Fluidized bed device for preparing uranium nitride and using method thereof

Abstract

The invention provides a fluidized bed device for preparing uranium nitride. The fluidized bed device comprises a gas system, a mixing system, a low-temperature fluidized bed, a high-temperature fluidized bed, a tail gas treatment device and an absorption tower; wherein the gas system is respectively connected with the low-temperature fluidized bed and the high-temperature fluidized bed, the mixing system is connected with the low-temperature fluidized bed, the low-temperature fluidized bed is connected with the high-temperature fluidized bed, the low-temperature fluidized bed and the high-temperature fluidized bed are respectively connected with the tail gas treatment device, and the tail gas treatment device is connected with the absorption tower. The invention further provides a using method of the fluidized bed device for preparing uranium nitride. According to the invention, the reaction steps are respectively controlled to be carried out in the low-temperature fluidized bed and the high-temperature fluidized bed, so that the reaction can be carried out smoothly under different temperature requirements; and the tail gas is purified in the tail gas treatment device, so that thedischarged gas has no pollution to the environment. The method can ensure high uranium nitride preparation reaction yield and complete tail gas treatment.

Description

technical field [0001] The invention relates to the technical field of nuclear engineering, in particular to a fluidized bed device for preparing uranium nitride and a use method thereof. Background technique [0002] Nuclear energy is a clean, efficient and safe energy source, and currently occupies an important position in the world's energy structure. In recent years, with the development of the nuclear industry, various advanced reactors have been extensively studied. With the gradual miniaturization of reactors, long refueling periods, and metal cooling, new requirements are constantly being put forward for nuclear fuel as the core material of reactors: high melting point, high thermal conductivity, high atomic density of heavy metals, and compatibility with cladding materials and coolants High, low expansion, low fission gas release and manufacturability, that is, good fuel breeding performance, high thermal conductivity, high thermal stability, good chemical compatib...

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Problems solved by technology

The above research mainly focuses on method research, and there are few researches on special equipment for the preparation of uranium nitride, and all of them are intermittent production equipment.

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