Dust explosions: A serious concern

Cloney, Chris T.; Snoeys, Jef

doi:10.1016/bs.mcps.2019.04.001

Cited by 16 publications

(9 citation statements)

References 11 publications

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“…In addition, there was an increase in the load on longwalls while the intensification of layers' processing led to a greater methane release at extracting sites, as well as to an increase in the dust fraction in the volume of coal chipped off a layer. Thus, there are objective conditions for the growth of the threat of gas-dust explosions inside the mining workings of coal mines both in Ukraine and other coal-mining countries, as well as in other industries [1,2]. Most of the dust explosions inside underground workings are complicated by fires, for example, an accident of this kind in 1992 at the Donetsk mine named after O. O. Skochynsʹkyi has lasted up to now, covering an underground area of more than two square kilometers.…”

Section: Introductionmentioning

confidence: 99%

The deformation dynamics of the experimental adit's material during a coal dust explosion

Kostenko

Liashok

Zavialova

et al. 2020

EEJET

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Section: Introductionmentioning

confidence: 99%

The deformation dynamics of the experimental adit's material during a coal dust explosion

Kostenko

Liashok

Zavialova

et al. 2020

EEJET

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“…Eqs. (2)(3)(4)(5)(6) are discretized utilizing a first-order upwind scheme for convective terms and a second-order central differencing scheme for diffusion terms. Gradient terms are evaluated using a cell-limited scheme with cubic interpolation.…”

Section: Numerical Schemes and Grid Dependency Testmentioning

confidence: 99%

“…When explosive combustion of dust clouds takes place inside process equipment, the pressure inside may rise rapidly often producing catastrophic damage to facilities and causing largescale loss of life [5]. For example, a total of 281 dust explosions took place in the United States between 1980 and 2005, resulting in 119 fatalities and 718 injuries [6]. More recently, in only the first half of 2020, 26 dust explosions were reported worldwide [7].…”

Section: Introductionmentioning

confidence: 99%

CFD simulations of turbulent dust dispersion in the 20 L vessel using OpenFOAM

Islas,

Fernández,

Betegón

et al. 2022

Preprint

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Dust explosions are among the most hazardous accidents affecting industrial facilities processing particulate solids. Describing the severity parameters of dust clouds is critical to the safety management and risk assessment of dust explosions. These parameters are determined experimentally in a 20L spherical vessel, following the ASTM E1226 or UNE 14034 standards. Since their reproducibility depends on the levels of turbulence associated with the dust cloud, a computational model of the multi-phase (gas-solid) flow is used to simulate the dispersion process with the open-source CFD code OpenFOAM. The model is successfully validated against experimental measurements from the literature and numerical results of a commercial CFD code. In addition, this study considers the impact of particle size on the turbulence of the carrier phase, suggesting that particles attenuate its turbulence intensity. Moreover, the model predicts well the formation of a two-vortex flow pattern, which has a negative impact on the distribution of the particle-laden flows with p ≤ 100 m, as most of the particles concentrate at the near-wall region. Contrarily, an improved homogeneity of dust cloud is observed for a case fed with larger particles ( p = 200 m), as the increased inertia of these particles allows them to enter into the re-circulation regions.

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“…According to the Japan Institute for Occupational Safety and Health (JNIOSH), metal, wood, and plastic dust account for about 85% of the dust explosions. [29]. According to the distribution of combustible dust explosions, food products, wood, and metals account for more than 65% of explosions, and plastic accounts for 14%.…”

Section: Dust Explosion By Ammonium Perchloratementioning

confidence: 99%

“…Detailed statistics information is provided in Supplementary Information (SI.1 and SI.2). [29]. According to the distribution of combustible dust explosions, food products, wood, and metals account for more than 65% of explosions, and plastic accounts for 14%.…”

Section: Dust Explosion By Ammonium Perchloratementioning

confidence: 99%

Case Studies for Dangerous Dust Explosions in South Korea during Recent Years

et al. 2019

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Despite recent extensive research and technical development to prevent and mitigate dust explosions, processes that produce and handle combustible materials in the form of powders and dusts, either as a main product or as an undesired by-product, have become a constant dust explosion threat as they become more sophisticated and complicated. This study analyzed the characteristics of 53 dust explosions that occurred in South Korea over the last 30 years, and investigated the differences of dust explosions that happened in various countries, such as Japan, the United States, the United Kingdom, and France. In addition, case studies showed the severity of dust explosions occurring in South Korea. Through the special focus on the three most recent years of dust explosions, the causes and processes of the accidents were identified. Analyses of dust explosions in South Korea show that they were mainly caused by organic matter and metal, and, unfortunately, dust explosions occurred repeatedly during grinding, mixing, and injection of powder materials into facilities. No reported accidents occurred during the production processes of wood or paper during the last three years. Taking these characteristics into account, effective ways to prevent or mitigate dust explosions at workplaces where many dust explosions occurred were suggested.

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Dust explosions: A serious concern

Cited by 16 publications

References 11 publications

The deformation dynamics of the experimental adit's material during a coal dust explosion

The deformation dynamics of the experimental adit's material during a coal dust explosion

CFD simulations of turbulent dust dispersion in the 20 L vessel using OpenFOAM

Case Studies for Dangerous Dust Explosions in South Korea during Recent Years

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