| Citation: | ZHANG Yanfeng, YANG Zhengpeng, CHEN Jun, et al. In-situ optical probe measurement of ultra-low emission reduction flue gas[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(2): 403-409. doi: 10.13700/j.bh.1001-5965.2016.0126(in Chinese)
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With the development of ultra-low emission reduction in coal-fired power plant, the requirement of monitoring technologies is becoming more and more rigid. A detector probe based on differential optics absorption spectroscopy (DOAS) and multi-wavelength extinction method is presented, which can be used to realize the in-situ measurement of SO2, particulate in flue gas, etc. The system was calibrated with the standard SO2 gas and polystyrene particulate, and both inversion concentrations agree well with real values. The error is less than 10%, the fitting line of seven SO2 measurement points has good linearity, and linear correlation coefficient is 0.999 64. The system was successfully applied to a coal-fired power plant in different operating conditions for a longer time continuous monitoring. Results show that the system has a good agreement between system monitoring and working conditions on SO2 and particulate in flue gas.
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