Experimental Investigation on Hydrocarbon Diffusion Flames: Effects of Combustion Atmospheres on Flame Spectrum and Temperature
TANG Guang-tong1, YAN Hui-bo1, WANG Chao-yang1, LIU Zhi-qiang1, LI Xin1, YAN Xiao-pei1, ZHANG Zhong-nong2, LOU Chun2*
1. State Grid Hebei Energy Technology Service Co., Ltd., Shijiazhuang 050021, China
2. State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Abstract：Radiative heat transfer is the main mode of heat transfer in various combustion processes. The distribution of radiative spectra is complicated for different flames. In this work, the spectral intensities of a hydrocarbon diffusion flame invisible (200~900 nm), near-infrared (900~1 700 nm) and middle-infrared (2 500~5 000 nm) wavebands were measured by spectrometers. The spectral characteristics of the flame in air and oxy-combustion atmospheres were analysed. Based on spectral analysis, flame temperature was calculated, and thermal radiation from soot particle and gases in the flame could be quantitively evaluated. The results show that flame temperature in air combustion is lower than in oxy-combustion. Both soot and gas in flames play an important role in thermal radiation in air combustion, and gas is more important for thermal radiation in oxy-combustion. In visible and near-infrared wavebands, the spectral curve shows good continuity in air-combustion due to soot formation, but the radiative spectrum reduces in oxy-combustion. In the mid-infrared waveband, the gas radiation spectrum of air-combustion is obviously weaker than that of oxy-combustion.
基金资助: National Natural Science Foundation of China (51827808)
通讯作者:
娄 春
E-mail: Lou_chun@sina.com
作者简介: TANG Guang-tong, (1982—), senior engineer in State Grid Hebei Energy Technology Service Co. Ltd. e-mail: tgt114@163.com
引用本文:
唐广通，闫慧博，汪潮洋，刘志强，李 欣，闫晓沛，张仲侬，娄 春. 碳氢扩散火焰实验研究：燃烧气氛对火焰光谱与温度的影响[J]. 光谱学与光谱分析, 2022, 42(05): 1654-1660.
TANG Guang-tong, YAN Hui-bo, WANG Chao-yang, LIU Zhi-qiang, LI Xin, YAN Xiao-pei, ZHANG Zhong-nong, LOU Chun. Experimental Investigation on Hydrocarbon Diffusion Flames: Effects of Combustion Atmospheres on Flame Spectrum and Temperature. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(05): 1654-1660.
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