Minimum ignition energy of mixtures of combustible dusts

Hosseinzadeh, Seyedehsepideh; Norman, Frederik; Verplaetsen, Filip; Berghmans, Jan; Bulck, Eric Van den

doi:10.1016/j.jlp.2015.05.012

Cited by 31 publications

(8 citation statements)

References 8 publications

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“…After the addition of the inert powder, the MIE of sucrose increased, and with the increase in mass fraction of the inert powder, the MIE of all four groups of dusts increased monotonically. The data curves in the last interval all showed a sharp increase, reaching the critical state of fully suppressing the sucrose dust, which indicated that NaHCO 3 , NH 4 H 2 PO 4 , NaCl and Al(OH) 3 all have an inhibitory effect on the MIE of sucrose dust [27,28].…”

Section: Effect Of Inert Powder Of Mass Concentration On Mie Of Sucro...mentioning

confidence: 91%

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

Zhong

Jiang

et al. 2022

Processes

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In order to evaluate the effect of inert powder on the ignition sensitivity of sucrose dust, this study investigated the effects of NaHCO3, NaCl, NH4H2PO4 and Al(OH)3 on the minimum ignition energy (MIE) of sucrose dust. The results showed that all four different inert powders inhibited the MIE of sucrose dust, and all of them showed a trend that the smaller the particle size of the inert powders, the better the inhibition effect. The inhibition effect was ranked as NaHCO3 > NH4H2PO4 > NaCl > Al(OH)3. NaHCO3 and NH4H2PO4 had both physical and chemical inhibition effects, which were better compared to NaCl and Al(OH)3, which had only physical inhibition effects. Analysis of the flame images showed that the inert powder slowed down the combustion of the sucrose dust flame and reduced the flame height. No flame appeared in the region of higher inert powder concentration.

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Section: Effect Of Inert Powder Of Mass Concentration On Mie Of Sucro...mentioning

confidence: 91%

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

Zhong

Jiang

et al. 2022

Processes

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“…Differences in the ignition temperatures of these samples were not confirmed (Beliaková et al, 2009) [65]. Determination of the minimum ignition temperature of dust layer was very clearly described and explained by Hosseinzadeh et al [66], Fernandez-Anez et al [67] and Danzi et al [68].…”

Section: Monitoring Of Hot Surface Ignitionmentioning

confidence: 99%

Ignition of Deposited Wood Dust Layer by Selected Sources

Tureková

Marková

2020

Applied Sciences

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The main waste of wood sanding technology is wood dust. The formation of wood dust affects its behaviour. Wood dust can be in a turbulent form and behaves explosively or in a settled form where it becomes flammable. Dust particles are barely detectable by the naked eye, wood dust still presents substantial health, safety, fire and explosion risks to employees. This article deals with the evaluation of ignition temperature and surface temperature of deposited wood dust samples by selected ignition sources. The influence of selected physical properties of wood dust, the size of the contact area between the ignition source and the combustible material, the spatial arrangement during the ignition and the application time of the ignition source are analysed. The paper describes the behaviour of a 15 mm deposited layer of wood dust of spruce (Picea abies L.), beech (Fagus silvatica L.). oak (Quercus petraea Liebl.) caused by three potential ignition sources—a hot surface, an electric coil and a smouldering cigarette. Prior to the experimental determination of the ignition temperature, dust moisture content which did not significantly affect the ignition phase of the samples, as well as sieve analysis of tested samples were determined. The lowest minimum ignition temperature on the hot plate, as an important property of any fuel, because the combustion reaction of the fuel becomes self-sustaining only above this temperature, was reached by the oak dust sample (280 °C), the highest by the spruce dust sample (300 °C). The ignition process of wood dust was comparable in all samples, differing in the ignition time and the area of the thermally degraded layer. The least effective ignition source was a smouldering cigarette.

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“…Moreover, hot surfaces can be generated accidentally by overheating of equipment, metal parts. [14]. If a cloud of combustible dust is generated in an uncontrolled manner in the vicinity of a hot surface temperature which is higher than the minimum ignition temperature, the result can be an explosion.…”

Section: Introductionmentioning

confidence: 99%

Determination of flammability parameters for organic waste resulting from the processing of sunflower seeds

Szollosi-Moța¹,

Prodan²,

Nălboc³

2022

MATEC Web Conf.

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Agricultural waste is found in abundance in the environment, whether it is the plant itself represented by the stem, leaf or seeds that have been peeled or other waste. By drying and crushing the residues from the plants, organic powders will be formed with a variable granulation and humidity. Through the processing of oilseeds such as sunflower seeds, significant amounts of waste from seeds result. Seed shells resulting from technological processes crumble, forming fine powders, whose granulations are different. A certain percentage will be 63μm or smaller and if those fine powders are mixed with air can form clouds with explosive properties. The purpose of this paper was to determine the minimum ignition layer and cloud temperatures. Experimental determination of flammability parameters is particularly important in order to take the proper safety measures so that accidents can be avoided.

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Minimum ignition energy of mixtures of combustible dusts

Cited by 31 publications

References 8 publications

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

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

Ignition of Deposited Wood Dust Layer by Selected Sources

Determination of flammability parameters for organic waste resulting from the processing of sunflower seeds

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