A Review of Research on Cavity Growth in the Context of Underground Coal Gasification

doi:10.3390/en15239252

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	A Review of Research on Cavity Growth in the Context of Underground Coal Gasification
	Fang, Huijun 3,4; Liu, Yuewu 1,2; Ge, Tengze 3,4; Zheng, Taiyi 2; Yu, Yueyu 3,4; Liu, Danlu 3,4; Ding, Jiuge 2; Li, Longlong 2
刊名	ENERGIES
	2022-12-01
卷号	15 期号:23 页码:21
关键词	underground coal gasification cavity growth field test laboratory experiment numerical simulation
DOI	10.3390/en15239252
通讯作者	Liu, Yuewu(lywu@imech.ac.cn) ; Zheng, Taiyi(zhengtaiyi@imech.ac.cn)
英文摘要	Underground Coal Gasification (UCG) is a leading-edge technology for clean and effective utilization of coal resources, especially for deep coal seams with a depth of more than 1000 m. Since the core operation place of UCG is the cavity, mastering the cavity growth pattern is a prerequisite to ensure the efficient and economic development of UCG. At present, scholars have conducted numerous research works on cavity growth, but the simulation conditions limit the research results. Hence, it is necessary to summarize and sort out the research results of cavity growth patterns, which contribute to deepening the understanding of UCG and pointing out the direction for subsequent research. First of all, this paper summarizes the development history of UCG technology and describes the cavity growth mechanism from chemical reactions and thermo-mechanical failure. Then, the research methods of cavity growth are summarized from three aspects: a field test, laboratory experiment, and numerical simulation. The results show that the appearance of the cavity is teardrop-shaped, and its growth direction is obviously related to the gas injection method, including the injection direction and rate. Subsequently, the factors affecting the cavity growth process are expounded from the geological factors (permeability, moisture content, and coal rank) and operating factors (temperature, pressure, gasification agent's composition, and gasification agent's flow pattern). Finally, the existing problems and development trends in the cavity growth are discussed. The follow-up research direction should focus on clarifying the cavity growth mechanism of the controlled-retractable-injection-point (CRIP) method of UCG in the deep coal seam and ascertain the influence of the moisture content in the coal seam on cavity growth.
资助项目	Major special projects of CNPC science and technology ; [2019E025]
WOS关键词	PROCESS MODEL ; NUMERICAL-SIMULATION ; TEMPERATURE-FIELD ; SURROUNDING ROCK ; LIGNITE COAL ; UCG PROCESS ; COMBUSTION ; SITU ; PRESSURE ; SCALE
WOS研究方向	Energy & Fuels
语种	英语
WOS记录号	WOS:000896456200001
资助机构	Major special projects of CNPC science and technology
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/91225]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Liu, Yuewu; Zheng, Taiyi
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 3.PetroChina Coalbed Methane Co Ltd, Beijing 100028, Peoples R China 4.China United Coalbed Methane Natl Engn Res Ctr Co, Beijing 100095, Peoples R China
推荐引用方式 GB/T 7714	Fang, Huijun,Liu, Yuewu,Ge, Tengze,et al. A Review of Research on Cavity Growth in the Context of Underground Coal Gasification[J]. ENERGIES,2022,15(23):21.
APA	Fang, Huijun.,Liu, Yuewu.,Ge, Tengze.,Zheng, Taiyi.,Yu, Yueyu.,...&Li, Longlong.(2022).A Review of Research on Cavity Growth in the Context of Underground Coal Gasification.ENERGIES,15(23),21.
MLA	Fang, Huijun,et al."A Review of Research on Cavity Growth in the Context of Underground Coal Gasification".ENERGIES 15.23(2022):21.