Accelerator-driven subcritical transmutation reactor core adopting dispersion metal fuel

An accelerator-driven, metal fuel technology, applied in subcritical reactors, fuel elements, nuclear reactors, etc., can solve the problems of high transmutation rate, low MA transmutation rate, and high fuel manufacturing costs, and achieve low proton beam current intensity and high reactor efficiency. The effect of simple core structure and high utilization efficiency

Inactive Publication Date: 2013-05-08
XI AN JIAOTONG UNIV
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Problems solved by technology

[0010] In scheme C, the transmutation rate of MA is high, but it needs to enrich more than 90% 15 N, fuel manufacturing costs are high
[0011] In Scheme D, the fuel for the transmutation of MA is an alloy fuel, which has good compatibility during high-temperature chemical

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  • Accelerator-driven subcritical transmutation reactor core adopting dispersion metal fuel
  • Accelerator-driven subcritical transmutation reactor core adopting dispersion metal fuel
  • Accelerator-driven subcritical transmutation reactor core adopting dispersion metal fuel

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Embodiment Construction

[0033] The structure of the present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0034] Such as figure 1 As shown, an accelerator-driven subcritical transmutation core of the present invention adopts dispersoid metal fuel. Taking the fuel zone of two zones as an example, it includes an outer neutron source zone 1, a buffer zone 2, and a fuel zone from the center of the core to the outside. Inner zone 3, fuel outer zone 4, LBE reflector zone 5, stainless steel reflector zone 6 and shield zone 7, the total core height is 290cm, and the diameter is 359.4cm, of which the height of the active zone is 110cm, and the diameter is 226.8cm.

[0035] Such as figure 2 As shown, the axial lower ends of the fuel inner zone 3 and the fuel outer zone 4 are 50 cm high stainless steel reflective layer 6, and axially upwards are 110 cm high air chamber 8 and 20 cm high stainless steel reflective layer 6. The outer neutron source area...

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Abstract

The invention relate to an accelerator-driven subcritical transmutation reactor core adopting a dispersion metal fuel. The accelerator-driven subcritical transmutation reactor core sequentially comprises an external neutron source zone, a buffer zone, a fuel zone, an LBE (Lead-Bismuth Eutectic) reflecting layer zone, a stainless steel reflecting layer zone and a shielding layer zone from reactor core center to outside, wherein the fuel zone is divided into 2-4 zones from inside to outside; a plurality of fuel assemblies with the same structure, quantity and size are respectively loaded in each fuel zone; the fuel assemblies are composed of a plurality of triangularly-arranged fuel rods; the fuel rods are made from (TRU-10Zr)-Zr dispersion metal; and the Pu contents in the fuel rods of the fuel zones are sequentially increased from inside to outside. According to the invention, the fuel rods in the fuel zones are made from the (TRU-10Zr)-Zr dispersion metal, so that harder neutron spectrum is provided for the reactor core, the transmutation of minor actinides (MA) is benefited and the annual transmutation rate is up to about 15% and higher than the annual transmutation rate 10% of a Japanese scheme; and the fuel zone of the reactor core is divided, the Pu contents of the zones are at a certain proportion, the power peak density is low and the maximum value is not more than 450W/cm<3> under the condition that the safety is guaranteed.

Description

technical field [0001] The invention relates to an accelerator-driven subcritical transmutation core, in particular to an accelerator-driven subcritical transmutation core using dispersoid metal fuel. Background technique [0002] The minimization of nuclear waste is one of the key issues that must be solved for the sustainable development of nuclear energy. In recent decades, the nuclear energy community has been exploring the final treatment methods of minor actinides (MA) and long-lived fission products (LLFP). After comparative analysis, it was found that the final treatment method of nuclear waste nuclides is separation and transmutation. [0003] Due to its inherent safety and advantages in transmutation of nuclear waste, the accelerator-driven subcritical system (ADS) has been widely recognized in industry and has become one of the most popular new reactors in nuclear waste treatment. At present, the ADS being developed internationally mainly includes the following f...

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Application Information

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IPC IPC(8): G21C1/30G21C3/02G21F9/28
CPCY02E30/37Y02E30/40Y02E30/30
Inventor 吴宏春李勋昭郑友琦
Owner XI AN JIAOTONG UNIV
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