A compound silica-trifluoroacetyl powder for fire suppressant: Preparation, characterization and suppression mechanism discussion

Fan, Rujia; Jiang, Yong; Qiu, Rong

doi:10.1016/j.firesaf.2020.103158

Cited by 9 publications

(3 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Through analysis of images captured during the tests, it was found that the explosion flame brightness in the presence of KHCO 3 was greater than that of KH 2 PO 4 at similar concentrations, which makes it impossible to clearly observe the effect of KHCO 3 on the C 2 H 4 explosion reaction zone. The reason for this experimental phenomenon is that the content of potassium and its compounds produced by pyrolysis of KHCO 3 particles under the same conditions is slightly larger than that of KH 2 PO 4 particles, resulting in enhanced flame emissivity and higher brightness. , Therefore, we selected KH 2 PO 4 powder to analyze the flame behavior under various experimental conditions. The flame images associated with various KHCO 3 powder concentrations in the C 2 H 4 explosion system can be found in the Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

“…The reason for this experimental phenomenon is that the content of potassium and its compounds produced by pyrolysis of KHCO 3 particles under the same conditions is slightly larger than that of KH 2 PO 4 particles, resulting in enhanced flame emissivity and higher brightness. 26 , 27 Therefore, we selected KH 2 PO 4 powder to analyze the flame behavior under various experimental conditions. The flame images associated with various KHCO 3 powder concentrations in the C 2 H 4 explosion system can be found in the Supporting Information .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Inhibition Effect of KHCO₃ and KH₂PO₄ on Ethylene Explosion

Wang

Yang

et al. 2023

ACS Omega

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Inhibition Effect of KHCO₃ and KH₂PO₄ on Ethylene Explosion

Wang

Yang

et al. 2023

ACS Omega

View full text Add to dashboard Cite

show abstract

“…Five different types of dry powders (calcium carbonate, aluminum powder, silicon dioxide, ABC powder, and BC powder) were applied to mitigate hydrogen-air deflagrations within a confined space [28,29]. Among them, silicon dioxide dry powder exhibited the most effective mitigation of hydrogen-air deflagrations, followed by calcium carbonate, ABC powder, 4 BC powder, and aluminum powder [30]. Furthermore, smaller particle size of dry powders showed better mitigation effects [31].…”

Section: Introductionmentioning

confidence: 99%