Flue gas purification device mounted in outlet flue of desulfurization system of power plant

The utility model relates to a flue gas purification device mounted in an outlet flue of a desulfurization system of a power plant. Comprising a vertical plate, second connecting devices symmetrically arranged at the ends of the upper side wall and the lower side wall of the vertical plate, a baffle arranged on the second connecting devices, check blocks arranged on the front side and the rear side of the baffle, and first connecting devices symmetrically arranged at the ends of the upper side wall and the lower side wall of the baffle. More than two baffles are obliquely arranged in a zigzag shape and are connected through the first connecting devices, the vertical plates are connected with the baffles through the second connecting devices, and the arrangement mode of the baffles and the check blocks in the flue gas purification device strengthens the gas-liquid turbulence behavior of flue gas, is beneficial to the impact separation of fog drops and smoke dust, and improves the purification efficiency of the