Equivalence of coal dust and methane at lower quenching limits of flames of their mixtures

Technical Report · Fri Dec 31 23:00:00 EST 1965

OSTI ID:7280513

Singer, J M; Bruszak, A E; Grumer, J

Quenching distances for flames of methane-coal dust mixtures were determined with air and oxygen-enriched air. Coals used were Pittsburgh, Sewell, and Pocahontas No. 3. Quenching distances were greater for flames of hybrid mixtures of coal dust and methane than for methane flames of corresponding stoichiometry. From the data of quenching distances and methane-coal dust concentrations were calculated the quenching equivalence, which is the increase in coal dust concentration required to maintain a given quenching distance value as the methane concentration decreases. These equivalences could be useful in identifying hazardous methane-coal dust mixtures in mines.

• Research Organization: Bureau of Mines, Washington, D.C. (USA)
• OSTI ID: 7280513
• Report Number(s): BM-RI-6761
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
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090110 -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
AIR
ALKANES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL FINES
COMBUSTION
CRYOGENIC FLUIDS
ELEMENTS
ENERGY SOURCES
FIRE HAZARDS
FLAMES
FLUIDS
FOSSIL FUELS
FUELS
GASES
HAZARDS
HYDROCARBONS
METHANE
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXYGEN