IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v18y2025i4p953-d1592923.html
   My bibliography  Save this article

Emissions Characteristics of OH During H 2 /CH 4 /Air Mixtures Explosion in a 20 L Closed Tank

Author

Listed:
  • Ruikang Li

    (Postdoctoral Program, Xi’an University of Science and Technology, 58, Yanta Mid. Rd, Xi’an 710054, China
    College of Energy Engineering, Xi’an University of Science and Technology, 58, Yanta Mid. Rd, Xi’an 710054, China)

  • Zhenmin Luo

    (College of Safety Science and Engineering, Xi’an University of Science and Technology, 58, Yanta Mid. Rd, Xi’an 710054, China)

  • Tao Wang

    (College of Safety Science and Engineering, Xi’an University of Science and Technology, 58, Yanta Mid. Rd, Xi’an 710054, China)

  • Fangming Cheng

    (College of Safety Science and Engineering, Xi’an University of Science and Technology, 58, Yanta Mid. Rd, Xi’an 710054, China)

  • Anning Zhou

    (College of Energy Engineering, Xi’an University of Science and Technology, 58, Yanta Mid. Rd, Xi’an 710054, China)

Abstract

To study the emission intensity of OH during H 2 /CH 4 /air mixtures explosion, experiments were performed inside a 20 L spherical closed tank. The pressure history and flame propagation characteristics of H 2 /CH 4 /air mixtures explosion were recorded and analyzed. The effects of the volume fraction of hydrogen and equivalence ratio on explosion pressure, flame radius, and emission intensity of OH were surveyed. The results show that after α > 0.6, hydrogen started to take a leading role in the explosion pressure and flame propagation of H 2 /CH 4 /air mixtures. The effect on the high equivalence ratio of H 2 /CH 4 /air mixtures is more obvious, which makes the reaction of H 2 /CH 4 /air mixtures explosion faster and more dangerous. The emission intensity of OH at 308.9 nm is strongest, with 282.8 nm being the earliest and 347.2 nm being the latest. As the volume fraction of hydrogen increases, the I max and (dI/dt) max of OH continue to increase, and at a higher equivalence ratio, the I max of OH begins to rise sharply from α = 0.6. As the equivalence ratio increases, I max and (dI/dt) max of OH increase first and then decrease. The important sources of OH emissions in the H 2 /CH 4 /air mixtures explosion are the reaction of R38 and the reverse reaction of R84.

Suggested Citation

  • Ruikang Li & Zhenmin Luo & Tao Wang & Fangming Cheng & Anning Zhou, 2025. "Emissions Characteristics of OH During H 2 /CH 4 /Air Mixtures Explosion in a 20 L Closed Tank," Energies, MDPI, vol. 18(4), pages 1-25, February.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:4:p:953-:d:1592923
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/18/4/953/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/18/4/953/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Cai, Peng & Liu, Zhenyi & Li, Pengliang & Zhao, Yao & Li, Mingzhi & Li, Ranran & Wang, Chen & Xiu, Zihao, 2023. "Effects of fuel component, airflow field and obstacles on explosion characteristics of hydrogen/methane mixtures fuel," Energy, Elsevier, vol. 265(C).
    2. Liu, Guilong & Wang, Jian & Zheng, Ligang & Pan, Rongkun & Lu, Chang & Wang, Yan & Zhao, Yongxian & Li, Yanjie, 2023. "Effect of hydrogen addition on explosion characteristics of premixed methane/air mixture under different equivalence ratio distributions," Energy, Elsevier, vol. 276(C).
    3. Wang, Shuo & Xiao, Guoqing & Feng, Yu & Mi, Hongfu, 2023. "Investigation of premixed hydrogen/methane flame propagation and kinetic characteristics for continuous obstacles with gradient barrier ratio," Energy, Elsevier, vol. 267(C).
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Wu, Junjie & Xiu, Zihao & Liu, Zhenyi & Li, Pengliang, 2024. "Effect of obstruction ratio rate of change gradients on the deflagration characteristics of H2-Air premixed gases," Energy, Elsevier, vol. 312(C).
    2. Zhang, Zixu & Wang, Zhiwu & Wei, Lisi & Qin, Weifeng & Zhao, Xiaolong & Xiao, Jingtao, 2024. "Effects of mixture initial conditions on deflagration to detonation transition enhanced by transverse jets," Energy, Elsevier, vol. 304(C).
    3. 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).
    4. Yang, Ke & Liu, Guangyu & Ji, Hong & Xing, Zhixiang & Jiang, Juncheng & Yin, Yixuan, 2024. "The effects of different equivalence ratios and initial pressures on the explosion of methane/air premixed gas in closed space," Energy, Elsevier, vol. 297(C).
    5. Cao, Jiaojiao & Wu, Jiansong & Zhao, Yimeng & Cai, Jitao & Bai, Yiping & Pang, Lei, 2023. "Suppression effects of energy-absorbing materials on natural gas explosion in utility tunnels," Energy, Elsevier, vol. 281(C).
    6. Lu, Yawei & Fan, Rujia & Wang, Zhirong & Cao, Xingyan & Guo, Wenjie, 2024. "The influence of hydrogen concentration on the characteristic of explosion venting: Explosion pressure, venting flame and flow field microstructure," Energy, Elsevier, vol. 293(C).
    7. Liu, Guilong & Wang, Jian & Zheng, Ligang & Pan, Rongkun & Lu, Chang & Wang, Yan & Zhao, Yongxian & Li, Yanjie, 2023. "Effect of hydrogen addition on explosion characteristics of premixed methane/air mixture under different equivalence ratio distributions," Energy, Elsevier, vol. 276(C).
    8. Liang, He & Yan, Xingqing & Shi, Enhua & Wang, Xinfei & Qi, Chang & Ding, Jianfei & Zhang, Lianzhuo & Chen, Lei & Lv, Xianshu & Yu, Jianliang, 2024. "Effect of hydrogen blending on ammonia/air explosion characteristics under wide equivalence ratio," Energy, Elsevier, vol. 297(C).
    9. Wang, Tao & Sheng, Yuhuai & Nan, Fan & Liu, Litao & Chen, Jian & Meng, Fanyi & Deng, Jun & Shi, Jihao & Luo, Zhenmin, 2024. "Investigation on the flame and pressure behaviors of vented hydrogen-air deflagration from a duct-connected vessel: Effects of venting diameter and static activation pressure," Energy, Elsevier, vol. 307(C).
    10. Li, Jianwei & Liu, Jie & Wang, Tianci & Zou, Weitao & Yang, Qingqing & Shen, Jun, 2024. "Analysis of the evolution characteristics of hydrogen leakage and diffusion in a temperature stratified environment," Energy, Elsevier, vol. 293(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:18:y:2025:i:4:p:953-:d:1592923. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.