptane pyrolysis Mechanism model Temperature Pressure |
| DOI | 10.1016/j.combustflame.2018.04.036 |
| 通讯作者 | Wang, Xiaohan(wangxh@ms.giec.ac.cn) ; Xu, Jianzhong(jzxu@iet.cn) |
| 英文摘要 | A thermal cracking experimental equipment of hydrocarbon fuels was built to study n-heptane pyrolysis and the effect of reaction conditions on this reaction process. The main species were measured and the change rules were analyzed on the range of temperature 873-1073 K and pressure 0.1-3.5 MPa. The total content of alkenes products was more than alkanes on this pyrolysis process. Compared to alkenes with same number carbons, the alkanes were more easy to decompose with temperature but more conducive to formation with pressure increasing. The content of ethylene is usually the most on above reaction conditions, but its descent is also the fastest with pressure increasing. A mechanism model of n-heptane pyrolysis (44 species and 166 reactions) was constructed and validated by experiments on different conditions. Compared with n-heptane oxidation detailed model of Version 3.1 from Lawrence Livermore National Laboratory (LLNL), the pyrolysis model present a better accordant with experiment results on a range of temperature and pressure. The kinetic reaction of n-heptane pyrolysis was analyzed with present pyrolysis model, and the pyrolysis reaction pathway for the main products was obtained. The formation of alkenes are mainly through C-C bond dissociation reaction, especiallyp-C dissociation, and small alkanes are formed mainly by radical metathetical or synthesis reaction, the former are endothermic reactions, but the latter are mostly exothermal reactions. The properties of some main reactions have a critical role for the change of product content with temperature and pressure, which is the main reason for the variety of products selectivity under different conditions, Pressure increased the pyrolysis residence time and mass density but it does not significantly affect the reaction energy, so its contribution to conversion rate of fuels thermal cracking is limited, although it changes the reaction pathway greatly. However, the temperature can increase obviously the reaction activation energy, even though the residence time and concentration is decreased, the conversion rate of n-heptane pyrolysis still increased. (C) 2018 The Combustion Institute. Published by Elsevier Inc. All rights reserved. |
| WOS关键词 | SUPERCRITICAL CONDITIONS ; HYDROCARBON FUELS ; PYROLYSIS ; KINETICS ; OXIDATION ; DECOMPOSITION ; COMBUSTION ; MECHANISMS ; GASOLINE ; COKING |
| 资助项目 | Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA 21060102] ; Training Program of the Major Research Plan of the National Natural Science Foundation of China[91441127] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE INC |
| WOS记录号 | WOS:000440118400019 |
| 资助机构 | Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Training Program of the Major Research Plan of the National Natural Science Foundation of China |
| 源URL | [http://ir.giec.ac.cn/handle/344007/23682]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Wang, Xiaohan; Xu, Jianzhong |
| 作者单位 | 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 10090, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 3.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Yong,Wang, Xiaohan,Song, Qianshi,et al. The effect of temperature and pressure on n-heptane thermal cracking in regenerative cooling channel[J]. COMBUSTION AND FLAME,2018,194:233-244. |
| APA | Wu, Yong.,Wang, Xiaohan.,Song, Qianshi.,Zhao, Luoguang.,Su, Hang.,...&Xu, Jianzhong.(2018).The effect of temperature and pressure on n-heptane thermal cracking in regenerative cooling channel.COMBUSTION AND FLAME,194,233-244. |
| MLA | Wu, Yong,et al."The effect of temperature and pressure on n-heptane thermal cracking in regenerative cooling channel".COMBUSTION AND FLAME 194(2018):233-244. |
入库方式： OAI收割
来源：广州能源研究所
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