High-sensitive monitoring of carbon monoxide in industry flue gases using tunable diode lasers

Zhi-rong Zhang; Feng-zhong Dong; Hua Xia; Guo-jie Tu; Bian Wu; Yu Wang

doi:10.1117/12.836230

31 August 2009 High-sensitive monitoring of carbon monoxide in industry flue gases using tunable diode lasers

Zhi-rong Zhang, Feng-zhong Dong, Hua Xia, Guo-jie Tu, Bian Wu, Yu Wang

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73823V (2009) https://doi.org/10.1117/12.836230
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

Carbon monoxide (CO) is a very important gas generated in the industrial process; therefore to implement CO concentration on-line monitoring is a key factor for industrial process control. Tunable diode laser absorption spectroscopy (TDLAS) is a high sensitive, high selective and fast trace gas detection technique. With the features of tunability and narrow linewidth of distributed feedback (DFB) laser and by precisely tuning its wavelength to a single isolated absorption line of the gas, TDLAS technique can be utilized to accurately perform online gas concentration monitoring with very high sensitivity. In this paper, a system for online monitoring of CO concentration is developed by our group employing TDLAS technique. The experimental results are present and discussed in this report. The characteristics of the system are: the sensitivity, 10ppm; detection accuracy, 0.02%; long term stability, 1%.

Citation Download Citation

Zhi-rong Zhang, Feng-zhong Dong, Hua Xia, Guo-jie Tu, Bian Wu, and Yu Wang "High-sensitive monitoring of carbon monoxide in industry flue gases using tunable diode lasers", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73823V (31 August 2009); https://doi.org/10.1117/12.836230

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