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核电厂非能动氢复合器主要用于消除严重事故后安全壳内产生的氢气,避免氢气聚集而产生爆炸。根据H2和O2催化反应消氢的工作原理,设计以Pt、Pd混合配比作为催化剂的催化板,并以此为核心部件,设计制造能够在非能动条件下持续消氢的非能动氢复合器。针对核电厂安全壳严重事故后的消氢要求,开展非能动氢复合器在不同温度、压力、氢气体积分数等条件下的消氢速率试验,不同毒物对消氢效果影响试验以及启动和停止阈值试验。研究结果表明,非能动氢复合器达到了核电厂事故后消氢技术要求,可直接应用于二代堆型核电厂,还可以应用于EPR或AP1000等三代堆型核电厂。
Non-active hydrogen compound reactors in nuclear power plants are mainly used to eliminate the hydrogen generated in the containment after a serious accident so as to avoid hydrogen buildup and explosion. According to the working principle of H2 and O2 catalytic hydrogenation, a Pt and Pd mixture ratio catalyst was designed and used as the catalyst. With this as the core component, a passive hydrogen recombiner capable of continuous hydrogen elimination under non-active conditions was designed and manufactured . In view of the requirement of hydrogen elimination after a serious accident in containment of nuclear power plant, the hydrogen elimination rate test of passive hydrogen recombiner under different temperature, pressure and hydrogen gas volume fraction was carried out. The effect of different poison on hydrogen destroying effect and the start-up and stop threshold test. The results show that the passive hydrogen recombiner meets the technical requirements of hydrogen elimination after a nuclear accident and can be directly applied to the second generation of nuclear power plants and the third generation of nuclear power plants such as EPR or AP1000.