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Fusion-fission hybrid reactor transmutation fuel assembly

A fuel assembly and hybrid reactor technology, applied in fusion reactors, thermonuclear fusion reactors, reactor fuel materials, etc., can solve the problems of large plutonium loading, deep subcriticality, etc., achieve good transmutation effect, satisfy production capacity and self-sustainability, The effect of good core breeding performance

Pending Publication Date: 2021-04-02
CHINA NUCLEAR POWER ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to balance the deep subcriticality of the system caused by Na cooling, the mass fraction of Pu in the fuel reached 26.9%, and the initial plutonium loading was large

Method used

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  • Fusion-fission hybrid reactor transmutation fuel assembly
  • Fusion-fission hybrid reactor transmutation fuel assembly
  • Fusion-fission hybrid reactor transmutation fuel assembly

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] like figure 1 As shown, the fusion-fission hybrid reactor transmutation fuel assembly provided in this embodiment includes a six-layer structure arranged in sequence along the thickness direction, and each layer structure includes several grid units arranged along the height direction with transmutation fuel 1, which can be adopted The depleted uranium MOX zirconium alloy with a mass percentage of Pu of 1%-5% and a mass percentage of MA nuclide of 3%-11% is used as the transmutation fuel. The depleted uranium MOX zirconium alloy refers to the uranium component in the uranium-zirconium alloy ...

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Abstract

The invention relates to a fusion-fission hybrid reactor transmutation fuel assembly which comprises multiple layers of structures sequentially arranged in the thickness direction, each layer of structure comprises a plurality of grid units arranged in the height direction, a horizontally-penetrating cooling pipe is arranged in fuel of each grid unit, and the extending direction of the cooling pipes is perpendicular to the thickness direction of the fuel assembly; and the cooling pipe is internally provided with a coolant that can flow, wherein fuel of the grid unit adopts a depleted uranium MOX zirconium alloy containing Pu and MA nuclides as transmutation fuel. By reasonably preparing fuel components and a moderator / coolant, the effective MA nuclide transmutation function is realized under the condition of meeting the requirements of energy amplification and tritium propagation ratio of a subcritical energy reactor core.

Description

technical field [0001] The invention belongs to nuclear power design technology, and in particular relates to the design of a transmutation fuel assembly for a fusion-fission hybrid core driven by a fusion neutron source. Background technique [0002] As nuclear energy becomes an important part of the current energy growth, its sustainable development inevitably faces the problem of nuclear waste disposal, especially the disposal of some long-lived and high-level radioactive nuclear waste. The long-term risk of nuclear power plants unloading spent fuel is determined by these long-lived high-level nuclear wastes. Some nuclides must decay for hundreds of thousands of years before their radiotoxicity can be reduced to the level of natural uranium ore. Even if the geological deep burial method is adopted, it will bring great hidden dangers because the geological stability is difficult to guarantee. [0003] In order to minimize nuclear waste, the advanced nuclear fuel cycle con...

Claims

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Application Information

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IPC IPC(8): G21C15/28G21C15/04G21C3/60G21B1/11
CPCG21C15/28G21C15/04G21C3/60G21B1/11Y02E30/10Y02E30/30
Inventor 邵增刘国明陈添于淼易璇霍小东杨海峰王红霞张成龙费钧天李想
Owner CHINA NUCLEAR POWER ENG CO LTD
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