Boiler flue gas desulfurization device

The utility model relates to the technical field of boiler flue gas treatment equipment, in particular to a boiler flue gas desulfurization device which comprises a boiler body, a smoke exhaust pipe is arranged on the right upper side of the boiler body, a desulfurization filter assembly is arranged at the right end of the smoke exhaust pipe, and the desulfurization filter assembly comprises a filter box arranged at the right end of the smoke exhaust pipe. A liquid conveying pipe is arranged in the middle of the top of the filtering box, a spray head is installed on the lower side of the liquid conveying pipe, a liquid medicine box is arranged on the back face of the filtering box, a pump is installed on the top of the liquid medicine box, and a dust filtering net is arranged on the left side of the interior of the filtering box and can filter out dust in smoke; according to the flue gas desulfurization device, a liquid conveying pipe, a spray head, a liquid medicine box and a pump are arranged, a desulfuriza