High-efficiency tower tray set for urea synthetic tower

The utility model discloses a high efficiency tower tray set for a urea synthetic tower, which comprises a plurality of layers of tower trays, wherein, the tower trays are made by the fixing of a frame and a screen plate, and the frame is composed of rib plates; the number of screen plate holes of each tower tray is reduced layer by layer from the bottom to the top; a skirt edge is arranged on the lower part of the tower tray, and furthermore, the side gap of the tower trays is controlled about 7.5 millimeters. The tower tray set for the urea synthetic tower of the utility model has the advantages of high gas conversion rate of CO 2, little steam consumption, and urea production enhancing and production cost lowering after the utility model is popularized and applied.