摘要
开展淮南煤田各类型地质体CCUS源汇潜力评估及其匹配性研究,对于CO_(2)–ECBM技术工程化推广意义深远。以淮南煤田各类型地质体(深部不可采煤层、残留煤体、采空区)为研究对象,首先,探讨了各类型地质体CO_(2)地质封存潜力评估方法;其次,分析了各类型地质体CO_(2)地质封存潜力;然后,基于成本最低目标函数及改进节约里程法,开展了CO_(2)地质封存源汇匹配研究,并优化了其管网设计;最后,基于3步走思路,提出了CCS源汇管网规划设计思路的系统建议。研究结果表明:燃煤电厂年平均CO_(2)排放量为0.588亿t,深部不可采煤层、残留煤体及采空区内CO_(2)地质封存总潜力分别为7.6200亿、0.0517亿、0.8246亿t,可分别封存CO_(2)12.97 a、0.088 a及1.40 a;10 a周期内,深部不可采煤层可封存CO_(2)5.876亿t,累计规划管道217.0960 km,需要资金373亿美元;1.45 a周期内,生产矿井及关闭矿井可封存CO_(2)0.852亿t,累计规划管道464.5161 km,需要资金73.6亿美元;基于改进节约里程法,CCS源汇匹配各地质封存汇点累计节约里程266.6127 km,累计节约成本11.21亿美元,分别占管道运输总里程、总成本的57.40%、79.95%;基于3步走思路,可分阶段、分区域实现淮南煤田各CO_(2)排放源及CO_(2)封存汇的全线贯通,可实现CO_(2)的全部运输及地质封存。
The evaluation and matching of CCUS source and sink potential of various geological bodies in Huainan coalfield is of great significance to the engineering popularization of CO_(2)–ECBM technology.In this study,various types of geological bodies,such as deep unworkable coal seam,residual coal body and goaf area,in Huainan coalfield were taken as the research object.Firstly,the evaluation methods of CO_(2)geologic storage potential of various geologic bodies were discussed.Secondly,the CO_(2)storage potential of various geologic bodies was analyzed.Then,based on the lowest cost objective function and improved mileage saving method,the source and sink matching research of CO_(2)geological storage was carried out,and the pipe network design was optimized.Finally,based on the three-step thinking,the design idea of CCS source and sink network planning was proposed.The results show that the total annual CO_(2)emissions of coal-fired power plants are 58.8 million tons.The total CO_(2)geological storage potential in deep non-mining coal seam,resid-ual coal and goaf area is 762 million tons,5.17 million tons and 82.46 million tons,respectively,which can store CO_(2)for 12.97 years,0.088 years and 1.40 years,respectively.Within the 10-year cycle,the deep unworkable coal seam can store 587.6 million tons of CO_(2),and the cumulative planned pipeline is 217.0960 km with requiring a cumulative capital of 3.73×10^(10)$.Within the 1.45-year cycle,production mines and closed mines can store 85.2 million tons of CO_(2),and the cumulative planned pipeline is 464.5161 km with requiring a cumulative capital of 7.36×109$.Based on the improved mileage saving method,CCS source and sink matching each geological storage junction saved 266.6127 km and 1.121×109$,accounting for 57.40%and 79.95%of the total mileage and total cost of pipeline transportation,respectively.Based on the three-step approach,the whole line of CO_(2)emission sources and CO_(2)storage sinks in Huainan coal field can be completed by stages and regions,and all CO
作者
方辉煌
桑树勋
张平松
刘世奇
王章飞
郭金冉
陈锐
FANG Huihuang;SANG Shuxun;ZHANG Pingsong;LIU Shiqi;WANG Zhangfei;GUO Jinran;CHEN Rui(School of Earth and Environment,Anhui University of Science and Technology,Huainan232001,China;Institute of Energy,Hefei Comprehensive National Science Center,Hefei 230000,China;Key Laboratory of Coal-based CO_(2) Capture and Geological Storage,Jiangsu Province,Low Carbon Energy Institute,China University of Mining and Technology,Xuzhou 221116,China)
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2024年第8期3580-3592,共13页
Journal of China Coal Society
基金
安徽省自然科学基金资助项目(2308085Y30)
安徽省重点研究与开发计划基础领域资助项目(2023z04020001)
安徽省高等学校自然科学研究资助项目(2023AH040154)。
