Abstract The tritium release from the ceramic materials of the DEMO Breading Blanket (BB) is a complex mechanism due mainly to the chemistry of the interface between the breeder material and the purge gas. The tritium atomic form produced inside the ceramics structure is converted into tritiated water at the surface of the breeder material due to interaction with residual moisture / water layer on the ceramics and free oxygen atoms after Li burn-up. Therefore, in contrast to the liquid BB where tritium is produced as Q2 solely, the Tritium Extraction and Recovery (TER) from any solid BB must handle both the molecular tritium and the tritiated water. Most of the processes considered for T extraction from the purge gas foresee to handle Q2O and Q2 separately and consecutively, making necessary a two-stage process for full tritium removal.

中文翻译：

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HCPB氚萃取回收系统的研制

摘要 DEMO Breading Blanket (BB) 的陶瓷材料中氚的释放是一个复杂的机制，主要是由于增殖材料和吹扫气体之间界面的化学性质。由于与陶瓷上的残留水分/水层和锂燃烧后的游离氧原子相互作用，在陶瓷结构内部产生的氚原子形式在增殖材料表面转化为氚化水。因此，与氚仅作为 Q2 生产的液体 BB 相比，任何固体 BB 的氚提取和回收 (TER) 必须同时处理分子氚和氚化水。大多数考虑从吹扫气中提取 T 的工艺预计将分别且连续地处理 Q2O 和 Q2，因此有必要采用两阶段工艺来完全去除氚。