Application of Raman Spectroscopy for Determination of Syngas Composition

Petrov, Dmitri; Matrosov, I. I.; Zaripov, A. R.; Maznoy, Anatoly

doi:10.1177/0003702820917222

Cited by 22 publications

(13 citation statements)

References 32 publications

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“…The syngas composition was measured in-situ using a portable gas analyzer (Geotechnical Instrument GA 2000, USA). Petrov et al [67] observed that the use of GC presents challenges including realtime fast syngas analysis. For this reason, a modern way is the use of Raman spectroscopy.…”

Section: Syngas Composition Analysismentioning

confidence: 99%

Recent Development of Biomass and Plastic Co-Pyrolysis for Syngas Production

Mensah

Ahiekpor

Bensah

et al. 2022

CSIJ

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Co-pyrolysis is an enhanced thermochemical conversion process employed to convert lignocellulosic and plastic materials into more improved liquid, gaseous, and solid biofuels. Co-pyrolysis has been used extensively for the manufacturing of liquid biofuels (bio-oil) with little emphasis on syngas production. However, syngas is a promising source of renewable power generation and green chemicals. Production of syngas provides an opportunity for achieving negative carbon dioxide through the implementation of carbon capture and storage. This paper reviews the production of syngas through co-pyrolysis of plastic and biomass wastes in a typical municipal solid waste from Ghana. The effects of key production parameters including type of feedstock, temperature, catalysts, heating rate, reactor configuration, and residence time on the yield and composition of the syngas are outlined. The paper attempts to unravel the kinetic mechanisms of the co-pyrolysis process and the synergistic effects that co-exist between the feedstocks during syngas production. It was found that syngas can be optimized in terms of yield and quality to be used as transportation fuels, chemicals, and the production of electricity through the co-pyrolysis process.

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Section: Syngas Composition Analysismentioning

confidence: 99%

Recent Development of Biomass and Plastic Co-Pyrolysis for Syngas Production

Mensah

Ahiekpor

Bensah

et al. 2022

CSIJ

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“…The main difference between such analysis from laboratory measurements is variations of pressure and temperature of the gas sample, which can lead to significant changes in the Raman spectra of the components, [10][11][12] and the error in the concentration measuring will be increased. [13] In this regard, it is necessary to develop algorithms for processing the spectra of NG, which make it possible to obtain the corrected concentrations from the spectra recorded at various conditions. The spectral range of 200-2500 cm À1 is most convenient for the determination of the NG composition.…”

Section: Introductionmentioning

confidence: 99%

Simulation of ν₂ Raman band of methane as a function of pressure

Tanichev

Petrov

2021

J Raman Spectroscopy

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The in situ analysis of natural gas is one of the most promising applications of Raman spectroscopy. It is necessary to take into account the pressure effect on the spectrum of methane to improve the accuracy of this technique. This study aimed to develop and verify two methods for simulating the ν2 Raman band of methane at any spectral resolution and pressure. The first method was based on the use of the spectroscopic parameters of each single line (position, intensity, broadening, and shift coefficient). The second one was based on the use of the spectral profiles, each of which replaces a group of lines. The data required for the implementation of each method are presented in this work. A comparison of the calculated and measured spectra with a resolution of ~0.5 and ~7 cm−1 was performed. It was shown that the differences do not exceed 5% for each method in the range of 1–60 atm.

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“…IR spectroscopy is not sensitive to H 2 and is thus not suited for the analysis of fuel gases with considerable amounts of H 2 , which is expected when PtG is realized. In contrast, Raman gas spectroscopy is an emerging, − highly selective − technique that enables the simultaneous detection and quantification of all relevant gases, − from incombustible (CO 2 and N 2 ) to combustible components, including H 2 . ,− Notably, Raman-based measurements proved to be comparable to the GC-based standard technique in terms of precision and accuracy …”

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confidence: 99%

Hydrogen and C2–C6 Alkane Sensing in Complex Fuel Gas Mixtures with Fiber-Enhanced Raman Spectroscopy

Knebl

Domes

et al. 2021

Anal. Chem.

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Power-to-gas is a heavily discussed option to store surplus electricity from renewable sources. Part of the generated hydrogen could be fed into the gas grid and lead to fluctuations in the composition of the fuel gas. Consequently, both operators of transmission networks and end users would need to frequently monitor the gas to ensure safety as well as optimal and stable operation. Currently, gas chromatography-based analysis methods are the state of the art. However, these methods have several downsides for time-resolved and distributed application and Raman gas spectroscopy is favorable for future point-of-use monitoring. Here, we demonstrate that fiber-enhanced Raman gas spectroscopy (FERS) enables the simultaneous detection of all relevant gases, from major (methane, CH 4 ; hydrogen, H 2 ) to minor (C2−C6 alkanes) fuel gas components. The characteristic peaks of H 2 (585 cm −1 ), CH 4 (2917 cm −1 ), isopentane (765 cm −1 ), i-butane (798 cm −1 ), n-butane (830 cm −1 ), n-pentane (840 cm −1 ), propane (869 cm −1 ), ethane (993 cm −1 ), and nhexane (1038 cm −1 ) are well resolved in the broadband spectra acquired with a compact spectrometer. The fiber enhancement achieved in a hollow-core antiresonant fiber enables highly sensitive measurements with limits of detection between 90 and 180 ppm for different hydrocarbons. Both methane and hydrogen were quantified with high accuracy with average relative errors of 1.1% for CH 4 and 1.5% for H 2 over a wide concentration range. These results show that FERS is ideally suited for comprehensive fuel gas analysis in a future, where regenerative sources lead to fluctuations in the composition of gas.

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Application of Raman Spectroscopy for Determination of Syngas Composition

Cited by 22 publications

References 32 publications

Recent Development of Biomass and Plastic Co-Pyrolysis for Syngas Production

Recent Development of Biomass and Plastic Co-Pyrolysis for Syngas Production

Simulation of ν₂ Raman band of methane as a function of pressure

Hydrogen and C2–C6 Alkane Sensing in Complex Fuel Gas Mixtures with Fiber-Enhanced Raman Spectroscopy

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Application of Raman Spectroscopy for Determination of Syngas Composition

Cited by 22 publications

References 32 publications

Recent Development of Biomass and Plastic Co-Pyrolysis for Syngas Production

Recent Development of Biomass and Plastic Co-Pyrolysis for Syngas Production

Simulation of ν2 Raman band of methane as a function of pressure

Hydrogen and C2–C6 Alkane Sensing in Complex Fuel Gas Mixtures with Fiber-Enhanced Raman Spectroscopy

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Simulation of ν₂ Raman band of methane as a function of pressure