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基于国内实测燃煤电厂烟气汞排放估算的不确定度

支国瑞 薛志钢 李 洋 马京华 刘 妍 孟 凡 柴发合

支国瑞, 薛志钢, 李 洋, 马京华, 刘 妍, 孟 凡, 柴发合. 基于国内实测燃煤电厂烟气汞排放估算的不确定度[J]. 环境科学研究, 2013, 26(8): 814-821.
引用本文: 支国瑞, 薛志钢, 李 洋, 马京华, 刘 妍, 孟 凡, 柴发合. 基于国内实测燃煤电厂烟气汞排放估算的不确定度[J]. 环境科学研究, 2013, 26(8): 814-821.
ZHI Guo-rui, XUE Zhi-gang, LI Yang, MA Jing-hua, LIU Yan, MENG Fan, CHAI Fa-he. Uncertainty of Flue Gas Mercury Emissions from Coal-Fired Power Plants in China Based on Field Measurements[J]. Research of Environmental Sciences, 2013, 26(8): 814-821.
Citation: ZHI Guo-rui, XUE Zhi-gang, LI Yang, MA Jing-hua, LIU Yan, MENG Fan, CHAI Fa-he. Uncertainty of Flue Gas Mercury Emissions from Coal-Fired Power Plants in China Based on Field Measurements[J]. Research of Environmental Sciences, 2013, 26(8): 814-821.

基于国内实测燃煤电厂烟气汞排放估算的不确定度

基金项目: 国家自然科学基金项目(41173121);国家环境保护公益性行业科研专项(200909024,201209007)

Uncertainty of Flue Gas Mercury Emissions from Coal-Fired Power Plants in China Based on Field Measurements

  • 摘要: 参照测量不确定度评定与表示的国家技术规范,基于近年来我国燃煤电厂常规污控设备协同脱汞的现场测试数据(文献报道和实测值)及各省原煤w(汞)的实测值,初步构建了国内燃煤电厂烟气汞排放不确定度的计算方法,并以2010年的燃煤量、污控方式布局为基础,计算了该年度汞排放的不确定度. 结果表明:2010年我国燃煤电厂烟气汞排放的总不确定度为48.8t,占平均排放总量的34.3%;其中60.2%源于污控设备脱汞效率的不确定度,39.8%源于原煤w(汞)的不确定度;采用ESP(静电除尘)、ESP+WFGD(静电除尘+湿法脱硫)、SCR+ESP+WFGD(选择性催化还原脱硝+静电除尘+湿法脱硫)和FF(袋式除尘)大气污控组合的机组各存在6.0、32.2、9.7和0.9t的烟气汞排放不确定度,分别占各对应机组烟气汞排放量的19.3%、32.8%、84.6%和53.6%,其中SCR+ESP+WFGD污控组合烟气汞排放的相对不确定度最大. 随着我国烟气脱硝工作全面推行,2015年以后,SCR+ESP+WFGD污控措施(组合)的机组所占比例将会提高到66%以上,如果仍以现有数据为基础,则来自SCR+ESP+WFGD污控措施(组合)机组的烟气汞排放不确定度将会大幅增加,因此急需增加对该类装置脱汞效率的实测样本数量.

     

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  • 收稿日期:  2013-01-30
  • 修回日期:  2013-05-30
  • 刊出日期:  2013-08-25

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