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Broadband UV spectroscopy system used for monitoring of SO2 and NO emissions from thermal power plants
Authors:YG Zhang  HS Wang  G Somesfalean  ZY Wang  XT Lou  SH Wu  ZG Zhang  YK Qin
Institution:1. Department of Physics, Harbin Institute of Technology, Harbin 150001, PR China;2. Research Institute for Combustion Engineering, Harbin Institute of Technology, Harbin 150001, PR China;3. National Engineering Lab for Coal Combustion Pollutant Control, Harbin 150001, PR China;4. State Key Laboratory of Modern Optical Instrumentation, Joint Research Center of Photonics, Zhejiang University, Hangzhou 310058, PR China;1. Istituto Motori di Napoli – CNR, Via G. Marconi 4, 80125 Napoli, Italy;2. Politehnica University of Timisoara, Bld Mihai Viteazul 1, 300222 Timisoara, Romania;1. National Defense Key Subject Laboratory for Nuclear Safety and Simulation Technology, Harbin Engineering University, Harbin 150001, China;2. China Nuclear Power Engineering Co., Ltd., ShenZhen 518000, China;1. Space Research Institute, Russian Academy of Sciences, Profsoyuznaya 84/32, 117997 Moscow, Russia;2. Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany;3. Institut für Geophysik und Extraterrestrische Physik (IGEP), Technische Universität Braunschweig, Mendelssohnstr. 3, D-38106 Braunschweig, Germany;1. School of Mechanical Engineering, University of Birmingham, UK;2. State Key Laboratory of Automotive and Energy, Tsinghua University, Beijing, China
Abstract:A gas monitoring system based on broadband absorption spectroscopic techniques in the ultraviolet region is described and tested. The system was employed in real-time continuous concentration measurements of sulfur dioxide (SO2) and nitric oxide (NO) from a 220-ton h?1 circulating fluidized bed (CFB) boiler in Shandong province, China. The emission coefficients (per kg of coal and per kWh of electricity) and the total emission of the two pollutant gases were evaluated. The measurement results showed that the emission concentrations of SO2 and NO from the CFB boiler fluctuated in the range of 750–1300 mg m?3 and 100–220 mg m?3, respectively. Compared with the specified emission standards of air pollutants from thermal power plants in China, the values were generally higher for SO2 and lower for NO. The relatively high emission concentrations of SO2 were found to mainly depend on the sulfur content of the fuel and the poor desulfurization efficiency. This study indicates that the broadband UV spectroscopy system is suitable for industrial emission monitoring and pollution control.
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