面向乏燃料干法后处理的减压蒸馏回收高纯金属研究进展
Research Progress on Vacuum Distillation Recovery of High-purity Metals for Dry Post-treatment of Spent Fuel
纪雷鸣 1刘佳鑫 1秦永泉 1刘继连 1宋淼 1王利芹 1武沛 1马敬1
作者信息
- 1. 中国核电工程有限公司,北京 100840;中核核燃料后处理工程技术研究中心,北京 100840
- 折叠
摘要
在乏燃料干法后处理中,通常使用减压蒸馏纯化阴极产物以及回收熔盐.本文围绕减压蒸馏在乏燃料干法后处理中的应用,系统地总结了该技术的总体进展,指出熔盐堆燃料处理过程中减压蒸馏技术将来需要重点解决的问题是高温、高放射性环境下的设备耐受性问题,与其他分离技术的结合,形成更加完善的熔盐堆燃料处理体系是将来的发展趋势.综述了当前熔盐系统的选择与优化、蒸馏设备与参数的优化方面的研究进展,指出减压蒸馏技术将来发展的重点是进一步优化熔盐系统,探究不同熔盐体系对于分离乏燃料中各种元素的适应性,并优化蒸馏设备的设计及参数,以提高分离效率和回收率.
Abstract
In the dry reprocessing of spent fuel,vacuum distillation is usually used to purify cathode products and recover molten salt.This paper focuses on the application of vacuum distillation in the dry reprocessing of spent fuel,and systematically summarizes the overall progress of this technology.It is pointed out that the key problem to be solved in the future of vacuum distillation technology in the fuel treatment process of molten salt reactor is the equipment tolerance under high temperature and high radioactivity environment.The combination with other separation technologies to form a more perfect molten salt reactor fuel treatment system is the future development trend.The research progress in the selection and optimization of molten salt system and the optimization of distillation equipment and parameters is reviewed.It is pointed out that the future development of vacuum distillation technology is to further optimize the molten salt system,explore the adaptability of different molten salt systems to the separation of various elements in spent fuel,and optimize the design and parameters of distillation equipment to improve the separation efficiency and recovery rate.
关键词
减压蒸馏/乏燃料/干法后处理/熔盐Key words
vacuum distillation/spent fuel/dry post-processing/melting salt引用本文复制引用
出版年
2024
NETL
NSTL
万方数据