Method and system for subcritical nuclear rubbish treatment and nuclear fuel production based on fissioner neutron breeding

A fission fuel, subcritical technology, applied in the field of nuclear energy, can solve problems such as difficult realization of technology and engineering, achieve the effect of improving processing efficiency, ensuring stability and safety, and increasing reactivity

Inactive Publication Date: 2005-03-09
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] In order to achieve high efficiency, the third method above generally requires a high intensity external neutron source, but this is difficult to achieve in terms of technology and engineering

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  • Method and system for subcritical nuclear rubbish treatment and nuclear fuel production based on fissioner neutron breeding
  • Method and system for subcritical nuclear rubbish treatment and nuclear fuel production based on fissioner neutron breeding

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Embodiment Construction

[0020] Referring to the accompanying drawings, 1, 2, 3, 4, and 5 represent respectively the first zone, the second zone, the third zone, the fourth zone, and the fifth zone of the nuclear waste treatment and nuclear fuel production system of the present invention. Steel plate dividers.

[0021] This accompanying drawing is a cross-sectional view of a cylindrical structure. The structural shape of the actual device can be cylindrical, spherical and annular or their approximate shapes, mainly depending on the type of the external neutron source generating device.

[0022] Zone 1: The outer neutron source generation area. The outer neutron source can be generated by D-T fusion reaction or by high-energy proton spallation reaction, both of which have relatively high energy.

[0023] Zone 2: Actinides processing zone, composed of high-level actinides, fissionable fuels, coolants and structural materials. Among them, high-level radioactive waste refers to the long-lived actinides ...

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Abstract

The present invention discloses a method for making subcritical nuclear waste material treatment and nuclear fuel production based on fissionable material neutron proliferation and its system. The exterior of external neutron source generation zone is enclosed successively with actinide elements treating zone, fissionable fuel proliferation zone, fission product treating zone and reflecting and shielding zone, all the zones are separated by means of structure material. The actinide elements treating zone includes actinide elements, fissionable fuel mixture and covering structure material; the fissionable fuel proliferation zone includes natural uranium or thorium or lean uranium and covering structure material; the fission product treating zone includes high radioactive fission product and covering structure material and neutron slowing agent, and the reflecting and shielding zone is formed from graphite, boron carbide, stainless steel and lead, etc.

Description

technical field [0001] The invention belongs to nuclear energy technology, and more specifically relates to a method and system for nuclear waste treatment and nuclear fuel production. Background technique [0002] Long-lived radioactive waste is long-lived radioactive fission products (such as 99 Tc, 129 I. 137 Cs, etc.) and actinides (such as Pu, Np, Am, Cm, etc.) have high toxicity and long life, and are very difficult to handle. In the early days of the international community, the general recommendations for dealing with long-lived nuclear waste include the following three methods: first, deep burial to allow it to decay naturally. This method takes a long time (millions to tens of millions of years). For example, the Yucca Mountain Project in the United States cost nearly 2 billion US dollars. However, it is impossible to guarantee that the geological structure will not change in millions of years. It may also enter the biosphere again. Second, the use of speciall...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/30G21G1/06
Inventor 吴宜灿
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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