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A Neptunium Dioxide-Plutonium Dioxide Dissolver for Hot Chamber

A neptunium dioxide and plutonium dioxide technology, which is applied in the field of neptunium dioxide-plutonium dioxide dissolvers for hot cells, can solve problems such as the difficulty of dissolving hot nitric acid

Active Publication Date: 2022-03-11
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Neptunium and plutonium elements are produced in the neptunium target in the form of neptunium and plutonium oxides, but hot nitric acid is difficult to dissolve neptunium and plutonium oxides

Method used

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  • A Neptunium Dioxide-Plutonium Dioxide Dissolver for Hot Chamber
  • A Neptunium Dioxide-Plutonium Dioxide Dissolver for Hot Chamber

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] A neptunium dioxide-plutonium dioxide dissolver for a hot cell provided by the present invention is used for dissolving a neptunium target containing neptunium and plutonium elements in a hot cell, and is composed of a dissolution tank 1, an integral electrode 14, and a circuit plug Components, hydraulic plug components and control system.

[0030] Such as figure 2 As shown, the dissolution tank 1 is a vertical double elliptical head container (about 1000-1500mm in length, 1000-1500mm in width, and 1500-3000mm in height), resistant to strong acid and high temperature, and made of metal titanium or stainless steel, etc., which are resistant to nitric acid corrosion The material is divided into an upper tank body and a lower tank body. The upper tank body and the lower tank body are connected by a flange 2, and a fluorine rubber sealing ring is u...

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PUM

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Abstract

The invention belongs to the technical field of spent fuel reprocessing, and in particular relates to a neptunium dioxide-plutonium dioxide dissolver for a hot cell, which is used for dissolving neptunium targets containing neptunium and plutonium elements in a hot cell, including strong acid resistance A high-temperature dissolving tank (1), the periphery of the dissolving tank (1) is provided with a heating device; the dissolving tank (1) is also pierced with a cleaning pipe (4) for adding nitric acid into the dissolving tank (1), for adding and dissolving The feed pipe (5) of liquid, the bubbling pipe (6) that is used to pass into the disturbing gas in the solution in the dissolution tank (1), is used to discharge the discharge pipe (7) of solution; The integral electrode (14) which is installed inside the dissolving tank (1) is replaced; it also includes a control system for remote operation of the replacement of the integral electrode (14). The invention can be applied in a hot chamber to dissolve a neptunium target; the dissolution reaction can be remotely operated by a manipulator in the hot chamber; the neptunium target can be fully dissolved.

Description

technical field [0001] The invention belongs to the technical field of spent fuel reprocessing, and in particular relates to a neptunium dioxide-plutonium dioxide dissolver for a hot cell. Background technique [0002] After the neptunium target (irradiation target) is irradiated out of the reactor, it contains converted plutonium and remaining neptunium and other radioactive elements. Before the chemical extraction and separation of neptunium and plutonium, it is first necessary to extract A neptunium target of plutonium element is dissolved. Neptunium and plutonium elements are produced in the neptunium target in the form of neptunium and plutonium oxides, but hot nitric acid is difficult to dissolve neptunium and plutonium oxides. [0003] Catalytic indirect electrochemical oxidation technology can be used for NpO 2 , PuO 2 For dissolution, the catalytic electrochemical oxidation technology using Ag(II) as a catalyst can realize rapid and complete dissolution of insolu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C19/46
CPCG21C19/46Y02W30/50Y02E30/30
Inventor 何辉唐洪彬朱礼洋常尚文叶国安郭建华刘聪李斌刘占元刘协春李峰峰蒋德祥申震周贤明
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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