TRU燃料热谱MSR定期换料及嬗变特性数值研究  

Periodically Reloading and Transmutation Characteristics Numerical Analysis of TRU Fueled Thermal Molten Salt Reactor

作　　者：于涛[1] 谢金森[1] 赵文博[1] 陈珍平[1] 谢芹[1] 刘紫静[1] Yu Tao;Xie Jinsen;Zhao Wenbo;Chen Zhenping;Xie Qin;Liu Zijing(University of South China, School of Nuclear Science and Technology, Hengyang, Hunan, 421001, China)

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001

出　　处：《核动力工程》2018年第3期18-22,共5页Nuclear Power Engineering

基　　金：国家自然科学基金(11575079);核反应堆系统设计技术重点实验室开放基金(HT-QT-04-2015001)

摘　　要：熔盐反应堆(MSR)燃料制备方便、中子经济性好、燃料管理灵活,具有直接利用轻水堆乏燃料中超铀核素(TRU)的潜力。本文通过优化燃料选取、栅格参数及燃料/石墨体积分数和去除裂变气体和惰性金属等方法,对TRU燃料热谱MSR堆芯寿期、TRU核素积存量、次锕系核素MA嬗变支持比和TRU焚毁率等进行计算分析,证明TRU燃料热谱MSR可实现长周期定期换料,减少在线换料的难度,同时对MA和TRU核素具有一定的嬗变能力,可降低乏燃料放射性毒性。The molten salt reactor（MSR） features convenient fuel fabrication, good neutron economy and flexible fuel management, has and there is the potential to utilize the TRU produced in the spent fuel of the light water reactor directly. The selection of fuel, lattice parameters and fuel/graphite volume fraction has been optimized in this paper. Through the calculating and analyzing the core lifetime of the TRU fueled thermal spectrum MSR, the stock of TRU, MA-fission ratio and TRU-fission ratio, it proves that thermal spectrum MSR can operate for a long period with long refueling cycle, which can reduce the difficulty of online refueling and have a better transmutation ratio of MA and TRU with lower radioactive toxicity.

关 键 词：热谱熔盐堆 TRU燃料 长周期换料 嬗变 

分 类 号：TL426[核科学技术—核技术及应用]