Abstract：By means of high-temperature reduction method, the oxidized mercury will be reduced to elemental mercury without any catalyst, which is convenient for the monitoring of mercury in flue gas. Using differential optical absorption spectroscopy (DOAS) to inversion the concentrations of mercury, and then comparing that with the outcome resulted from experiment without the high-temperature device to verify the applicability of high temperature equipment, and to carry out experiments mixed with different concentrations of the elemental mercury and mercury oxidation. By probing into the impact of genetic algorithm, FFT and the integral area method on the concentration of mercury in flue gas based on the traditional DOAS algorithm, it’s turned out that the traditional algorithm is of contingency with a comparatively large overall error, while the Fourier transform inversion error is too large, the algorithm of integral area inversion has a lower error and a stable volatility than genetic algorithm and integral area inversion error minimum of 0.55%. The volatility of genetic algorithm is also not as stable as that of integral area inversion, which demonstrates that the integral area inversion is the most applicable for the inversion of low concentration of mercury.
郑海明,李长朝. 基于高温还原及差分吸收光谱监测烟气汞的实验研究[J]. 计量学报, 2017, 38(6): 780-785.
ZHENG Hai-ming,LI Chang-zhao. Research on Flue Gas Mercury Based on High Temperature Reduction and Differential Absorption Spectroscopy. Acta Metrologica Sinica, 2017, 38(6): 780-785.
［1］蔡同锋. 固定污染源烟气汞排放手动监测研究［J］. 科技传播,2013,(6):133-134.
［2］郑海明.固定污染源烟气中汞排放连续监测系统［J］.环境监测管理与技术,2009,21(1):8-12.
［3］杨宏旻,刘坤磊,曹晏,等.电站烟气脱硫装置的脱汞特性实验［J］.动力工程,2006,26(4):554-557.
［4］HJ/T 76—2007 固定污染源烟气排放连续监测系统技术要求及检测方法［S］ .
［5］杨祥花,段钰锋,杨林军,等.燃煤电厂烟气中的汞浓度测量［J］. 能源研究与利用,2005,(5):25-29.
［6］郑海明,蔡小舒.烟气连续排放监测系统相对准确度的测试评估［J］.计量学报,2007,28(1):85-88.
［7］周斌,刘文清,齐峰,等. 差分吸收光谱法测量大气污染的浓度反演方法研究［J］. 物理学报,2001,50(9):1818-1823.
［8］杨立国,段钰锋,杨祥花,等.燃煤电厂汞排放特性实验研究［J］.东南大学学报:自然科学版,2007,37(5):817-821.
［9］Huggin F E, Yap N, Huffman G P, et al. XAFS characterization of mercury captured from combustion ases on sorbents at low temperatures［J］. Fuel Process Technol,2003,82(2-3):167-196.
［10］解东水. 烟气汞在线监测校准系统的技术研究［D］. 保定:华北电力大学,2014.
2017, Vol. 38 
