中文摘要：

为了解燃煤电厂烟气中汞的排放特征,选择江苏省5个地区的7家燃煤电厂,基于美国EPA 30B方法进行现场采样,分析煤中汞含量、机组容量和不同处理设施等对烟气中汞排放的影响。结果表明,煤中汞含量与电厂烟气中汞排放浓度的相关性不强,不起决定性作用;机组容量与烟气中汞排放浓度呈极显著负指数关系（P〈0.01）。采用循环流化床锅炉燃烧方式且配置静电除尘器的电厂烟气中汞的脱除效率（98.9%）明显高于煤粉炉配置静电除尘器和石灰石-石膏湿法脱硫装置的脱除效率（67.5%~81.6%）。循环流化床并配置静电除尘器装置对电厂烟气中汞的脱除更有利。

英文摘要：

To better understand characteristics of the system of emission of mercury with fume from coal.burning powerplants, seven coal.burning power plants located in five different regions in Jiangsu Province were selected for in.situ sam.pling according to the USA EPA 30B approach for analysis of effects of mercury concentration in coal, generating units ca.pacity and emission control facilities on the emission of mercury with fume. Results show that Hg concentration in the fumeis not very much related to Hg content in the coal, but in significant negative exponential relation to the generating unitscapacity （P〈0. 01）. It seems that the use of circulating fluidized bed boilers coupled with electrostatic precipitators is veryefficient in removing mercury from the fume emitted from coal.burning power plants, reaching up to 98.. 9% in mercury re.moval efficiency, much higher than the efficiency of the use of the pulverized coal furnaces couples with electrostatic pre.cipitators and lime.gypsum wet desulfurization equipment （67. 5%-81. 6%）. It is, therefore, concluded that the technolo.gy of circulating fluidized bed boiler coupled with electrostatic precipitator is more efficient in removing mercury in fume e.mitted from coal.burning power plants.