第4期 桑树勋等:碳中和地质技术及其煤炭低碳化应用前瞻
Geological technology for carbon neutrality and its application prospect for
low carbon coal exploitation and utilization
SANG Shuxun1,2,3,4 ,YUAN Liang5,LIU Shiqi1,2 ,HAN Sijie1,2 ,ZHENG Sijian1,2 ,
LIU Tong1,2 ,ZHOU Xiaozhi3,WANG Ran3
(1.Jiangsu Key Laboratory of Coal⁃based Greenhouse Gas Control and Utilization,China University of Mining and Technology,Xuzhou 221008, China;
2.Carbon Neutrality Institute,China University of Mining and Technology,Xuzhou 221008, China; 3. School of Mineral Resource and Geoscience,China
University of Mining and Technology,Xuzhou 221116,China;4.School of Low Carbon Energy and Power Engineering,China University of Mining and Tech⁃
nology,Xuzhou 221116,China;5.State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Sci⁃
ence and Technology,Huainan 232001,China)
Abstract:In this study, the formation background of geological technology for carbon neutrality and its position
in the knowledge system of carbon neutrality are outlined.The concept and connotation of geological technology for car⁃
bon neutrality are proposed.The important application directions,application models and development prospects of geo⁃
logical technology for carbon neutrality in the process of low carbon coal exploitation and utilization are analyzed
and discussed. Current works have shown that the cross⁃discipline of carbon neutrality science and engineering as
a knowledge system of carbon neutrality is emerging.On the basic background of earth science,the interdisciplinary in⁃
tegration of carbon neutrality⁃related disciplines is becoming the present main research fields and technology develop⁃
ment directions of carbon neutrality science and engineering.Geological technology for carbon neutrality is an impor⁃
tant component of carbon neutrality science and engineering, and also a key technology to achieve carbon
neutrality goal.Carbon dioxide capture,utilization and storage technology,ecological geology and carbon sink technolo⁃
gy,emission reduction of coal bed methane and its related resource utilization technology,geological technology for
low⁃carbon development and utilization of fossil energy,high⁃efficiency exploration and development technology of geo⁃
thermal resource,geological guarantee technology for efficient and safe development and utilization of new energy,min⁃
eralization and carbon sequestration and geoengineering are the current core connotation of geological technology
for carbon neutrality. With the development of following technologies, e. g., CCUS ( Carbon Capture, Utilization
and Storage) large⁃scale cluster deployment and whole process technology,coalbed methane continuous efficient ex⁃
traction and low concentration gas (including ventilation air methane) utilization technology,the whole process tech⁃
nology of exploration, mining and smelting of coal⁃hosted key metals, ecological geological restoration and
reconstruction of mining area and the increase in carbon sink technology, exploration, development and utilization
of new energy resources of geothermy in hot dry rock,geological guarantee technologies for the development and utili⁃
zation of hydropower,nuclear power and other new energy sources with integrated power supply and storage,and solar
radiation management frontier technology,some significant progresses have been made for carbon neutrality.The CCUS
will be the key to low carbon,clean and efficient utilization of coal technologies such as the low emission coal⁃fired
power generation,coal conversion,coal to hydrogen,coal to special fuels,and coal⁃based materials.The CCUS in coal
base or coal mining area,characterized by coal⁃based CO2source,coal⁃measure CO2geological carbon sink,CO2min⁃
eralization and fixation and goaf filling and sealing,is an urgent need. In⁃situ exploration and development of coal⁃
bed methane,underground and surface collaborative extraction of coalbed gas,extraction of closed mine gas,utilization
of low concentration coalbed methane and ventilation air methane,application model of high⁃efficiency efficient extrac⁃
tion,utilization and emission reduction comprehensive technology of coalbed methane will be rapidly developed and
popularized.The controlling of overburden deformation and the maintaining of surface vegetation ecosystem,the protec⁃
tion of water resources and regional ecosystem,the controlling of mining⁃induced fractures and greenhouse gas emission
and the development and application of green and intelligent mine geological guarantee technology by means of digit⁃
al mine and energy saving and efficiency improvement contribute to the carbon reduction in coal production process.
Ecological restoration and carbon sequestration technology in coal mining areas should be applied to realize the coordi⁃
nation between coal gangue disposal and pollution reduction and carbon reduction, treatment of subsidence area
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