Synthetic ammonia methanation non-condensable gas treatment device

The utility model relates to the technical field of synthetic ammonia processes, in particular to a synthetic ammonia methanation non-condensable gas treatment device which comprises a condensate buffer tank, a methanation separator and a methanation furnace, a temperature adjusting subline drain valve is arranged on a gas inlet pipeline in front of the methanation furnace, and a non-condensable gas outlet of the condensate buffer tank is connected to the temperature adjusting subline drain valve through a first balance pipe; a manual gate valve, an air and liquid discharging valve and a steam trap are sequentially arranged on the first balance pipe in the direction from the condensate buffer tank to the temperature adjusting subline drain valve; a blind plate is arranged on a second balance pipe connected between the condensate buffer tank and the methanation separator; the device disclosed by the utility model not only solves the problem of overpressure of equipment caused by nowhere emission of non-condens