关中地区民用燃料燃烧源县级甲烷排放清单估算  

County-level emission inventory of methane from residential fuel combustion sources in the Guanzhong Plain

作　　者：沈振兴[1] 付涛 张斌[1] 孙健 徐红梅 彭泽志 何昆 SHEN Zhenxing;FU Tao;ZHANG Bin;SUN Jian;XU Hongmei;PENG Zezhi;HE Kun(School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049)

机构地区：[1]西安交通大学能源与动力工程学院,西安710049

出　　处：《环境科学学报》2025年第3期67-74,共8页Acta Scientiae Circumstantiae

基　　金：陕西省重点研发计划项目(No.2022ZDLSF06-07)。

摘　　要：基于现场观测的燃料燃烧甲烷排放因子和活动数据,本研究建立了2022年关中地区县级4种民用固体燃料燃烧的甲烷排放清单.估算结果显示,2022年关中地区民用燃烧源甲烷总排放量为21.8×10^(3)t,呈现出渭南市>咸阳市>西安市>宝鸡市>铜川市的趋势.玉米秸秆由于巨大的消耗量,是民用燃烧源甲烷的最大贡献者,占比为62.4%~82.6%;无烟煤燃烧甲烷的排放因子比其他燃料低2~3个数量级,因此,其对民用燃烧源甲烷的贡献不足1%.由于不同燃料排放因子和关中各县固体燃料消耗模式的差异,导致了县级甲烷排放清单的差异.富平县、临潼区和蒲城县是民用燃烧源甲烷排放最大的县,分别占总量的5.36%、5.32%和4.79%.关中地区生物质压块后甲烷的减排率仅为14.7%,而型煤和改良炉灶的使用可使甲烷减排效率高达76.4%,更具有推广实施的意义.本研究建立的县级甲烷排放清单降低了数据的不确定度,提高了清单的分辨率,对关中地区碳减排提供了重要的数据支撑.Based on the methane emission factor obtained in the field and the activity data of residential fuel combustion,the county-level methane emission inventories of four types of solid fuels combustion in the Guanzhong region in 2022 were established in this study.The estimation results showed that the total methane emission from residential fuel combustion sources in Guanzhong region was 2.18×10^(4)t in 2022 with the orders of Weinan City>Xianyang City>Xi’An City>Baoji City>Tongchuan City.Maize straw was the largest contributor to methane in all residential combustion sources due to its larger consumption,accounting for 62.4%~82.6%of total methane from these sources.The emission factor of methane from anthracite coal combustion is 2~3 orders of magnitude lower than that of other fuels,and thus contributed less than 1%to the total methane.The differences in emission factors of the fuels and county-level solid fuel consumption patterns had led to differences in county-level methane emission inventories.Fuping county,Lintong district,and Pucheng county were the largest methane emission areas,accounting for 5.36%,5.32%,and 4.79%of the total methane,respectively.The methane emission reduction rate of biomass briquetting in Guanzhong was only 14.7%,while the use of briquette coal and improved stoves resulted in methane emission reduction efficiencies as high as 76.4%,which was more meaningful for implementation.The countylevel methane emission inventory established in this study has reduced the uncertainty and improved the resolution of data,and laid a solid foundation for carbon reduction in the Guanzhong Plain.

关 键 词：甲烷 民用燃料燃烧源 排放清单 关中平原 

分 类 号：X513[环境科学与工程—环境工程]