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A dry conversion device from uranium hexafluoride to uranium tetrafluoride

A conversion device, UF6 technology, applied in the field of dry conversion device from UF6 to UF4, can solve the problems of large amount of waste water, short dry process, long wet process, etc., to achieve The effect of short process flow and strong versatility

Active Publication Date: 2021-01-08
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the wet process has a long process, many equipments, complex processes, and produces a large amount of wastewater, but the process is mature. This method is generally used in my country; the dry process is short and hardly produces wastewater, but the process conditions are not yet fully mature. Each dry conversion device needs to conduct experiments to obtain the best design parameters according to the actual production situation, and then carry out detailed design, which is extremely poor in versatility

Method used

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  • A dry conversion device from uranium hexafluoride to uranium tetrafluoride
  • A dry conversion device from uranium hexafluoride to uranium tetrafluoride
  • A dry conversion device from uranium hexafluoride to uranium tetrafluoride

Examples

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Embodiment 1

[0041] This embodiment provides a dry conversion device from UF6 to UF4, which is applicable to materials with different abundances, and is especially suitable for a dry conversion process that does not generate lumpy products during the reaction process.

[0042] Such as Figure 1 to Figure 6 As shown, the dry reforming device described in this embodiment includes: a nozzle assembly 1 , a reaction furnace 2 , a receiving box 4 , and a charging glove box 7 connected in sequence, and a tail gas filter device connected to the tail gas outlet of the reaction furnace 2 . Specifically, the nozzle assembly 1 is arranged at the gas inlet 201 of the reaction furnace 2, the tail gas outlet 211 of the reaction furnace 2 is connected to the air inlet of the tail gas filter device, and the sediment outlet 209 of the reaction furnace 2 is connected to the feed of the receiving box 4. Port 401 is connected, and the discharge port 405 of the material receiving box 4 is connected with the dis...

Embodiment 2

[0080] This embodiment provides a device for dry conversion of UF6 to UF4, which is applicable to materials with different abundances, and is especially suitable for the dry conversion process of generating lumpy products during the reaction process.

[0081] Such as Figure 7 to Figure 10 As shown, the difference between the dry conversion device described in this embodiment and the dry conversion device described in Example 1 is only that a pair of wheel crushers 5 and a screw crusher are arranged in sequence between the receiving box 4 and the glove box 7. Conveyor 6, and opposite wheel crusher 5 are connected with collection box 4 and screw conveyor 6 respectively. Specifically, the discharge port 405 of the receiving box 4 is connected with the feed port of the wheel crusher 5, the discharge port of the wheel crusher 5 is connected with the feed port 601 of the screw conveyor 6, and the feed port of the screw conveyor 6 The discharge port 606 is connected with the discha...

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Abstract

The invention provides a dry conversion device for uranium hexafluoride to uranium tetrafluoride. According to the invention, spray nozzle assemblies are used for spraying uranium hexafluoride gas andcarbon tetrachloride entrained hydrogen gas into a reaction furnace from channels which are not connected with each other; a tail gas filtering unit is used for filtering tail gas discharged from thereaction furnace to recover a powder material carried in the tail gas; a material receiving box is used for receiving uranium tetrafluoride precipitate discharged from the reaction furnace, and discharges the uranium tetrafluoride precipitate into a material loading glove box when the height of a material in the reaction furnace reaches a preset height and meets preset gas seal requirements; anda material drum used for receiving the uranium tetrafluoride precipitate is arranged in the material loading glove box, such that the next material drum can be replaced through a glove hole and the material loading is continuously performed until the material is completely loaded when the material loading amount of the material drum achieves a preset value. Through cooperative work of constituentparts, the dry conversion device provided by the invention realizes automatic and continuous dry conversion of UF6 to UF4 in a nuclear fuel production line, has short process flow, hardly generates waste water, is applicable to conversion of fuels with different abundances, and has strong generality.

Description

technical field [0001] The invention relates to the technical field of nuclear fuel production, in particular to a dry conversion device from uranium hexafluoride to uranium tetrafluoride. Background technique [0002] The whole process of nuclear fuel preparation before entering the reactor, burning in the reactor and post-processing is called the nuclear fuel cycle. Specifically include: uranium (thorium) resource development, ore processing and smelting, uranium isotope separation and fuel processing and manufacturing, fuel use in reactors, spent fuel reprocessing and nuclear waste treatment and disposal. [0003] In the nuclear fuel cycle, uranium hexafluoride (UF 6 ) to uranium tetrafluoride (UF 4 ) conversion process plays an important role, this is because UF 4 It can not only be used as the starting material for the production of uranium metal, but also be easily converted into other uranium compounds and stored as a practically usable compound form as lean materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C3/42
CPCG21C3/42Y02E30/30
Inventor 侯捷宫本希李芳林江保军翟家海郑亚娟于俊涛蒋雪莹王振宏
Owner CHINA NUCLEAR POWER ENG CO LTD