Abstract：As one of the materials in organic chemical industry, acetylene has been used in many aspects of chemical industry. But acetylene is a very dangerous inflammable and explosive gas, so it needs in-situ monitoring during industrial storage and production. Tunable diode laser absorption spectroscopy (TDLAS) technology has been widely used in atmospheric trace gases detection，because it has a lot of advantageous characteristics，such as high sensitivity, good selectivity, and rapid time response. The distribution characteristics of absorption lines of acetylene in near infrared band were studied, and then the system designing scheme of acetylene on-line monitoring based on near infrared tunable diode laser absorption spectroscopy technology was discussed in detail. Moreover, the system of experiment measurement was set up and the method of signal detection and the algorithm of concentration inversion were studied. In addition, the sample cell with a path length of 10 cm, and the acetylene of different known concentrations were measured. As a result, the detection limit obtained reached 1.46 cm3·m-3. Finally the dynamic detection experiment was carried out, and the measurement result is stable and reliable, so the design of the system is practicable through experiment analysis. On-line acetylene leakage monitoring system was developed based on the experiment, and it is suitable for giving a leakage alarm of acetylene during its storage, transportation and use.
何莹,张玉钧,阚瑞峰,夏慧,王敏,崔小娟,陈玖英,陈东,刘文清,刘建国. 基于激光吸收光谱乙炔在线监测技术的研究[J]. 光谱学与光谱分析, 2008, 28(10): 2228-2231.
HE Ying,ZHANG Yu-jun,KAN Rui-feng,XIA Hui,WANG Min,CUI Xiao-juan,CHEN Jiu-ying,CHEN Dong,LIU Wen-qing, LIU Jian-guo. The Development of Acetylene On-Line Monitoring Technology Based on Laser Absorption Spectrum. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(10): 2228-2231.
[1] ZHONG Lin(钟 林). Shandong Chemical Industry(山东化工), 1999, (2): 26. [2] WANG Yu-tian，LI Xiao-xin，LIU Zhan-wei，et al(王玉田，李晓昕，刘占伟 ,等). Journal of Transduction Technology(传感技术学报),2004, 17(4): 619. [3] KAN Rui-feng, LIU Wen-qing, ZHANG Yu-jun, et al(阚瑞峰，刘文清，张玉钧, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2006,26(3): 392. [4] Feher M, Martin P A. Spectrochimica Acta, 1995, A51: 1579. [5] Wu S Q, Masusaki H, Kimishima T, et al. Jpn. J. Appl. Phys.,2000, 39: 4034. [6] Linnerud I, Kaspersen P, Jaegert T. Appl. Phys., 1998, B67: 297.
