Comprehensive dust explosion modeling

Ogle, Russell A.

doi:10.1016/b978-0-12-803771-3.00010-7

Cited by 5 publications

(6 citation statements)

References 58 publications

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“…The methods of finite elements are intensively used to assess the stressed-strained state of a mining massif. Paper [11] numerically modeled the axisymmetric problem of explosive impact on the gas-saturated mountain rock in order to intensify its degassing. However, the phenomena of fluctuations in a working's walls were not considered.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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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: Literature Review and Problem Statementmentioning

confidence: 99%

“…Equating the number of possible operations to zero, considering the required transformations, equation (11) takes the following form:…”

Section: Substantiating the Procedures For Examining The Dynamics Of Dmentioning

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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“…Taveau further illustrates the distinct combustion characteristics of metallic fuels and comments on the resultant challenges in designing effective explosion protection solutions . As shown in a multitude of extensive comprehensive works, metal dust combustion regimes are considered to be extremely dangerous hazards unless proper prevention and/or protection techniques are established. , …”

Section: Introductionmentioning

confidence: 99%

Characterization of Thermal Stability and Heat Absorption for Suppressant Agent/Combustible Dust Mixtures via Thermogravimetric Analysis/Differential Scanning Calorimetry

Reding

Shiflett

2019

Ind. Eng. Chem. Res.

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Combustible dusts continue to present a critical threat toward personnel and process equipment in a wide variety of bulk solids processing industries. The addition of noncombustible inert material to combustible dust mixtures, either through premixing or high-rate injection as the flame front begins to develop, is common practice for preventative inhibition or explosion protection via active suppression, respectively. Metal dusts in particular present an extremely reactive explosion risk due to amplified heat of combustion, burning temperature, flame speed, explosibility parameters (K St and P max ), and ignition sensitivity. Establishment of proper prevention and mitigation designs for metal fuel deflagrations has posed challenging. The aim of this paper is to propose a method for the characterization of the inhibition efficiency of five suppressant agents (sodium bicarbonate [SBC], potassium bicarbonate [PK], monoammonium phosphate [MAP], diammonium phosphate [DAP], and sodium chloride-based [Met-L-X]) when mixed with both organic (cornstarch) and metallic (zinc) fuels. For each 1:1 wt % fuel/agent mixture, thermal stability and heat absorption have been evaluated using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC).

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“…The elements required for a dust explosion include a combustible dust (e.g. from grain), an airborne dust dispersion above the minimum explosible concentration, an oxidant (e.g., oxygen in ambient air), an ignition source, and a confined area 7 . The system was not inerted, so atmospheric oxygen was sufficient to support combustion.…”

Section: Investigation and Analysismentioning

confidence: 99%

An unexpected explosion while fumigating a grain silo: It wasn't the dust

Lardinois,

Morrison,

Revez

2023

Process Safety Progress

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Large‐scale fumigation of grain silos is a strategy to mitigate infestation of the bulk material. A common fumigant precursor for grain processes is aluminum phosphide, which exothermically decomposes in the presence of moisture (from the grain or air) to the toxic fumigant: phosphine gas. To overcome the hazards of exothermic decomposition and phosphine exposure, aluminum phosphide pellets can be metered into the silo's grain feed to distribute them throughout the grain more evenly. This approach decreases the decomposition rate of aluminum phosphide, better distributes heat generation to avoid igniting grain, and sustains a phosphine gas concentration well below the pyrophoric concentration—all while achieving the fumigation objectives. During a fumigation activity, a large explosion occurred within a group of silos at a grain elevator complex. Dust explosions are a common hazard for grain handling facilities, but this incident was caused by the autoignition of a phosphine gas cloud inside the conveyor tunnels. It was only through post‐incident evaluations of the grain flow dynamics and pellet addition activities that a gap between the desired pellet distribution and the incident conditions was identified. As a result, a new insight into bulk grain handling and safe fumigation was developed.

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Comprehensive dust explosion modeling

Cited by 5 publications

References 58 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

Characterization of Thermal Stability and Heat Absorption for Suppressant Agent/Combustible Dust Mixtures via Thermogravimetric Analysis/Differential Scanning Calorimetry

An unexpected explosion while fumigating a grain silo: It wasn't the dust

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