Monitoring the Wobbe Index of Natural Gas Using Fiber-Enhanced Raman 
Spectroscopy

Sandfort, Vincenz; Trabold, Barbara; Abdolvand, Amir; Bolwien, Carsten; Russell, Philip; Wöllenstein, Jürgen; Palzer, Stefan

doi:doi:10.3390/s17122714

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Monitoring the Wobbe Index of Natural Gas Using Fiber-Enhanced Raman Spectroscopy

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Trabold, Barbara
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Russell, Philip
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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sensors-17-02714.pdf
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引用

Sandfort, V., Trabold, B., Abdolvand, A., Bolwien, C., Russell, P., Wöllenstein, J., & Palzer, S. (2017). Monitoring the Wobbe Index of Natural Gas Using Fiber-Enhanced Raman Spectroscopy. Sensors, 17(12), 2714. doi:doi:10.3390/s17122714.

引用: https://hdl.handle.net/21.11116/0000-0000-C70B-4

要旨

The fast and reliable analysis of the natural gas composition requires the simultaneous quantification of numerous gaseous components. To this end, fiber-enhanced Raman spectroscopy is a powerful tool to detect most components in a single measurement using a single laser source. However, practical issues such as detection limit, gas exchange time and background Raman signals from the fiber material still pose obstacles to utilizing the scheme in real-world settings. This paper compares the performance of two types of hollow-core photonic crystal fiber (PCF), namely photonic bandgap PCF and kagome-style PCF, and assesses their potential for online determination of the Wobbe index. In contrast to bandgap PCF, kagome-PCF allows for reliable detection of Raman-scattered photons even below 1200 cm(-1), which in turn enables fast and comprehensive assessment of the natural gas quality of arbitrary mixtures.