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Volume 36 Issue 6
Dec 2022
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Chinese Journal of High Pressure Physics  > 2022  >  36(6): 065201.
XIA Yu, CHENG Yangfan, HU Fangfang, WANG Rui, ZHU Shoujun, SHEN Zhaowu. Inhibition Characteristics of Typical Solid Explosion Suppressors on Acetylene-Air Explosion[J]. Chinese Journal of High Pressure Physics, 2022, 36(6): 065201. doi: 10.11858/gywlxb.20220580
Citation: XIA Yu, CHENG Yangfan, HU Fangfang, WANG Rui, ZHU Shoujun, SHEN Zhaowu. Inhibition Characteristics of Typical Solid Explosion Suppressors on Acetylene-Air Explosion[J]. Chinese Journal of High Pressure Physics, 2022, 36(6): 065201. doi: 10.11858/gywlxb.20220580
shu

Inhibition Characteristics of Typical Solid Explosion Suppressors on Acetylene-Air Explosion

doi: 10.11858/gywlxb.20220580
  • 1.

    School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China

  • 2.

    School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, Anhui, China

  • 3.

    School of Engineering Science, University of Science and Technology of China, Hefei 230027, Anhui, China

  • Received Date: 09 May 2022
  • Rev Recd Date: 28 May 2022
    • Available Online: 11 Oct 2022
  • Issue Publish Date: 05 Dec 2022
    Abstract
  • In order to reveal the inhibition effect of solid explosion suppressors on acetylene-air premixed gas explosion, a 20 L spherical explosion test system was used to study the impact of typical solid explosion suppressors of SiO2, Al(OH)3 and NaHCO3 on the explosion characteristics of premixed acetylene-air gas. The results showed that the low-concentration SiO2 (less than 300 g/m3) can promote the explosion intensity of acetylene-air, while the high-concentration SiO2 has a significant explosion inhibition effect. The explosion inhibition effect of SiO2, Al(OH)3 and NaHCO3 on acetylene-air explosion increases in turn. The explosion inhibition effects of SiO2 and Al(OH)3 are dependent on the heat absorption and decomposition of particles (generating Al2O3 and H2O). By contrast, the explosion inhibition effect of NaHCO3 is dependent on the gas-solid-liquid three-phase suppression characteristics as the decomposition of NaHCO3 produced Na2CO3, H2O and CO2. Therefore, the NaHCO3 possessed the optimal effect of explosion inhibition.

     

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