氟盐球床堆中钍铀的基本物理参量研究

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Study on Basic Neutron Physical Parameters of Thorium-Uranium Used in Pebble Bed Fluoride Salt-Cooled High Temperature Reactor

1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China;
2. University of Chinese Academy of Sciences, Beijing, 100049, China;
3. Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Chinese Academy of Sciences, Shanghai, 201800, China

摘要: 通过计算氟盐球床堆单球栅元物理模型,分析不同C/U、C/Th和不同燃耗深度下钍及铀球的中子产能、单位铀累积中子产量、单位钍累积中子销量等基本性质。结果表明,C/Th取80较为合适,钍燃耗深度范围为140～200 MW·d/kg(Th);C/U取400～600范围较为合适,铀燃耗深度范围为180～200 MW·d/kg(U);堆芯径向选择Th-U-Th布置较为合理。
- 钍 /
- 氟盐 /
- 球床堆 /
- 转化 /
- 中子产能
Abstract: By analyzing the energy production per neutron, neutron cumulative production per uranium and neutron cumulative sales per thorium in unit cell of Pebble Bed Fluoride Salt-cooled High Temperature Reactor（PB-FHR）, some basic neutron physical parameters are determined. For the optimal choice, C/Th ratio is about 80, and the discharge burnup of thorium is between 140~200 MW·d/kg（Th）; C/U ratio is between 400~600, and the discharge burnup of uranium is between 180~200 MW·d/kg（U）. It is beneficial to set the core radial layout as thorium-uranium-thorium pattern.
- Thorium /
- Fluoride salt /
- Pebble bed reactor /
- Transformation /
- Energy production per neutron