Vacuum pumps used in gas drainage
|Coal mine gas accident in recent years, the industry needs to pay attention to the most important, once the mine will be able to catch dozens of innocent lives. Therefore, the safety equipment is definitely the coal industry can not be ignored, China from the 1950s to begin methane drainage, drainage volume increase, reaches mine safety purposes, to control the gas accident occurred. With water ring vacuum pump/ compressor gas drainage has the following basic forms:
Relation to coal mining and drainage points: pre-drainage before harvest, that untapped coal seam methane drainage. Because a wide range of mining, pipeline length, generally there are dozens of kilometers. Poor working environment, it requires water ring vacuum pump compressor pumping capacity, high vacuum, reliable operation. Now the water ring vacuum pump / compressor adopts international advanced design and manufacturing technology, the gas can reach 500 ~ 70000m3 / h, fully meet the needs of the coal industry. The drainage method is becoming mainstream, this method has not only become ensure safe production, and CBM will become the new clean energy, with strategic significance for a large country like coal in China. Drainage – drivage, while mining extraction, which are mined coal bed methane drainage process. Postharvest drainage, that abandoned mines, mining methane drainage tunnel.
With drainage points: drilling method drainage, drilling for coal, and the use of loose technology, increased coalbed methane release area and through the guide, so that CBM quick release. Reduce emissions during mining. This method is effective, and high utilization of CBM. Generally use water ring vacuum pump / compressor drainage. Roadway drainage method, for gob roadway, mining roadway drainage, ensure safe concentration. Ground vertical drainage wells; mixing drainage and so on.
Drainage points to the target layer: mining drainage layer, adjacent layers drainage, drainage etc. goaf.