Abstract Lead-Bismuth Eutectic (LBE) is an interesting candidate as coolant for future Accelerator Driven Systems (ADS) and Generation IV (Gen. IV) nuclear power plants. A well-known issue of liquid metal coolants is the need for coolant chemistry control and continuous purification. This paper presents a purification strategy for control of the dissolved oxygen content in LBE by means of a LBE cold trap. Although cold traps have been explored in the past for Sodium Fast Reactors (SFR) and more recently for lead-lithium (PbLi), advances on cold trapping for LBE are lacking behind. Formation of lead oxide (PbO) is promoted in a non-isothermal purification device (cold trap) to lower the dissolved oxygen concentration present in the liquid metal. Attachment of PbO particles to the stainless steel filter material is observed and continuous growth of captured PbO consumes oxygen from the liquid metal melt. A long-term purification campaign of more than one month is presented to demonstrate the increase in cold trap effectiveness with loading.

中文翻译：

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LBE冷却系统中氧冷捕集机制的实验研究

摘要 铅铋共晶 (LBE) 是未来加速器驱动系统 (ADS) 和第四代 (Gen. IV) 核电站的冷却剂的有趣候选者。液态金属冷却剂的一个众所周知的问题是需要冷却剂化学控制和连续净化。本文提出了一种通过 LBE 冷阱控制 LBE 中溶解氧含量的净化策略。尽管过去已经探索了钠快堆 (SFR) 和最近的铅锂 (PbLi) 冷阱，但 LBE 冷阱的进展仍然落后。在非等温净化装置（冷阱）中促进氧化铅 (PbO) 的形成，以降低液态金属中存在的溶解氧浓度。观察到 PbO 颗粒附着在不锈钢过滤材料上，捕获的 PbO 的持续增长消耗了液态金属熔体中的氧气。展示了一个超过一个月的长期净化活动，以证明冷阱效率随着负载的增加而增加。