Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions

doi:10.1016/j.fuel.2022.124128

GIEC OpenIR

	Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions
	Liu, Jia 1,2,3; Wang, Jing 1,2,3; Dong, Ti 1; Liang, Deqing1,2
	2022-08-15
发表期刊	FUEL
ISSN	0016-2361
卷号	322 页码:9
通讯作者	Liang, Deqing(liangdq@ms.giec.ac.cn)
摘要	The solid sediments, resulted from hydrate formation and wax crystallization in crude oil, may generate catastrophic blockage in the pipeline under adverse conditions; this poses a formidable threat to the transportation of deep-sea crude oil. To shed light on the mechanism of the effects of waxes and hydrates in deep-sea crude oil under coexisting conditions, this work systematically investigates the effects of wax crystal precipitation and hydrate formation time-series on hydrate nucleation, growth, aggregation, and crystal structure in oil-water emulsions through experiments. Research results demonstrate that the time sequence of wax crystal precipitation and hydrate formation is concerned with the possibility of significant solid deposit formation; when wax crystal precipitation precedes hydrate formation, the wax crystals inhibit hydrate nucleation and growth; conversely, when hydrate formation precedes wax crystal precipitation, the wax significantly reduces hydrate particle aggregation, which in turn improves the flow characteristics of the hydrate slurry. Additionally, the microscopic analysis further reveals that the presence of wax has no effect on the crystal structure of CH4 hydrate, yet it has a significant effect on the distribution of CH4 in the cavities, i.e. it reduces the occupancy of large cages.
关键词	Hydrate Wax crystals Nucleation Hydrate growth Aggregation
DOI	10.1016/j.fuel.2022.124128
关键词[WOS]	METHANE HYDRATE ; ANTI-AGGLOMERANT ; INDUCTION TIME ; MECHANISM ; INSIGHTS ; NUCLEATION ; GROWTH ; SLURRY ; MODEL
收录类别	SCI
语种	英语
资助项目	Guangdong Major project of Basic and Applied Basic Research[2020B0301030003] ; Guangdong Special Support Program-Local innovation and entrepreneurship team project[2019BT02L278] ; Natural Science Foundation of Guangdong Province[2021A1515110698] ; Fund of Key Laboratory of Gas Hydrate Chinese Academy of Sciences[E129020301]
WOS研究方向	Energy & Fuels ; Engineering
项目资助者	Guangdong Major project of Basic and Applied Basic Research ; Guangdong Special Support Program-Local innovation and entrepreneurship team project ; Natural Science Foundation of Guangdong Province ; Fund of Key Laboratory of Gas Hydrate Chinese Academy of Sciences
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000799813700004
出版者	ELSEVIER SCI LTD
引用统计	被引频次：14[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/344007/36606
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.CAS Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Liu, Jia,Wang, Jing,Dong, Ti,et al. Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions[J]. FUEL,2022,322:9.
APA	Liu, Jia,Wang, Jing,Dong, Ti,&Liang, Deqing.(2022).Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions.FUEL,322,9.
MLA	Liu, Jia,et al."Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions".FUEL 322(2022):9.