The Research Progress of the Enrichment of Ventilation Air Methane (VAM)
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The concentration of ventilation air methane(VAM), exhausted from coal mine ventilation system, commonly is less than 0.5%(mostly below 0.3%), but the total emission amount is very large. According to the relevant data, The amount of VAM emitted annually into the atmosphere took up 80%~90% of the total emissions of China's coal mine annually. Therefore, the utilization of VAM in energy conservation and environmental protection is of great significance through the enrichment technology. This paper summarized and prospected the technology progress of VAM enrichment.
Enrichment, Ventilation Air Methane, Progress