Field tests of the Raman gas composition sensor

Buric, Michael; Chorpening, Benjamin; Mullen, Jessica C.; Woodruff, Steven D.; Ranalli, Joseph

doi:10.1109/fiiw.2012.6378319

Cited by 5 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, the accuracy, repeatability, and reliability of the system have been reported in other publications [7][8][9]. In accordance with those reports, we determined that the instrument generally has an approximately 0.1% accuracy when properly calibrated, with a similar repeatability provided that an appropriate background measurement and subtraction is performed once prior to taking gas measurements [10].…”

Section: Initial Supporting Measurementsmentioning

confidence: 53%

“…Herein, we discussed necessary provisions for sample plumbing and system setup to perform such measurements in a realtime fashion. In other publications, we have addressed the accuracy, repeatability, and reliability of the system [7][8][9][10]. Here, we operated the RGA on a combustion system capable of easily producing transient composition responses without the threat of significant system damage during that transient operation.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Fuel flexibility via real-time Raman fuel-gas analysis for turbine system control

et al. 2015

View full text Add to dashboard Cite

The modern energy production base in the U.S. is increasingly incorporating opportunity fuels such as biogas, coalbed methane, coal syngas, solar-derived hydrogen, and others. In many cases, suppliers operate turbine-based generation systems to efficiently utilize these diverse fuels. Unfortunately, turbine engines are difficult to control given the varying energy content of these fuels, combined with the need for a backup natural gas supply to provide continuous operation. Here, we study the use of a specially designed Raman Gas Analyzer based on capillary waveguide technology with sub-second response time for turbine control applications. The NETL Raman Gas Analyzer utilizes a low-power visible pump laser, and a capillary waveguide gas-cell to integrate large spontaneous Raman signals, and fast gas-transfer piping to facilitate quick measurements of fuel-gas components. A U.S. Department of Energy turbine facility known as HYPER (hybrid performance system) serves as a platform for apriori fuel composition measurements for turbine speed or power control.A fuel-dilution system is used to simulate a compositional upset while simultaneously measuring the resultant fuel composition and turbine response functions in real-time. The feasibility and efficacy of system control using the spontaneous Raman-based measurement system is then explored with the goal of illustrating the ability to control a turbine system using available fuel composition as an input process variable.

show abstract

Section: Initial Supporting Measurementsmentioning

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Fuel flexibility via real-time Raman fuel-gas analysis for turbine system control

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The TLK Raman set up, seen in Figure 6, is made of stainless steel-lined hollow glass fibers/capillaries as the Raman gas sample cell. The first implementation of these gas cells was in a high-pressure (44.8 bar, 650 psig) application by Buric et al to monitor on-line gas composition [49,50].…”

Section: Specialized Raman Spectrometersmentioning

confidence: 99%

Commercially available Hydrogen Detection Systems for Corrosive, Oxygen-free Gas Streams: A Technical Summary

Vestal¹,

Peruski²,

McFarlane³

2023

View full text Add to dashboard Cite

The growing use of hydrogen gas across energy, transportation, and chemical applications necessitates better hydrogen sensors and detectors. Few sensors exist for quantifying hydrogen gas in a corrosive, oxygen-free gas stream due to the challenging nature of the sampling environment and current technological status. Handheld, economic options include palladium-based, metal oxide, catalytic bead, and electrochemical sensors. More permanent and costly options include electrochemical sensors, thermal gas analyzers, mass spectrometers, gas chromatographs, and Raman spectrometers. In this technical report, a short review of current technology, along with the associated commercially available products, is provided. Raman spectroscopy is recommended as an ideal technology for on-line detection of hydrogen at low concentrations in a corrosive, oxygen-free gas stream.

show abstract

“…They thoroughly characterised their setup, 17 and then primarily applied it as a sensor in gaseous fuel analysis at high pressure, with input feed pressures of up to 650 psig (44.8 bar). 18 In this application, the Raman measurement times were very short (0.1 s) to monitor the gas composition, therefore implying the potential for real-time combustion control. The Japanese group's main implementation aimed at compactness, coiling the capillary into a multiple loop of a few centimetres in radius.…”

Section: And Csontos Et Almentioning

confidence: 99%

Trace gas and dynamic process monitoring by Raman spectroscopy in metal-coated hollow glass fibres

2015

View full text Add to dashboard Cite

Quantitative capillary Raman spectroscopy measurements are described, in which improved speed and sensitivity for atmospheric trace gas analysis and real-time monitoring of catalytic hydrogen-exchange reactions were demonstrated. ARTICLE accepted for publicationT.M. James et al -Raman trace gas and process monitoring using metal-coated hollow glass fibres Results on using capillary Raman spectroscopy as an approach for improving the speed, sensitivity and limit of detection for quantitative analysis of gases are reported. Specifically, its potential for trace component identification and rapid process control has been explored. Using a metal-lined hollow glass capillary configuration, its Raman signal was found to be two orders of magnitude larger than that from a conventional 90° Raman implementation. However, the actual improvement in the signal-to-noise ratio and thus the limit of detection was markedly lower, due to an increase in the fluorescence background generated in optical components in the laser beam path and the capillary body itself. Using careful, systematic suppression strategies, the signal-tonoise ratio of our capillary setup increased by a further factor of 3-4, now yielding detection limits for trace gases well below the 100 ppm level. In a "dynamic" measurement series the time evolution of catalytic gas mixing of H 2 and D 2 , to form HD, has been recorded, in which sub-mbar detection limits in sub-second recording times were achieved.

show abstract

Field tests of the Raman gas composition sensor

Cited by 5 publications

References 4 publications

Fuel flexibility via real-time Raman fuel-gas analysis for turbine system control

Fuel flexibility via real-time Raman fuel-gas analysis for turbine system control

Commercially available Hydrogen Detection Systems for Corrosive, Oxygen-free Gas Streams: A Technical Summary

Trace gas and dynamic process monitoring by Raman spectroscopy in metal-coated hollow glass fibres

Contact Info

Product

Resources

About