摘要
考察了燃用高灰(38.49%)高硫(3.47%)煤,并安装了选择性催化还原烟气脱硝(SCR)、石灰石-石膏湿法脱硫(WFGD)和静电除尘器(ESP)设施电厂的汞排放状况,以及烟气污染控制技术对烟气中汞形态和浓度的影响。结果表明,煤中灰分比例高导致锅炉出口烟气中颗粒汞(HgP)的比例明显高于气态汞;静电除尘器的协同脱汞效率高达80.56%,这主要由颗粒汞在烟气汞中所占比例决定;选择性催化还原烟气脱硝装置对烟气中汞形态和浓度的影响不明显;而石灰石-石膏湿法脱硫设施对烟气中汞的协同脱除效率仅为28.49%。
The mercury emission status of a power plant coal and installed with pollutant emission control devices burning high-sulfur including selective （3.47%） and high-ash （38.49%） catalytic reduction （SCR）, wet-flue gas desulphurization （WFGD） and electrostatic precipitator （ESP） was investigated control technologies on mercury forms and concentrations in flue gas discussed. , and the effects of pollution The results showed that the particulate mercury proportion was higher than gaseous mercury due to high ash in the coal. The mercury removal efficiency could reach up to 80.56% after flue gas passing through proportion in the flue gas. There was no significant effect of SCR on ESP, depending on the particulate mercury mercury forms and concentrations in the flue gas. In comparison, WFGD could remove only 28.49% of mercury.
出处
《环境工程技术学报》
CAS
2013年第1期53-58,共6页
Journal of Environmental Engineering Technology
基金
国家环境保护公益性行业科研专项(200909025
201009048)
关键词
汞
煤质
燃煤电厂
烟气污染控制技术
mercury
coal quality
coal-fired power plant
pollutant control technology
