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我国典型钢铁行业主要工艺环节排放颗粒物源成分谱特征
摘要点击 149  全文点击 71  投稿时间:2018-04-02  修订日期:2018-05-14
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中文关键词  钢铁行业  PM2.5  PM10  源成分谱  工艺源
英文关键词  iron and steel industry  PM2.5  PM10  source profile  process sources
作者单位E-mail
温杰 南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071 wj9312@hotmail.com 
杨佳美 南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071  
李蒲 武汉市环境监测中心, 武汉 430015  
郁佳 武汉市环境监测中心, 武汉 430015  
吴建会 南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071 envwujh@nankai.edu.cn 
田瑛泽 南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071  
张进生 南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071  
史国良 南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071  
冯银厂 南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071  
中文摘要
      鉴于我国钢铁行业排放颗粒物源成分谱数量不足,有待更新的现状,致力于服务精细化颗粒物源解析的需求,采用稀释通道系统对武汉市某钢铁公司的3个主要工艺环节(烧结、炼钢、炼铁)排放源进行了采样.构建了3类PM2.5源成分谱及3类PM10成分谱,对源谱主要化学组分特征进行了研究,并与国内其他区域已有的钢铁行业源谱研究进行了对比.结果表明:①烧结工艺源成分谱中,SO42-、Al和NH4+等含量高,PM2.5源谱中质量分数依次为22.2%、4.5%和3.5%,PM10源谱中依次为36.0%、5.2%和2.7%,炼铁工艺Fe元素含量最高,在PM2.5源谱和PM10源谱中分别达到28.3%和24.5%,炼钢工艺源谱Ca、Fe元素等为主要组分;②元素组分中,烧结工艺S元素含量最高,地壳元素在PM10源谱中含量更高,炼铁工艺Pb、Cr等重金属含量偏高,炼钢工艺Cr富集;③源谱之间分歧系数的计算显示,同类工艺粗细粒径源谱相似性偏高,烧结工艺与其他两类工艺源谱之间差异性较高,炼钢工艺与炼铁工艺差异性较低.同国内其他区域研究源谱相比,发现Fe、Si和Ca等为钢铁行业排放颗粒物中标识性组分,而碳组分和SO42-等组分特征随生产方式、除污设备等不同表现出不同特征.
英文摘要
      Considering the lack of numbers and updates of particulate matter (PM) source profiles, which show PM emitted from the Chinese iron and steel industry, a dilution tunnel system was used to sample PM discharged from the three main processes (sintering, puddling, and steelmaking) of an iron and steel company in Wuhan, China. Six source profiles for fine and coarse PM were established, and their characteristics were researched. The main conclusions were as follows:① For the sintering source profiles, SO42-, Al, and NH4+ were the dominant components, with mass fractions of 22.2%, 4.5%, and 3.5% in the PM2.5 profile and 36.0%, 5.2%, and 2.7% in the PM10 profile, respectively. Fe was abundant in puddling source profiles, the mass fractions of which reached 28.3% and 24.5% for PM2.5 profile and PM10 profile, respectively. As for steelmaking, the main components were Ca and Fe. ② For the element component features, S was enriched in the sintering source profiles. Metal elements, such as Pb and Cr, were more abundant in the puddling source profiles. ③ The coefficients of divergence for profiles were calculated. Profiles of different sizes for the same processes showed similarities, whereas the diversities between the sintering and the other two profiles were higher. 4 Compared with research in other regions, similarities and differences were found and analyzed.

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