Marsh gas production CNG's gaseous purifier of CO2

The utility model discloses a marsh gas production CNG's gaseous purifier of CO2, it includes marsh gas jar, mother liquor tank and aqueous ammonia recovery tower, the outlet duct of marsh gas jar is established ties with carbonization king -tower and carbonization secondary tower through the compressor in proper order, the outlet duct and the washing tower of carbonization secondary tower are connected, the top of wasing the tower is equipped with the CNG export, mother liquor tank's outlet pipe passes through the ammonia pump and is connected with the top of carbonization king -tower and carbonization secondary tower, the outlet pipe is drawn forth the back from the bottom of carbonization king -tower and carbonization secondary tower and is connected through stiff ware and the centrifugal separator that is equipped with the export of carbon ammonium, the centrifugal separator passes through the pipeline and is connected with brilliant liquid separator, the outlet pipe of brilliant liquid separator is connected with mother liquor tank, the bottom is through brilliant liquid pump and stiff ware circulating connection, be equipped with on the aqueous ammonia recovery tower and wash the water pipe that the tower is connected, now be equipped with the water pipe of being connected with mother liquor tank, one side of aqueous ammonia recovery tower is equipped with the melamine device that is linked together through the pipeline. There is purification technical problem clean and not with high costs in it effectively to have solved prior art.