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2 results on '"Wheat flour dust clouds"'

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

Author

Zuzana Szabová, Eva Buranská, and Richard Kuracina

Subjects
Flammable liquid, 021110 strategic, defence & security studies, explosion characteristic, Materials science, Explosive material, 0211 other engineering and technologies, Analytical chemistry, Wheat flour, 020101 civil engineering, 02 engineering and technology, Wheat flour dust clouds, 0201 civil engineering, Pressure rise, chemistry.chemical_compound, chemistry, maximum rate of explosion pressure rise, Particle-size distribution, lcsh:TA401-492, maximum explosion pressure, lcsh:Materials of engineering and construction. Mechanics of materials, Particle size, Bar (unit), Maximum rate
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.

Published
2019

2. Determination of the Explosion Characteristics of Wheat Flour

Author

Zuzana Szabová, Richard Kuracina, Denisa Pangrácová, and Karol Balog

Subjects
Physics, wheat flour dust clouds, explosion characteristics, lower explosion limit, Analytical chemistry, Wheat flour, Pressure rise, maximum rate of explosion pressure rise, lcsh:TA401-492, maximum explosion pressure, lcsh:Materials of engineering and construction. Mechanics of materials, Limit (mathematics), Bar (unit), Maximum rate
Abstract

The article deals with the measurement of explosion characteristics of wheat flour. The measurements were carried out according to STN EN 14034-1+A1:2011 Determination of explosion characteristics of dust clouds. Part 1: Determination of the maximum explosion pressure pmax of dust clouds, the maximum rate of explosion pressure rise according to STN 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 and LEL according to STN EN 14034-3+A1:2011 Determination of explosion characteristics of dust clouds: Determination of the lower explosion limit LEL of dust clouds. The testing of explosions of wheat flour dust clouds showed that the maximum value of the pressure was reached at the concentrations of 600 g/m3 and its value is 8.32 bar/s. The fastest increase of pressure was observed at the concentration of 750 g/m3 and its value was 54.2 bar/s.

Published
2017

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