Flame inhibition by aqueous solution of Alkali salts in methane and LPG laminar diffusion flames

Badhuk, Pabitra; Ravikrishna, RV

doi:10.1016/j.firesaf.2022.103586

Cited by 9 publications

(2 citation statements)

References 63 publications

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“…Since P-containing compounds have been also found useful as flame inhibition products, we speculate that a small amount of P-containing components may have been involved in the reaction process. According to the literature, the inhibition effect of KHCO 3 is greater than that of KH 2 PO 4 , which indicates that the P-containing components have no significant explosion inhibition effect. Due to the lack of detailed KH 2 PO 4 reaction kinetic equations and thermodynamic parameters, the chemical inhibition mechanism of the two powders should be further studied in the future.…”

Section: Mechanistic Analysis Of the C2h4 Explosion Inhibitionmentioning

confidence: 98%

“…17 KH 2 PO 4 powder proved to be the best explosion inhibitor for the C 2 H 4 system, 20 its performances against other traditional alkali metal inhibitors (i.e., KHCO 3 or NaHCO 3 ) have not been studied yet. Since the explosion inhibition characteristics of KHCO 3 in the flammable gas systems are generally better than those of NaHCO 3 , 21 we selected KHCO 3 and KH 2 PO 4 powder inhibitors in this study in order to explore more ideal C 2 H 4 explosion inhibitors.…”

Section: Introductionmentioning

confidence: 99%

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Inhibition Effect of KHCO₃ and KH₂PO₄ on Ethylene Explosion

Wang

Yang

et al. 2023

ACS Omega

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The explosion risk of ethylene (C2H4) seriously hinders safe development of its production and processing. To reduce the harm caused by C2H4 explosion, an experimental study was conducted to assess the explosion inhibition characteristics of KHCO3 and KH2PO4 powders. The experiments were conducted based on the explosion overpressure and flame propagation of the 6.5% C2H4–air mixture in a 5 L semi-closed explosion duct. Both the physical and chemical inhibition characteristics of the inhibitors were mechanistically assessed. The results showed that the 6.5% C2H4 explosion pressure (P ex) decreases by increasing the concentration of KHCO3 or KH2PO4 powder. The inhibition effect of KHCO3 powder on the C2H4 system explosion pressure was better than that of the KH2PO4 powder under similar concentration conditions. Both powders significantly affected the flame propagation of the C2H4 explosion. Compared with KH2PO4 powder, KHCO3 powder had a better inhibition effect on the flame propagation speed, but its ability to reduce the flame luminance was less than KH2PO4 powder. Finally, the inhibition mechanism(s) of KHCO3 and KH2PO4 powders were revealed based on the powders’ thermal characteristics and gas-phase reaction.

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Section: Mechanistic Analysis Of the C2h4 Explosion Inhibitionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%