Effect of hydrogen fraction and initial pressure on the inhibition of methane/hydrogen/air explosions by NaHCO3

Xu, Mengtao; Zheng, Ligang; Wang, Jian; Wang, Xi; Li, Yanfeng; Tang, Shuaiyong; Zhang, Shunrui; Li, Hao

doi:10.1016/j.fuel.2024.131273

Fuel

2024

DOI: 10.1016/j.fuel.2024.131273

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Effect of hydrogen fraction and initial pressure on the inhibition of methane/hydrogen/air explosions by NaHCO3

Mengtao Xu,

Ligang Zheng,

Jian Wang

et al.

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2024

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Cited by 2 publications

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Inhibitory effect and mechanism analysis of modified coal gangue powder on the methane–air explosion

Yang,

Li,

et al. 2024

Asia-Pacific J Chem Eng

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The application of industrial solid waste coal gangue (CG) in gas explosion suppression is explored, which opens up a new way for the resource utilization of CG. Two modified CG anti‐explosion agents, first‐grade modified CG (RCG) and second‐grade modified CG (MCG), were prepared by roasting activation and acid–base synergistic excitation. The explosion suppression performance of CG, RCG, and MCG was investigated through a 2.5 L semi‐closed explosion pipe. The experimental results were compared and analyzed, and their pyrolysis characteristics, phase composition, and particle size were analyzed to reveal their explosion suppression mechanism. It was proved that MCG had the best explosion suppression effect. Under the condition of 9.5% methane–air, it was found that the explosion suppression effect was most significant when the powder mass of the three powders was 300, 360, and 360 mg, respectively. The peak explosion overpressure is reduced by 10.51%, 21.96%, and 32.66%, respectively, and the peak arrival time of flame velocity is extended by .14 times, .20 times, and 1.15 times, respectively. MCG can effectively inhibit methane explosion utilizing physical and chemical synergistic heat absorption, porous structure formation barrier, heat isolation, oxygen dilution, adsorption, and capture of free radicals.

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Inhibitory effect and mechanism analysis of modified coal gangue powder on the methane–air explosion

Yang,

Li,

et al. 2024

Asia-Pacific J Chem Eng

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Experimental study on the inhibition of hydrogen deflagration by flame retardant compounded ultrafine dry powder fire extinguishing media containing magnesium-aluminum hydrotalcite

Guo,

Xue,

Chen

et al. 2024

International Journal of Hydrogen Energy

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Effect of hydrogen fraction and initial pressure on the inhibition of methane/hydrogen/air explosions by NaHCO3

Cited by 2 publications

References 60 publications

Inhibitory effect and mechanism analysis of modified coal gangue powder on the methane–air explosion

Inhibitory effect and mechanism analysis of modified coal gangue powder on the methane–air explosion

Experimental study on the inhibition of hydrogen deflagration by flame retardant compounded ultrafine dry powder fire extinguishing media containing magnesium-aluminum hydrotalcite

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