| 长三角地区中小燃煤锅炉PM2.5成分谱特征 |
| 摘要点击 2117 全文点击 721 投稿时间：2017-07-05 修订日期：2017-09-14 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 燃煤锅炉 PM2.5 排放因子 化学成分谱 去除效率 |
| 英文关键词 coal-fired boilers PM2.5 emission factor chemical composition removal efficiency |
| 作者 | 单位 | E-mail | | 徐健 | 东华大学环境科学与工程学院, 上海 201620 | xujian113@126.com | | 黄成 | 上海市环境科学研究院, 上海 200233
国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | huangc@saes.sh.cn | | 李莉 | 上海市环境科学研究院, 上海 200233
国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | | | 陈勇航 | 东华大学环境科学与工程学院, 上海 201620 | | | 楼晟荣 | 上海市环境科学研究院, 上海 200233
国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | | | 乔利平 | 上海市环境科学研究院, 上海 200233
国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | | | 王鸿宇 | 东华大学环境科学与工程学院, 上海 201620 | |
|
| 中文摘要 |
| 选取7台中小燃煤锅炉，分析其排放的烟气中PM2.5的排放因子、成分谱特征和除尘设施对不同粒径段的PM2.5、OC、EC的去除效率.研究发现：除尘设施出口处的PM2.5质量排放因子在0.047~0.283 g·kg-1之间，平均为（0.146±0.081）g·kg-1.SO42-在离子组分中的含量最为丰富，其次为NH4+和Ca2+；S在元素组分中的含量最为丰富，其次为Al、Ca、Fe；OC、EC的含量波动幅度较大，各锅炉产生的OC和EC比值均大于1.在所测粒径的范围内，PM2.5的质量浓度呈单峰或双峰分布，峰值点出现在0.07~0.12 μm处和1 μm以上（双峰时）；OC的粒径分布呈双峰或三峰的特征，峰值点分别出现在0.04 μm和0.20~0.31 μm处和1 μm以上（三峰时）.除尘设施对PM2.5、OC、EC质量浓度的整体去除效率分别为66%、53%和23%. |
| 英文摘要 |
| Seven small and medium coal-fired boilers were selected to analyze the emission factors and chemical composition characteristics of PM2.5, and the efficiency of the dust collection unit in removing PM2.5, OC, and EC of different particle sizes. At the outlet of the dust collection unit, PM2.5 mass emission factor was around 0.047-0.283 g·kg-1 with an average of (0.146±0.081) g·kg-1. SO42- was the most abundant ionic component, followed by NH4+ and Ca2+. S was the most abundant among all the elements, followed by Al, Ca, and Fe. The contents of OC and EC fluctuated greatly, and the ratio of OC and EC produced by each boiler was greater than one. In the range of the measured particle sizes, the mass concentration of PM2.5 showed a singlet or bimodal distribution, and the peak value appeared at 0.07-0.12 μm and greater than 1 μm in bimodal distribution. The mass concentration of OC showed a bimodal or trimodal distribution, and the peak value appeared at 0.04 μm, 0.20-0.31 μm, and greater than 1 μm in trimodal distribution. The efficiencies of the dust collection unit in removing PM2.5, OC, and EC were 66%, 53%, and 23%, respectively. |
|
|
|
