城镇燃气管道阀门井甲烷逸散排放强度分析OA
Analysis of Methane Fugitive Emission Intensity from Valve Wells of Urban Gas Pipelines
使用通量室法对城镇燃气管道阀门井的甲烷逸散排放强度进行实测分析.共采集阀门井甲烷逸散数据60个,全部样本均为PE管道,其中11处阀门井中为钢质阀门,49处阀门井中为PE阀门.存在逸散现象的阀门井在全部阀门井中占比为16.95％.在压力为0.24 MPa的条件下,平均每1 km管道的甲烷逸散排放强度约25.94 mg/h.城镇燃气管道阀门井甲烷排放呈现偏态分布,其中30％的排放源排放了 95.03％的甲烷.管道公称外径为110、160 mm间的阀门井和使用PE阀门的阀门井发生甲烷逸散排放的概率较高.
A field measurement and analysis of meth-ane fugitive emission intensity from valve wells of urban gas pipelines was carried out using the flux chamber method.A total of 60 sets of methane fugitive emission data were collected from valve wells across polyethylene(PE)pipelines.Of these,11 valve wells feature steel valves and 49 feature PE valves.The pro-portion of valve wells with fugitive emissions is 16.95％.At a pressure of 0.24 MPa,the average meth-ane fugitive emission intensity is approximately 25.94 mg/h per kilometer of pipeline.Methane emissions from urban gas pipeline valve wells show a skewed dis-tribution:30％of the emission sources accounts for 95.03％of total methane emissions.Valve wells with a nominal outer pipe diameter between 110 mm and 160 mm and those fitted with PE valves exhibit a higher probability of methane fugitive emissions.
李天昊;雷宏亮;王昊;徐先港;董建锴;曹慧哲
哈尔滨工业大学 建筑与设计学院寒地城乡人居环境科学与技术工业和信息化部重点实验室,黑龙江哈尔滨 150006沭阳华润燃气有限公司,江苏宿迁 223600哈尔滨工业大学 建筑与设计学院寒地城乡人居环境科学与技术工业和信息化部重点实验室,黑龙江哈尔滨 150006哈尔滨工业大学 建筑与设计学院寒地城乡人居环境科学与技术工业和信息化部重点实验室,黑龙江哈尔滨 150006哈尔滨工业大学 建筑与设计学院寒地城乡人居环境科学与技术工业和信息化部重点实验室,黑龙江哈尔滨 150006哈尔滨工业大学 建筑与设计学院寒地城乡人居环境科学与技术工业和信息化部重点实验室,黑龙江哈尔滨 150006
建筑与水利
城镇燃气管道阀门井甲烷逸散排放强度
urban gas pipelinevalve wellmethane fugitive emission intensity
《煤气与热力》 2026 (4)
85-88,4
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