Thorium Fuel Cycle as a Promising Energy Source in and after 21st Century

钍燃料循环作为 21 世纪及以后有前景的能源

基本信息

批准号：
02302089
负责人：
KIMURA Itsuro
金额：
$ 6.53万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1992
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02302089/
关键词：
thorium thorium fuel thorium cycle uranium 233 reactor design critical experiment molten salt reprocessing 溶融塩炉ハイブリッド被覆粒子燃料

项目摘要

1. Design studies of thorium fueled reactors: (1) Nuclear data; mass yield and neutron spectrum of the fission of U-233 and double differential cross section of Th-232 for 18 MeV neutrons were measured. (2) Reactor design studies; molten salt reactors for transmutation of long-lived minor actinides, fast reactors loading Th-232, three types of thermal reactors for U-233 production, molten salt power reactors named FUJI and mini-FUJI and accelerator breeders were designed. (3) Critical experiment of thorium loaded cores was carried out at KUCA and the result is compared with calculation. (4) Preliminary study of 14 MeV neutron transport in thorium and in thoria was done at KUCA. 2. Studies of thorium fuels and other reactor materials: (1) Thorium fuels; U-Th-Ti-Zr alloy was newly made and its hydrogen absorption properties were measured. The chemical diffusion coefficients of oxygen in ThO_2-UO_<2+x>was obtained. High burnup behavior of thorium oxide fuels was observed. (2) Molten salt studies; corrosion of Ni and Cr by residual moisture in molten LiF-BeF_2, diffusion coefficient of actinides and fission products in molten LiF-BeF_2, electrochemical behavior of Y in molten LiCl-KCl-Nacl and release rate of T from molten LiF-BeF_2 were measured. (3) Uranium enrichment; Anomalous isotope effects in chemical exchange uranium enrichment process was discovered. (4) Reprocessing; Solvent extraction of Th, U and some metals from nitrate solution of organophosphinic acid was investigated. 3. Study of radiation safety in thorium cycle: A passive integrating thoron(^<222>Rn) monitor was developed and was applied to measure thoron and radon(^<220>Rn) in a city.

1。刺激反应堆的设计研究：（1）核数据；测量了U-233的裂变的质量产量和中子谱，并测量了18 MeV中子的Th-232的双差分横截面。（2）反应堆设计研究；熔融盐反应器，用于长寿命的次要肌动剂，快速反应器，加载Th-232的快速反应器，U-233生产的三种类型的热反应器，名为Fuji和Mini-Fuji和Mini-Fuji和Accelerator育种器的三种类型的热反应器。（3）在库卡（Kuca）进行了thor负载核心的临界实验，并将结果与计算进行了比较。（4）在库卡（Kuca）进行的14个MEV中子运输和索里亚的14个MEV中子运输的初步研究。 2。对thor燃料和其他反应堆材料的研究：（1）or燃料；新生产的U-Th-Ti-ZR合金是新生产的，并测量了其氢吸收特性。获得了THO_2-UO_ <2+X>中氧的化学扩散系数。观察到氧化th刺燃料的高燃烧行为。（2）熔融盐研究；测量了Ni和Cr的残留水分，在熔融LIF-BEF_2中，静脉内化体的扩散系数和熔融LIF-BEF_2中的裂变产物的扩散系数，在熔融LICL-KCL-NACL中Y的电化学行为以及T与Molten Lif-Bef_2的T释放速率。（3）铀富集；在化学交换中发现了异常的同位素效应。（4）后处理；研究了从有机磷酸酸的硝酸盐溶液中提取溶剂。 3。thor循环中的辐射安全性研究：开发了一个被动整合Thoron（^<222> RN）监视器，并应用于城市中的Thoron和Radon（^<220> RN）。