Flue gas desulfurization and denitrification device for power plant

The utility model relates to the technical field of flue gas treatment, in particular to a flue gas desulfurization and denitrification device for a power plant. Comprising a treatment box, the inner wall of the treatment box is fixedly connected with two ceramic heat preservation plates and a partition plate, the interior of the treatment box is divided into a filtering cavity, a desulfurization cavity, a preheating cavity and a denitration cavity through the two ceramic heat preservation plates and the partition plate, and the inner wall of the denitration cavity is fixedly connected with heat preservation cotton and a denitration sieve plate; the inner bottom wall of the preheating cavity is fixedly connected with an electric heating wire, and the opposite faces of the two ceramic heat preservation plates are fixedly connected with a preheating bend. By arranging the ceramic heat preservation plate and the heat preservation cotton for internal heat preservation of the preheating cavity and the denitration