Inhibition of Four Inert Powders on the Minimum Ignition Energy of Sucrose Dust

Zhong, Yuankun; Li, Xiaoquan; Jiang, Juju; Liang, Siting; Yang, Zhiwen; Soar, Jeffrey

doi:10.3390/pr10020405

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…The study also found that different types of inert dust have different explosion suppression effects, but the cost of inert dust also needs to be considered when selecting an efficient inert dust to suppress explosions. Even for the same type of inert dust, if its particle size, degree of dispersion, humidity, and spreading range are different, the effect of suppressing explosions is also different [25][26][27][28][29] . Inert dust with better explosion suppression effect usually not only does not participate in the explosion, but also absorb heat during the suppression process, and can release some gases and solid products that help to suppress the explosion, so as to achieve better explosion suppression effect 30,31 .…”

Section: Openmentioning

confidence: 99%

Influencing factors of coking coal dust explosion pressure and flame and effect of inert dust on its explosion suppression

Liu

Zhao

Tian

et al. 2022

Sci Rep

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Coking coal is a precious resource in the world and an important raw material for the production of steel, but it is easy to cause explosion accidents in the process of coking coal mining, which is very detrimental to safe production. In order to reveal the influencing factors of coking coal dust explosion intensity and the suppression effect of inert dust on coking coal dust explosion, an experimental study was carried out in this paper. The results show that the particle size and the mass concentration of coal dust have a great influence on the explosion pressure and flame. By analyzing the suppression effects of NaCl, KCl, and NH4H2PO4 on coking coal dust explosion, it is got that NH4H2PO4 has the best explosion suppression effect. When the mass percentage of NH4H2PO4 mixed into coking coal dust increases to 60%, the maximum explosion pressure decreases by 0.47 MPa, and the maximum flame length decreases by 0.50 m. As the particle size of NH4H2PO4 decreases, the explosion intensity continue to decrease. When the particle size of NH4H2PO4 is 0 ~ 25 μm, and the mass percentage of NH4H2PO4 mixed into coking coal dust is 50%, the explosion doesn’t occur anymore.

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Section: Openmentioning

confidence: 99%

Influencing factors of coking coal dust explosion pressure and flame and effect of inert dust on its explosion suppression

Liu

Zhao

Tian

et al. 2022

Sci Rep

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show abstract

“…After that, the flame temperature will rise rapidly [14]. During the emergence and propagation of the flame, heat transfer plays a major role [16]. After the explosion, the explosion pressure can be reckoned according to the residual gas of the explosive reaction [13].…”

Section: Introductionmentioning

confidence: 99%

Study of Explosion Characteristics and Mechanism of Sucrose Dust

Liang

Jiang

et al. 2023

Processes

Self Cite

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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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Prevention and suppression of coal dust explosion in underground coal mines: Role of rock dust type, particle size, proportion, concentration, and thermal properties

Sahu,

Prasad Mishra

2024

Advanced Powder Technology

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Inhibition of Four Inert Powders on the Minimum Ignition Energy of Sucrose Dust

Cited by 5 publications

References 32 publications

Influencing factors of coking coal dust explosion pressure and flame and effect of inert dust on its explosion suppression

Influencing factors of coking coal dust explosion pressure and flame and effect of inert dust on its explosion suppression

Study of Explosion Characteristics and Mechanism of Sucrose Dust

Prevention and suppression of coal dust explosion in underground coal mines: Role of rock dust type, particle size, proportion, concentration, and thermal properties

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