A New Technique for the Removal of Methane from Coal

CIM Bulletin, 1972

RICHARD L. EVERY and LUINO DELL'OSSO, Jr., Continental Oil Company, Research and Development Department, Ponca City, Oklahoma, U.S.A.

The enormity of the methane-in-coal problem is discussed, with a brief summary of the state-of-the-art. Laboratory techniques and data on the desorption of methane from Pittsburgh seam coal are presented and discussed and include the effect of time, temperature and vacuum. Under laboratory conditions, it was possible to displace 90 per cent of the residual methane by flooding the coal samples with carbon dioxide. Carbon dioxide was found to be three times more effective t han air and almost five times more effective than helium.
Keywords: atmospheric pressure, carbon dioxide, Coal Science, Equilibrium Sorption Studies of Methane, gas chromatograph, carbon dioxide, Coal, crushing, Data, methane, Pressure, Systems, test