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  

Chemical Source Profiles of PM Emitted from the Main Processes of the Iron and Steel Industry in China

作　　者：温杰 杨佳美[1] 李蒲 郁佳 吴建会[1] 田瑛泽[1] 张进生[1] 史国良[1] 冯银厂[1] WEN Jie1, YANG Jia-mei1,LI Pu2, TIAN Ying-ze1,ZHANG Ying-ze1,ZHNAG Jin-sheng1,SHI Guoliang1,FENG Yin-chang1(1. State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China; 2. Wuhan Environmental Monitoring Center, Wuhan 430015, China)

机构地区：[1]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 [2]武汉市环境监测中心,武汉430015

出　　处：《环境科学》2018年第11期4885-4891,共7页Environmental Science

基　　金：国家自然科学基金项目(41775149);中央高校基本科研业务费专项

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PM_(2.5)源成分谱及3类PM_(10)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,SO_4^(2-)、Al和NH_4^+等含量高,PM_(2.5)源谱中质量分数依次为22. 2%、4. 5%和3. 5%,PM_(10)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PM_(2.5)源谱和PM_(10)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PM_(10)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SO_4^(2-)等组分特征随生产方式、除污设备等不同表现出不同特征.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,SO4^2-,Al,and NH4^＋ were the dominant components,with mass fractions of 22. 2%,4. 5%,and 3. 5% in the PM（2.5） profile and36. 0%,5. 2%,and 2. 7% in the PM（10） profile,respectively. Fe was abundant in puddling source profiles,the mass fractions of which reached 28. 3% and 24. 5% for PM（2.5） 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.

关 键 词：钢铁行业 PM2.5 PM10 源成分谱 工艺源 

分 类 号：X513[环境科学与工程—环境工程]