Suppression characteristics of double-layer wire mesh on wheat dust flame

Dai, Huaming; Wang, Xiaotong; Chen, Xianfeng; Xue, Nan; Hu, Ying; He, Song; Yuan, Bihe; Zhao, Qi; Dong, Zhiqiao; Pan, Yang

doi:10.1016/j.powtec.2019.09.077

Cited by 31 publications

(2 citation statements)

References 34 publications

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“…Over time, dust explosions have increasingly become a prevalent type of incident across various industrial sectors. This presents a significant menace to effective production processes and results in substantial losses in terms of both human lives and property [5][6][7]. Because of the rising frequency of dust explosion incidents, researchers have delved into the combustion mechanisms, flame propagation characteristics, and preventive technologies associated with dust explosions.…”

Section: Introductionmentioning

confidence: 99%

Effect of silver inhibition on the ceramic foam as flame suppression

Hamzah,

Kasmani,

Chandren

2024

E3S Web Conf.

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Aluminium dust explosions pose significant safety and economic challenges in various industrial processes. Due to this, the current research explores an innovative approach by inhibiting the silver nanoparticles (Ag NPs) to ceramic porous form substrate as a flame suppressant in order to mitigate the risks associated with these explosions. The antimicrobial and non-toxic qualities of silver are also attractive to be applied in medical and food technology. However, the interfacial adhesion between the metallic (nanosilver) and non-metallic (silica-based-ceramic) is still vaguely studied due to the mechanical and surface energy mismatch between the organic surface and the inorganic layers. From this study, the physicochemical and mechanical properties of the silver-coated ceramic foam were analyzed using X-ray diffraction, field emission scanning electron microscopy with energy dispersive X-ray, thermogravimetric analysis, and compression test. From the mechanical testing, it was found that the percentage increase of maximum load for silver-ceramic foam from the original ceramic foam was about 60%. The results indicate that silver-coated foam has a better compressive strength of 0.93 MPa as compared to 0.58 MPa by the original ceramic. The inhibition effect of Ag NPs powder on the explosion pressure evolution and flame spread mechanism of aluminium powder at different concentrations and particle sizes was tested using the Hartmann experimental system.

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Section: Introductionmentioning

confidence: 99%

Effect of silver inhibition on the ceramic foam as flame suppression

Hamzah,

Kasmani,

Chandren

2024

E3S Web Conf.

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“…On the other hand, Song et al [13][14][15] studied the inhibition effect of inert dust and solid particle inhibitors [16] on gas explosions, finding that particle size has a great influence on inert rock dust to inhibit gas explosions. In addition, Chen et al [17,18] studied metal foam and found that it can reduce the overpressure generated, but it has little effect on the flame tip speed and shape. Wang et al [19,20] studied the combinations of inert gas and solid inhibitors to better suppress methane explosions.…”

Section: Introductionmentioning

confidence: 99%

Mechanism Analysis of Airbag Explosion Suppression and Energy Absorption in a Flexible Explosion Suppression System

Wang

Han

et al. 2023

Fire

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The unfixed flame propagation velocity of a gas explosion and the fixed response time of explosion suppression devices are the important reasons for the poor protective effect of active explosion suppression. A flexible explosion suppression method based on buffer energy absorption is detailed in this study. The explosion suppression system consists of an explosive characteristic monitoring system, an explosion suppression agent system, and an explosion suppression airbag. An empty pipe experiment and an explosion suppression experiment with a flexible-airbag gas-explosion suppression device were conducted in a 20.5 m-long pipe with an inner diameter of 180 mm. The flame propagation velocity and maximum overpressure values were compared between the two groups of experiments. The experimental results show that the flame wave propagation can be completely suppressed by the explosion suppression device under certain pressure. The occurrence time of maximum overpressure at each pressure measuring point is also analyzed. P3 is generally later than P4, which verifies the existence of energy absorption and explosion suppression effect of airbag. Finally, the energy absorption effect of the airbag is analyzed theoretically. The shock wave overpressure calculated in the sealing limit state of the airbag is 0.3432 MPa, and the maximum error is 7.8%, which provides reliable guidance and prediction for the experimental process in the future.

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