气冷堆氦气净化系统改进设计与分析

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

为防止高温材料的腐蚀,需要通过氦气净化系统对气冷堆回路中各种气体杂质含量进行控制。本文基于高温氧化铜床、室温分子筛床和深冷活性炭床的氧化以及吸附成熟技术,通过比较分析当前各国已有的典型氦气净化回路设计,提出一项改进设计方案。计算结果表明,在保证系统净化效率的前提下,改进设计不增加系统设备,可以明显地降低系统能耗。对回热器回热度的敏感性分析结果表明,回热器回热度并非越高越好。

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.