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| 紫外吸收光谱法在线测量SO3的实验研究 | |
| 引用本文： | 郑海明,朱小朋,王金袖,贾桂红.紫外吸收光谱法在线测量SO3的实验研究[J].计量学报,2021,42(8):1076-1080. |
| 作者姓名： | 郑海明 朱小朋 王金袖 贾桂红 |
| 作者单位： | 1.华北电力大学能源动力与机械工程学院,河北 保定 071003 2.华电电力科学研究院有限公司,浙江 杭州 310030 |
| 基金项目： | 国家重点研发计划(2016YFB0600701);国家自然科学基金(11174078);河北省自然科学基金(E2019502089);中央高校基本科研业务费专项资金(2017MS145) |
| 摘 要： | 基于紫外吸收光谱法对SO3的在线测量进行了实验研究,搭建了SO3气体发生系统。为提高检测精度,探究了去除测量过程中的各种干扰因素。SO3与SO2的特征吸收波段重叠严重,通过合理选择特征吸收波段和光谱反演策略最大程度地去除SO2对SO3测量的影响。研究中采用标准曲线法结合单波长法、双波长法和积分光谱法建立了标准曲线。结果表明:积分光谱法的测量误差最小,可优先应用于SO3排放的在线光谱计量分析。 |
| 关 键 词： | 计量学 SO3体积分数 在线测量 紫外吸收光谱 双波长法 积分光谱法 |
| 收稿时间： | 2019-12-27 |
Experimental Study on On-line Measurement of SO3 by Ultraviolet Absorption Spectroscopy |
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| ZHENG Hai-ming,ZHU Xiao-peng,WANG Jin-xiu,JIA Gui-hong.Experimental Study on On-line Measurement of SO3 by Ultraviolet Absorption Spectroscopy[J].Acta Metrologica Sinica,2021,42(8):1076-1080. | |
| Authors: | ZHENG Hai-ming ZHU Xiao-peng WANG Jin-xiu JIA Gui-hong |
| Affiliation: | 1. School of Energy Power and Mechanical Engineering, North China Electric Power University, Baoding, Hebei 071003, China 2. HuaDian Electric Power Research Institute Co. Ltd, Hangzhou, Zhejiang 310030, China |
| Abstract: | The on-line measurement of SO3 is studied based on ultraviolet absorption spectroscopy, and SO3 gas generation system is built. In order to improve the detection accuracy, various interference factors in the measurement process are removed. The characteristic absorption bands of SO3 and SO2 overlap seriously, and the influence of SO2 on SO3 measurement can be removed to the greatest extent through reasonable selection of characteristic absorption bands and spectral inversion strategy. In the study, the standard curve method combined with single wavelength method, dual wavelength method and integral spectrum method is used to establish the standard curve. The results show that the measurement error of the integrated spectrum method is the smallest, and it can be preferentially applied to the on-line spectrometric analysis of SO3 emission. |
| Keywords: | metrology SO3 volume fraction on-line measurement ultraviolet absorption spectroscopy dual-wavelength method integral spectral method |
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