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Method and device for contacting two non miscible liquids without mixing them

A liquid and liquid reaction technology, applied in the field of chemical separation and contact technology, can solve problems such as degradation, and achieve the effects of low energy consumption, easy remote operation, and high efficiency

Inactive Publication Date: 2009-10-21
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of these devices is also limited by the occurrence of corrosion problems which rapidly degrade their operation

Method used

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  • Method and device for contacting two non miscible liquids without mixing them
  • Method and device for contacting two non miscible liquids without mixing them
  • Method and device for contacting two non miscible liquids without mixing them

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0173] NdF in the from solution 3 During the test for the recovery of rubidium (Nd), the and Figure 1~4 The associated extraction device.

[0174] Operation mode includes 10g NdF 3 Dissolved to 300g LiF / AlF 3 in.

[0175] The salt mixture thus obtained is placed in a graphite crucible with a volume of 1 liter, and then melted in a shaft furnace at 700°C to 800°C.

[0176] For the extraction medium, 100g Al is placed in six perforated, perforated baskets with a volume of 0.14 liters, the pore geometry of the basket corresponds to image 3 , And then vacuum melting the salt at 800°C.

[0177] Then the contact between the molten metal and the salt medium takes place in a rough vacuum, after which argon gas covers the inside of the furnace at atmospheric pressure to avoid any excessive evaporation of the salt.

[0178] For this test, the extraction time is 24 hours of contact between the two media.

[0179] After 24 hours, the turntable support with six baskets was slowly raised at a ...

Embodiment 2

[0185] Three more experiments are needed to test the possibility of removing the turntable from the salt without losing aluminum, which involve a melting / cooling cycle for aluminum contained in a perforated, perforated basket.

[0186] These experiments were performed on crucibles containing aluminum whose height was 10% lower than the maximum height calculated from Equation 1 depending on the geometry of the pores.

[0187] The height of Al thus used is between 1.5 cm and 8 cm. The weight loss measurement performed for each crucible showed a weight change of about 0.5%. This good result confirms the possibility of keeping liquid aluminum in an argon atmosphere without the hydrostatic back pressure of molten salt.

[0188] After three melting / cooling cycles, no damage to the crucible containing aluminum was observed. Therefore, the design of the system makes it possible to achieve good mechanical characteristics facing the problem of uneven expansion (thermal cycle) of materials. ...

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Abstract

A method for contacting, without mixing, first and second immiscible liquids, in which the following steps are carried out: -a) the first liquid is placed in at least one container having a wall made of a solid material which does not react with the first and second liquids, said wall comprising one or more through-openings; the first liquid being non-wetting relative to said solid material composing the wall; -b) said first container is immersed in a volume of the second liquid so that the first liquid is in contact with the second liquid at the level of said through-openings; -c) the first liquid is left in contact with the second liquid for a sufficient amount of time so that an exchange or a transfer of matter occurs between the first and second liquid; -d) the first liquid is removed from the volume of the second liquid. Device for the implementation of this method.

Description

Technical field [0001] The invention relates to a method and a device for contacting two immiscible liquids without mixing. [0002] Specifically, the present invention relates to a method and apparatus for bringing molten metal and salt into contact at high temperatures, which may be as high as 800°C, for example. [0003] The technical field of the present invention can be defined as the field of mass transfer in a general sense, more specifically the field of chemical separation and contact technology, and more specifically the field involving extraction technology of immiscible liquids. [0004] The technical field of the present invention is more accurately but not exclusively the field of high-temperature liquid / liquid extraction systems, which are also called pyrocontactors, in which the liquid salt phase and the molten metal are brought into contact with each other . Background technique [0005] Traditional reprocessing by "hydrometallurgy" of highly burned nuclear fuel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04G21C19/48
CPCG21C19/48B01D11/04Y02E30/30Y02W30/50B01D11/043B01D11/0476B01D35/28C21C7/04
Inventor 让-皮埃尔·费罗让·迪阿默特弗洛朗·甘迪奥利维耶·科诺卡
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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