矿产保护与利用2025，Vol.45Issue(5)：1-13,13.DOI:10.13779/j.cnki.issn1001-0076.2025.10.010
煤炭地下气化与碳捕集利用技术的集成:实现碳中和的清洁能源路径
Integration of Underground Coal Gasification and Carbon Capture,Utilization,and Storage:A Clean Energy Pathway to Carbon Neutrality
摘要
Abstract
The"carbon neutrality"and"carbon peaking"objectives are propelling China's urgent energy structure transition toward renewable energy sources.As the dominant primary energy,coal must strike a balance between clean utilization and energy security.Notably,over half of China's medium-deep coal resources are unsuitable for conventional mine mining,making underground coal gasification(UCG)a pivotal technology for their development.This study addressed the critical challenges in UCG industrialization,namely the high storage and transportation costs of H2 and the unclosed-loop treatment of CO2 emissions.A novel coupling technical scheme was proposed,integrating three-stage underground coal gasification(UCG-Ⅲ)with near-well CO2 hydrogenation to produce methanol.UCG-Ⅲ is a new generation of clean coal conversion technology,whose core lies in using CO2 as both a product and a gasification agent,and achieving efficient utilization of coal and internal circulation of CO2 through a three-stage process design.The gasification reaction pathway was optimized by this innovative approach to generate hydrogen-rich syngas,which is directly utilized for wellhead CO2 catalytic conversion.Through this,simultaneous on-site hydrogen energy consumption and high-value utilization of carbon resources were achieved.Experimental and economic analyses demonstrated that storage and transportation costs were significantly reduced by 47%compared to traditional methods,and CO2 emissions were lowered by up to 80%through underground CO2 recycling.The dual value of coal as both an"energy service provider"and a"carbon-based material supplier"was validated in this study,paving the way for environmentally friendly and economically feasible clean coal utilization.Current challenges include enhancing the controllability of the three-stage gasification process and developing low-cost skid-mounted methanol conversion equipment.Future research will focus on optimizing process control via multi-physics field model coupling,developing efficient catalysts,and improving system integration to facilitate large-scale industrial application.This work provides a critical technological pathway for China's fossil energy transition toward carbon neutrality.关键词
煤炭地下气化/氢气储运/CO2加氢制甲醇/碳基材料Key words
underground coal gasification/H2 storage and transportation/CO2 hydrogenation to methanol/carbon-based material分类
矿山工程引用本文复制引用
薛俊杰,东振,卢海兵,陈艳鹏,陈浩,张梦媛,赵宇峰..煤炭地下气化与碳捕集利用技术的集成:实现碳中和的清洁能源路径[J].矿产保护与利用,2025,45(5):1-13,13.基金项目
2025年集团公司科学技术委员会战略研究与咨询项目(2025DQ0728) （2025DQ0728）
中石油集团公司基础性前瞻性科研项目(2024DJ23) （2024DJ23）
勘探开发研究院院级项目:煤炭地下气化高效产气机理与运行控制(101001cq0b52394) （101001cq0b52394）
新型油气田国家科技重大专项(2025ZD1404206、2024ZD140604) （2025ZD1404206、2024ZD140604）
