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Experimental and Kinetic Study on Laminar Burning Velocities of High Ratio Hydrogen Addition to CH 4 +O 2 +N 2 and NG+O 2 +N 2 Flames

Author

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  • Ziyue Zhang

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Runfan Zhu

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Yanqun Zhu

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Wubin Weng

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Yong He

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Zhihua Wang

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

Abstract

In 2020, energy-related CO 2 emissions reached 31.5 Gt, leading to an unprecedented atmospheric CO 2 level of 412.5 ppm. Hydrogen blending in natural gas (NG) is a solution for maximizing clean energy utilization and enabling long-distance H 2 transport through pipelines. However, insufficient comprehension concerning the combustion characteristics of NG, specifically when blended with a high proportion of hydrogen up to 80%, particularly with minority species, persists. Utilizing the heat flux method at room temperature and 1 atm, this experiment investigated the laminar burning velocities of CH 4 /NG/H 2 /air/He flames incorporating minority species, specifically C 2 H 6 and C 3 H 8, within NG. The results point out the regularity of S L enhancement, reaching its maximum at an equivalence ratio of 1.4. Furthermore, the propensity for the enhancement of laminar burning velocity aligned with the observed thermoacoustic oscillation instability during fuel-rich regimes. The experimental findings were contrasted with kinetic simulations, utilizing the GRI 3.0 and San Diego mechanisms to facilitate analysis. The inclusion of H 2 augments the chemical reactions within the preheating zone, while the thermal effect from temperature is negligible. Both experimental and simulated results revealed that CH 4 and NG with a large proportion of H 2 had no difference, no matter whether from a laminar burning velocity or a kinetic analysis aspect.

Suggested Citation

  • Ziyue Zhang & Runfan Zhu & Yanqun Zhu & Wubin Weng & Yong He & Zhihua Wang, 2023. "Experimental and Kinetic Study on Laminar Burning Velocities of High Ratio Hydrogen Addition to CH 4 +O 2 +N 2 and NG+O 2 +N 2 Flames," Energies, MDPI, vol. 16(14), pages 1-18, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:14:p:5265-:d:1190148
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    References listed on IDEAS

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    1. Fekadu Mosisa Wako & Gianmaria Pio & Ernesto Salzano, 2020. "The Effect of Hydrogen Addition on Low-Temperature Combustion of Light Hydrocarbons and Alcohols," Energies, MDPI, vol. 13(15), pages 1-14, July.
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