Study of Explosion Characteristics of the Wheat Flour Dust Clouds in Dependence of the Particle Size Distribution

Kuracina Richard (), Szabová Zuzana () and Buranská Eva ()
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Kuracina Richard: Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Integral Safety, Ulica Jána Bottu 2781/25, 917 24Trnava, Slovakia
Szabová Zuzana: Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Integral Safety, Ulica Jána Bottu 2781/25, 917 24Trnava, Slovakia
Buranská Eva: Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Integral Safety, Ulica Jána Bottu 2781/25, 917 24Trnava, Slovakia

Research Papers Faculty of Materials Science and Technology Slovak University of Technology, 2019, vol. 27, issue 44, 65-71

Abstract: Fire protection is an important part of the industry where flammable and explosive dusts are found. Production, storage and transport of food powders such as flour can be very dangerous in terms of explosiveness. The article deals with the measurement of explosion characteristics of wheat flour dust. The measurements were carried out according to EN 14034-1+A1:2011 Determination of explosion characteristics of dust clouds. Part 1: Determination of the maximum explosion pressure pmax of dust clouds and the maximum rate of explosion pressure rise according to EN 14034-2+A1:2012 Determination of explosion characteristics of dust clouds - Part 2: Determination of the maximum rate of explosion pressure rise (dp/dt)max of dust clouds. A sample of wheat flour with a median particle size 84 μm exhibits the maximum explosion pressure 7.00 bar at the concentration of 600 g.m−3 and then explosion constant is 16.9 bar.s−1.m. A sample of wheat flour with a median particle size 50 μm exhibits the maximum explosion pressure 7.97 bar at the concentration of 1000 g.m−3 and the explosion constant 54.9 bar.s−1.m.Based on the results of the measurements, we found that the particle size distribution has a significant influence on the explosion parameters of the wheat flour samples.

Keywords: Wheat flour dust clouds; explosion characteristic; maximum explosion pressure; maximum rate of explosion pressure rise (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:vrs:repfms:v:27:y:2019:i:44:p:65-71:n:7

DOI: 10.2478/rput-2019-0007

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