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

ABSTRACT: 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 kagomé-style PCF, and assesses their potential for online determination of the Wobbe index. In contrast to bandgap PCF, kagomé-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.

SUBMITTER: Sandfort V

PROVIDER: S-EPMC5753068 | biostudies-other | 2017 Nov

REPOSITORIES: biostudies-other

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

Sandfort Vincenz V Trabold Barbara M BM Abdolvand Amir A Bolwien Carsten C Russell Philip St. J PSJ Wöllenstein Jürgen J Palzer Stefan S

Sensors (Basel, Switzerland) 20171124 12

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 perfo ...[more]

PMID: 29186768

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