300MW煤粉锅炉砷排放特征的实验研究

被引:29
作者
郭欣
郑楚光
陈丹
机构
[1] 华中科技大学煤燃烧国家重点实验室
[2] 华中科技大学煤燃烧国家重点实验室 武汉
基金
国家自然科学基金重点项目;
关键词
煤; 砷; 烟气; 粒度; 飞灰;
D O I
10.13227/j.hjkx.2006.04.005
中图分类号
TK229.6 [燃煤锅炉];
学科分类号
080703 ;
摘要
对某台装备静电除尘装置的300MW燃煤电站锅炉的煤,底渣,电除尘器4个电场飞灰进行取样并测定了其中砷的含量.采用美国国家环保局推荐的EPA method 29方法测定了电除尘器后排放烟气中砷分布情况.结果表明,砷主要以飞灰形式排放,占到原煤总砷量84.6%,而底渣和烟气分别只占0.53%,2.16%.直接计算砷的质量平衡率为87.2%,电除尘器后烟道中以气相形式存在的砷为2.5μg/m3.飞灰中砷的含量与粒径密切相关,随着粒度的降低而升高.
引用
收藏
页码:631 / 634
页数:4
相关论文
共 9 条
[1]  
Speciation ofcombustion derived particulate phase arsenic. Hirsch M E,Sterling R O,Huggins F E,et al. Environ.Eng.Sci . 2000
[2]  
PM10and PM2.5:An internationalperspective. Lesley L S,Irene M S. Fuel Processing . 2000
[3]  
Arsenic and Mercury Partitioning inFly Ash at a Kentucky Power Plant. Tanaporn S,James C H. Energy and Fuels . 2003
[4]  
Submicrometer Particle Formation andControl in a Bench-scale Pulverized Coal Combustor. Ye Zhang,Pratim B. Energy and Fuels . 2001
[5]  
Quantitative assessment of worldwidecontamination of air,water,and soils by trace metals. Pacyna J M,Nriagu J O. Nature . 1988
[6]  
Laboratory study of traceelement vaporization from combustion of pulverized coal. Senior C L,Bool L E,Morency J R. Fuel Processing Technology . 2000
[7]  
Emissions of mercury,traceelements,and fine particles from stationary combustion source. Constance L S,Helble J J. Fuel Processing . 2000
[8]  
Vapour-phase Concentrations ofArsenic,Selenium,Bromine,Iodine and Mercury in the Stackof a Coal-fired Power Plant. Germani M S,Zoller W H. Environmental Science and Technology . 1988
[9]  
A model for the air emissions of trace metallicelements from coal combustors equipped with electrostaticprecipitators. Helble J J. Fuel Processing Technology . 2000