• Vol 2, No 1 (2011)
  • Electrical, Electronics, and Computer Engineering

Applicability Of TDLAS Gas Detection Technique To Combustion Control and Emission Monitoring Under Harsh Environment

Hajime Arimoto, Nobuo Takeuchi, Sachio Mukaihara, Toru Kimura, Ryuzo Kano, Takeo Ohira, Shinji Kawashima, Kazuya Iwakura


Publish at : 01 Jan 2011
IJtech : IJtech Vol 2, No 1 (2011)
DOI : https://doi.org/10.14716/ijtech.v2i1.42

Cite this article as:
Arimoto, H., Takeuchi, N., Mukaihara, S., Kimura, T., Kano, R., Ohira, T., Kawashima, S., Iwakura, K., 2011. Applicability Of TDLAS Gas Detection Technique To Combustion Control and Emission Monitoring Under Harsh Environment. International Journal of Technology. Volume 2(1), pp. 1-9
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Hajime Arimoto Kyoto Electronics Manufacturing Co., Ltd 74 Kisshoin Shinden Ninodan-cho, Minami-ku, Kyoto 601-8317, Japan
Nobuo Takeuchi Center for Environmental Remote Sensing, Chiba University 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan ; Kyoto Electronics Manufacturing Co., Ltd 74 Kisshoin Shinden Ninodan-cho, Minami-ku, Kyot
Sachio Mukaihara Kyoto Electronics Manufacturing Co., Ltd 74 Kisshoin Shinden Ninodan-cho, Minami-ku, Kyoto 601-8317, Japan
Toru Kimura Kyoto Electronics Manufacturing Co., Ltd 74 Kisshoin Shinden Ninodan-cho, Minami-ku, Kyoto 601-8317, Japan
Ryuzo Kano Kyoto Electronics Manufacturing Co., Ltd 74 Kisshoin Shinden Ninodan-cho, Minami-ku, Kyoto 601-8317, Japan
Takeo Ohira Kyoto Electronics Manufacturing Co., Ltd 74 Kisshoin Shinden Ninodan-cho, Minami-ku, Kyoto 601-8317, Japan
Shinji Kawashima Kyoto Electronics Manufacturing Co., Ltd 74 Kisshoin Shinden Ninodan-cho, Minami-ku, Kyoto 601-8317, Japan
Kazuya Iwakura Kyoto Electronics Manufacturing Co., Ltd 74 Kisshoin Shinden Ninodan-cho, Minami-ku, Kyoto 601-8317, Japan
Email to Corresponding Author

Abstract
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Tunable diode laser absorption spectroscopy (TDLAS) has been well-known as an established detection technique for trace gas molecules and analytical instruments based on this technique are already commercially available. Practical applications to combustion control and emission monitoring for incinerators and industrial furnaces often involve considerations about the technique’s capability to cope with such harsh measuring environmental conditions as high temperature, high pressure and high humidity. In this study, we theoretically describe the laser modulation spectroscopy technique and discuss practical applicability of the technique through a comparison between laboratory experimental results and theoretical calculations by the use of a molecular spectroscopic database, stressing on hydrogen chloride (HCl) measurement for exhaust gas of incinerators. Under experimental condition of elevated temperature, observed absorption line strength deduced by the second harmonic absorption spectrum of HCl in the first overtone region shows good agreement with theoretical prediction. This result indicates that variation of absorption signal due to temperature variation of flue gas can be compensated if gas temperature is simultaneously obtained.

Combustion control, Emission monitoring, Hydrogen Chloride (HCl), Molecular spectroscopy, Tunable Diode Laser Absorption Spectroscopy (TDLAS)

References

Arndt, R., 1965. Analytical Line Shapes for Lorentzian Signals Broadened by Modulation, Journal of Applied Physics, Volume 36, Number 8, pp. 2522-2524.

Brown, L.R. & Plymate, C., 2000. Experimental Line Parameters of the Oxygen a Band at 760 nm, Journal of Molecular Spectroscopy, Volume 199, Number 2, pp. 166-179.

Cooper, D.E. and Warren, R.E., 1987. Frequency Modulation Spectroscopy with Lead-salt Diode Lasers: A Comparison of Single-tone and Two-tone Techniques, Applied Optics, Volume 26, Number 17, pp. 3726-3732.

Reid, J. & Labrie, D., 1983. Second-harmonic Detection with Tunable Diode Lasers - Comparison of Experiment and Theory, Applied Physics B: Lasers and Optics, Volume 26, Number 3, pp. 203-210.

Rothman, L.S., Gordon, I.E., Barbe, A., Benner, D.C., Bernath, P.F., Birk, M., et al., 2009. The HITRAN 2008 Molecular Spectroscopic Database, Journal of Quantitative Spectroscopy and Radiation Transfer, Volume 110, Numbers 9-10, pp. 533-572.

Silver, J.A., 1992. Frequency-modulation Spectroscopy for Trace Species Detection: Theory and Comparison among Experimental Methods, Applied Optics, Volume 31, Number 6, pp. 707-717.

Uehara, K., 1998. Dependence of Harmonic Signals on Sample-gas Parameters in Wavelengthmodulation Spectroscopy for Precise Absorption Measurements, Applied Physics B: Lasers and Optics, Volume 67, Number 4, pp. 517-523.

Wahlquist, H., 1961. Modulation Broadening of Unsaturated Lorentzian Lines, Journal of Chemical Physics, Volume 35, Number 5, pp. 1708-1710.

Wilson, G.V.H., 1963. Modulation Broadening of NMR and ESR Line Shapes, Journal of Applied Physics, Volume 34, Number 11, pp. 3276-3285.

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