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  1. bookVolume 27 (2019): Issue 44 (June 2019)
Research Papers Faculty of Materials Science and Technology Slovak University of Technology's Cover Image
Research Papers Faculty of Materials Science and Technology Slovak University of Technology
Journal Details
License
Format
Journal
eISSN
1338-0532
First Published
03 Mar 2011
Publication timeframe
2 times per year
Languages
English
access type Open Access

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

Richard Kuracina,
Richard Kuracina,
Zuzana Szabová and
Zuzana Szabová and
Eva Buranská
Eva Buranská
Published Online: 03 Sep 2019
Volume & Issue: Volume 27 (2019) - Issue 44 (June 2019)
Page range: 65 - 71
Received: 30 Apr 2019
Accepted: 05 Jun 2019
Research Papers Faculty of Materials Science and Technology Slovak University of Technology's Cover Image
Research Papers Faculty of Materials Science and Technology Slovak University of Technology
Journal Details
License
Format
Journal
eISSN
1338-0532
First Published
03 Mar 2011
Publication timeframe
2 times per year
Languages
English
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

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