Defoaming agent feeding device for desulfurizing absorption tower

The embodiment of the utility model discloses a defoaming agent adding device for a desulfurizing absorption tower. An annular pipe is transversely mounted at the upper part of the central position of an inner cavity of the absorption tower body, spray heads are longitudinally communicated and connected with the periphery of the bottom of the annular pipe, a liquid inlet end on one side of the annular pipe is communicated with a first shunting liquid guide pipe, and two groups of liquid inlet ends are arranged on one side of the first shunting liquid guide pipe; and the liquid inlet ends of the first shunting liquid guide pipes are movably connected with the liquid outlet end of a defoaming agent dosing pump. According to the defoaming agent dosing device for the desulfurizing absorption tower, the spray heads with large spraying areas are arranged at the bottom of the annular pipe at certain intervals, and a defoaming agent is sprayed out from the spray heads after being stirred by the desulfurizing and defo