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Raman Spectral Characteristic Analysis of Natural Gas Hydrate Decomposition Process

Received: 1 April 2022    Accepted: 22 April 2022    Published: 7 May 2022
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Abstract

Natural gas hydrate is an important potential energy source. Hydrates are easy to decompose at room temperature and pressure. In this paper, the laser Raman technology is used to quickly detect mixed gas hydrates at room temperature. The spectral characteristics show that: (1) The peak area ratio of the Raman spectrum is analyzed to obtain the mixed gas hydrate. The structure is type II, the stretching vibration or rotation region of the C-C bond is 700~2500cm-1, the stretching vibration region of the C-H bond is 2850~3000cm-1, and the stretching vibration region of the O-H bond is 3000~3800cm-1; (2) Observing the change of C-H bond energy with time shows that the bond energy of hydrates prepared in the laboratory gradually decreases with the passage of time under normal temperature and pressure, and the peak disappears; (3) Spectral peaks and Raman patterns identified by combining with wavelet analysis theory build a natural gas hydrate analysis library. In the process of natural gas hydrate extraction and transportation, the application of laser Raman technology does not require any sample processing, and the detection process can be fast, convenient and accurate. This technology provides an effective detection, analysis and evaluation method for hydrate state research. Combined with wavelet analysis, Raman spectroscopy can be used for online detection in the process of hydrate mining and transportation, providing a convenient detection method for hydrate research.

Published in Modern Chemistry (Volume 10, Issue 2)
DOI 10.11648/j.mc.20221002.13
Page(s) 48-55
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Natural Gas Hydrate, Raman Spectrum, Characteristic Peak, C-H Bond, Wavelet Transform

References
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Cite This Article
  • APA Style

    Chunyang Wei, Zhuang Zhao, Jingwei Zhu, Zhiyuan Xue. (2022). Raman Spectral Characteristic Analysis of Natural Gas Hydrate Decomposition Process. Modern Chemistry, 10(2), 48-55. https://doi.org/10.11648/j.mc.20221002.13

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    ACS Style

    Chunyang Wei; Zhuang Zhao; Jingwei Zhu; Zhiyuan Xue. Raman Spectral Characteristic Analysis of Natural Gas Hydrate Decomposition Process. Mod. Chem. 2022, 10(2), 48-55. doi: 10.11648/j.mc.20221002.13

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    AMA Style

    Chunyang Wei, Zhuang Zhao, Jingwei Zhu, Zhiyuan Xue. Raman Spectral Characteristic Analysis of Natural Gas Hydrate Decomposition Process. Mod Chem. 2022;10(2):48-55. doi: 10.11648/j.mc.20221002.13

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  • @article{10.11648/j.mc.20221002.13,
      author = {Chunyang Wei and Zhuang Zhao and Jingwei Zhu and Zhiyuan Xue},
      title = {Raman Spectral Characteristic Analysis of Natural Gas Hydrate Decomposition Process},
      journal = {Modern Chemistry},
      volume = {10},
      number = {2},
      pages = {48-55},
      doi = {10.11648/j.mc.20221002.13},
      url = {https://doi.org/10.11648/j.mc.20221002.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.mc.20221002.13},
      abstract = {Natural gas hydrate is an important potential energy source. Hydrates are easy to decompose at room temperature and pressure. In this paper, the laser Raman technology is used to quickly detect mixed gas hydrates at room temperature. The spectral characteristics show that: (1) The peak area ratio of the Raman spectrum is analyzed to obtain the mixed gas hydrate. The structure is type II, the stretching vibration or rotation region of the C-C bond is 700~2500cm-1, the stretching vibration region of the C-H bond is 2850~3000cm-1, and the stretching vibration region of the O-H bond is 3000~3800cm-1; (2) Observing the change of C-H bond energy with time shows that the bond energy of hydrates prepared in the laboratory gradually decreases with the passage of time under normal temperature and pressure, and the peak disappears; (3) Spectral peaks and Raman patterns identified by combining with wavelet analysis theory build a natural gas hydrate analysis library. In the process of natural gas hydrate extraction and transportation, the application of laser Raman technology does not require any sample processing, and the detection process can be fast, convenient and accurate. This technology provides an effective detection, analysis and evaluation method for hydrate state research. Combined with wavelet analysis, Raman spectroscopy can be used for online detection in the process of hydrate mining and transportation, providing a convenient detection method for hydrate research.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Raman Spectral Characteristic Analysis of Natural Gas Hydrate Decomposition Process
    AU  - Chunyang Wei
    AU  - Zhuang Zhao
    AU  - Jingwei Zhu
    AU  - Zhiyuan Xue
    Y1  - 2022/05/07
    PY  - 2022
    N1  - https://doi.org/10.11648/j.mc.20221002.13
    DO  - 10.11648/j.mc.20221002.13
    T2  - Modern Chemistry
    JF  - Modern Chemistry
    JO  - Modern Chemistry
    SP  - 48
    EP  - 55
    PB  - Science Publishing Group
    SN  - 2329-180X
    UR  - https://doi.org/10.11648/j.mc.20221002.13
    AB  - Natural gas hydrate is an important potential energy source. Hydrates are easy to decompose at room temperature and pressure. In this paper, the laser Raman technology is used to quickly detect mixed gas hydrates at room temperature. The spectral characteristics show that: (1) The peak area ratio of the Raman spectrum is analyzed to obtain the mixed gas hydrate. The structure is type II, the stretching vibration or rotation region of the C-C bond is 700~2500cm-1, the stretching vibration region of the C-H bond is 2850~3000cm-1, and the stretching vibration region of the O-H bond is 3000~3800cm-1; (2) Observing the change of C-H bond energy with time shows that the bond energy of hydrates prepared in the laboratory gradually decreases with the passage of time under normal temperature and pressure, and the peak disappears; (3) Spectral peaks and Raman patterns identified by combining with wavelet analysis theory build a natural gas hydrate analysis library. In the process of natural gas hydrate extraction and transportation, the application of laser Raman technology does not require any sample processing, and the detection process can be fast, convenient and accurate. This technology provides an effective detection, analysis and evaluation method for hydrate state research. Combined with wavelet analysis, Raman spectroscopy can be used for online detection in the process of hydrate mining and transportation, providing a convenient detection method for hydrate research.
    VL  - 10
    IS  - 2
    ER  - 

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Author Information
  • College of Petroleum Engineering, Liaoning Petrochemical University, Fushun, China

  • College of Petroleum Engineering, Liaoning Petrochemical University, Fushun, China

  • College of Petroleum Engineering, Liaoning Petrochemical University, Fushun, China

  • College of Petroleum Engineering, Liaoning Petrochemical University, Fushun, China

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