Abstract.
As sulfur dioxide (SO2) is often involved in combustion processes, we present here SO2-concentration measurements in the post-flame region of a CH4/air/SO2 premixed flame. SO2 concentrations were deduced from high-resolution absorption spectra recorded with a mid-infrared tunable diode-laser (TDL) source operating at liquid nitrogen temperature. Single-mode, continuous frequency tuning around 1384.5 cm-1 (or 7.5 μm) is achieved by a fine TDL temperature ramp. These experiments lead us to develop in situ combustion-pollutant measurements with compact apparatus. We show that this non-intrusive method is efficient for detection and allows the retrieval of SO2 concentration and temperature.
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Received: 19 February 2001 / Revised version: 18 April 2001 / Published online: 7 June 2001
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Weidmann, D., Hamdouni, A. & Courtois, D. CH4/air/SO2 premixed flame spectroscopy with a 7.5-μm diode laser . Appl Phys B 73, 85–91 (2001). https://doi.org/10.1007/s003400100613
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DOI: https://doi.org/10.1007/s003400100613