Experimental Investigation on the Performance of Desuperheater in Power Plant

Desuperheater is an important equipment in power plant. In desuperheater, spray nozzle is the key component for its advantages of full contact and seldom blockage. In this study, a nozzle atomization test system is built and different nozzle water total pressures and wind speeds are chosen under the condition of Room-temperature to test the atomization characteristics of the target spray nozzle in high-speed airflow. The experimental results are compared with the theoretical results. The conclusion shows the SMD distribution range after second atomization at We ranging from 20 to 50. Under the laboratory conditions, when the nozzle exit caliber is 3 mm and impingement angle is 60°, it can be seen that the SMD reaches its minimum value under the certain water pressure. This study provides a useful reference for the target spray nozzle atomization technology.