Flue gas purification system of efficient supercritical coal-fired power generation unit

The invention discloses an efficient supercritical coal-fired generator set flue gas purification system which comprises a vertical plate, a collection box is installed at the bottom of the vertical plate, a purification tower is installed at the upper end of the collection box, a vortex cylinder is installed at the upper end of the purification tower, and the center of the vortex cylinder communicates with the purification tower. A cavity separating mechanism and a cleaning mechanism are arranged at the bottom and the top of the vortex cylinder respectively, a vortex cavity of the vortex cylinder is divided into an upper vortex layer and a lower vortex layer by the cavity separating mechanism, the cleaning mechanism is used for cleaning the cavity wall of the vortex cavity of the vortex cylinder, a spraying plate embedded into the vortex cavity of the vortex cylinder is mounted on the vortex cylinder, the spraying plate is connected with a desulfurization mechanism, and the desulfurization mechanism is conne