| abstract |
The invention relates to a flue gas treatment system, which comprises an ammonia injection device, a first dividing wall type heat exchanger, a flue gas heater and a denitration reactor. The smoke inlet at the heat absorption side of the first dividing wall type heat exchanger is used for receiving smoke, the smoke outlet at the heat absorption side of the first dividing wall type heat exchanger is connected with the smoke inlet of the ammonia injection device, the smoke outlet of the ammonia injection device is connected with the smoke inlet of the denitration reactor, the smoke outlet of the denitration reactor is connected with the smoke inlet at the heat release side of the first dividing wall type heat exchanger, the smoke outlet at the heat release side of the first dividing wall type heat exchanger is connected with a chimney, the treated smoke is discharged through the chimney, and the smoke heater is arranged between the first dividing wall type heat exchanger and the ammonia injection device and can heat the smoke passing through the smoke inlet and being lower than 280 ℃ to 280-300 ℃. The flue gas treatment system is used for improving the reaction efficiency of denitration reaction of the flue gas treatment system when the temperature of flue gas is lower, and can reduce the risk that the discharged flue gas harms the environment. |