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Evaluation of Kinetic Inhibition of Methane Hydrate Formation by a Copolymer of N-Vinylcaprolactam with 1-Vinylimidazole
Long, Zhen1,2,3,4; Lu, Zhilin1,2,3,4,5; Ding, Qihang1,2,3,4,5; Zhou, Xuebing1,2,3,4; Lei, Jiao6; Liang, Deqing1,2,3,4
2019-10-01
发表期刊ENERGY & FUELS
ISSN0887-0624
卷号33期号:10页码:10133-10142
通讯作者Liang, Deqing(liangdq@ms.giec.ac.cn)
摘要This study investigated methane hydrate inhibition by a new polyvinyl lactam-based kinetic hydrate inhibitor (KHI) by determining the maximum subcooling temperature, induction time, and growth rate using a high-pressure sapphire reactor. The studied KHI, namely, the random copolymer of N-vinylcaprolactam and 1-vinylimidazole (PVCap-co-VIM), was synthesized by free radical solution polymerization with the objective of producing copolymers with higher cloud points than the poly(N-vinylcaprolactam) (PVCap) homopolymer. These data were compared with those of laboratory-made PVCap and commercial poly(N-vinylpyrrolidone) (PVPK90) under various cooling rates (1.0, 2.0, and 5.0 K/h) and mass concentrations (0.5, 1.0, and 2.0 wt %). The experimental results showed that the cooling rate had little effect on the maximum subcooling temperature of the KHIs. PVCap-co-VIM was capable of delaying the nucleation of hydrate crystals for a longer time than PVPK90 and successfully suppressed hydrate growth in the early stage of hydrate formation. PVCap performed better than PVCap-co-VIM under the same conditions, but PVCap-co-VIM exhibited a significantly higher cloud point temperature (T-CI > 70 degrees C) than PVCap (T-CI = 37.9 degrees C), which was beneficial for field applications. Furthermore, the measured powder X-ray diffraction and Raman spectral data showed that the formed hydrate structures were the same (structure I) for all the studied KHI-containing systems, despite some differences in the characteristic peak intensities as a result of different inhibitory activities. Cryo-scanning electron microscopy images illustrated that the morphology of the formed CH4 hydrate crystals varied significantly by KHIs, which could be helpful for safe pipeline fluid transportation.
DOI10.1021/acs.energyfuels.9b01935
关键词[WOS]GAS HYDRATE ; CRYSTAL-GROWTH ; CH4 HYDRATE ; PERFORMANCE ; POLYMERS ; PRESERVATION ; GLYCOL ; WATER
收录类别SCI
语种英语
资助项目National Natural Science Foundation of China[51506202] ; National Natural Science Foundation of China[41603062] ; Pearl River S&T Nova Program of Guangzhou[201806010114] ; National Key Research and Development Plan of China[2017YFC0307306]
WOS研究方向Energy & Fuels ; Engineering
项目资助者National Natural Science Foundation of China ; Pearl River S&T Nova Program of Guangzhou ; National Key Research and Development Plan of China
WOS类目Energy & Fuels ; Engineering, Chemical
WOS记录号WOS:000492113000098
出版者AMER CHEMICAL SOC
引用统计
被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/26194
专题中国科学院广州能源研究所
通讯作者Liang, Deqing
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Sci, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China
4.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
5.Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215123, Peoples R China
6.Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China
第一作者单位中国科学院广州能源研究所
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GB/T 7714
Long, Zhen,Lu, Zhilin,Ding, Qihang,et al. Evaluation of Kinetic Inhibition of Methane Hydrate Formation by a Copolymer of N-Vinylcaprolactam with 1-Vinylimidazole[J]. ENERGY & FUELS,2019,33(10):10133-10142.
APA Long, Zhen,Lu, Zhilin,Ding, Qihang,Zhou, Xuebing,Lei, Jiao,&Liang, Deqing.(2019).Evaluation of Kinetic Inhibition of Methane Hydrate Formation by a Copolymer of N-Vinylcaprolactam with 1-Vinylimidazole.ENERGY & FUELS,33(10),10133-10142.
MLA Long, Zhen,et al."Evaluation of Kinetic Inhibition of Methane Hydrate Formation by a Copolymer of N-Vinylcaprolactam with 1-Vinylimidazole".ENERGY & FUELS 33.10(2019):10133-10142.
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