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4种重要因素对柴油机颗粒物排放因子的量化影响研究
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作者 金陶胜 胡杰 +4 位作者 李振国 陆凯波 赵帅 刘双喜 刘卫林 《环境科学学报》 CSCD 北大核心 2018年第12期4630-4635,共6页
在发动机台架测试基础上,按照发动机排放阶段、油品种类、后处理装置和运行工况4种因素的不同,进行了24组测试,研究了颗粒物排放因子.同时,应用单因素敏感性分析,探究了发动机排放阶段和油品种类对颗粒物排放因子的影响;并运用多元线性... 在发动机台架测试基础上,按照发动机排放阶段、油品种类、后处理装置和运行工况4种因素的不同,进行了24组测试,研究了颗粒物排放因子.同时,应用单因素敏感性分析,探究了发动机排放阶段和油品种类对颗粒物排放因子的影响;并运用多元线性回归分析,探讨了4种因素对颗粒物排放因子的影响力大小排序.结果显示:24组柴油机测试的颗粒物排放因子均值为(21.9±24.5)mg·kWh^-1;使用国V排放标准柴油机的颗粒物排放因子((14.7±5.6)mg·kwh^-1)比国Ⅳ排放标准柴油机((19.4±16.4)mg·kwh^-1)有所下降;国Ⅳ柴油、国V柴油和混合柴油的颗粒物排放因子平均值分别为120.0、(11.8±1.0)和(11.5±1.3)mg·kwh^-1,混合柴油颗粒物排放因子与国V柴油相近,两者相比国Ⅳ柴油有明显下降;油品种类是影响颗粒物排放因子的第一大因素,后处理是影响颗粒物排放因子的第二大因素. 展开更多
关键词 柴油机 颗粒物排放 油品 后处理 多元线性回归
国Ⅳ柴油机颗粒物与颗粒态多环芳烃排放特征 预览 被引量:4
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作者 陆凯波 刘双喜 +2 位作者 李振国 葛卫华 金陶胜 《中国环境科学》 EI CAS CSCD 北大核心 2016年第2期376-381,共6页
针对一台轻型柴油机,采用国Ⅳ柴油,在不使用和使用后处理装置的条件下,进行ESC循环工况(分别记为ESC-0、ESC-DP)和ETC循环工况(分别记为ETC-0、ETC-DP)下的发动机台架测试.每次测试用一对滤膜采集颗粒物,采样前后分别称重以确定颗... 针对一台轻型柴油机,采用国Ⅳ柴油,在不使用和使用后处理装置的条件下,进行ESC循环工况(分别记为ESC-0、ESC-DP)和ETC循环工况(分别记为ETC-0、ETC-DP)下的发动机台架测试.每次测试用一对滤膜采集颗粒物,采样前后分别称重以确定颗粒物质量,进而计算排放因子.用气相色谱-质谱联机(GC-MS)分别分析每张滤膜上颗粒物的多环芳烃(PAHs)组分.ESC-0、ESC-DP、ETC-0、ETC-DP的颗粒物排放因子分别为0.12,0.05,0.48,0.16 g/(k W?h);相应的PAHs排放因子分别为69,35,174,76μg/(k W?h).后处理分别使颗粒物和PAHs减排56%-68%和49%-56%.总PAHs中,三环PAHs占比重最大(64%±9%).PHE在总PAHs中占比重最大(54%±9%).PAHs的分布与其物理化学特性、柴油中的芳烃含量有关.PAHs特征比值FA/(FA+PY)为0.37-0.51. 展开更多
关键词 国Ⅳ柴油机 后处理装置 台架测试 颗粒物 多环芳烃 特征比值
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PM10 emissions from industrial coal-fired chain-grate boilers
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作者 Xinghua Li Junzan Han Lei Duan 《中国环境科学与工程前沿:英文版》 SCIE EI CAS CSCD 2017年第6期171-178,共8页
PM2.5 in China: Measurements, sources, visibility and health effects, and mitigation 被引量:1
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作者 David Y.H.Pui Sheng-Chieh Chen Zhili Zuo 《中国颗粒学报:英文版》 SCIE EI CAS CSCD 2014年第2期1-26,共26页
Concern over the health effects of fine particles in the ambient environment led the U.S. Environmental Protection Agency to develop the first standard for PM2.5(particulate matter less than 2.5 jxm) in 1997. The Part... Concern over the health effects of fine particles in the ambient environment led the U.S. Environmental Protection Agency to develop the first standard for PM2.5(particulate matter less than 2.5 jxm) in 1997. The Particle Technology Laboratory at the University of Minnesota has helped to establish the PM2.5 standard by developing many instruments and samplers to perform atmospheric measurements. In this paper, we review various aspects of PM2.5, including its measurement, source apportionment, visibility and health effects, and mitigation. We focus on PM2.5 studies in China and where appropriate, compare them with those obtained in the U.S. Based on accurate PM2.5 sampling, chemical analysis, and source apportionment models, the major PM2.5 sources in China have been identified to be coal combustion, motor vehicle emissions, and industrial sources. Atmospheric visibility has been found to correlate well with PM2.5concentration. Sulfate, ammonium, and nitrate carried by PM2.5, commonly found in coal burning and vehicle emissions, are the dominant contributors to regional haze in China. Short-term exposure to PM2.5 is strongly associated with the increased risk of morbidity and mortality from cardiovascular and respiratory diseases in China. The strategy for PM2.5 mitigation must be based on reducing the pollutants from the two primary sources of coal-fired power plants and vehicle emissions. Although conventional Particulate Emission Control Devices(PECD) such as electrostatic precipitators in Chinese coal-fired power plants are generally effective for large particles, most of them may not have high collection efficiency of PM2.5.Baghouse filtration is gradually incorporated into the PECD to increase the PM2.5 collection efficiency.By adopting stringent vehicle emissions standard such as Euro 5 and 6, the emissions from vehicles can be gradually reduced over the years. An integrative approach, from collaboration among academia,government, and industries, can effectively manage and mitigate the PM2.5 pollution in C 展开更多
关键词 大气测量 知名度 PM2 5 中国 汽车尾气排放标准 健康 机动车排放 燃煤发电厂
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