摘要
在小型实验台上研究了NO对汞形态的影响。结果表明:在不含HC1气体的模拟烟气中,加入NO后转化率明显增加;较高浓度的NO会引起汞转化率下降但仍高于无NO的体系;随反应温度的升高汞的转化率逐渐降低;SO2的存在引起汞转化率升高。在含HC1的模拟烟气中,随反应温度的升高汞的转化率升高;SO2的存在引起汞转化率下降;NO的存在会提高汞的转化率。在一般烟气体系中, HC1可以促进汞的氧化;较高的O2浓度也可以促进汞的氧化。
A bench-scale experimental is conducted to study effects of NO on the speciation distribution of mercury in coal-fired flue gases. The test method used here for mercury speciation was Ontario Hydro Method. The speciation distribution of mercury in different coal-fired flue gas systems was studied in typical constituent flue gas systems. The conclusions are as follows: In the coal-fired flue gas systems without HC1, the conversion ratio of Hg2+ to total Hg will become lower with reaction temperature becoming higher; O2, NO and SO2 can slightly praise the conversion ratio of Hg2+ to total Hg. In the coal-fired flue gas systems containing HC1, the conversion ratio of Hg2+ to total Hg will become higher at elevated temperature; SO2 can decrease the conversion ratio of Hg2+ to total Hg; HC1, NO, O2 can enhance oxidation of Hg vapor.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2004年第6期1057-1060,共4页
Journal of Engineering Thermophysics
基金
国家高技术研究发展计划项目(No.2001AA529040)
国家重点基础研究发展规划项目(No.G1999022212-08)
关键词
一氧化氮
汞
形态
煤
烟气
NO
mercury
speciation
coal
flue gas
