气候变化领域集成服务门户(CCPortal): Risk analysis and production safety design of supercritical carbon dioxide storage in gasification combustion cavity

CCPortal

DOI	10.1016/j.energy.2024.130757
	Risk analysis and production safety design of supercritical carbon dioxide storage in gasification combustion cavity
	Li, Wei; Li, Huaizhan; Chen, Yanpeng; Guo, Guangli; Chen, Fu; Tang, Chao; Zha, Jianfeng; Yuan, Yafei; Huo, Wenqi
发表日期	2024
ISSN	0360-5442
EISSN	1873-6785
起始页码	293
卷号	293
英文摘要	The storage of supercritical carbon dioxide in the coal underground gasification combustion cavity can not only reduce greenhouse gas emissions, help control global climate change, but also avoid potential geological hazards caused by the long-term existence of coal-burning holes. It is an important innovative development direction for the global coal industry. However, currently, there is insufficient examination of the practicality and hazards of UCG-CCS through industrial trials, which considerably restricts the spread and use of UCG-CCS. This study employs theoretical analysis and numerical simulation to examine the geological feasibility of UCG-CCS. It finds that the risk of carbon dioxide leakage in UCG-CCS is predominantly due to overlying rock fractures being diffused by the integrity of the cover layer and the parameters of the gasification furnace. It has also been found that the development height of cap rock fractures is closely related to CO2 injection pressure and gasification furnace width. As CO2 injection pressure increases, the capping fracture exhibits a descending trend resembling a stair-step; as gasification furnace width decreases, the development height of cap rock fractures decreases. On this basis, the technical approach and design method of preventing carbon dioxide leakage in UCG-CCS are proposed. The research findings have significant theoretical and practical implications for site selection and risk assessment in UCG-CCS process engineering.
英文关键词	Underground coal gasification; Supercritical CO 2; Overlying fissures develop; The cap rock sinks
语种	英语
WOS研究方向	Thermodynamics ; Energy & Fuels
WOS类目	Thermodynamics ; Energy & Fuels
WOS记录号	WOS:001199189500001
来源期刊	ENERGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296866
作者单位	China University of Mining & Technology; China University of Mining & Technology; China National Petroleum Corporation
推荐引用方式 GB/T 7714	Li, Wei,Li, Huaizhan,Chen, Yanpeng,et al. Risk analysis and production safety design of supercritical carbon dioxide storage in gasification combustion cavity[J],2024,293.
APA	Li, Wei.,Li, Huaizhan.,Chen, Yanpeng.,Guo, Guangli.,Chen, Fu.,...&Huo, Wenqi.(2024).Risk analysis and production safety design of supercritical carbon dioxide storage in gasification combustion cavity.ENERGY,293.
MLA	Li, Wei,et al."Risk analysis and production safety design of supercritical carbon dioxide storage in gasification combustion cavity".ENERGY 293(2024).