A purification device and purification system that is used for taking out in pit and adopts coal bed gas

The utility model relates to a purification device and purification system that is used for taking out in pit and adopts coal bed gas, the purification device includes a plurality of adsorption platesand is used for the frame of fixed mounting adsorption plate, it is sealed between a plurality of adsorption plate interval arrangements and two the adjacent adsorption plates, form the runner of coal supply layer air current warp, the opposite ends of frame has air inlet and gas outlet with the both ends intercommunication of runner respectively, the adsorption plate has the molecular sieve function, its can preferential adsorption methane and in can making the coal bed gas the small gas molecule in methane of molecule pass through. The utility model provides pure device and system can carryout effectual purification and separation, warp to the methane in the coal bed gas keeping former taking out under the prerequisite of adopting coal bed gas, emission coal bed gas system and functionin the pit the utility mod