摘要
湿式电除尘器(WESP)在发达国家运用效果很好,为能够借鉴国外经验,促进我国电力行业PM2.5的减排,从湿式除尘器原理出发,对国内外应用情况进行了比较,对湿式电除尘器的技术经济进行了分析,并详细论证了湿式电除尘器对电力行业PM2.5的减排效果。国外的运行经验表明:WESP能够较好地减少细颗粒物PM2.5的排放,烟尘排放浓度可控制在10 mg/m3以下,酸雾去除率超过95%,对汞的控制效果也很明显。国内有几家电厂已成功投运或正在建设。监测数据表明,对一次PM2.5、SO3和Hg的去除率分别在85%、70%和60%左右。京津冀、长三角、珠三角的重点控制区中按2亿kW的煤电机组加装WESP测算,每年可减少PM2.5排放约63.8万t。
The wet electro static precipitator （WESP） has been used successfully in developed countries.In order to borrow the excellent experience abroad and promote the emission-reduction of PM2.5 from the power sector in China,the paper analyzes the principle of WESP,and compares the applications between China and abroad with the technical economics of WESP analyzed.In addition,the contribution of WESP to the reduction of PM2.5 from the power sector is also demonstrated in details.The foreign operation experience indicates that not only has the number of PM2.5 particles been decreased effectively,but also the dust emission concentration is controlled below 10 mg/m3 as well as over 95% of the acid fog removal rate and remarkable achievement on Hg control.WESP has been put into operation successfully or is being constructed in some power plants in China.The monitor data show that the removal rate of PM2.5,SO3 and Hg is about 85%,70% and 60% respectively.If WESP is installed in the 200-GW coal-fired generating units in the key pollutant control regions of Beijing-Tianjin-Hebei area,Yangtze River Delta and Pearl River Delta,638 thousand tons of PM25 can be reduced annually
出处
《中国电力》
CSCD
北大核心
2013年第11期62-65,共4页
Electric Power
基金
国家科技支撑计划资助项目(2012BAC20B1003)
环保公益性行业科研专项(201209001)
