Burner nozzle device for reducing erosion corrosion of boiler water cooling wall of coal-fired power plant

The utility model discloses a burner nozzle device for reducing erosion corrosion of a water cooling wall of a coal-fired power plant boiler, which relates to the technical field of burners and comprises a hearth, an upper hot secondary air duct is arranged on the inner side wall of the hearth close to the upper end, and a lower hot secondary air duct is arranged on the inner side wall of the hearth close to the lower end. Bearing holes are formed in the inner side wall of the upper hot secondary air duct and the inner side wall of the lower hot secondary air duct in a penetrating mode, a furnace cavity is formed in the hearth, an air opening is connected to the left side of the furnace cavity, a diffuser is arranged at the position, close to the middle, in the hearth, a spray head is installed at one end of the diffuser, and an inserting groove is formed in the bottom end of the spray head; according to the burner nozzle device capable of reducing erosion corrosion of the water-cooled wall of the coal-fired