Plutonium oxalate cup-type continuous precipitation device

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...

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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

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