山西省煤矿甲烷排放量与利用量精细测算  

Fine calculation of methane emissions and utilization amount from coal mines in Shanxi Province

作　　者：刘虹 赵美琳[1] 赵康 张瑞 马庭林[3] 薛文林 侯志华 张清源 张孝义 LIU Hong;ZHAO Meilin;ZHAO Kang;ZHANG Rui;MA Tinglin;XUE Wenlin;HOU Zhihua;ZHANG Qingyuan;ZHANG Xiaoyi(School of Management,China University of Mining and Technology,Beijing 100083,China;Energy Institute,Academy of Macroeconomic Research,Beijing 100083,China;Shanxi Today Think Tank Energy Co.,Ltd.,Taiyuan,Shanxi 030000,China)

机构地区：[1]中国矿业大学(北京)管理学院,北京市 [2]中国宏观经济研究院能源研究所 [3]山西今日智库能源有限公司

出　　处：《天然气工业》2022年第6期179-185,共7页Natural Gas Industry

基　　金：煤炭资源与安全开采国家重点实验室开放基金资助项目“山西煤炭开采甲烷排放定量模型研究”(编号:SKLCRSM20KFA05)。

摘　　要：甲烷是仅次于二氧化碳的第二大温室气体,其中煤矿开采活动中排放的甲烷量约占全国甲烷排放总量的33%,其引发的温室效应不容忽视。为此,以中国煤矿主要生产区域之一的山西省为研究对象,采用实测调查和典型样本推演的计算方法,基于2019年煤矿开采过程中瓦斯动态监测数据,精细测算了山西省各行政区不同类型矿井的甲烷涌出因子、甲烷排放因子和甲烷排放强度,编制了区域内甲烷排放清单。研究结果表明:①甲烷排放因子为5.08 m^(3)/t,甲烷排放因子高值区主要分布在中部和东南部地区;②煤矿甲烷涌出量、净排放量和利用量分别为63.91×10^(8)m^(3),40.39×10^(8)m^(3),23.50×10^(8)m^(3),甲烷利用率为36.78%;③不同行政区域甲烷排放强度差异巨大,甲烷排放强度高值区主要分布在中部和东南部地区。为了控制山西省煤矿甲烷的排放量,提出了3点建议:①制定符合国情的煤矿甲烷排放量管控制度,将甲烷排放量控制纳入国家气候目标,编制温室气体排放清单,构建甲烷排放监测体系;②加强煤层气与井下瓦斯协同开采,降低矿区煤层中甲烷排放的绝对含量;③深入开展甲烷富集和纯化工艺的研究,提高煤矿甲烷的利用率,实现煤矿低碳绿色开采。Methane is the second largest greenhouse gas after carbon dioxide,and methane emissions in coal mining account for 33%of total national methane emissions,so its induced greenhouse effect shall not be ignored.Taking Shanxi Province which is one of the main coal mining areas in China as the research object,this paper finely calculates the methane outflow factor,methane emission factor and methane emission intensity of different types of coals in different administrative regions of Shanxi Province based on the gas performance monitoring data in the produces of coal mining in 2019,by means of field investigation and typical sample deduction.In addition,the methane emission inventory of each region is prepared.And the following research results are obtained.First,the methane emission factor is 5.08 m^(3)/t,and the high value is mainly distributed in the central and the southeastern areas.Second,the outflow,net emission and utilization of coal mine methane are 63.91×10^(8) m^(3),40.39×10^(8) m^(3) and 23.50×10^(8) m^(3),respectively,and the methane utilization ratio is 36.78%.Third,the methane emission intensity in different administrative regions varies greatly,and the high value is mainly distributed in the central and the southeastern areas.In order to control the emissions of coal mine methane in Shanxi Province,three suggestions are proposed.First,formulate a coal mine methane emission control system in line with China's national conditions,including methane emission control in the national climate goal,prepare greenhouse gas emission inventory and construct a methane emission monitoring system.Second,strengthen the collaborative mining of coalbed methane and downhole gas and reduce the absolute content of methane emission in coal seams of the mining area.Third,research methane enrichment and purification technologies further and improve the utilization ratio of coal mine methane,so as to achieve low-carbon green coal mining.

关 键 词：煤矿开采 甲烷 排放清单 涌出因子 排放强度 矿井类型 利用率 煤层气 管控政策 

分 类 号：TD712[矿业工程—矿井通风与安全]