气体循环对氦屏蔽效应下铀流通床吸氢性能的具体影响

Effect of Gas Circulation on Hydrogen Absorption Performance of Uranium Bed Under the Helium Blanketing Effect

通过定容吸附实验及气体循环吸附实验,验证分析氦气对铀流通床吸氢时的屏蔽效应;探究气体循环对氦屏蔽效应下铀流通床吸氢性能的具体影响。结果表明,氦气对铀流通床吸氢时产生了明显的屏蔽效应,氦气浓度越高,产生的氦屏蔽效应越明显;气体循环能减轻铀流通床吸氢时的氦屏蔽效应,使铀吸氢性能提升;氦浓度增加,减轻效果削弱;氢分压极低时,可以通过增加循环时长来提高吸氢效率。

The blanketing effect of helium on hydrogen absorption in uranium bed was verified and analyzed by constant volume adsorption experiment.The specific influence of gas cycle on hydrogen absorption performance of uranium bed under the helium blanketing effect was investigated by gas circulation experiment.The results show that helium has obvious blanketing effect on hydrogen absorption in uranium bed,and the higher the concentration of helium,the more obvious the shielding effect is.The gas cycle can reduce the helium blanketing effect of the uranium bed and improve the hydrogen absorption performance of uranium.With the increase of helium concentration,the mitigation effect is weakened.When the hydrogen partial pressure is very low,the hydrogen absorption efficiency can be improved by increasing the cycle time.