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Mining Publication: Gases Desorbed From Five Coals of Low Gas Content
Keywords: Chromatography Methane
Original creation date: January 1973
Authors: AG Kim, LJ Douglas
Report of Investigations - January 1973
Download PDF Document (0.49 MB)
NIOSHTIC2 Number: 10000606
U.S. Department of the Interior, Bureau of Mines. Report of Investigations 7768, NTIS No. PB-221 575, 1973; Jan :1-13
Methane and other hydrocarbon gases, byproducts of coalification, are emitted from coal at widely varying rates and often present ventilation problems during mining. The air in some coal mines apparently contains no methane. To determine if coals from mines which had no history of detectable gas emission contained adsorbed methane, samples of coal at the shaft bottom and at an active face were obtained and placed in sealed metal cylinders. The atmosphere around the coal was sampled and analyzed by gas chromatography. Methane, ethane, ethylene, propane, propylene, and butane were found to have been desorbed from these coals. Hydrogen and helium were also detected. An estimate of the amount of residual gas per ton of coal indicated that coal samples from the active face generally contained more adsorbed gas than coal samples obtained from the shaft bottom.
Image of publication Gases Desorbed From Five Coals of Low Gas ContentReport of Investigations - January 1973
Download PDF Document (0.49 MB)
NIOSHTIC2 Number: 10000606
U.S. Department of the Interior, Bureau of Mines. Report of Investigations 7768, NTIS No. PB-221 575, 1973; Jan :1-13
See Also
Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
Development and Application of Reservoir Models and Artificial Neural Networks for Optimizing Ventilation Air Requirements in Development Mining of Coal Seams
Drainage of Methane From the Overlying Pocahontas No. 4 Coalbed From Workings in the Pocahontas No. 3 Coalbed
Guidelines for the Control and Monitoring of Methane Gas on Continuous Mining Operations
Ignition of Methane-Air Mixtures by Laser Heated Small Particles
Modeling and Prediction of Ventilation Methane Emissions of U.S. Longwall Mines Using Supervised Artificial Neural Networks
Remote Methane Sensors
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
Stochastic Modeling of Gob Gas Venthole Production Performances in Active and Completed Longwall Panels of Coal Mines
Page last reviewed: July 13, 2015
Page last updated: July 13, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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