FIELD: mining.
SUBSTANCE: method comprises sucking methane-air jet from the well and separating the jet into the flows by passing it through pipes 50-mm in diameter. The number of pipes is at least 400. The separated mixture with high concentration of methane is discharged through perforations in the pipes. The mixture residual with low concentration of methane is discharged to the atmosphere.
EFFECT: enhanced safety.
7 dwg
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