Hydrogen permeation through nickel dense membrane applied to Sodium cooled Fast Reactors has been studied theoretically and experimentally. In order to investigate the coupling of nickel membrane with external gas and sodium flows, an analytical model based on mass transfer resistances is developed. A sensitivity analysis showed that, for enough thick membranes and high sodium velocities, the nickel resistance has the most important effect. A permeator prototype constituted of four Ni201 tubular membranes, has been designed: experimental tests at pilot-scale are carried out at different temperatures, gas pressures and flowrates, both in gas-vacuum and gas-sodium configuration. Results for permeation against vacuum demonstrate that hydrogen diffusion within the membrane is the limiting step, in accordance with previous literature results obtained for pure nickel permeation experiments.

从理论上和实验上研究了通过镍致密膜将氢渗透到钠冷快堆中的过程。为了研究镍膜与外部气体和钠流的耦合，建立了基于传质阻力的分析模型。敏感性分析表明，对于足够厚的膜和高钠速度，耐镍性具有最重要的作用。已经设计了由四个Ni201管状膜组成的渗透器原型：在气-真空和气-钠配置下，在不同的温度，气压和流量下进行了中试规模的实验测试。真空渗透的结果表明，氢在膜内的扩散是限制步骤，