Spray packing tower for flue gas waste heat recovery

The invention provides a spray packing tower for flue gas waste heat recovery. The spray packing tower comprises a spray packing tower main body (1), a spray component (2), packing (3), a dehydrator (4), a fan (7), a flue gas pipeline and an oxidizer distributor (9), wherein an intermediate spray packing tower partition board (112), a packing support board (113) and a dehydrator support board (114) are arranged in the spray packing tower main body (1) from bottom to top; an inner cavity of the spray packing tower main body (1) is divided into a lower alkali liquor storage space and an upper flue gas spray heat exchange space by the intermediate spray packing tower partition board (112), and the intermediate spray packing tower partition board (112) is used for receiving spray water for spray heat exchange. The spray packing tower can be used for significantly reducing the electric power of the fan for conveying flue gas and a water pump for conveying the spray water, increasing the heat energy utilization efficiency and improving the energy energy-conserving benefit.