华电技术 ›› 2018, Vol. 40 ›› Issue (8): 69-71.

• 节能与环保 • 上一篇    下一篇

烟气连续排放监测系统优化改造

  

  1. 大唐环境产业集团股份有限公司许昌项目部,河南许昌〓461670
  • 出版日期:2018-08-25 发布日期:2018-09-20

Optimization and reform of flue gas continuous emission monitoring system

  1. Xuchang Project Department, Datang Environmental Industry Group Company Limited, Xuchang 461670, China
  • Online:2018-08-25 Published:2018-09-20

摘要:

某电厂2×660MW机组超低排放改造后, #4机组脱硫电耗比 #3机组高0.2~0.3百分点。通过分析,确定 #4机组脱硫电耗高的原因是净烟道烟气流场不均匀、烟气连续排放监测系统(CEMS)测量不准确,针对分析结果,采取了增加导流板、重新选取合理的取样位置、加长取样探杆等措施。改造后,CEMS测量精度明显提高,能够满足运行监控和环保监测精度的要求,节能降耗明显。

关键词:

Abstract:

After the ultralow emission reform on 2×660MW units in a power plant, the power consumption for desulfurization of the #4 unit is 0.2~0.3 percentage point higher than that of the #3 unit. Through analysis, it is determined that the high power consumption for desulfurization of the #4 unit is caused by the uneven gas flow field in the clean gas pipe and the inaccurate measurement of the flue gas by continuous emission monitoring system (CEMS). According to the analysis results, the baffle is added, reasonable sampling position is reselected and sampling probe is prolonged. After the reform, the measurement accuracy of CEMS is obviously improved, which can meet the requirements of operational monitoring and environmental monitoring. Energy saving and consumption reduction is obvious.

Key words: