Spraying type flue gas waste heat recovery device

The invention relates to the technical field of flue gas recovery and discloses a spraying type flue gas waste heat recovery device. The spraying type flue gas waste heat recovery device comprises a flue gas waste heat deep recovery unit and a flue gas purification unit. The flue gas waste heat deep recovery unit comprises a main tower body, a first heat exchanger and an electric heat pump set. A water source is connected with the electric heat pump set and the first heat exchanger through water inflow pipes. The main tower body comprises a water condensation collection segment and a spaying heat exchange segment. Flue gas enters the spraying heat exchange segment through a flue gas pipeline. The first heat exchanger is arranged in the flue gas pipeline. The water condensation collection segment is connected with the electric pump set through a water outflow pipe. The flue gas purification unit comprises an oxidization device communicated with the flue gas pipeline. A heat supply water pipe is arranged on the water inflow pipe between the first heat exchanger and the electric pump set. The spraying type flue gas waste heat recovery device can perform classification recovery on flue gas waste heat, and heating efficiency is higher.