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Mining Publication: Methane Emissions from Gassy Coals in Storage Silos
Keywords: Coal Gas emissions Methane Silos
Original creation date: January 1978
Authors: JE Matta, JC LaScola, FN Kissell
Report of Investigations - January 1978
Download PDF Document (0.57 MB)
NIOSHTIC2 Number: 10000621
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8269, 1978 Jan; :1-14
The methane gas emitted from coal samples collected from the conveyor belts dumping into silos was measured by the Bureau of Mines. Approximately 50 pct of the total gas desorbed into a sealed can within 1 week was released during the first 24 hours. No simple correlation between the gassiness of the coal stored and the methane concentration in the silo open space above the coal was found. This was probably because the gassier coals were stored in open-top silos, which were better ventilated. Although the methane concentration in the open space above the coal pile was less than 1 pct for all 34 silos investigated, a methane measurement in the coal pile showed that high methane concentrations can exist. The methane released in the pile appears to accumulate and not liberate freely into the open space above the coal pile. Probably this gas is released during reclaiming operations, but further research is required to substantiate this claim.
Image of publication Methane Emissions from Gassy Coals in Storage SilosReport of Investigations - January 1978
Download PDF Document (0.57 MB)
NIOSHTIC2 Number: 10000621
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8269, 1978 Jan; :1-14
See Also
Assessing the Methane Hazard of Gassy Coals in Storage Silos
The Direct Method of Determining Methane Content of Coalbeds for Ventilation Design
Measuring the Gas Content of Coal: A Review
Methane Absorption in Oil Shale and Its Potential Mine Hazard
Methane Diffusion Parameters for Sized Coal Particles: A Measuring Apparatus and Some Preliminary Results
Methane Emission Rate Studies in a Northern West Virginia Mine
Modeling and Prediction of Ventilation Methane Emissions of U.S. Longwall Mines Using Supervised Artificial Neural Networks
Reservoir Engineering Considerations for Coal Seam Degasification and Methane Control in Underground Mines
Reservoir Rock Properties of Coal Measure Strata of the Lower Monongahela Group, Greene County (Southwestern Pennsylvania), from Methane Control and Production Perspectives
A Review of the Mechanisms of Gas Outbursts in Coal
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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