摘要
介绍一种基于紫外差分吸收光谱(DOAS)技术,高温全程伴热的超低量程烟气连续监测系统(CEMS-2000L)。其技术指标达到:量程100 mg/m3,线性误差≤±1%FS,24 h零点漂移、量程漂移≤±2%FS,响应时间<110 s。将该系统应用于超低排放污染源现场,并且与非分散红外仪表进行比对测试。比对结果显示:测量值与参比方法的绝对误差小于3 mg/m^3,表明高温抽取式紫外DOAS技术适用于固定污染源超低排放的检测需求。
In the face of the increasingly serious air pollution,the environmental protection department proposed an ultralow emission plan of coal-fired power plants and a series of corresponding standards.This paper presents an UV gas continuous emission monitoring system which was constructed based on differential optical absorption spectroscopy(DOAS)in high temperature with heat traced pipeline.Its technical indicators were as follows:measuring range was 100 mg/m 3,linear error≤±1%FS,deviation at zero point and span point in 24 h was≤±2%FS,response time was<110 s.The system was put into the application in ultralow emission plant and compared with the other gas analyzer on non-dispersive infrared method.The results showed that the absolute error was less than 3 mg/m 3.It indicated that this system was very suitable for ultralow emission of stationary pollution monitored.
作者
李峰
张亮
李杰
LI Feng;ZHANG Liang;LI Jie(Zibo Environmental Monitoring Center,Zibo 255000,China)
出处
《计测技术》
2018年第1期28-31,共4页
Metrology & Measurement Technology
