Plate type flue gas cooler

The utility model relates to a plate type flue gas cooler, which is mainly applied to cooling high-temperature flue gas in industries of oil refining, petrochemical engineering, metallurgy and the like and belongs to the technical field of cooling equipment. The plate type flue gas cooler comprises a cooling element box (11), a plurality of rows of cooling units (13) are arranged in the cooling element box (11), a ribbed plate (17) is arranged between each two adjacent rows of cooling units (13), the ribbed plates (17) are located on outer sides of tube plates (16), the cooling units (13) are flat tube structures, sealing ring press plates (14) are disposed at two ends of each cooling unit (13) and located on the outer sides of the tube plates (16), a sealing ring (18) is arranged between each sealing ring press plate (14) and each cooling unit (13), and sealing ring pressure springs (15) are disposed on outer sides of the sealing ring press plates (14) and each sealing ring pressure spring (15) is inserted b