烧结工艺颗粒物中水溶性离子排放特性分析

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摘要

采用荷电低压颗粒物撞击器（ELPI）对两段烧结工艺经除尘、脱硫后排放的颗粒物进行采样，分析颗粒物的粒数和质量浓度以及颗粒物中所含水溶性离子的粒径分布特征.结果表明，烧结工艺经除尘、脱硫后颗粒物的粒数浓度在10⁵～10⁷cm^-3，粒径小于0.1μm的颗粒物占总粒数浓度的67%～77%.颗粒物质量浓度呈双峰分布，烧结1分别在0.61μm和1.62μm处出现峰值，烧结2分别在0.37μm和1.62μm处出现峰值；对不同粒径段颗粒物中的水溶性离子进行分析后表明，烧结1排放的PM₁中含量最高的是NH₄⁺和Ca²⁺，分别为15.26%和14.84%；PM_>1中含量最高的是SO₄^2-，为33.52%.烧结2排放的PM₁中含量最高的是Cl^-，为28.12%；PM_>1中含量最高的是SO₄^2-，为29.21%.SO₄^2-在烧结1中主要集中在6.89～10.23μm这一粗粒径段中，占60%左右，而在烧结2中主要集中在粒径小于2.5μm的细粒径段颗粒物中，占81%左右.Cl^-在烧结1不同粒径段颗粒物中含量较低且分布较均匀，而在烧结2中Cl^-在0.13～0.24μm粒径段颗粒物中出现峰值且含量较高达45%左右.

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	孙英明
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关键词 ：烧结工艺, 颗粒物, 粒径分布, 水溶性离子

Abstract：

Electrical low pressure impactor (ELPI) was used to analyze the particulate matters size, mass concentration distribution and ions from two sintering processes after dust removal and desulfurization. Results showed that the grain number concentration of the particulate matters from the sintering process after dust removal and desulfurization was in the range of 10⁵~10⁷cm^-3, and 67%~77% particulate matters' particle sizes were mainly below 0.1μm. The mass concentration distribution showed double peaks. Two peaks respectively existed at 0.61μm and 1.62μm of particle size in No.1sintering process, while two peaks respectively existed at 0.37μm and 1.62μm of particle size in No.2 sintering process. Chemical composition analysis indicated that the highest content of water-soluble ions in PM₁ from No.1 sintering process were NH₄⁺ and Ca²⁺, which was 15.26% and 14.84%, respectively. The highest content of water-soluble ion in PM_>1 from No.1 sintering process was SO₄^2-, which was 33.52%. The highest content of water-soluble ions in PM₁ and PM_>1 from No.2 sintering process were Cl^- and SO₄^2-, which was 28.12% and 29.21%, respectively. 60% of SO₄^2- concentrated in the particulate matters of 6.89~10.23μm particle size in No.1sintering process, and 81% of SO₄^2- concentrated in the particulate matters with the particle size below 2.5μm in No.2 sintering process. The content of Cl^- in the particulate matters of different particle sizes distributes uniformly in No.1sintering process, and 45% of Cl^- concentrated in the particulate matters of 0.13~0.24μm particle size for a peak in No.2 sintering process.

Key words： sintering process particulate matters particle-size distribution water-soluble ions

收稿日期: 2016-01-05

X513

基金资助:

国家自然科学基金项目（21407081，41205089）；天津市科技计划项目（14ZCDGSF00029）

通讯作者: 吴建会,讲师,envwujh@nankai.edu.cn E-mail: envwujh@nankai.edu.cn

作者简介: 孙英明(1990-),男,河北承德人,南开大学硕士研究生,研究方向为大气污染防治.

引用本文:

孙英明, 吴建会, 马咸, 梁丹妮, 冯银厂. 烧结工艺颗粒物中水溶性离子排放特性分析[J]. 中国环境科学, 2016, 36(8): 2270-2274. SUN Ying-ming, WU Jian-hui, MA Xian, LIANG Dan-ni, FENG Yin-chang. Emission characteristics of water-soluble ions in the particulate matters from sintering process. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(8): 2270-2274.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2016/V36/I8/2270

[1]	朱李华,陶俊,陈忠明,等.2010年1月北京城区大气消光系数重建及其贡献因子[J]. 环境科学, 2012,33(1):13-19.
[2]	Brook R D, Rajagopalan S, Pope C A, et al. Particulate matter air pollution and cardiovascular disease: an update to the scientific statement from the American Heart Association[J]. Circulation, 2010,121(21):2331-2378.
[3]	Gu Z P, Feng J L, Han W L, et al. Diurnal variations of polycyclic aromatic hydrocarbons associated with PM2.5 in Shanghai, China[J]. Journal of Environmental Sciences, 2010,22(3):289-396.
[4]	Tie X, Wu D, Brasseur G. Lung cancer mortality and exposure to atmospheric aerosol particles in Guangzhou, China[J]. Atmospheric Environment, 2009,43(2):2375-2377.
[5]	Yin J. Particulate matter in the atmosphere: which particle properties are important for its effects on health[J]. The Science of the Total Environment, 2000,249(3):85-101.
[6]	韩剑宏.钢铁工业环保技术手册[M]. 北京:化学工业出版社, 2006.
[7]	马京华.钢铁企业典型生产工艺颗粒物排放特征研究[D]. 重庆:西南大学, 2009.
[8]	Goodarzi F. The rates of emissions of fine particles from some Canadian coal-fired power plants[J]. Fuel, 2006,85:425-433.
[9]	Lian Zhang, Yoshihiko Ninomiya. Emission of particulate matter (PM10) from coal combustion and its correlation with coal mineral properties[J]. Fuel, 2006,85(2):194-203.
[10]	Senior C L, Helble J J, Sarofim A F. Emissions of mercury, trace elements, and fine particles from stationary combustion sources[J]. Fuel Processing Technology, 2000,65(66):263-288.
[11]	Nielsen M T, Livbjerg H, Fogh C L, et al. Formation and emission of fine particles from two coal-fired power plants[J]. Combustion Science and Technology, 2002,174(2):79-113.
[12]	王书肖,赵秀娟,郝吉明,等.工业燃煤链条炉细粒子排放特征研究[J]. 环境科学, 2009,30(4):963-968.
[13]	范真真,赵亚丽,赵浩宁,等.高炉炼铁工艺细颗粒物PM2.5排放特性分析[J]. 环境科学, 2014,35(9):3287-3292.
[14]	张松松,路义萍,杜谦,等.工业锅炉PM2.5产排特性实验研究[J]. 环境科学学报, 2014,34(4):843-848.
[15]	李超,段雷,郝吉明,等.燃煤工业锅炉可吸入颗粒物的排放特征[J]. 环境科学, 2009,30(3):650-655.
[16]	商昱薇.层燃工业锅炉细颗粒物PM2.5排放特性研究[D]. 哈尔滨:哈尔滨工业大学, 2012.
[17]	GB/28662-2012钢铁烧结、球团工业大气污染物排放标准[S].
[18]	梁兴印,张玉凤,赵大琛,等.黑色金属冶炼行业PM2.5排放特性研究[J]. 实验技术与管理, 2013,30(9):43-46.
[19]	易红宏,段雷,郝吉明,等.电厂除尘设施对PM10排放特征影响研究[J]. 环境科学, 2006,27(10):1921-1927.
[20]	隋建才,徐明厚,丘纪华,等.燃煤锅炉PM10形成与排放特性的实验研究[J]. 工程热物理学报, 2006,27(2):335-338.
[21]	李彩霞,李彩婷,曾光明,等.长沙市夏季PM10和PM2.5中水溶性离子的污染特征[J]. 中国环境科学, 2007,27(5):599-603.
[22]	王明星.大气科学[M]. 北京:气象出版社, 1999:160-177.
[23]	郭兴明,郝吉明,段雷,等.大容量燃煤电站锅炉水溶性离子排放特征[J]. 清华大学学报, 2006,46(12):1991-1994.
[24]	程永新,曹佩.湿法烟气脱硫系统中"石膏雨"问题的分析及对策[J]. 电力建设, 2010,31(11):94-97.
[25]	Meij R. Trace element behavior in coal-fired power plants[J]. Fuel Process Technology, 2004,39:199-217.
[26]	Choong-Min Kang, Tarun Gupta, Pablo A, et al. Aged particles derived from emissions of coal-fired power plants: The TERESA field results[J]. Inhalation Toxicology, 2010,67(71)1-20.