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Combustion, Explosion and Shock Waves

, Volume 23, Issue 2, pp 239–245 | Cite as

Detonation limits of clouds of coal dust in mixtures of oxygen and nitrogen

  • D. H. Edwards
  • P. J. Fearnley
  • M. A. Nettleton
Article

Abstract

Ignition and the subsequent acceleration of flame in clouds of coal dust dispersed in mixtures of oxygen and nitrogen have been studied. Two coal sizes, 24 and 54 μm, in concentrations ranging from 0.05 to 0.22 kg/m3 were employed. Flame acceleration and the approach to transition to a stable detonation were monitored by a combination of microwave interferometry and pressure measurements. Flame and shock velocities up to 1.85 km/sec were observed. Ignition distances were found to be independent of the concentrations of dust and oxygen and particle size.

Keywords

Oxygen Nitrogen Particle Size Dust Microwave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • D. H. Edwards
    • 1
  • P. J. Fearnley
    • 2
  • M. A. Nettleton
    • 3
  1. 1.Department of PhysicsUniversity College of WalesPenglaisUK
  2. 2.BP Research CentreSunbury on ThamesEngland
  3. 3.CERLLeatherheadEngland

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