Design Modification and Analysis of Helium Purification System for Gas-Cooled Reactors

To avoid the corrosion of high temperature materials,the contaminants inside the helium loops of gas-cooled reactors need to be controlled by helium purification systems. Based on the mature technologies of oxidation and adsorption with CuO bed,Molecular Sieve bed and Active Charcoal bed,a modified design was given through the analysis and comparison of other typical helium purification systems. Results show that,the modified design could significantly reduce the system energy consumption. The effect of the efficiency of recuperators on system energy consumptions was also analyzed,and the lowest system energy consumption does not always occur at the highest efficiency of the No.2 recuperator in the modified design.