摘要
HCl气体是垃圾焚烧排放的污染气体之一,不仅能够对焚烧设备和监测仪器造成腐蚀,而且会对人体产生危害。对HCl浓度进行有效在线监测关系到焚烧设备的使用和监测仪器的运行。基于可调谐半导体激光吸收光谱(TDLAS)技术,研发出一种在线监测HCl浓度的激光气体分析仪。通过实验室测试可知,基于TDLAS技术的激光气体分析仪线性误差不高于±1%F.S且具有很好的稳定性指标。该气体分析仪在垃圾焚烧烟气排放处的应用,表明1.742μm吸收谱线能够进行HCl浓度的检测。该分析仪具有不受背景气体交叉干扰、不受粉尘与视窗污染影响、响应速度快以及可靠性高等优点。
HCl gas is one of the waste incineration emissions. It does not only corrode the incineration equipment and monitoring instrument, but also harms human health. Effective online monitoring of the HCl gas concentration ensures normal use of the incineration equipment and function of the monitoring instrument. An online HCl concentration analyzer based on tunable diode laser absorption spectroscopy （TDLAS） is presented. The laboratory tests show that the linearity error of the analyzer is not higher than ± 1% F.S and the stability of the analyzer is good. The analyzer has been successfully applied to the exhaust vent of a waste incineration equipment for continuous monitoring. The results show that the 1.742 μm absorption spectrum can be used to measure HCl concentration. The analyzer has the advantages of short response time, high reliability and the measurement does not be interfered by background gas, dust and window stains.
出处
《激光与光电子学进展》
CSCD
北大核心
2015年第11期44-49,共6页
Laser & Optoelectronics Progress
关键词
大气光学
可调谐半导体激光吸收光谱
HCl监测
垃圾焚烧
atmospheric optics
tunable diode laser absorption spectroscopy
HCl monitoring
waste incineration
