KR102092600B1 - Reduction apparatus and method of rarioactive metal oxide integrated with regeneration apparatus - Google Patents

Abstract

Reduction device-integrated radioactive metal oxide reduction device according to an embodiment of the present invention, an electrolytic device that generates a metal and a reaction gas through electrolysis of an electrolyte, and using a metal to reduce the radioactive metal oxide and the radioactive metal oxide A reduction device for generating an electrolyte in which the first product produced during reduction is mixed, and a regeneration device for separating the first product from the electrolyte and reacting the separated first product with a reaction gas to regenerate the electrolyte.

Description

REDUCTION APPARATUS AND METHOD OF RARIOACTIVE METAL OXIDE INTEGRATED WITH REGENERATION APPARATUS

The present application relates to an apparatus and method for reducing radioactive metal oxide integrated with a regeneration device.

The electrolytic reduction process of pyroprocessing converts the spent fuel in the form of oxide into a metal form and supplies it to the subsequent process, the electrorefining process. The electrolytic reduction process includes (1) a process of producing Li metal by applying electricity to molten LiCl (electrolyte) (2), and (2) a process in which the produced Li metal converts spent fuel in the form of oxide into metal form (Reduction process).

Oxygen ions are generated in the process of conversion of oxide to metal (reduction reaction), and the generated oxygen ions are present in the molten salt in the form of Li ₂ O, or are converted to oxygen gas at the anode. Due to limitations of the material transfer rate and the chemical reaction rate, Li ₂ O is accumulated in the molten LiCl as the oxygen ion is reduced. Due to the continuous accumulation of Li ₂ O, the reduction reaction is difficult to proceed further, and in some cases, the reverse reaction (reoxidation reaction) is predominant. Therefore, in this reduction step, it is required to maintain the concentration of Li ₂ O constant.

On the other hand, in order for lithium metal produced at the cathode through electrolysis to effectively participate in the reaction, continuous contact with the oxide is required. However, (1) low solubility of Li metal in LiCl molten salt (0.29 wt% dissolved at 650 ° C), (2) LiCl molten salt (liquid density: 1.55 g / cm ³ ) and Li metal (liquid density: 0.512 g) / cm ³ , solid density: 0.534 g / cm ³ ) due to the difference in density, the Li metal produced at the cathode floats to the upper portion of the LiCl molten salt. Li metal floating in the upper portion of the LiCl molten salt cannot be contacted with the oxide, and thus exists as a surplus Li metal that cannot participate in the reaction. In particular, in the case of a high-capacity electrolytic reduction process system, the rate at which oxides are converted to metals (chemical reaction rate) cannot keep up with the rate of Li metal production (proportional to the applied current). Therefore, as the capacity of the electrolytic reduction process increases, there is a problem that the proportion of the excess Li metal that does not participate in the reaction increases compared to the Li metal produced in the process.

In addition, in the conventional electrolytic reduction process, the spent fuel in the form of oxide in which the pre-treatment process is completed is transferred to a reduction device while being contained in a fuel basket. After the reduction process is completed, the basket containing the oxide converted to metal is passed through a distillation process to remove the electrolyte present on the metal surface, and then taken over as a subsequent process, an electrorefining process. In this process, there is a case where the fuel basket is replaced due to a difference in specifications between the reduction device and the refining device, and a separate process device is required for this. In addition, since the electrolyte used in the electrolytic reduction process and the electrolytic refining process is different, a separate process device for removing the electrolyte remaining on the oxide surface is required when linking the reduced oxide to a subsequent process.

Japanese Patent Laid-Open No. 2008-134096 (“Reduction device for waste oxide atomic fuel and lithium regeneration electrolysis device”, published date: June 12, 2008)

The present invention can effectively use the Li metal produced in the process for the reduction reaction of the radioactive metal oxide, can solve the problem of the generation of excess Li metal generated when the capacity increases, Li ₂ O in the electrolyte accumulates as the process progresses Provided is a device and method for reducing radioactive metal oxide integrated with a regeneration device capable of solving the problem.

In addition, unlike the conventional electrolytic reduction process, a separate distillation device for removing the electrolyte is not required, and the fuel basket, which was essential in the existing process in the process of reactant injection and product discharge, is not used, so it is removed from the existing batch process. To provide a device and method for reducing the radioactive metal oxide integrated with a regeneration device capable of implementing a continuous process.

According to an embodiment of the present invention, an electrolytic device that generates a metal and a reaction gas through electrolysis of an electrolyte; A reduction device for reducing the radioactive metal oxide using the metal, and generating an electrolyte in which the first product generated during the reduction of the radioactive metal oxide is mixed; And a regeneration device for separating the first product from the electrolyte and reacting the separated first product with the reaction gas to regenerate the electrolyte.

According to another embodiment of the present invention, in an electrolytic device, a first step of generating a metal and a reaction gas through electrolysis of an electrolyte; In a reduction device, a second step of reducing a radioactive metal oxide using the metal, and generating an electrolyte in which a first product generated during reduction of the radioactive metal oxide is mixed; And a third step of separating the first product from the electrolyte and reacting the separated first product with the reaction gas to regenerate the electrolyte in the regeneration device. Reacting the filled filler and the first product mixed with the electrolyte to produce a second product, and reacting the generated second product with the reaction gas to regenerate the electrolyte, wherein the electrolyte Lithium chloride, the metal is lithium, the reaction gas is chlorine gas, the radioactive metal oxide is a metal oxide of uranium and superuranium elements, the first product is lithium oxide, and the second product is lithium-zirconium An oxide, and the filler is zirconium oxide. A method for reducing a radioactive metal oxide integrated with a regeneration device is provided.

According to one embodiment of the present invention, the efficiency of reduction of lithium and the proportion of excess Li metal that cannot participate in the reaction can be reduced by participating in effective reduction reaction of Li metal produced through electrolysis, and the rate at which oxide is converted to metal (chemical It is possible to increase the production rate of Li metal (proportional to the applied current) irrespective of the reaction rate, and it is possible to increase the efficiency of the reduction process and increase the capacity through effective mixing inside the reduction device.

In addition, according to an embodiment of the present invention, since the Li ₂ O and LiCl mixture is separated from the product (metal conversion body) by the carrier gas, unlike the conventional electrolytic reduction process, a distillation device for removing the electrolyte is provided. It is not required, and since the fuel basket, which was essential in the existing process, is not used, there is an advantage that can be realized in the continuous process by moving away from the existing batch process.

In addition, according to an embodiment of the present invention, by continuously supplying the carbon anode in the form of a cartridge, it is possible to solve the problem of reduction in the anode area due to the consumption of the anode, a disadvantage of the use of the carbon anode, high current / high voltage due to the use of the carbon anode There is an advantage that it is possible to increase the capacity and the process cost can be reduced.

1 is a conceptual diagram of a device for reducing a radioactive metal oxide integrated with a regeneration device according to an embodiment of the present invention.
2 is a view showing a dispersion plate according to an embodiment of the present invention.
3 is a flowchart illustrating a method of reducing a radioactive metal oxide integrated with a regeneration device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited only to the embodiments described below. The shape and size of elements in the drawings may be exaggerated for a more clear description, and elements indicated by the same reference numerals in the drawings are the same elements.

1 is a conceptual diagram of a reduction device 100 for a radioactive metal oxide integrated with a regeneration device according to an embodiment of the present invention.

As shown in FIG. 1, the regeneration device-integrated radioactive metal oxide reduction device 100 according to an embodiment of the present invention includes an electrolytic device 110 that generates a metal and a reaction gas through electrolysis of an electrolyte, Reduction device 120 for reducing the radioactive metal oxide using the metal generated in the electrolytic device 110, and a reduction device 120 for generating an electrolyte in which the first product generated during the reduction of the radioactive metal oxide is mixed, and the first product from the electrolyte It may be configured to include a regeneration device 130 that separates and reacts the separated first product with a reaction gas to regenerate the electrolyte.

The above-described regeneration device 130 may react with the filler filled therein and the first product mixed with the electrolyte to generate a second product, and react the generated second product with the reaction gas to regenerate the electrolyte.

In the present invention, the electrolyte is lithium chloride (LiCl), the metal is lithium (Li), the reaction gas is chlorine gas (Cl ₂ ), and the radioactive metal oxide is uranium and ultrauranium elements (for example, Plutonium, etc.), the first product is lithium oxide (Li ₂ O), the second product is lithium-zirconium oxide (Li ₂ ZrO ₃ ), and the filler may be zirconium oxide (ZrO ₂ ). have. Since the oxidized number of uranium and superuranium elements may vary, the oxidized number of metal oxides composed of these elements is not limited.

As illustrated in FIG. 1, the electrolytic device 110 may generate a metal (Li) and a reaction gas (Cl ₂ ) through electrolysis of an electrolyte (LiCl).

To this end, the electrolytic device 110 has a power supply 111 and a negative electrode terminal 112a connected to the negative electrode of the power supply 111 therein, and a negative electrode opening for collecting metal generated in the electrolysis process of the electrolyte ( 112), the positive electrode terminal 113a connected to the positive electrode of the power supply unit 111 is provided therein and the positive electrode opening 113 collecting the reaction gas generated in the electrolysis process of the electrolyte, and regeneration in the regeneration device 130 The electrolytic inflow passage 114 through which the electrolyte is introduced, the first electrolytic outflow passage 115 for supplying the reaction gas collected in the anode opening 113 to the regeneration device 130, and the cathode opening 112 The second electrolytic outflow passage 116 for supplying the metal to the reduction device 120, a plurality of through holes are generated, the dispersion plate 117 provided in the lower portion inside the electrolytic device 110, and the dispersion plate The carrier gas is transferred into the electrolytic device 110 through a plurality of through holes created in the 117. Can comprise the input valve (V1) is provided with a delivery device carrying a gas inlet passage 118 which.

Hereinafter, the operation of the above-described electrolytic device 110 will be described in detail with reference to FIG. 1.

The reaction of the following [Formula 1] by filling the electrolyte (LiCl) on the top of the dispersion plate 117 and then melting it, and then applying voltage to the cathode terminal 112a and the anode terminal 113a through the power supply 111 Can induce

[Formula 1]

2LiCl = 2Li + Cl ₂

Cathodic reaction

Lithium (Li) (liquid density: 0.512 g / cm ³ , solid density: 0.534 g / cm ³ ) produced at the cathode terminal 112a is an electrolyte of lithium chloride (LiCl) molten salt (liquid density: 1.55 g / cm ³ It may float on the upper portion of the molten salt due to a lower density than), and the electrolytic device through the second electrolytic outflow passage 116 by the high pressure carrier gas (argon) supplied from the electrolytic device carrier gas inflow passage 118 110).

The above-described carrier gas may be introduced into the reduction device 120 through the dispersion plate 117, the cathode opening 112, and the second electrolytic outflow passage 116, produced in the cathode terminal 112a in this process. Lithium (Li) and lithium chloride (LiCl) dissolved in the electrolytic device 110 may be supplied to the reduction device 120.

The cathode opening 112 serves to guide the carrier gas discharged from the dispersion plate 117 to the upper portion of the cathode terminal 112a, but in some cases, adjust the size of the cathode opening 112 to transport the carrier gas into the anode opening. It is also possible to control the ratio of the carrier gas supplied to the anode opening 112 or the cathode opening 112 and 113. As the electrolysis reaction proceeds, additional supply of lithium chloride (LiCl) may be required by consumption of lithium chloride (LiCl). For the additional supply of lithium chloride (LiCl), an electrolyte inflow passage may be installed in the electrolytic device 110.

Anode reaction

Meanwhile, chlorine gas (Cl ₂ ) generated at the anode terminal 113a may be discharged from the electrolytic device 110 through the first electrolytic outflow passage 115. The first electrolytic outflow passage 115 is connected to the regeneration device carrier gas inflow passage 134 of the regeneration device 130, so that chlorine gas (Cl ₂ ) can be used in the lithium chloride (LiCl) regeneration process of the regeneration device 130. You can.

As described above, most of the carrier gas introduced into the interior of the electrolytic device 110 through the electrolytic device carrier gas inlet passage 118 can be discharged through the second electrolytic outlet passage 116 connected to the cathode opening 112. However, through the adjustment of the size of the cathode opening 112 and the anode opening 113, it may also be discharged through the first electrolytic outlet passage 115 connected to the anode opening 113. When the carrier gas is discharged through the anode opening 113, it is possible to effectively remove chlorine gas that is likely to accumulate on the surface of the anode terminal 113a.

On the other hand, a cooling device such as a cooling fin is separately installed in the upper portion of the anode opening 113 and the first electrolytic outlet passage 115 to prevent corrosion of the device by cooling chlorine gas, which is a high-temperature corrosive gas.

The gas discharged through the first electrolytic outlet passage 115 may be stored in a separate storage, but is preferably recycled in connection with the regeneration device carrier gas inlet passage 134 of the regeneration device 130. To this end, a separate carrier gas inlet may be installed at the end of the first electrolytic outlet passage 115. Platinum, carbon, or the like may be used as a material constituting the anode terminal 113a. When the carbon anode is used, the anode is consumed as the electrolysis reaction proceeds, so additional supply of the anode may be required. To this end, it is desirable to continuously supply carbon anodes in the form of cartridges.

On the other hand, the reduction device 120 may reduce the radioactive metal oxide by using a metal, and may generate an electrolyte in which the first product generated during reduction of the radioactive metal oxide is mixed.

To this end, the reduction device 120 is generated during the reduction of the reactant inflow passage 121 through which the radioactive metal oxide is injected, the reduction inflow passage 122 through which the metal collected in the electrolytic device 110 flows, and the radioactive metal oxide. A reduction outlet flow path 123 for supplying the electrolyte in which the first product is mixed to the regeneration device 130, a plurality of through holes are generated, and a dispersion plate 117 provided at the bottom inside the electrolysis device 110 and , It may be configured to include a reducing device carrier gas inlet passage 125 equipped with a valve (V2) for introducing the carrier gas through the plurality of through-holes generated in the dispersion plate 117 into the reduction device 120. have.

Hereinafter, the operation of the reduction device 120 described above will be described with reference to FIG. 1.

The radioactive metal oxide is introduced into the reduction device 120 through the reactant inflow passage 121, and the introduced radioactive metal oxide may be filled in the upper portion of the dispersion plate 124. The oxide filled in the reduction device 120 exists as a fixed bed, but may be transferred to the fluidized bed by a carrier gas supplied for the operation of the device. In this case, a filter membrane may be installed on the upper portion of the reduction apparatus 120 to prevent the oxide from escaping from inside the reduction apparatus 120.

In addition, the size of the filled radioactive metal oxide should be larger than the diameter of the nozzle installed on the dispersion plate 124, and to prevent the oxide from randomly falling and clogging the flow path and the nozzle, a filter membrane is disposed on the top of the dispersion plate 124. Can be installed.

A fuel basket that is essentially required in an existing electrolytic reduction process is not used for the transfer of the radioactive metal oxide and the radioactive metal oxide-converted metal conversion body filled in the reduction device 120 according to an embodiment of the present invention. In addition, the transport of the reactants and products in the reduction device 120 depends on the carrier gas and gravity, but is not necessarily limited thereto, and a device for transport may be added as necessary. In this case, the linkage between the pretreatment process and the electrorefining process should be considered. Lithium chloride (LiCl) and metal (Li) discharged from the electrolytic device 110 are supplied through the reduction inflow passage 122. The mixture of lithium chloride (LiCl) and metal (Li) may be a mixture of a solid phase, a liquid phase, and a gas phase, and the mixture is reduced by a high pressure carrier gas (argon) supplied from a reducing device carrier gas inlet passage 125 120 may be introduced into the interior.

Lithium (Li) in the introduced mixture can react with radioactive metal oxides to produce metal convertors. G. Typical radioactive metal oxide of UO ₂ for example, through the _{[UO 2 + 4Li = U +} 2Li 2 O] reaction, the radioactive metal oxides are reduced, lithium (Li) can be converted to lithium oxide (Li ₂ O) have. The mixture of the converted lithium oxide (Li ₂ O) and lithium chloride (LiCl) is reduced through the reduction outlet passage 123 by the high pressure carrier gas (argon) supplied from the reduction device carrier gas inlet passage 125 ( 120) and may be supplied to the regeneration device 130.

In this way, a mixture of lithium oxide (Li ₂ O) and lithium chloride (LiCl) is separated from the metal conversion body by the carrier gas, and thus, unlike the conventional electrolytic reduction process, separate electrolyte is removed from the reduction device 120. No distillation device is required. The metal conversion body after the reduction process may be discharged to the outside through the reduction device carrier gas inlet passage 125. In order to achieve this purpose, a separate reactant recovery unit (not shown) may be installed in the reduction device 120 rather than the reduction device carrier gas inflow passage 125. Such a reduction device carrier gas inflow passage 125 or a reactant recovery part may be connected to a reactant inlet of an electrorefining process, which is a subsequent process, to implement a continuous consistent process.

Finally, the regeneration device 130 may separate the first product from the electrolyte, and react the separated first product with a reaction gas to regenerate the electrolyte.

To this end, the regeneration device 130 includes a regeneration inflow passage 131 through which the electrolyte in which the first product generated in the reduction device 120 is mixed flows, and a valve for supplying the regenerated electrolyte to the electrolysis device 110 The regeneration outlet flow path 132 provided with (V4), a plurality of through-holes are generated, and a dispersion plate 133 provided at a lower portion inside the regeneration device 130, and a plurality of penetrations generated in the dispersion plate 133 Regeneration device carrier gas inlet flow passage 134 equipped with a valve (V3) for introducing the carrier gas into the interior of the regeneration device 130 through the hole, for discharging the oxygen gas generated in the process of regenerating the electrolyte to the outside It may be configured to include a gas outlet flow path 135 is provided with a valve (V5).

Hereinafter, the operation of the playback device 130 described above will be described in detail with reference to FIG. 1.

Zirconium oxide (ZrO ₂ ) may be filled in the upper portion of the dispersion plate 133 inside the regeneration device 130, and lithium chloride (LiCl) and lithium oxide discharged from the reduction device 120 through the regeneration inflow passage 131 A mixture of (Li ₂ O) can be supplied. The mixture of lithium chloride (LiCl) and lithium oxide (Li ₂ O) may be a mixture of a solid phase, a liquid phase, and a gas phase. It can be introduced into the playback device 130 by.

The zirconium oxide (ZrO ₂ ) filled in the regeneration device 130 exists as a fixed bed, but can be transferred to the fluidized bed by a carrier gas supplied for the operation of the device. In this case, in order to prevent the zirconium oxide (ZrO ₂ ) from separating from the inside of the regeneration device 130, a filtration membrane may be installed on the top of the regeneration device 130.

Lithium oxide (Li ₂ O) separation process

Lithium oxide (Li ₂ O) introduced into the interior of the regeneration device 130 is zirconium oxide (ZrO ₂ ) filled in the interior of the regeneration device 130 by the reaction of [Li ₂ O + ZrO ₂ = Li ₂ ZrO ₃ ] It can react with to produce lithium-zirconium oxide (Li ₂ ZrO ₃ ). Meanwhile, lithium chloride (LiCl) may be discharged from the regeneration device 130 through the regeneration outlet flow path 132 and supplied to the electrolytic device 110. For the supply of lithium chloride (LiCl) to the electrolytic device 110, a high-pressure carrier gas (argon) supplied from the electrolytic device carrier gas inflow passage 118 of the electrolytic device 110 is required, and achieves this purpose The position of the electrolytic device carrier gas inlet passage 118 for the purpose is not limited to the position shown in FIG. 1.

Regeneration process of lithium chloride (LiCl)

When the separation process of lithium oxide (Li ₂ O) suggested above is completed, a regeneration process of lithium chloride (LiCl) is performed. Chlorine gas (Cl ₂ ) may be introduced into the interior of the regeneration device 130 through the regeneration device transport gas inflow channel 134. As described above, the chlorine gas (Cl) generated in the electrolysis device 110 is connected to the regeneration device transport gas inlet flow passage 134 of the regeneration device 130 and the first electrolysis outflow passage 115 of the electrolysis device 110. ₂ ) can be used in the playback device 130.

The introduced chlorine gas (Cl ₂ ) reacts with lithium-zirconium oxide (Li ₂ ZrO ₃ ) derived from zirconium oxide (ZrO ₂ ) filled in the regeneration device 130, [Li ₂ ZrO ₃ + Cl ₂ = ZrO ₂ + 2LiCl + 1 / 2O ₂ ] can produce zirconium oxide (ZrO ₂ ), lithium chloride (LiCl), and oxygen gas (O ₂ ). Here, the regenerated zirconium oxide (ZrO ₂ ) remains filled in the regeneration device 130, and oxygen gas (O ₂ ) may be discharged to the outside through the gas outlet flow path 135. Then, the regenerated lithium chloride (LiCl) is discharged from the regeneration device 130 through the regeneration outflow passage 132 by a high-pressure carrier gas (argon) supplied from the regeneration device carrier gas inflow passage 134 and the electrolytic device ( 110).

On the other hand, Figure 2 is a view showing a dispersion plate according to an embodiment of the present invention.

Dispersion plates 117, 124, and 133 applied to the electrolytic device 110, the reduction device 120, and the regeneration device 130, as shown in FIG. 2, a plate in which a plurality of through holes H are generated It may be shaped. It should be noted that the shapes of the above-described dispersion plates 117, 124, and 133 are for understanding the present invention, and are not limited to the above-described shapes.

On the other hand, although the detailed description is omitted in the above description, it is possible to install a heater or the like in order to maintain an appropriate process temperature at the proper place for loading, such as the electrolytic device 110, the reduction device 120, the regeneration device 130, and the flow path. It will be apparent to those skilled in the art.

As described above, according to one embodiment of the present invention, the Li metal produced in the process can be effectively used for the reduction reaction of the oxide, and can solve the problem of generating excess Li metal generated when the capacity is increased, and the process proceeds. Therefore, there is an advantage that can solve the problem of the accumulation of Li ₂ O in the electrolyte. In addition, Li ₂ O is removed from the regenerated electrolyte and reused in the process, and Li ₂ O also has the advantage of being regenerated and used as an electrolyte.

As the process presented in one embodiment of the present invention progresses, the mixture of Li ₂ O and LiCl is separated from the product (metal convertor) by the carrier gas, and thus, unlike the conventional electrolytic reduction process, in the present invention, There is no need for a distillation device for removing the electrolyte, and since the fuel basket, which was essential in the existing process in the course of reactant injection and product discharge, is not used, it is possible to escape from the existing batch process and realize a continuous process.

Meanwhile, FIG. 3 is a flowchart illustrating a method of reducing a radioactive metal oxide integral with a regeneration device according to an embodiment of the present invention.

Hereinafter, a method of reducing a radioactive metal oxide integrated with a regeneration device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. However, for the sake of simplicity of the invention, a description overlapping with the items described in FIGS. 1 to 2 is omitted.

1 to 3, the electrolytic device 110 may generate a metal and a reaction gas through electrolysis of an electrolyte (S301).

Next, the reduction device 120 reduces the radioactive metal oxide by using the metal generated in the electrolytic device 110, and may generate an electrolyte in which the first product generated during reduction of the radioactive metal oxide is mixed (S302). .

Next, in the regeneration device 130, the first product is separated from the electrolyte, and the separated first product and the reaction gas are reacted to regenerate the electrolyte (S303).

On the other hand, the above-described step S303, the step of generating a second product by reacting the first product mixed in the filler and the electrolyte filled therein, and reacting the generated second product and the reaction gas to regenerate the electrolyte It may include.

In the present invention, the electrolyte is lithium chloride, the metal is lithium, the reaction gas is chlorine gas, and the radioactive metal oxide is a metal oxide of uranium and total uranium elements (for example, plutonium, etc.), the agent 1 product is lithium oxide, the second product is lithium-zirconium oxide, and the filler may be zirconium oxide as described above.

As described above, according to one embodiment of the present invention, the Li metal produced in the process can be effectively used for the reduction reaction of the oxide, and can solve the problem of generating excess Li metal generated when the capacity is increased, and the process proceeds. Therefore, there is an advantage that can solve the problem of the accumulation of Li ₂ O in the electrolyte. In addition, Li ₂ O is removed from the regenerated electrolyte and reused in the process, and Li ₂ O also has the advantage of being regenerated and used as an electrolyte.

As the process presented in one embodiment of the present invention progresses, the mixture of Li ₂ O and LiCl is separated from the product (metal convertor) by the carrier gas, and thus, unlike the conventional electrolytic reduction process, in the present invention, There is no need for a distillation device for removing the electrolyte, and since the fuel basket, which was essential in the existing process in the course of reactant injection and product discharge, is not used, it is possible to escape from the existing batch process and realize a continuous process.

The present invention is not limited by the above-described embodiment and the accompanying drawings. It is intended to limit the scope of rights by the appended claims, and that various forms of substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention as set forth in the claims to those skilled in the art. It will be self-evident.

100: metal oxide reduction device
110: electrolytic device
111: power supply
112: cathode opening
112a: negative terminal
113: anode opening
113a: positive terminal
114: electrolytic inflow passage
115: first electrolytic outflow passage
116: second electrolytic outflow passage
117, 124, 133: scatter plate
118: electrolytic device carrier gas inlet flow path
120: reduction device
121: reactant inlet flow path
122: reduction inflow channel
123: reduced outflow channel
125: reduction device carrier gas inlet flow path
130: playback device
131: regeneration inflow channel
132: Regeneration spill euro
134: regeneration device carrier gas inlet flow path
135: gas outflow passage
V1 to V5: valve
H: Through hole

Claims (10)

An electrolytic device that generates a metal and a reaction gas through electrolysis of the electrolyte;
A reduction device for reducing the radioactive metal oxide using the metal, and generating an electrolyte in which the first product generated during the reduction of the radioactive metal oxide is mixed; And
A regeneration device for separating the first product from the electrolyte and reacting the separated first product with the reaction gas to regenerate the electrolyte;
Reduction device of a radioactive metal oxide integrated with a regeneration device comprising a.
According to claim 1,
The playback device,
Regeneration device-integrated radioactive metal oxide is produced by reacting a filler filled therein with a first product mixed with the electrolyte to produce a second product, and reacting the generated second product with the reaction gas to regenerate the electrolyte. Reduction device.
According to claim 2,
The electrolyte is lithium chloride,
The metal is lithium,
The reaction gas is chlorine gas,
The radioactive metal oxide is a metal oxide of uranium and ultrauranium elements,
The first product is lithium oxide,
The second product is lithium-zirconium oxide,
The filling material is zirconium oxide, a reduction device for a radioactive metal oxide integrated with a regeneration device.
According to claim 2,
The electrolyte regenerated in the regeneration device is supplied to the electrolysis device,
The reaction gas generated in the electrolysis device is supplied to the regeneration device, and the metal generated in the electrolysis device is supplied to the reduction device,
The electrolyte in which the first product produced in the reduction device is mixed is supplied to the regeneration device, wherein the regeneration device is a radioactive metal oxide reduction device.
According to claim 4,
The playback device,
A regeneration inflow passage through which the electrolyte in which the first product generated in the reduction device is mixed is introduced;
A regeneration outlet flow path for supplying the regenerated electrolyte to the electrolytic device;
A plurality of through-holes are generated, the dispersion plate provided in the lower portion inside the playback device;
A regeneration device carrier gas inflow passage through which a carrier gas is introduced into the regeneration device through a plurality of through holes created in the dispersion plate; And
A gas outlet flow path for discharging oxygen gas generated in the process of regenerating the electrolyte to the outside;
Reduction device of a radioactive metal oxide integrated with a regeneration device comprising a.
The method of claim 5,
On the inside of the playback device,
A filtering device for preventing the separation of the first product is further provided, and a reduction device for a radioactive metal oxide integrated with a regeneration device.
According to claim 4,
The electrolytic device,
Power supply;
A negative electrode opening provided inside the negative electrode terminal connected to the negative electrode of the power supply and collecting the metal generated in the electrolysis process of the electrolyte;
An anode opening provided inside the anode terminal connected to the anode of the power supply and collecting the reaction gas generated in the electrolysis process of the electrolyte;
An electrolyte inflow channel through which the regenerated electrolyte is introduced in the regeneration device;
A first electrolytic outflow passage for supplying the collected reactant gas to the regeneration device;
A second electrolytic outflow passage for supplying the collected metal to the reduction device;
A plurality of through-holes are generated, the dispersion plate provided at the bottom inside the electrolytic device; And
An electrolytic device carrier gas inflow channel for introducing carrier gas into the electrolytic device through a plurality of through holes created in the dispersion plate;
Reduction device of a radioactive metal oxide integrated with a regeneration device comprising a.
According to claim 4,
The reduction device,
A reactant inflow channel through which the radioactive metal oxide is injected;
A reduction inflow channel through which the metal collected in the electrolytic device flows;
A reduction outlet passage for supplying the electrolyte in which the first product produced during reduction of the radioactive metal oxide is mixed to the regeneration device; And
A plurality of through-holes are generated, the dispersion plate provided at the bottom inside the electrolytic device; And
A reducing device carrier gas inflow channel for introducing a carrier gas into the reduction device through a plurality of through holes created in the dispersion plate;
Reduction device of a radioactive metal oxide integrated with a regeneration device comprising a.
The method of claim 8,
On the inside of the reduction device,
A filter for preventing the release of the radioactive metal oxide is further provided, a regeneration device integrated radioactive metal oxide reduction device.
In the electrolytic device, a first step of generating a metal and a reaction gas through electrolysis of the electrolyte;
In a reduction device, a second step of reducing the radioactive metal oxide using the metal, and generating an electrolyte in which the first product generated during reduction of the radioactive metal oxide is mixed; And
A third step of separating the first product from the electrolyte and reacting the separated first product with the reaction gas to regenerate the electrolyte;
Including, the third step,
Reacting the filler filled therein and a first product mixed with the electrolyte to produce a second product, and reacting the generated second product with the reaction gas to regenerate the electrolyte,
The electrolyte is lithium chloride, the metal is lithium, the reaction gas is chlorine gas, the radioactive metal oxide is a metal oxide of uranium and ultrauranium elements, the first product is lithium oxide, and the second product is It is a lithium-zirconium oxide, and the filler is zirconium oxide, a method for reducing a radioactive metal oxide integrated with a regeneration device.

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