摘要
通过对我国4座燃煤电厂5台不同容量机组的石灰石-石膏湿法脱硫(WFGD)系统进、出口烟气中颗粒物的实测,计算各电厂湿法脱硫系统对颗粒物的去除效果,并分析其排放特征。结果表明:WFGD系统对烟气中总颗粒物的去除效率介于46.00%~61.70%之间,有较好的去除效果;对PM1的去除效率介于-12.61%^-1.58%之间,对PM2.5的去除效率介于-2.02%~8.50%之间,对PM10的去除效率介于42.63%~58.68%之间,对PM2.5及更小的亚微米颗粒的去除作用非常有限且波动较大,工况不佳易出现逆增长现象。
Four representative coal-fired power plants were selected and monitored for particles emission between before and after limestone-gypsum WFGD. The removal efficiencies can be calculated based on the monitoring results and the emission characteristics can be analyzed. After the WFGD procedure,the total dust removal efficiency ranged from 46. 00% to 61. 70%,while the PM1 removal rate was- 12. 61% ^- 1. 58%,the PM2. 5- 2. 02% ~ 8. 50% and the PM1042. 63% ~ 58. 68%. The results showed that the WFGD system has a stable and efficient removal capability to dust particles,but just a little bit effect to PM2. 5or less in diameter.
出处
《环境监测管理与技术》
CSCD
2015年第5期21-24,共4页
The Administration and Technique of Environmental Monitoring
基金
国家能源局国能科技"<火电厂烟气中PM2.5的监测技术规范>制定"基金资助项目([2013]235号)
关键词
湿法脱硫
颗粒物
去除效果
煤电机组
烟气
WFGD
Particulate matters
Dust removal efficiency
Coal-fired units
Flue gas fume
