Experimental studies on n- heptane pyrolytic characteristics in CO2/H2O atmosphere

doi:10.1016/j.jaap.2020.104999

	Experimental studies on n- heptane pyrolytic characteristics in CO2/H2O atmosphere
	Li, Haowen 3,4; Wang, Xiaohan 2,4; Li, Xing 2,4; Su, Yi 1; Zhang, Shicheng 1; Song, Qianshi 3,4; Tang, Zhaofan 1
刊名	JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
	2021-03-01
卷号	154 页码:11
关键词	n-Heptane Pyrolysis Olefin selectivity CO2/H2O atmosphere Residence time
ISSN号	0165-2370
DOI	10.1016/j.jaap.2020.104999
通讯作者	Wang, Xiaohan(wangxh@ms.giec.ac.cn) ; Su, Yi(colinsuyi@163.com)
英文摘要	The pyrolysis experiments of n-heptane in the CO2/H2O atmosphere were carried out in a millimeter-sized tube reactor. Mass yields and molar concentrations of gaseous products, including C2H4, C3H6, H-2, CO, CH4, and C2H6, were obtained at a temperature range of 1073-1373 K, and atmospheric pressure. The pyrolysis characteristics of n-heptane under different reaction atmospheres and residence times were summarized. The results showed that the mass yields of ethylene and propylene in the mixed atmosphere of CO2 and H2O were 7.9 %-36.8 % higher than those in the single H2O atmosphere under low residence times. The yield and selectivity of olefin increased with increasing the temperature within narrow residence time range (less than 0.2 s). At 1173 K, the total mass yield of ethylene and propylene was more than 60 %, and the olefin selectivity was about 40 %, which was the peak value among all experimental temperature conditions. With a rise in temperature, there also occurred an interaction between pyrolysis and gasification processes as reported in the literature, and the gasification reaction rate increased, which led to the high production of CO and H-2. The overall studies in this paper show that reasonable and accurate control of reaction residence time in the CO2&H2O pyrolysis process is important to obtain higher olefin yield and selectivity, especially when the operating temperature is higher than 1173 K.
资助项目	National Natural Science Foundation of China[51976219] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA 21060102] ; National Key R&D Program of China[2018YFB1501500] ; Technology Development Program of SMDERI[H2018J-192-X5]
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000620367800004
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; Technology Development Program of SMDERI
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/32751]
专题	中国科学院广州能源研究所
通讯作者	Wang, Xiaohan; Su, Yi
作者单位	1.Shanghai Marine Diesel Engine Res Inst, 3111 Huaning Rd, Shanghai 201108, Peoples R China 2.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Li, Haowen,Wang, Xiaohan,Li, Xing,et al. Experimental studies on n- heptane pyrolytic characteristics in CO2/H2O atmosphere[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2021,154:11.
APA	Li, Haowen.,Wang, Xiaohan.,Li, Xing.,Su, Yi.,Zhang, Shicheng.,...&Tang, Zhaofan.(2021).Experimental studies on n- heptane pyrolytic characteristics in CO2/H2O atmosphere.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,154,11.
MLA	Li, Haowen,et al."Experimental studies on n- heptane pyrolytic characteristics in CO2/H2O atmosphere".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 154(2021):11.