Recent progress on laser-induced breakdown spectroscopy for the monitoring of coal quality and unburned carbon in fly ash  

作　　者：张雷 胡志裕 尹王保 黄丹 马维光 董磊 武红鹏 李志新 肖连团 贾锁堂 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Laser Spectroscopy Laboratory,Shanxi University,Taiyuan 030006,China

出　　处：《Frontiers of physics》2012年第6期690-700,共11页物理学前沿（英文版）

基　　金：Acknowledgements This work was supported by the National Natural Science Foundation of China （Grant Nos. 61127017, 61205216, 61275213, 61178009, 61108030, and 60978018）, the National Basic Research Program （973 Program） （Grant No. 2012CB921603）, International Science ＆ Technology Cooperation Program of China （Grant No. 2001DFA12490）, Major Program of the National Natural Science Foundation of China （Grant No. 10934004）, NSFC Project for Excellent Research Team （Grant No. 61121064）, Environmental Project of Shanxi Province （Grant No. 2011256）.

摘　　要：Our recent progress on developments of laser-induced breakdown spectroscopy （L[BS） based equipments for on-line monitoring of pulverized coal and unburned carbon （UC） level of fly ash are reviewed. A fully software-controlled LIBS equipment comprising a self-cleaning device for on-line coal quality monitoring in power plants is developed. The system features an automated sampling device, which is capable of elemental （C, Ca, Mg, Ti, Si, H, Al, Fe, S, and organic oxygen） and proximate analysis （Qad and Aad） through optimal data processing methods. An automated prototype LIBS apparatus has been developed for possible application to power plants for on-line analysis of UC level in fly ash. New data processing methods are proposed to correct spectral interference and matrix effects, with the accuracy for UC level analysis estimated to be 0.26%.Our recent progress on developments of laser-induced breakdown spectroscopy （L[BS） based equipments for on-line monitoring of pulverized coal and unburned carbon （UC） level of fly ash are reviewed. A fully software-controlled LIBS equipment comprising a self-cleaning device for on-line coal quality monitoring in power plants is developed. The system features an automated sampling device, which is capable of elemental （C, Ca, Mg, Ti, Si, H, Al, Fe, S, and organic oxygen） and proximate analysis （Qad and Aad） through optimal data processing methods. An automated prototype LIBS apparatus has been developed for possible application to power plants for on-line analysis of UC level in fly ash. New data processing methods are proposed to correct spectral interference and matrix effects, with the accuracy for UC level analysis estimated to be 0.26%.

关 键 词：laser-induced breakdown spectroscopy （LIBS） on-line coal quality analysis organic oxygen proximate analysis unburned carbon multivariate inverse regression 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置] TQ533[自动化与计算机技术—控制科学与工程]