Producing and properties of zinc dust flames

Poletaev, N. I.; Khlebnikova, M. Y.; Khanchych, Kateryna

doi:10.1080/00102202.2018.1430029

Cited by 4 publications

(5 citation statements)

References 15 publications

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“…The zinc combustion mechanism is distinct in comparison to other pure metals, in that flame propagation occurs exclusively in the liquid phase. 29 Therefore, the combustion region of interest for zinc powder can be narrowed to the temperatures immediately succeeding the onset of melting, from approximately 420 to 750 °C, as shown by TGA and DSC analysis in Figures 4 and 5, respectively. On the basis of the DSC profile, the majority of the heat emitted during oxidation occurs immediately after the endotherm of melting (heat input required for the phase transition), which confirms that zinc combustion takes place in the liquid phase.…”

Section: Resultsmentioning

confidence: 99%

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

Section: Industrial and Engineering Chemistry Researchmentioning

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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“…Dust dispersion system mainly includes four types. The first is a piston adjusted by an electric actuator [44,45,[92][93][94], the second is a disk-rotation system [95,96], the third is a reservoir connected to depressurized ejector nozzle [97], and the fourth is a series of gas fluidization devices [98,99]. The piston feeder (figure 10(a)) is filled with metal powders which could be injected into the dispersal chamber and the dust is dispersed by a cylindrical jet.…”

Section: Experiments Setups To Produce Stable Metal Dust Flamesmentioning

confidence: 99%

“…The mass feeding rate could be regulated by the depressurization degree, but is not as accurate as the first two systems. For the fourth type, the common point is that powder is carried by a gas flow and both the feeding rate and flow rate [95], (c) counterflow burner [103], and (d) tubes and channels [49].…”

Section: Experiments Setups To Produce Stable Metal Dust Flamesmentioning

confidence: 99%

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Combustion diagnostics of metal particles: a review

Fan¹,

Liu²,

Yu³

2023

Meas. Sci. Technol.

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Metal fuel is one of the attractive alternative fuels for its high energy density and zero carbon emission. In the past, they were often used as additives in fireworks and propellants. More attentions have been paid to metal fuels as the environmental issue and energy dilemma become increasingly severe. Ongoing efforts have been devoted to both modelling and experimental studies of metal fuel combustion. This review mainly focuses on the experimental progress on the combustion of micron-scale metal fuels during the past three decades. The experimental setups and the combustion diagnostics techniques used for single particle combustion and metal dust flames have significant distinctions, so they have been summarized separately. Those setups to produce single particle flames or metal dust flames are discussed in terms of their structure, scope of application, advantages and disadvantages. The diagnostics techniques are classified according to the physical parameters that are commonly adopted to characterize the metal particle combustion including burn time, temperature, particle size, dust concentration and burning velocity. Both online and offline measurement techniques are investigated in detail focusing on the measurement principle, system configuration and uncertainty analysis. Finally, the review is concluded with some unresolved problems in the field of metal particles combustion diagnostics, and provides insights into promising future research directions.

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Combustion of Iron Particles Suspension in Laminar Premixed and Diffusion Flames

Poletaev

Khlebnikova

2020

Combustion Science and Technology

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Producing and properties of zinc dust flames

Cited by 4 publications

References 15 publications

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

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

Combustion diagnostics of metal particles: a review

Combustion of Iron Particles Suspension in Laminar Premixed and Diffusion Flames

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