1000MW燃煤机组脱硝装置CEMS采样方式的改进措施

Improvement of CEMS sampling methods in 1000 MW coal-fired units denitrification system

由于大型燃煤机组脱SCR反应器出口NO x浓度分布不均匀,而烟气排放连续监测系统(以下简称CEMS)单测点的采样方式不具有代表性,容易造成监测数据的偏差,必须对原有CEMS采样方法加以改进。提出一种新的采样方法,该方法增加费用低,能有效的提高CEMS监测数据的准确性,更能真实反映脱硝装置的实际运行情况。

Due to NOx concentration uneven distribution in large -scale coal- fired power plant units SCR system outlet,the CEMS single sampling point is not representative, easily to cause the error of the monitoring data. The original CEMS sampling methods must to be improved. It presents a new sampling method. The method can in- crease low - cost and effectively improve the accuracy of CEMS monitoring data. It can reflect the actual opera- tion of denitrification system.