Safety protection device of ship flue gas desulfurization system

The utility model relates to the technical field of safety protection devices of ship flue gas desulfurization systems, and discloses a safety protection device of a ship flue gas desulfurization system, which comprises a desulfurization tower and a flue, the desulfurization tower is connected with a water inlet pipe III, and the flue is connected with a water inlet pipe II; the water inlet pipe III and the water inlet pipe II are connected in parallel and then connected with the water outlet pipe I and the water outlet pipe II; the water outlet pipe I is connected with an alkali liquor circulating pool through an alkali liquor pump; the water outlet pipe II is connected with seawater through a seawater pump; a downpipe is arranged at the bottom of the desulfurization tower and is provided with an explosion venting valve; the water inlet pipe V and the water outlet pipe III are connected in parallel; an electric valve IV is arranged on the water outlet pipe III; the water outlet pipe III leads to the sea; the