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Reactivity and structural changes of asphaltene during the supercritical water upgrading process

文献类型：期刊论文

作者Li, Ning1,2,3; Zhang, Xinghua2,3; Zhang, Qi2,3; Chen, Lungang2,3; Ma, Longlong2,3; Xiao, Xianming1
刊名FUEL
出版日期2020-10-15
卷号278页码:9
关键词Asphaltene Supercritical water Reactivity Structural changes
ISSN号0016-2361
DOI10.1016/j.fuel.2020.118331
通讯作者Zhang, Xinghua(zhangxh@ms.giec.ac.cn) ; Ma, Longlong(mall@ms.giec.ac.cn)
英文摘要Experiments on the reactivity and structural changes of asphaltene in the SCW upgrading process were conducted with a batch reactor. The reactivity and structural changes of asphaltene was evaluated with the yield of products (gas, maltene and coke) and the characterizations of remaining asphaltene with elemental analysis (C, H, N, and S), gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR) H-1 and nuclear magnetic resonance (H-1 NMR). As shown from the transformation of asphaltene, the enhance of severity condition would increase the conversion of asphaltene but resulted in the secondary reaction of maltene and the formation of more coke and gases. And the characterizations fully illustrated that the size was greatly reduced, the ratios of H/C, N/C and S/C were seriously lowered, the alkyl side chains were much shorted and the aromaticity and condensation degree were significantly enhanced as for remaining asphaltene obtained from the SCW upgrading process. Finally, the transformation pathway of asphaltene was analyzed with the reconstruction of asphaltene macromolecular model at various severity condition and the results showed that the reactivity and structural changes of asphaltene was closely related to the cracking of asphaltene macromolecular into smaller one, the fracture of alkyl side chains and the reaction of dehydrogenation and polymerization.
WOS关键词UNSATURATED ALIPHATICS HYDROGENATION ; HEAVY OIL ; COKE FORMATION ; RESIDUAL OIL ; GASIFICATION ; POLYETHYLENE ; PYROLYSIS ; OXIDATION ; BITUMEN ; SUPPRESSION
资助项目National Key R&D Program of China[2019YFD1100601] ; National Natural Science Foundation of China[21908220] ; National Natural Science Foundation of China[51576198] ; National Natural Science Foundation of China[51876210] ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21060102] ; Guangdong Natural Science Funds[2020A1515010364]
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000559055900012
出版者ELSEVIER SCI LTD
资助机构National Key R&D Program of China ; National Natural Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Guangdong Natural Science Funds
源URL[http://ir.giec.ac.cn/handle/344007/27603]  
专题中国科学院广州能源研究所
通讯作者Zhang, Xinghua; Ma, Longlong
作者单位1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, PR, Peoples R China
2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Li, Ning,Zhang, Xinghua,Zhang, Qi,et al. Reactivity and structural changes of asphaltene during the supercritical water upgrading process[J]. FUEL,2020,278:9.
APA Li, Ning,Zhang, Xinghua,Zhang, Qi,Chen, Lungang,Ma, Longlong,&Xiao, Xianming.(2020).Reactivity and structural changes of asphaltene during the supercritical water upgrading process.FUEL,278,9.
MLA Li, Ning,et al."Reactivity and structural changes of asphaltene during the supercritical water upgrading process".FUEL 278(2020):9.

入库方式： OAI收割

来源：广州能源研究所

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