Comparison Capability between STORK Deaerator and Tray-Spray Steam Deaerator

This article briefly describes the deaeration principle and the main functions of the deaerator, introduces the detailed structure and the deaeration principle of STORK deaerator used in LAII （Ling’ao Nuclear power station phase II） and deaerator used in HYH and ND power station. After analyzing the different influence by these two types deaerators on the safety operation and the system design of the nuclear power station, the optimized system design proposal of the deaerator of HYH and ND power station was presented with examples. The conclusion is the safety and the economy of improved Tray-spray steam deaerator is more higher than the other one.