烟气组分浓度实时连续监测系统  

Real-Time Continuous Monitoring System of Flue Gas Concentration

作　　者：孙长库[1] 李树珉[1] 刘斌[1] 赵玉梅[2] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072 [2]天津市蓝宇科工贸有限公司,天津300384

出　　处：《光学与光电技术》2009年第1期47-50,共4页Optics & Optoelectronic Technology

摘　　要：采用紫外差分吸收光谱法对工业生产所排放的烟气(SO_2、NO_x等)浓度进行实时连续监测,为使现场光路调整更加方便,设计了单边插入式四自由度调整探头,有效地提高光耦合效率。研究了光谱自适应算法,根据所接收到的光谱强度,自动调整光谱仪积分时间,延长了光源的使用寿命。将所研制的系统进行了现场应用实验,SO_2、NO的测量误差小于±2%。The UV differential optical absorption spectroscopy （DOAS） is adopted to monitor the concentration of flue gas real-timely and continuously, such as SO2, NOx, etc, exhausted by industrial production. To adjust the optical path more conveniently on site, a new single plug-in double-sided probe is designed. It effectively improves the optical coupling efficiency. The spectrum self-adaptive algorithm is studied as well. It automatically changes the integral time of the spectrometer according to the input spectral intensity, and it prolongs the service life of the light source. The practical application experiments show that the developed system is stable and reliable. The relative measurement errors on the concentration of SO2 and NO are less than ± 2 %.

关 键 词：烟气组分浓度 差分光学吸收光谱 光谱测量 单边探头 光谱自适应算法 

分 类 号：TN247[电子电信—物理电子学]