Gas Content of Kuznetsk Basin Bituminous Coal

Resumo

The properties of bituminous Zh coal are studied. The change in gas content over time in sealed bed samples is determined. It is found that, for all size classes of coal, the pressure of the gas released from the coal stabilizes over 24 h; about half of the pressure increase occurs in the first 3 h. The gas content is greater in coal of the 5–10 mm class than in coal of the ≤3 mm class.