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Exploration of new olefin production process: Effects of the addition of CO2 and H2O on n-heptane pyrolysis

文献类型：期刊论文

作者Li, Haowen3,6; Zhang, Jie1,6; Yang, Zixin3,6; Zhang, Wei2,6; Song, Qianshi4,6; Wang, Xiaohan4,6; Wu, Yong4,5
刊名JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
出版日期2022-10-01
卷号167页码:12
关键词n-Heptane Pyrolysis Temperature and pressure CO2 and H2O atmosphere Light olefins
ISSN号0165-2370
DOI10.1016/j.jaap.2022.105655
通讯作者Wang, Xiaohan(ucasewiner@126.com) ; Wu, Yong(loveyou@mail.ustc.edu.cn)
英文摘要In order to study the new cracking process characteristics of hydrocarbon feedstock to light olefins by direct flue gas heating, the pyrolysis experiments of n-heptane in CO2 and H2O atmosphere were performed in pretreated STS316L flow reactor (phi 10 mm x 2.5 mm x 700 mm) at a temperature range of 1073-1373 K, pressure range of 0.1-1.0 MPa. By changing the n-heptane flow and system pressure to adjust the residence time, results show that the latter is not conducive to olefin formation, but the residence time range about high olefin formation of the latter is wider than that of the former. Due to the promotion of CO and the high-temperature solubility of CO2, the types and contents of PAHs in tar under H2O&CO2 atmosphere are higher. Based on the analysis of n-heptane cracking products stream, the reactivity of H2O and CO2 gradually appears at high temperature and the reactivity of H2O is significantly higher than that of CO2, resulting in higher yields of H-2 and CO. The mainstream of the process is the cracking of n-heptane, in which H2O is the supply source of center dot OH and center dot H, and CO2 acts as a coking agent. High olefin yields can be achieved in either H2O-rich or CO2-rich atmosphere, and the ratio of the two needs to be properly regulated.
WOS关键词THERMAL-CRACKING ; DISPROPORTIONATION REACTION ; STEAM CRACKING ; HYDROCARBONS ; COKING ; TEMPERATURE ; KINETICS ; COMBUSTION ; CONVERSION ; MECHANISM
资助项目National Natural Science Foundation of China[51976219] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA 21060102] ; Guangdong Provincial Key Laboratory of New and the Renewable Energy Research and Development[E139kf0901] ; Guangdong Provincial Key Laboratory of Distributed Energy Systems[2020B1212060075]
WOS研究方向Chemistry ; Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000863278700007
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Guangdong Provincial Key Laboratory of New and the Renewable Energy Research and Development ; Guangdong Provincial Key Laboratory of Distributed Energy Systems
源URL[http://ir.giec.ac.cn/handle/344007/37540]  
专题中国科学院广州能源研究所
通讯作者Wang, Xiaohan; Wu, Yong
作者单位1.Guangxi Univ, Coll Chem & Chem Engn, Nanning 530004, Guangxi, Peoples R China
2.Univ Sci & Technol China, Sch Energy Sci & Technol, Hefei 230027, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
5.Dongguan Univ Technol, Key Lab Distributed Energy Syst Guangdong Prov, Dongguan 523808, Peoples R China
6.Chinese Acad Sci, Guangzhou Inst Energy Convers, 2 Nengyuan Rd, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Li, Haowen,Zhang, Jie,Yang, Zixin,et al. Exploration of new olefin production process: Effects of the addition of CO2 and H2O on n-heptane pyrolysis[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2022,167:12.
APA Li, Haowen.,Zhang, Jie.,Yang, Zixin.,Zhang, Wei.,Song, Qianshi.,...&Wu, Yong.(2022).Exploration of new olefin production process: Effects of the addition of CO2 and H2O on n-heptane pyrolysis.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,167,12.
MLA Li, Haowen,et al."Exploration of new olefin production process: Effects of the addition of CO2 and H2O on n-heptane pyrolysis".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 167(2022):12.

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来源：广州能源研究所

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