Characteristics of wheat dust flame with the influence of ceramic foam

Zhao, Qi; Dai, Huaming; Chen, Xianfeng; Huang, Chuyuan; Zhang, Hongming; Li, Yi; He, Song; Yuan, Bihe; Pan, Yang; Zhu, Huiwei; Liang, Guangqian; Qian, Zhendong

doi:10.1016/j.apt.2020.07.003

Cited by 12 publications

(2 citation statements)

References 49 publications

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“…As Ciccarelli et al [38] explained, the porous media extracts energy from the passing flame, thereby reducing the flame temperature and hence quenching it. The unique porous structure of ceramic foam divides the space into several small areas, which will divide the deflagration flame into several small flames [39], thereby dispersing the energy generated by deflagration and weakening the combustion reaction. Ceramic foam, particularly made of alumina possesses good heat resistance and heat insulation properties.…”

Section: Explosion Characteristics Of Nano-aluminium Powder With Ceramicmentioning

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: Explosion Characteristics Of Nano-aluminium Powder With Ceramicmentioning

confidence: 99%

Effect of silver inhibition on the ceramic foam as flame suppression

Hamzah,

Kasmani,

Chandren

2024

E3S Web Conf.

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“…The explosive characteristics of metal dust (such as aluminum dust, and magnesium dust) [17][18][19] and coal dust [20,21] have been investigated by many scholars. There have been studies on the explosive characteristics of corn dust [22,23] and wheat flour [24][25][26]. However, a very small number of people have analyzed the explosive mechanism of dust from the perspective of energy transmission.…”

Section: Introductionmentioning

confidence: 99%

Study of Explosion Characteristics and Mechanism of Sucrose Dust

Liang

Jiang

et al. 2023

Processes

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In order to investigate the explosion mechanism of sucrose in the air atmosphere, the explosion intensity under different ignition delay times (IDT), powder input pressures (PIP), and concentrations were studied using a 20L-sphere. The sucrose particles were analyzed in a synchronized thermal analyzer (STA) and scanning electron microscope (SEM). The results are as follows: 1. The DSC curve has two endothermic peaks and one exothermic peak, respectively at T = 180.5 ℃, 510.2 ℃ and 582.6 ℃. 2. The explosion intensity varies with the experiment conditions. The maximum explosion pressure (Pmax) appears when IDT = 90 ms, PIP = 1.5 MPa and concentration = 625 g/m3. 3. The explosive mechanism is a homogeneous combustion mechanism based on particle surface pyrolysis and volatilization. Because of the decomposition, H2, CO, furfural, and other flammable gas-phase products are released, then surface burn appears, which leads to the crystal rupture on account of thermal imbalance, resulting in multiple flame points and a chain explosion. As the temperature of the 20L-sphere rises, more explosive products are released, which causes a rapidly expanding explosion and eventually forms the explosion. This paper can be used as a reference for the prevention of explosion accidents in sucrose production processing.

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