Method and device for fast breeding and converting nuclear fuel

Abstract

The invention discloses a method and a device for fast multiplicating and transforming nuclear fuel with high inherent security and low cost, and the method and the device adopt 'moving solid nuclear fuel' which can flow and is similar to fluid, can be applied in a fast neutron reactor, and produce more nuclear fuel with less fissile fuel initial installation quantity and lower cost in a shorter time, thus satisfying the nuclear fuel demand at the current world nuclear power big development stage. The method and the device for fast multiplicating and transforming nuclear fuel are real nuclear reactors with inherent security, and can thoroughly eliminate the serious accident of massive radioactive release caused by element melting of the nuclear fuel which still possibly occurs in the current nuclear power station.

Description

technical field [0001] The present invention relates to the technical field of nuclear fuel multiplication and transformation, in particular to a method and device for rapid multiplication and transformation of nuclear fuel with high inherent safety and low cost, wherein the flowable, fluid-like "flowing solid nuclear fuel" can be used Applied in fast neutron reactors, with less initial charge of fission fuel, more nuclear fuel can be produced in a shorter time and at a lower cost, so as to meet the nuclear fuel demand in the current world nuclear energy development stage. This method and device for rapidly multiplying and transforming nuclear fuel is a real inherently safe nuclear reactor, which can completely eliminate serious accidents that may still occur in current nuclear power plants due to the melting of nuclear fuel elements resulting in a large amount of radioactive leakage. Background technique [0002] With the continuous and rapid development of the global econo...

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Problems solved by technology

[0009] Although, it is generally believed that in the current design of fast neutron reactors, there are also multiple restrictions to greatly increase the fuel specific power, for example: the maximum safe temperature of nuclear fuel (for example, it needs to be lower than the melting point of uranium oxide-plutonium fuel), including The maximum safe temperature of the shell (to avoid cracking or creep damage under internal pressure), the delivery power of the large flow of heat transfer agent required by the high specific power is too high, the high specific power produces high radiation damage to the core structural materials, and The loading and unloading cycle of fuel elements is too short, etc.; but if the fuel elements, core structure and thermal hydraulic design of the breeder conversion reactor are fundamentally changed, it is entirely possible to overcome the above limitations and greatly increase the fuel specific power, thus greatly speeding up the nuclear fuel production process. proliferation and transformation rate

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