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Effect of diluent gas on propagation and explosion characteristics of hydrogen-rich syngas laminar premixed flame

Author

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  • Zhang, Guo-Peng
  • Li, Guo-Xiu
  • Li, Hong-Meng
  • Lv, Jia-Cheng

Abstract

Syngas, a promising renewable alternative fuel, shows different combustion characteristics depending on its exact composition. In this study, the effect of different diluents on the laminar premixed flame of hydrogen-rich syngas was experimentally investigated using a 90% H2/10% CO/air mixture in a constant-volume combustion bomb. In particular, this investigation revealed the effects of varying the equivalence ratio (0.6, 0.8, and 1.0) and dilution content (10%, 20%, and 30%) on the flame propagation and explosion characteristics of syngas/air mixture. The results showed that for a given dilution gas content, the flame propagation speed under CO2 dilution is less than that under N2 dilution; however, the flame acceleration effect of CO2 dilution is significantly higher than that of N2. As the dilution increases, the rate of pressure rise and the maximum combustion explosion pressure gradually decrease. For a given equivalence ratio, the maximum rate of pressure rise and the deflagration index of the flame mixed with N2 were higher than those for CO2.

Suggested Citation

  • Zhang, Guo-Peng & Li, Guo-Xiu & Li, Hong-Meng & Lv, Jia-Cheng, 2022. "Effect of diluent gas on propagation and explosion characteristics of hydrogen-rich syngas laminar premixed flame," Energy, Elsevier, vol. 246(C).
    • Handle: RePEc:eee:energy:v:246:y:2022:i:c:s0360544222002730
    DOI: 10.1016/j.energy.2022.123370
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    References listed on IDEAS

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    1. Hong-Meng Li & Guo-Xiu Li & Zuo-Yu Sun & Yue Zhai & Zi-Hang Zhou, 2014. "Research on Cellular Instabilities of Lean Premixed Syngas Flames under Various Hydrogen Fractions Using a Constant Volume Vessel," Energies, MDPI, vol. 7(7), pages 1-17, July.
    2. Jiang, Yan-huan & Li, Guo-xiu & Li, Hong-meng & Zhang, Guo-peng & Lv, Jia-cheng, 2020. "Study on the effect of hydrogen fraction on the premixed combustion characteristics of syngas/air mixtures," Energy, Elsevier, vol. 200(C).
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    Citations

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    Cited by:

    1. Zhao, Haoran & Wang, Jinhua & Cai, Xiao & Dai, Hongchao & Liu, Xiao & Li, Gang & Huang, Zuohua, 2023. "On accelerative propagation of premixed hydrogen/air laminar and turbulent expanding flames," Energy, Elsevier, vol. 283(C).
    2. Wang, Tao & Liang, He & Luo, Zhenmin & Yu, Jianliang & Cheng, Fangming & Zhao, Jingyu & Su, Bin & Li, Ruikang & Wang, Xuqing & Feng, Zairong & Deng, Jun, 2023. "Thermal suppression effects of diluent gas on the deflagration behavior of H2–air mixtures," Energy, Elsevier, vol. 272(C).
    3. Zhen Shang & Yao Sun & Xiumin Yu & Ling He & Luquan Ren, 2023. "Effect of Hydrogen-Rich Syngas Direct Injection on Combustion and Emissions in a Combined Fuel Injection—Spark-Ignition Engine," Sustainability, MDPI, vol. 15(11), pages 1-15, May.
    4. Qi, Beibei & Li, Haitao & Zhai, Fuer & Yu, Minggao & Wei, Chengcai, 2024. "Experimental and numerical study on the explosion characteristics of syngas under different venting conditions," Energy, Elsevier, vol. 290(C).
    5. Qi, Chang & Ding, Jianfei & Wang, Yue & Ning, Ye & Wang, Yalei & Liang, He & Yan, Xingqing & Yu, Jianliang, 2023. "Investigation of the upper flammability limit of ethylene/propane mixtures in air at high temperatures and pressures," Energy, Elsevier, vol. 281(C).
    6. Wentong Wang & Dengke Chen & Wenkun Zhu & Rui Sun, 2023. "The Effect of Diluents on the Flame Structure and NO Generation Characteristics of H 2 /CO Micromixing Flames," Energies, MDPI, vol. 16(3), pages 1-14, January.

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