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Spectroscopic Two-dimensional Observation of Flames in an Industrial furnace for Steel Processing

机译:钢铁加工工业炉中火焰的光谱二维观察

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摘要

In this study, a spectroscopic method is applied to measure two-dimensional (2D) distributions of flame temperatures during regenerative combustion of natural gas with highly preheated air in a test furnace of industrial size. By using a CCD camera fitted with an optical bandpass filter, the 2D distributions of the continuum emission from soot particles in premix and diffusion flames are measured at two different wavelengths. Subsequently, the temperature is determined on the basis of he two-color 2D thermometry, in which the ratio of the 2D emission intensity distributions is converted into the 2D temperature distribution with much higher spatial resolution in comparison with those obtainable by thermocouples.
机译:在这项研究中,在工业规模的试验炉中,采用光谱法测量天然气与高度预热的空气的再生燃烧过程中火焰温度的二维(2D)分布。通过使用配有光学带通滤光片的CCD摄像机,可以在两个不同的波长下测量预混和扩散火焰中烟尘颗粒的连续发射的2D分布。随后,基于双色2D测温法确定温度,其中将2D发射强度分布的比率转换为与热电偶可获得的空间分辨率相比具有更高空间分辨率的2D温度分布。

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