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工程机械不同工况下PM2.5排放及其碳质组分特征

曲 亮 何立强 胡京南 金陶胜 祖 雷 王鸣宇 宋敬浩

曲 亮, 何立强, 胡京南, 金陶胜, 祖 雷, 王鸣宇, 宋敬浩. 工程机械不同工况下PM2.5排放及其碳质组分特征[J]. 环境科学研究, 2015, 28(7): 1047-1052.
引用本文: 曲 亮, 何立强, 胡京南, 金陶胜, 祖 雷, 王鸣宇, 宋敬浩. 工程机械不同工况下PM2.5排放及其碳质组分特征[J]. 环境科学研究, 2015, 28(7): 1047-1052.
QU Liang, HE Liqiang, HU Jingnan, JIN Taosheng, ZU Lei, WANG Mingyu, SONG Jinghao. Characteristics of PM2.5 Emissions and Its Carbonaceous Components from Construction Machines Under Different Typical Driving Modes[J]. Research of Environmental Sciences, 2015, 28(7): 1047-1052.
Citation: QU Liang, HE Liqiang, HU Jingnan, JIN Taosheng, ZU Lei, WANG Mingyu, SONG Jinghao. Characteristics of PM2.5 Emissions and Its Carbonaceous Components from Construction Machines Under Different Typical Driving Modes[J]. Research of Environmental Sciences, 2015, 28(7): 1047-1052.

工程机械不同工况下PM2.5排放及其碳质组分特征

基金项目: 国家自然科学基金项目(50808169,21477057);国家环境保护公益性行业科研专项(201209002)

Characteristics of PM2.5 Emissions and Its Carbonaceous Components from Construction Machines Under Different Typical Driving Modes

  • 摘要: 我国工程机械排放控制起步较晚. 为研究实际工况下工程机械的PM2.5排放特性及其碳质组分构成,采用便携式颗粒物稀释采样系统,对3台工程机械(2台挖掘机和1台装载机)在不同典型工况(行驶、作业和怠速)下的PM2.5及其碳质组分〔OC(有机碳)和EC(元素碳)〕的现场排放特征进行了测试. 结果表明:沃尔沃挖掘机、山河智能挖掘机的PM2.5排放因子(基于燃油)分别为1.85~3.26和1.56~2.62 g/kg,厦工装载机的PM2.5排放因子为0.98~1.48 g/kg. 不同工况对PM2.5排放因子影响较大,怠速工况下PM2.5排放因子是行驶工况下的1.49~1.76倍. 工程机械排放的PM2.5中,碳质组分是最主要的成分,其质量分数高达71.0%~84.5%. 其中,w(OC)为44.6%~72.0%,在怠速工况下最高;w(EC)则为8.6%~30.9%,在行驶工况下较高. 测试工程机械的PM2.5排放水平较高,因此应尽快加强工程机械排放的污染防治.

     

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