引用本文:谢馨1,尹卫萍2.南京燃煤电厂烟气中汞的排放调查[J].环境监控与预警,2014,6(5):47-49
XIE Xin1,YIN Wei ping2.Ningjing Thermal Plant Boiler Flue Gas Mercury Emissions in the Survey[J].Environmental Monitoring and Forewarning,2014,6(5):47-49
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南京燃煤电厂烟气中汞的排放调查
谢馨1,尹卫萍21,2
1.南京市环境监测中心站,江苏 南京 210013;2.江苏省环境监测中心,江苏 南京 210036
摘要:
对南京市8家国控污染源13台(套)燃煤锅炉进行监测,结果表明,燃煤电厂烟气中汞主要以气相部分汞形态存在,其排放值均达标,为0.16~15.9 μg/m3,均远低于标准限值;煤质中汞含量与电厂烟气中汞浓度变化曲线的趋势是大致相似,相关系数为0.91;燃煤电厂机组容量、发电负荷越大,汞平均排放因子呈变小趋势;静电除尘器、湿法脱硫和选择性催化还原法的净化配置对汞的脱除效率最高,达到95.4%。
关键词:  燃煤电厂  锅炉    南京
DOI:
分类号:X831
基金项目:
Ningjing Thermal Plant Boiler Flue Gas Mercury Emissions in the Survey
XIE Xin1,YIN Wei ping21,2
1.Nanjing Environmental Monitoring Center,Nanjing,Jiangsu 210013,China;2.Jiangsu Environmental Monitoring Center,Nanjing,Jiangsu 210036,China
Abstract:
As Pollution sources 13 set of coal boilers in Ningjing were monitored,the results showed that meraury was mainly in gas phase in the coal-firedpower plant flue gas,the emission concentration was 0.16~15.9μg/m3,and was far lower than the standard limit;Curves trend of mercury content in coal andpower plant flue gas were roughly similar,the correlation coefficient is 0.91 ,theecoalfired power plant unit capacity,power load inversely affected the average mercury emission factors;Electrostator,wet desulfurization and purification with selective catalytic reductive reduction process configuration greatly contributed to renoval efficiency of mercury,up to 95.4%.
Key words:  Coal-fired power plants  Mercury  Emissions  Nanjing