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

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · Combust., Explos. Shock Waves (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00748637· OSTI ID:6977171

Edwards, D H; Fearnley, P J; Nettleton, M A

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 ..mu..m, in concentrations ranging from 0.05 to 0.22 kg/m/sup 3/ 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.

• OSTI ID: 6977171
• Journal Information: Combust., Explos. Shock Waves (Engl. Transl.); (United States), Journal Name: Combust., Explos. Shock Waves (Engl. Transl.); (United States) Vol. 23:2; ISSN CESWA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
CHEMICAL REACTION KINETICS
COAL FINES
COMBUSTION INSTABILITY
COMBUSTION KINETICS
DETONATION LIMITS
DETONATION WAVES
DUSTS
ELEMENTS
FLAME PROPAGATION
FLAMES
IGNITION
INSTABILITY
INTERFEROMETRY
IONIZATION
KINETICS
NITROGEN
NONMETALS
OXYGEN
PARTICLE SIZE
PHASE VELOCITY
PRESSURE MEASUREMENT
REACTION KINETICS
SHOCK WAVES
SIZE
STABILITY
VELOCITY
VOLATILITY
WAVE PROPAGATION