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System for transmuting nuclear wastes by utilizing isotopic neutron source

A neutron source and nuclear waste technology, applied in the field of nuclear energy science and engineering, to achieve the effects of high safety, simple system and good environmental performance

Active Publication Date: 2017-01-18
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the present invention aims at the difficulties and deficiencies of the current nuclear waste transmutation system technology, and provides a new system for transmuting nuclear waste using isotope neutron sources with simple operation, safe operation and environmental friendliness

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  • System for transmuting nuclear wastes by utilizing isotopic neutron source
  • System for transmuting nuclear wastes by utilizing isotopic neutron source

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 As shown, the present invention includes: a nuclear waste assembly 1 , a neutron source assembly 2 , a liquid medium 3 , a heat exchanger 4 , a graphite reflection layer 5 , a concrete shielding layer 6 and a refueling mechanism 7 . The neutron source component 2 uses isotopic neutron sources with high output as much as possible, such as Cf-252 neutron sources, etc. Of course, discarded isotopic neutron sources such as medical and scientific research can also be used to achieve the purpose of fully utilizing resources. In order to ensure full utilization of the isotope neutron source, the neutron source assembly 2 is made into a cylindrical shape with a line length. The nuclear waste assembly 1 is made of MA. In order to ensure sufficient reaction, the nuclear waste assembly 1 is also made into a cylindrical shape with ...

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Abstract

The invention discloses a system for transmuting nuclear wastes by utilizing an isotopic neutron source. The system comprises nuclear-waste components (1), neutron source components (2), a liquid medium (3), heat exchangers (4), a graphite reflecting layer (5), a concrete shielding layer (6) and a material exchange device (7). The system is characterized in that spontaneous neutrons of the neutron source components (2) react with the nuclear-waste components (1), heat generated in the reaction process is cooled by the liquid medium and is discharged by the heat exchangers (4); when the neutron source components (2) are completely decayed or the nuclear-waste components (1) are completely transmuted, the neutron source components (2) and the nuclear-waste components (1) are taken out of the material exchange device (7). The system disclosed by the invention has the effects that the transmuting process is completely and spontaneously carried out, human intervention can be avoided, and no new wastes are generated; and the system has the advantages of simple structure, high safety coefficient and good environment-protective performance and the like, and opens up a new path for treating the nuclear wastes.

Description

technical field [0001] The invention belongs to the field of nuclear energy science and engineering, and in particular relates to a system for transmuting nuclear waste by using an isotope neutron source. Background technique [0002] Nuclear waste has a long life, high toxicity, and is easy to migrate and penetrate into the biosphere. If it is not handled properly, it will cause water, air, and soil pollution, damage the natural ecological environment, and indirectly or directly affect human survival. The hazards of nuclear waste mainly come from minor actinides (abbreviated as MA) and long-lived fission products (abbreviated as LLFP). A pressurized water reactor power station with a million-kilowatt class unloads about 20kg of MA and 30kg of LLFP every year. At present, the ideal nuclear waste disposal scheme is mainly separation and transmutation, that is, the MA and LLFP in nuclear waste are separated, made into fuel elements, and then irradiated with a neutron source t...

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Application Information

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IPC IPC(8): G21F9/00G21F9/28
CPCG21F9/00G21F9/28
Inventor 张文亮吴宜灿王明煌付雪微宋婧
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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