On the explosion and flammability behavior of mixtures of combustible dusts

Sanchirico, Roberto; Russo, Paola; Sarli, Valeria Di; Benedetto, Almerinda Di

doi:10.1016/j.psep.2014.09.007

Cited by 38 publications

(6 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lycopodium particles have been introduced as a reasonable reference for volatile biomass fuels due to its excellent dispersibility and flammability [12]. Lycopodium can efficiently be used as a reference fuel for testing different biomass-fueled systems and recognizing the combustion processes in the systems prior to industrial scale-up [12,29,30]. A lycopodium particle typically contains almost 50% fat oil, 2% sucrose and 24% sporopollenin [12].…”

Section: Lycopodium Characteristicsmentioning

confidence: 99%

“…Sanchirico et al [29] evaluated the flammability and combustion behavior of several complex hybrid mixtures, e.g., mixtures of nicotinic acid, lycopodium and methane, at different dust concentrations. In another study, Sanchirico et al [30] experimentally demonstrated the combustion and flammability behavior of combustible dust mixtures including lycopodium, Nicotinic acid and Ascorbic acid.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mathematical Modeling of Non-Premixed Laminar Flow Flames Fed with Biofuel in Counter-Flow Arrangement Considering Porosity and Thermophoresis Effects: An Asymptotic Approach

et al. 2018

View full text Add to dashboard Cite

Due to the safe operation and stability of non-premixed combustion, it can widely be utilized in different engineering power and medical systems. The current paper suggests a mathematical asymptotic technique to describe non-premixed laminar flow flames formed in organic particles in a counter-flow configuration. In this investigation, fuel and oxidizer enter the combustor from opposite sides separately and multiple zones including preheating, vaporization, flame and post-flame zones were considered. Micro-sized lycopodium particles and air were respectively applied as a biofuel and an oxidizer. Dimensionalized and non-dimensionalized mass and energy conservation equations were determined for the zones and solved by Mathematica and Matlab software by applying proper boundary and jump conditions. Since lycopodium particles have numerous spores, the porosity of the particles was involved in the equations. Further, significant parameters such as lycopodium vaporization rate and thermophoretic force corresponding to the lycopodium particles in the solid phase were examined. The temperature distribution, flame sheet position, fuel and oxidizer mass fractions, equivalence ratio and flow strain rate were evaluated for the counter-flow non-premixed flames. Ultimately, the thermophoretic force caused by the temperature gradient at different positions was computed for several values of porosity, fuel and oxidizer Lewis numbers.

show abstract

Section: Lycopodium Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Non-Premixed Laminar Flow Flames Fed with Biofuel in Counter-Flow Arrangement Considering Porosity and Thermophoresis Effects: An Asymptotic Approach

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The addition of hydrogen to fuels (i.e., the hydrogen‐enrichment) strongly induces non‐linear (i.e., synergistic) effects in terms of burning velocity, 14 interaction of the propagating flame with the turbulent flow field 15–16 ; thus, explosion behavior 17–18 . Furthermore, strong synergistic effects also characterize both flammability and explosibility of dust mixtures 19–20 and dust‐gas (i.e., hybrid) systems 19,21 …”

Section: Introductionmentioning

confidence: 99%

Dust cloud explosion characteristics and mechanisms in MgH₂‐based hydrogen storage materials

et al. 2021

View full text Add to dashboard Cite

The mechanisms involved in premixed magnesium and hydrogen hybrid and synthetic MgH2 dust cloud explosions were investigated. The results revealed that trace amounts of H2 in Mg explosions can markedly increase explosion severity. Furthermore, H2 addition can weaken the influence of oxygen deficiency on Mg explosion. Moreover, the explosion intensity of synthetic MgH2 was far stronger than that of premixed Mg/H2 mixture or Mg alone because the vacancy defects in Mg and H atoms can form after dehydrogenation of MgH2, which caused that Mg and H2 are prone to oxidation and nitrification in air atmosphere at a low temperature, thereby promoting the explosion. This demonstrates that the explosion risk of MgH2 (even other H2 storage materials) is related to its H2 storage capacity and dehydrogenation temperature. Therefore, for H2 storage materials, the better H2 storage performances can exhibit higher explosion risks.

show abstract

“…Di Benedetto et al 11 computed the minimum ignition temperature for polyethylene dust at different dust concentration in air. Sanchirico et al 12 conducted the ignitability and explosibility tests for three dusts (Lycopodium, Nicotinic acid, and Ascorbic acid) by finding their minimum explosive concentration, minimum ignition energy, maximum rate of pressure rise and maximum pressure at different dust concentrations. Danzi et al 13 conducted various tests on wood char to find out minimum ignition energy, limiting oxygen concentration and auto ignition temperature by calculation ignition probability.…”

Section: Introductionmentioning

confidence: 99%

Experimentation on minimum ignition temperature for boron blended fireworks flash powder dust cloud at normal and inert environmental conditions

Arumugachamy¹,

Pandian²,

Jeyasubramanian³

2021

Fire and Materials

View full text Add to dashboard Cite

Summary In fireworks industries, mixing and filling of chemicals are being done manually and hence, dust formation is inevitable. Due to inherent nature of ingredients like aluminium metal powder, which has more combustible and the possibilities of dust explosion are merely high. Nowadays, the use of boron as a replacement of aluminium in firecracker mixtures is being researched upon. Hence, this paper aims at measuring the minimum ignition temperature (MIT) of existing and boron blended firework composition by using Godbert Greenwald furnace. Nowadays, many firework industries are employing automation. In such places, by limiting the level of oxygen supply with Nitrogen gas, the accidents can be avoided. Hence, the limiting oxygen concentration (LOC) is also measured. It has been concluded that the probability of ignition is higher when the replacement level of aluminium with boron is less than 70% at a concentration of 1456 g/m3 with less than 75% inert gas level. The safe margin has been found which will be useful for risk assessment study.

show abstract

On the explosion and flammability behavior of mixtures of combustible dusts

Cited by 38 publications

References 22 publications

Mathematical Modeling of Non-Premixed Laminar Flow Flames Fed with Biofuel in Counter-Flow Arrangement Considering Porosity and Thermophoresis Effects: An Asymptotic Approach

Mathematical Modeling of Non-Premixed Laminar Flow Flames Fed with Biofuel in Counter-Flow Arrangement Considering Porosity and Thermophoresis Effects: An Asymptotic Approach

Dust cloud explosion characteristics and mechanisms in MgH₂‐based hydrogen storage materials

Experimentation on minimum ignition temperature for boron blended fireworks flash powder dust cloud at normal and inert environmental conditions

Contact Info

Product

Resources

About

On the explosion and flammability behavior of mixtures of combustible dusts

Cited by 38 publications

References 22 publications

Mathematical Modeling of Non-Premixed Laminar Flow Flames Fed with Biofuel in Counter-Flow Arrangement Considering Porosity and Thermophoresis Effects: An Asymptotic Approach

Mathematical Modeling of Non-Premixed Laminar Flow Flames Fed with Biofuel in Counter-Flow Arrangement Considering Porosity and Thermophoresis Effects: An Asymptotic Approach

Dust cloud explosion characteristics and mechanisms in MgH2‐based hydrogen storage materials

Experimentation on minimum ignition temperature for boron blended fireworks flash powder dust cloud at normal and inert environmental conditions

Contact Info

Product

Resources

About

Dust cloud explosion characteristics and mechanisms in MgH₂‐based hydrogen storage materials