华电技术 ›› 2015, Vol. 37 ›› Issue (10): 51-53.

• 技术交流 • 上一篇    下一篇

烟气排放连续监测系统测点气相流场分析

  

  1. 1.华电天津军粮城发电有限公司,天津 300300;2.华电郑州机械设计研究院有限公司,郑州 450015;3.中国华电工程( 集团)有限公司环境保护分公司,北京 100160
  • 出版日期:2015-10-25

Gas flow field analysisof the continuous emission monitoring system(CEMS)measuring point

  1. 1.Huadian Tianjin Junliangcheng Power Generation Company Limited,Tianjin 300300,China2.Huadian Zhengzhou Mechanical Design Institute Company Limited,Zhengzhou 450015,China;3.China Huadian Engineering Company Limited Environmental Protection Branch,Beijing
    100160,China
  • Published:2015-10-25

摘要:

摘要:华电天津军粮城发电有限公司#9机组出口烟道烟气排放连续监测系统( CEMS) 测点前烟道直管段长度不符合HJ /T 75—2007《固定污染源烟气排放连续监测技术规范( 试行)》 的要求,提出了在CEMS测点前弯头处布置导流板的优化措施。优化后的数值模拟结果显示:CEMS测点处截面最大烟气流速约为23m/s,最小烟气流速约为19 m/s,截面烟气流速与标准的偏差约为6.4%( 小于标准要求的 7. 0% ) , 整个烟道的阻力仅增加 9 Pa,节能效果良好,可保证场地条件受限的电厂能满足环保监测的要求。

关键词: 关键词:烟气排放连续监测系统, 烟道, 直管段, 测点, 气相流场

Abstract:

Abstract:Since the front flue straight length of the outlet flue continuous emission monitoring system (CEMS) measuring point in unit 9 of Huadian Tianjin Junliangcheng Power Generation Company Limited does not meet the relative requirement in HJ/T 752007 Specifications for Continuous Emissions Monitoring of Flue Gas Emitted from Stationary Sources(On Trial),guide plate is installed at the elbow before CEMS measuring point as an optimized measure.The optimized numerical simulation results show that the section flue gas velocity at CEMS measuring point has a deviation of around 6.4% with the standard requirement (less than the standard deviation 7.0%),with a maximum value about 23m/s and a minimum value around 19m/s; while, the resistance of the entire flue only increases 9 Pa and the energy saving effect is good as well.Thus,this optimized measure enables the power plants with restricted site conditions to meet the environmental monitoring requirements.

Key words: ">Keywords:">continuous emission monitoring system (CEMS)">;">flue">;">straight length">;">measuringpoint">;">gas flow field