Heat transfer analysis of methane hydrate dissociation by depressurization and thermal stimulation

doi:10.1016/j.ijheatmasstransfer.2018.07.016

GIEC OpenIR

	Heat transfer analysis of methane hydrate dissociation by depressurization and thermal stimulation
	Wan, Qing-Cui 1,2; Si, Hu 1,2; Li, Bo 1,2; Li, Gang3
	2018-12-01
发表期刊	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN	0017-9310
卷号	127 页码:206-217
通讯作者	Si, Hu(sihu@cqu.edu.cn)
摘要	The dissociation of natural gas hydrate is an endothermic reaction closely related with the heat transfer characteristics in porous media. This study mainly focuses on the three-dimensional heat transfer behaviors during hydrate dissociation by depressurization and thermal stimulation based on the experiments in a Cuboid Pressure Vessel (CPV). The evolution of various heat flows (including the heat transferred from the boundaries Q(B), the injected heat from the well Q(inj), the heat consumed by the hydrate dissociation Q(H), and the sensible heat change of the deposit Q(S)) and their relationships during hydrate dissociation are obtained through numerical simulation. The heat loss Q(L) during gas production is calculated and analyzed for the first time. It is found that the hydrate dissociation is mainly promoted by the driving forces of depressurization (F-dep) and thermal stimulation (F-ths), which are dependent on the heat flows of Q(B) and Q(inj), respectively. The effect of F-dep, will be weakened under higher F-ths. Part of Q(inj) and Q(B) are absorbed and stored as Q(S) by the porous media and the fluids of the deposit. Once Q(B) becomes negative, it starts to make contribution to the heat loss instead of the hydrate dissociation, resulting in a sharp increase of Q(L). In addition, a proper thermal stimulation rate q and production pressure P-W, should be selected so that the hydrate dissociation rate could be significantly enhanced while the thermal efficiency and energy efficiency are still favorable when compared with using single depressurization. (C) 2018 Elsevier Ltd. All rights reserved.
关键词	Gas hydrate Heat transfer Depressurization Thermal stimulation Energy efficiency
DOI	10.1016/j.ijheatmasstransfer.2018.07.016
关键词[WOS]	INDUCED GAS-PRODUCTION ; PILOT-SCALE ; NATURAL-GAS ; INJECTION ; ENERGY ; CO2 ; DECOMPOSITION ; SIMULATION ; SEPARATION ; DEPOSITS
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51506016] ; Chongqing Foundation and Advanced Research Project[cstc2016jcyjA0034]
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
项目资助者	National Natural Science Foundation of China ; Chongqing Foundation and Advanced Research Project
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号	WOS:000451366000021
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：57[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/344007/24272
专题	中国科学院广州能源研究所
通讯作者	Si, Hu
作者单位	1.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400094, Peoples R China 2.Chongqing Univ, Coll Resources & Environm Sci, Chongqing 400094, Peoples R China 3.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wan, Qing-Cui,Si, Hu,Li, Bo,et al. Heat transfer analysis of methane hydrate dissociation by depressurization and thermal stimulation[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2018,127:206-217.
APA	Wan, Qing-Cui,Si, Hu,Li, Bo,&Li, Gang.(2018).Heat transfer analysis of methane hydrate dissociation by depressurization and thermal stimulation.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,127,206-217.
MLA	Wan, Qing-Cui,et al."Heat transfer analysis of methane hydrate dissociation by depressurization and thermal stimulation".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 127(2018):206-217.