Plutonium oxalate cup-type continuous precipitation device

A precipitation device, the technology of plutonium oxalate, is applied in the sedimentation tank, carboxylate preparation, carboxylate preparation and other directions, which can solve the problem that the batch precipitation process cannot be continuously fed, the quality of plutonium dioxide products is affected, and the size of precipitated particles is not well controlled. and other problems, to reduce the contamination of the container, improve the aging effect, and prevent the blockage.

Inactive Publication Date: 2021-07-02
HARBIN ENG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The batch precipitation process has disadvantages such as inability to continuously feed materials, small processing capacity, long operating time, and poor control of the size of precipitated particles, which affects the quality of plutonium dioxide products. An important means of high-end technical level

Method used

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  • Plutonium oxalate cup-type continuous precipitation device
  • Plutonium oxalate cup-type continuous precipitation device

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] The technical solution adopted in this specific embodiment is: it includes a sedimentation tank 1, an inclined overflow weir 2, a stirring device 3, a head 4, a reaction tank 5, a sedimentation channel 6, a conical buffer plate 7, a heat preservation jacket 8, Temperature sensor 9, liquid level monitor 10, feed port 11, discharge port 12; stirring device 3 consists of motor 3-1, stirring shaft 3-2, turbine type straight blade stirring paddle 3-3, pump wheel 3- 4 components, wherein the turbine flat-blade stirring paddle 3-3 is connected by the stirring shaft 3-2 above the pump wheel 3-4, and the motor 3-1 drives the operation; the feed port 11 is composed of oxalic acid feed port 11-1 and nitric acid The plutonium feed port 11-2 is formed, and each feed port is provided with a deflector 11-3 and a diversion hole 11-4; the react...

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Abstract

The invention provides a plutonium oxalate cup-type continuous precipitation device. The plutonium oxalate cup-type continuous precipitation device comprises a precipitation tank, an inclined overflow weir, a stirring device, an end socket, a reaction tank, a precipitation channel, a conical buffer plate, a heat preservation jacket, a temperature sensor, a liquid level monitor, a feed port and a discharge port, The stirring device consists of a stirring shaft, a turbo type straight blade stirring paddle and a pump wheel, and is used for sucking and stirring mixed feed liquid under the driving of a motor. The reaction tank is arranged in the precipitation tank, and an inclined overflow weir is arranged at the top of the reaction tank, so that the precipitation slurry after reaction is smoothly discharged along the precipitation channel. The top of the precipitation tank is sealed by the end socket. The device has the beneficial effects that continuous precipitation is realized, the plutonium oxalate aging condition and time can be ensured in the equipment, and the quality of oxalate crystals is ensured while the high yield is ensured.

Description

technical field [0001] The invention relates to a precipitation device, in particular to a plutonium oxalate cup type continuous precipitation device. Background technique [0002] The main task of the spent fuel reprocessing plutonium tail is to convert it into plutonium dioxide products by plutonium oxalate precipitation and burning. At present, in the plutonium oxalate precipitation process, France and some countries have their own continuous precipitation process. However, due to the late start of my country's spent fuel treatment technology, my country's plutonium oxalate precipitation adopts a batch process. [0003] The batch precipitation process has disadvantages such as inability to continuously feed materials, small processing capacity, long operating time, and poor control of the size of precipitated particles, which affects the quality of plutonium dioxide products. An important means of high-end technical level. Contents of the invention [0004] The purpos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/02B01J19/18C07C51/41C07C55/07
CPCB01D21/02B01J19/18C07C51/412
Inventor 赵芬曾庆彬刘雨熙周羽侯洪国何普涌袁纪臣
Owner HARBIN ENG UNIV
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