Urea pyrolysis system

The invention discloses a urea pyrolysis system, which relates to the technical field of boiler flue gas treatment, and comprises a feeding mechanism, a heating furnace mechanism, a preheating mechanism, a compressed air pipeline, an ammonia gas pipeline and a humid and hot air pipeline; wherein the feeding mechanism is connected with the compressed air pipeline through a pipeline; the preheatingmechanism is connected with the damp and hot air pipeline through a pipeline; the heating furnace mechanism comprises a rotatable furnace body and a heater; the feeding mechanism, the compressed air pipeline, the ammonia gas pipeline and the humid and hot air pipeline are all communicated with an inner cavity of the furnace body through pipelines; the compressed air pipeline can blow urea conveyedby the feeding mechanism into an inner cavity of the furnace body through compressed air, the ammonia gas pipeline can output ammonia gas generated in the inner cavity of the furnace body, the humidand hot air pipeline can he