Spraying device for boiler flue gas desulfurization

The utility model relates to the technical field of desulfurization devices, in particular to a spraying device for boiler flue gas desulfurization, which comprises a first casing, and a gas inlet pipe is fixedly arranged on one side of the first casing. According to the utility model, the spraying mechanism is mounted, so that an iron-based solution in the storage tank can be uniformly sprayed on flue gas through the spraying plate during use, and gas containing hydrogen sulfide and an aqueous solution containing an iron-based catalyst are subjected to gas-liquid phase contact reaction to generate elemental sulfur and complex ferrous ions; the spraying angle of the spraying plate can be flexibly controlled through the rotating shaft, the filtering mechanism is installed, elemental sulfur in the solution after reaction can be effectively filtered through a filtering net in the filtering plate during use, the water pump is installed, complexing ferrous ions in the residual solution are easily oxidized into com