| 中国煤炭甲烷管控与减排潜力 |
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| 引用本文： | 桑树勋,刘世奇,韩思杰,郑司建,刘统,周效志,王冉,王猛.中国煤炭甲烷管控与减排潜力[J].煤田地质与勘探,2023,51(1):159-175. |
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| 作者姓名： | 桑树勋 刘世奇 韩思杰 郑司建 刘统 周效志 王冉 王猛 |
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| 作者单位： | 1.中国矿业大学 江苏省煤基温室气体减排与资源化利用重点实验室，江苏 徐州 221008 |
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| 基金项目： | 国家自然科学基金碳中和专项项目(42141012)；中国工程院院地合作重大战略咨询项目(2021NXZD3)；国家自然科学基金重点项目(42030810)；国家重大科研仪器研制项目(41727801)；国家自然科学基金面上项目(41972168) |
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| 摘 要： | 甲烷是最主要的非二氧化碳温室气体,受到越来越多的重视。煤炭甲烷是我国最主要的甲烷排放源类型,我国也是世界煤炭甲烷排放量最大的国家,煤炭甲烷的有效排放管控与高效开发利用兼具温室气体减排、能源气体开发利用和灾害气体防治三重意义。基于系统调研和研究工作积累,概述了煤炭甲烷排放管控背景,总结了全球与代表性国家煤炭甲烷排放及其管控现状,阐释了我国煤炭甲烷开发利用与排放管控历程及发展趋势,讨论和前瞻了我国煤炭甲烷减排路径与减排潜力。已有研究工作表明:我国煤炭甲烷排放主要来自煤炭地下开采风排瓦斯,且较长时期内仍是我国煤炭甲烷的主要来源;随着我国关闭矿井增多,由此产生的关闭矿井甲烷排放量呈增长趋势,是我国煤炭甲烷不容忽视的来源。随着碳中和目标的提出,温室气体减排的政策导向逐渐成为我国煤炭甲烷排放管控的重点,明确了煤炭甲烷减排方向。我国煤炭甲烷排放管控形成了以煤层气勘探开发利用、煤矿瓦斯抽采利用、关闭/废弃矿井瓦斯抽采利用、乏风瓦斯利用等全浓度利用,煤炭采前、采中和采后全周期利用为特征的关键技术路径。我国煤炭甲烷排放管控面临巨大压力和严峻挑战,诸多政策、机制、技术问题亟待破解。突破复杂地质条件适配性煤层...
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| 关 键 词： | 煤炭甲烷管控 煤矿瓦斯 煤层气 关闭矿井甲烷 减排潜力 |
| 收稿时间： | 2022-11-30 |
Coal methane control and its emission reduction potential in China |
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| Institution: | 1.Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining and Technology, Xuzhou 221008, China2.Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China3.School of Resource and Geoscience, China University of Mining and Technology, Xuzhou 221116, China |
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| Abstract: | Methane is the most important non-CO2 greenhouse gas, which has attracted more and more attention. Coal methane is the most important methane emission source in China, and China is also the country with the largest amount of coal methane emissions in the world. Therefore, the effective emission control and the efficient development and utilization of coal methane have triple benefits, such as greenhouse gas emission reduction, energy gas development and utilization, and hazardous gas control. Based on the accumulation of systematic investigation and research, the background of coal methane emission control was summarized and conclusion was made for the coal methane emission and its control all over the world and in the representative countries. Besides, the process of coal methane development, utilization and its emission control, as well as the development trend in China was explained. Then, the path and potential of coal methane emission reduction in China were discussed and looked forward. The current researches have shown that the coal methane emission in China mainly comes from the underground coal mining in the form of ventilation air methane, which will also be the main source of coal methane in China for a long time. With the increase of closed mines in China, the coal methane emissions from closed mines will increase, which is a key coal methane source that cannot be ignored in China. With the proposal of "carbon neutrality" goal by China, the policy guidance of greenhouse gas emission reduction has gradually become the focus of the coal methane emission control in China, and the direction of coal methane emission reduction was also clarified. Through the coal methane emission control, the key technology path has been formed in China, which is characterized by the full concentration utilization of coal methane, including the exploration, exploitation and utilization of coalbed methane, the drainage and utilization of coalbed methane in closed or abandoned coal mine, and the utilization of ventilation air gas in the full life cycle before, during and after coal mining. In China, coal methane emission control still faces great pressure and severe challenges with many problems of policy, system and technology to be solved urgently. Thus, the major development directions of the coal methane control in China include the efficient exploration and development technology system of coalbed methane breaking through the adaptability to complex geological conditions, the accurate, digital and intelligent low-carbon efficient drainage technology system of coal mine gas, the emission reduction control and utilization technology system of coal methane in the closed/abandoned coal mine, and the comprehensive utilization technology system of full-concentration coal methane. |
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