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Deoxidized anode, fluoride fused salt electrolysis deoxidizing device and electrolytic method

A technology of deoxidation anode and electrolysis method, applied in the direction of electrolysis process, electrolysis components, electrode shape/type, etc., can solve the problem of unclean removal, etc., and achieve the effect of safe electrolysis operation, safe operation and simple production process

Inactive Publication Date: 2014-02-12
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the existing graphite anode electrolysis method to remove the impurity oxygen in the fluoride molten salt. The oxygen may re-enter the fluorine molten salt with a certain solubility in the whole electrolytic system, and continue to exist in the form of oxide impurities. In addition to the unclean defect, a deoxidizing anode, a device and an electrolytic method for electrolytic deoxidation of fluoride molten salt are provided

Method used

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  • Deoxidized anode, fluoride fused salt electrolysis deoxidizing device and electrolytic method
  • Deoxidized anode, fluoride fused salt electrolysis deoxidizing device and electrolytic method
  • Deoxidized anode, fluoride fused salt electrolysis deoxidizing device and electrolytic method

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Embodiment 1

[0040] Such as figure 1 and figure 2 As shown, a deoxidation anode includes a zirconia solid electrolyte container 1, a sealing material 2 and an electrode lead 3; the zirconia solid electrolyte container 1 is used to accommodate a deoxidizer 5, and the sealing material 2 is used to seal the A zirconia solid electrolyte container 1; the electrode lead wire 3 extends through the sealing material 2 into the zirconia solid electrolyte container 1 to contact with a deoxidizer; the zirconia solid electrolyte is made of zirconia and a stabilizer.

Embodiment 2

[0042] Such as image 3 As shown, the device for the electrolytic deoxidation of the fluoride molten salt includes: a casing 15, and the casing 15 is provided with: a container 7 for holding the fluoride molten salt, a Described deoxidation anode, a cathode 4, an inert gas inlet 8, an inert gas outlet 14; a cooling water device; the cathode 4 and the deoxidation anode are used to hold in the container The fluoride molten salt 6 in the electrolysis is electrolyzed; the cooling water equipment is used to cool the device during the electrolysis process; the inert gas inlet 8 and the inert gas outlet 14 are used to make the electrolysis process in Under the protection of inert gas.

Embodiment 3

[0044] Such as image 3 As shown, the remaining parts are the same as in Example 2, but the device for electrolytic deoxidation of fluoride molten salt also includes a sampling rod 11 for sampling and analysis. The container for holding fluoride molten salt is a crucible 7, a cooling water device, and the cooling water device is used to carry out the electrolytic deoxidation of the described device for fluoride molten salt during the electrolysis process. Cooling; 9 is the cooling water inlet, 13 is the cooling water outlet; the device for electrolytic deoxidation of fluoride molten salt also includes a flange 10 for sealing the housing and a flange 10 for sealing the A sealing ring 12 of the flange; for the sake of clarity, the sealing ring is not drawn here as being in contact with the flange. The cooling water inlet 9 and the cooling water outlet 13 are located on the flange 10; the cooling water inlet communicates with the cooling water outlet.

[0045] The zirconia soli...

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Abstract

The invention discloses a deoxidized anode, a fluoride fused salt electrolysis deoxidizing device and an electrolytic method. The deoxidized anode comprises a zirconium oxide solid electrolyte container, a sealing material and an electrode lead, wherein the zirconium oxide solid electrolyte container is used for containing a deoxidizer; the sealing material is used for sealing the zirconium oxide solid electrolyte container; the electrode lead penetrates through the sealing material and extends into the zirconium oxide solid electrolyte container to contact with the deoxidizer; a zirconium oxide solid electrolyte comprises zirconium oxide and a stabilizing agent; the stabilizing agent is one or more of yttrium oxide, magnesium oxide and calcium oxide; the mole percentage of the stabilizing agent is 5%-30%; the deoxidizer is a metal which achieves reacted Gibbs free energy less than 0 when being reacted with oxygen. According to the electrolytic method, the zirconium oxide is adopted as the deoxidized anode, the condition is easy to control, the cost is low, and the electrolyzed impurity oxygen is easily separated from fluoride fused salt.

Description

technical field [0001] The invention relates to a deoxidation anode, a device and an electrolysis method for electrolytic deoxidation of fluoride molten salt. Background technique [0002] Fluoride molten salts were considered as molten salt reactor coolants in the middle of the last century, mainly because fluoride molten salts have high heat capacity, good fluidity and thermal conductivity, wide liquid working range, It has excellent thermochemical properties and material compatibility such as low vapor pressure and good chemical stability, and can work at high temperature and normal pressure (Progress in Nuclear Energy, 2005, 46(1):77-99). When fluoride molten salt is used as molten salt reactor coolant, its purity must meet the requirements of nuclear purity. At present, the main method for preparing fluoride salts is to react hydrogen fluoride with metal oxides, hydroxides, carbonates, etc., and low-concentration oxygen will remain in the molten salt during the prepara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/24C25B11/02
Inventor 左勇谢宏伟申淼翟玉春谢雷东
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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