| 静电除尘器和湿法烟气脱硫装置对烟气汞形态的影响与控制 |
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| 引用本文： | 胡长兴,周劲松,何胜,张乐,郑剑铭,骆仲泱,岑可法.静电除尘器和湿法烟气脱硫装置对烟气汞形态的影响与控制[J].动力工程,2009,29(4). |
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| 作者姓名： | 胡长兴 周劲松 何胜 张乐 郑剑铭 骆仲泱 岑可法 |
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| 作者单位： | 胡长兴,HU Chang-xing(浙江大学,宁波理工学院,宁波,315100);周劲松,何胜,张乐,郑剑铭,骆仲泱,岑可法,ZHOU Jin-song,HE Sheng,ZHANG Le,ZHENG Jian-ming,LUO Zhong-yang,CEN Ke-fa(浙江大学,能源清洁利用国家重点实验室,杭州,310027)
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| 基金项目： | 国家自然科学基金，国家重点实验室开放基金 |
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| 摘 要： | 利用安大略标准方法和在线汞监测技术对6套典型燃煤电站锅炉静电除尘器(ESP)和湿法烟气脱硫(WFGD)装置前后烟气汞的浓度及形态进行了测试,并研究了2种装置对烟气汞形态转化的影响及其汞控制能力.结果表明:ESP对飞灰的捕获直接降低了烟气中颗粒汞的比例,从已测试的典型燃煤锅炉来看,ESP前的燃煤烟气中颗粒汞的平均比例在30%左右,经ESP后颗粒汞所占比例降至5%左右;经WFGD装置洗涤后,烟气中汞的形态发生了较大的改变,二价汞基本被捕获,进入WFGD装置的烟气中二价汞的比例越高,WFGD装置对烟气汞的脱除效率也越高.配置有选择性催化还原(SCR)脱硝装置+ESP+WFGD尾部烟气处理装置的燃煤电厂,能够很好地控制燃煤烟气汞的排放.
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| 关 键 词： | 燃煤 汞 静电除尘 湿法脱硫 形态 控制 |
Influence and Control of Electrostatic Precipitators and Wet Flue Gas Desulfurization Systems on the Speciation of Mercury in Flue Gas |
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| HU Chang-xing,ZHOU Jin-song,HE Sheng,ZHANG Le,ZHENG Jian-ming,LUO Zhong-yang,CEN Ke-fa.Influence and Control of Electrostatic Precipitators and Wet Flue Gas Desulfurization Systems on the Speciation of Mercury in Flue Gas[J].Power Engineering,2009,29(4). |
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| Authors: | HU Chang-xing ZHOU Jin-song HE Sheng ZHANG Le ZHENG Jian-ming LUO Zhong-yang CEN Ke-fa |
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| Affiliation: | 1;1.Ningbo Institute of Technology;Zhejiang University;Ningbo 315100;China;2.State Key Lab of Clean Energy Utilization;Hangzhou 310027;China |
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| Abstract: | Tests were carried out for the concentration and speciation of mercury in the flue gas before and after 6 sets of typical electrostatic precipitator(ESP) and wet flue gas desulfurization(WFGD) system of coal fired power stations by use of Ontario Hydro method and on-line mercury monitoring technology.The influence and control ability of the two devices on speciation transformation of mercury in the flue gas were also studied.Results show that collection of fly ash by ESP directly decreases the proportion of... |
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| Keywords: | coal-fired mercury ESP WFGD speciation control |
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