Exhaust gas temperature reduction system

摘要

The present invention provides an exhaust gas temperature reduction system capable of effectively reducing the temperature of exhaust gas at the time of a power failure and capable of being constructed at a lower cost than conventional. SOLUTION: A plurality of first nozzles N1 and second nozzles N2, a first cooling water tank 3 for supplying water to the first nozzle N1 via an electric pump P2, and water via a first solenoid valve EV1. Air is introduced to the second cooling water tank 4 via the second cooling water tank 4 which is introduced and supplies water to the second nozzle N2 via the second electromagnetic valve EV2, and the first direction control valve DV1 for preventing reverse flow. In the normal state, the electric pump P2 operates to spray the first nozzle N1 with water, and at the time of a power failure, the electric pump P2 stops and the first nozzle N1 does not spray water. The first solenoid valve EV1 is closed so that the second coolant water tank 4 is disconnected from the compressed air tank 6 and the water receiving tank 2, and the second solenoid valve EV2 is opened so that the second nozzle N2 is An exhaust gas temperature reducing system 1 to spray is provided. [Selected figure] Figure 1