机构地区:[1]State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China [2]China Energy Digital Technology Group Co.Ltd.,Beijing 100044,China [3]Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430064,China [4]Department of Chemical and Petroleum Engineering,University of Calgary,Calgary,AB T2N 1N4,Canada [5]Eastern Institute of Technology,Ningbo 315200,China [6]Geosciences Barcelona CSIC,Spanish National Research Council,Barcelona 08028,Spain
出 处:《Engineering》2024年第9期226-246,共21页工程(英文)
基 金:supported by the National Natural Science Foundation of China(52074046,52122403,51834003,and 52274073);the Graduate Research and Innovation Foundation of Chongqing(CYB22023);the Chongqing Talents Plan for Young Talents(cstc2022ycjh-bgzxm0035);Hunan Institute of Engineering(21RC025 and XJ2005);Hunan Province Education Department(21B0664).
摘 要:Underground salt cavern CO_(2) storage(SCCS)offers the dual benefits of enabling extensive CO_(2) storage and facilitating the utilization of CO_(2) resources while contributing the regulation of the carbon market.Its economic and operational advantages over traditional carbon capture,utilization,and storage(CCUS)projects make SCCS a more cost-effective and flexible option.Despite the widespread use of salt caverns for storing various substances,differences exist between SCCS and traditional salt cavern energy storage in terms of gas-tightness,carbon injection,brine extraction control,long-term carbon storage stability,and site selection criteria.These distinctions stem from the unique phase change characteristics of CO_(2) and the application scenarios of SCCS.Therefore,targeted and forward-looking scientific research on SCCS is imperative.This paper introduces the implementation principles and application scenarios of SCCS,emphasizing its connections with carbon emissions,carbon utilization,and renewable energy peak shaving.It delves into the operational characteristics and economic advantages of SCCS compared with other CCUS methods,and addresses associated scientific challenges.In this paper,we establish a pressure equation for carbon injection and brine extraction,that considers the phase change characteristics of CO_(2),and we analyze the pressure during carbon injection.By comparing the viscosities of CO_(2) and other gases,SCCS’s excellent sealing performance is demonstrated.Building on this,we develop a long-term stability evaluation model and associated indices,which analyze the impact of the injection speed and minimum operating pressure on stability.Field countermeasures to ensure stability are proposed.Site selection criteria for SCCS are established,preliminary salt mine sites suitable for SCCS are identified in China,and an initial estimate of achievable carbon storage scale in China is made at over 51.8-77.7 million tons,utilizing only 20%-30%volume of abandoned salt caverns.This paper addresses
关 键 词:Carbon-neutrality Salt cavern Large-scale CO_(2)storage Injection and withdrawal Stability analysis
分 类 号:X701[环境科学与工程—环境工程]
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