Abstract

In nuclear fusion reactor facilities, the multi-confinement system and the air detritiation system (ADS) are very important to prevent tritium leaking to the environment. A high-performance tritium oxidation catalyst is strongly required in the ADS. In this study, the air resistance and catalytic performance of honeycomb detritiation catalysts are investigated. Then, the honeycomb catalysts are applied in a glove-box detritiation system as well as in an ADS, and the detritiation performance is tested with tritium. Honeycomb catalysts have a much lower air resistance and an excellent scale-up effect due to the behavior of laminar flow. Thus, the honeycomb catalyst increases the reaction space velocity by nearly 100 times without decreasing the conversion rate of H₂. Even at an extremely low tritium concentration, the honeycomb catalyst transforms tritium over 95% into tritiated water. In short, Pt-loaded honeycomb catalysts have a huge advantage in and broad potential for air detritiation.

摘要

在核聚变反应堆设施中，多约束系统和空气破坏系统（ADS）对于防止tri泄漏到环境中非常重要。ADS中强烈需要高性能的tri氧化催化剂。在这项研究中，研究了蜂窝状脱硝催化剂的空气阻力和催化性能。然后，将蜂窝状催化剂应用于手套箱除杂系统以及ADS中，并用tri测试其除杂性能。由于层流的行为，蜂窝状催化剂具有低得多的空气阻力和优异的按比例放大效果。因此，蜂窝状催化剂在不降低H ₂转化率的情况下将反应空间速度提高了近100倍。。即使在an浓度极低的情况下，蜂窝催化剂也会将95％以上的tri转化为into化水。简而言之，载有Pt的蜂窝状催化剂在空气净化方面具有巨大的优势和广阔的潜力。