氟化挥发工艺实验数据

该研究内容主要确定了液态熔盐体系氟化、UF6吸附纯化、UF6冷凝回收和工艺尾气处理方案，采用 TMSR 燃料盐组成LiF-BeF-UF4- FPFx（冷态）进行了工艺研究和优化，确定了公斤级熔盐U氟化工艺中包括F2/U、反应温度、吸附剂和冷凝温度等工艺参数，并采用本实验室优化的红外在线监测技术对铀氟化进程和氟化过程中材料腐蚀水平进行了实时监测。在公斤FLiBe熔盐中进行铀的氟化挥发处理，铀分离率（或转化率）达到99%；-78℃的冷阱能有效收集UF6，回收率大于95%；气态氟化产物经400℃NaF吸附处理，铀产品中Nb、Cs和稀土元素的去污分别达到103、104和107；红外在线监测技术能有效反映进程。This study primarily determined the technical schemes for molten salt system fluorination, UF₆ adsorption and purification, UF₆ condensation recovery, and process off-gas treatment. Process research and optimization were carried out using the TMSR fuel salt composition LiF-BeF₂-UF₄-FPFₓ (cold-state). The key process parameters for the kilogram-scale molten salt uranium fluorination process, including F₂/U molar ratio, reaction temperature, adsorbent type, and condensation temperature, were finalized. The online infrared monitoring technology optimized in our laboratory was employed to real-time monitor the uranium fluorination process and the material corrosion level during the reaction. Uranium fluorination volatilization treatment was conducted in kilogram-scale FLiBe molten salt, achieving a uranium separation rate (or conversion rate) of 99%. A cold trap maintained at -78 °C can effectively collect UF₆, with a recovery rate exceeding 95%. After the gaseous fluorination products were treated via 400 °C NaF adsorption, the decontamination factors (DFs) for Nb, Cs, and rare earth elements in the uranium product reached 10³, 10⁴, and 10⁷ respectively. The optimized online infrared monitoring technology can effectively reflect the entire process progress.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于氟化挥发工艺实验，涉及液态熔盐体系的氟化、UF6吸附纯化、冷凝回收及尾气处理方案。通过工艺研究和优化，确定了关键工艺参数，并利用红外在线监测技术实时监测铀氟化进程和材料腐蚀水平，实现了高达99%的铀分离率和95%以上的UF6回收率。