Development of PWR Passive Autocatolytic Hydrogen Recombiners
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摘要: 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。Abstract: Passive autocatalytic hydrogen recombiners(PAR) are mainly used for removing hydrogen in the containment of NPS and keeping the hydrogen concentration at explosion-safe level under severe accident. The PAR is designed according to the theory that catalytic reaction of H2 and O2, the catalytic plate of PAR is made of tPt\Pd catalyzer. According to requirements of the hydrogen removal under NPS severe accidents, put up series experiments on the PAR under the conditions of the different pressure、hydrogen concentration、temperature and The influence test of the different poisons on the catalytic plate and Verification Test of Start and Stop Threshold。The results of performance test indicate that the developed PAR meet the requirements of the NPS hydrogen removal, the development PAR can direct apply the GRE-Ⅱ NPS and the ERP、AP1000 NPS.
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Key words:
- Hydrogen recombiners /
- Passive autocatalytic /
- Pt/Pd catalyzer /
- Severe accident
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