Fused salt purification apparatus and method for removing impurity components from a chloride fused salt

Abstract

Embodiments of the present application relate to the field of separation by physical or chemical methods, and particularly to a molten salt purification device and a method for removing impurity components from a chloride molten salt. The molten salt purification device comprises a container holding assembly, a purification furnace body, an oxygen supply assembly, a tail gas exhaust, and a purification moving assembly. The container holding assembly is used to hold a plurality of molten salt containers; the purification furnace body forms a reaction space and a tail gas exhaust passage; the oxygen supply assembly is used to supply oxygen to the molten salt containers to remove lanthanide chlorides in the chloride molten salt; the tail gas exhaust is used to exhaust the chlorine gas entering the tail gas exhaust passage to the outside; and the purification moving assembly is arranged to be capable of supporting and positioning the container holding assembly and moving the container holding assembly in the reaction space, so that the oxygen supply assembly can supply oxygen to the molten salt containers. The molten salt purification device provided by the embodiments of the present application is beneficial to improve the purification efficiency of the chloride molten salt.

Description

Technical Field

[0001] Embodiments of this application relate to the field of separation using physical or chemical methods, specifically to a molten salt purification apparatus and a method for removing impurity components from chloride molten salt. Background Technology

[0002] The statements herein are provided merely as background information in connection with this application and do not necessarily constitute prior art.

[0003] In some cases, to obtain metallic materials, it is necessary to process the corresponding metallic compounds. For example, the corresponding metallic materials can be obtained by electrolytic reduction of the metallic compounds in an electrolytic device.

[0004] In the preparation of corresponding metallic materials using electrolysis, used chloride molten salts can be treated for reuse to save costs. Currently, the technology for treating chloride molten salts for reuse still has many limitations. Summary of the Invention

[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] To address the aforementioned problems, embodiments of this application provide a molten salt purification device and a method for removing impurity components from chloride molten salt.

[0007] In a first aspect, embodiments of this application provide a molten salt purification device for removing impurity components from chloride molten salt, the impurity components including lanthanide chlorides, strontium chloride, and cesium chloride.

[0008] The molten salt purification equipment includes a container holding assembly, a purification furnace body, an oxygen supply assembly, a tail gas discharge assembly, and a purification moving assembly. The container holding assembly holds multiple molten salt containers, in which chloride molten salt is contained. The purification furnace body is configured to form a reaction space for housing the container holding assembly and a tail gas discharge channel communicating with the reaction space; the purification furnace body is also configured to regulate the temperature of the reaction space. The oxygen supply assembly supplies oxygen to the molten salt containers to react with lanthanide chlorides in the chloride molten salt within the containers, forming lanthanide oxide precipitates and chlorine gas. The tail gas discharge assembly communicates with the tail gas discharge channel to discharge chlorine gas entering the tail gas discharge channel to the outside. The purification moving assembly is configured to provide support and positioning for the container holding assembly and to move the container holding assembly within the reaction space, enabling the oxygen supply assembly to supply oxygen to the molten salt containers.

[0009] The molten salt purification equipment provided in this application uses a container holding assembly to hold multiple molten salt containers, thereby enabling the simultaneous purification of more chloride molten salts and improving the purification efficiency. An oxygen supply assembly introduces oxygen into the chloride molten salt, allowing the oxygen to react with lanthanide chlorides and remove them from the molten salt. The generated chlorine gas can be discharged from the reaction space through a tail gas exhaust assembly and a tail gas exhaust channel, reducing the residence time of chlorine gas in the reaction space. This promotes a more complete reaction between lanthanide chlorides and oxygen, improving purification efficiency, and also reduces the corrosion of structural components within the reaction space by chlorine gas. The inclusion of a purification moving assembly facilitates alignment between the oxygen supply assembly and the container holding assembly, ensuring smooth oxygen supply to the molten salt containers and further improving purification efficiency.

[0010] Secondly, embodiments of this application provide a method for removing impurity components from chloride molten salt, which is implemented using the purification equipment provided in the embodiments of the first aspect of this application. The impurity components include lanthanide chlorides, strontium chloride, and cesium chloride.

[0011] The method includes the following steps: S10, injecting molten chloride salt into a molten salt container and placing the molten salt container into a first reaction subspace; S20, heating the first reaction subspace and supplying oxygen to the molten salt container so that the lanthanide chlorides in the molten chloride salt react with oxygen to form a precipitate and chlorine gas; S30, then heating the second reaction subspace so that the temperature of the second reaction subspace is higher than the melting point of the molten chloride salt; S40, moving the molten salt container from the first reaction subspace to the second reaction subspace and cooling the first reaction subspace so that the temperature of the first reaction subspace is lower than the melting point of the molten chloride salt; S50, slowly moving the molten salt container from the second reaction subspace to the first reaction subspace so that the molten chloride salt entering the first reaction subspace in the molten salt container gradually solidifies, so that strontium chloride and cesium chloride can be enriched in the molten chloride salt located in the second reaction subspace and finally separate from the molten chloride salt and solidify.

[0012] The method provided in the embodiments of this application involves placing molten salt into the first reaction space of a molten salt purification device. After heating the first reaction space and introducing oxygen into the molten salt to form lanthanide oxide precipitates from lanthanide chlorides, the molten salt container can be transferred to the second reaction space without removing the lanthanide oxide precipitates from the chloride molten salt. After cooling the first reaction space, the removal of strontium chloride and cesium chloride is achieved by moving the molten salt container from the second reaction space to the first reaction space. Therefore, the molten salt purification device provided in the embodiments of this application can remove lanthanide chlorides, strontium chloride, and strontium chloride impurities from chloride molten salt using only one device. This simplifies the removal of impurities from chloride molten salt, reduces purification time, and improves the efficiency of purifying chloride molten salt. Attached Figure Description

[0013] Other objects and advantages of this application will become apparent from the following description of embodiments of this application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of this application.

[0014] Figure 1 This is a cross-sectional schematic diagram of the molten salt purification equipment provided in the embodiments of this application.

[0015] Figure 2 yes Figure 1 A magnified view of a portion of the molten salt purification equipment near the oxygen supply components.

[0016] Figure 3 yes Figure 1 A magnified view of a portion of the molten salt purification device near the sealing guide assembly.

[0017] Figure 4 yes Figure 1The diagram shows the structure of the molten salt purification furnace body when the top opening of the furnace body is opened.

[0018] Figure 5 yes Figure 1 The image shows a magnified view of a portion of the molten salt purification equipment near the oxygen supply lifting drive.

[0019] Figure 6 yes Figure 1 A partially enlarged view of the oxygen supply pipes of the molten salt purification equipment is shown.

[0020] Figure 7 yes Figure 1 The diagram shows the structure of the purification furnace body of the molten salt purification equipment.

[0021] Figure 8 yes Figure 1 The diagram shows the structure of the container holding assembly of the molten salt purification device after it is assembled with multiple molten salt containers.

[0022] Figure 9 yes Figure 1 A partial enlarged view of the chloride molten salt feed device of the molten salt purification equipment near the rotary conveyor assembly.

[0023] Figure 10 yes Figure 8 The diagram shows the structure of the retaining component when it is engaged with the support positioning part.

[0024] Figure 11 yes Figure 10 The structure shown is a magnified view from another angle.

[0025] Figure 12 yes Figure 1 A partially enlarged view of the moving purification component of the molten salt purification device is shown.

[0026] Figure 13 yes Figure 12 The diagram shows a cross-sectional view of the structure.

[0027] Figure 14 yes Figure 1 The image shows a magnified view of the molten salt purification equipment near the furnace cover movement mechanism.

[0028] Figure 15 yes Figure 14 The diagram shows the structure of the furnace cover movement mechanism.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Molten salt purification equipment;

[0031] 1. Molten salt container;

[0032] 2. Oxygen supply assembly; 21. Oxygen supply fittings; 210. Vent; 22. Oxygen supply lifting drive; 221. Vertical extension; 222. Oxygen supply mounting; 2221. Vertical mounting; 2222. Horizontal mounting; 223. Drive; 23. Flow control.

[0033] 3. Purification furnace body; 30. Reaction space; 301. First reaction subspace; 302. Second reaction subspace; 303. Top opening;

[0034] 3. Purification furnace body; 30. Reaction space; 301. First reaction subspace; 302. Second reaction subspace; 303. Top opening;

[0035] 311. First purification furnace section; 312. Second purification furnace section; 32. Purification furnace cover; 36. Purification furnace base;

[0036] 3001, First airway; 3002, Second airway; 3003, Airflow channel; 3601, Lifting and lowering channel;

[0037] 321. First cover; 3201. Oxygen fitting through hole; 3202. Receiving cavity; 3203. Cover lifting component; 361. Second cover; 360. Exhaust gas discharge through hole; 3610. Moving fitting through hole; 3111. First cylinder; 3121. Second cylinder;

[0038] 3115. First mounting component; 3116. First splicing mating component; 31161. First positioning hole; 3125. Second mounting component; 3126. Second splicing mating component; 31261. Second positioning component; 3127. Third splicing mating component; 363. Fourth splicing mating component;

[0039] 322, First insulation cover; 362, Second insulation cover; 3620, Movable through hole; 3621, Groove; 3112, First side insulation component; 3122, Second side insulation component; 3124, Space isolation insulation component; 31240, Isolation channel;

[0040] 3113, First heating element; 3123, Second heating element;

[0041] 3114. Cooling components;

[0042] 33. Temperature measuring element in the first space; 34. Temperature measuring element in the second space; 35. Temperature measuring element in the channel;

[0043] 4. Exhaust gas discharge components;

[0044] 5. Sealing guide assembly; 51. Resilient seal; 511. Sealing ring; 5111. Sealing body; 5112. First extension; 51120. Annular groove; 5113. Second extension; 52. Sealing mount; 521. Channel; 522. Sealing groove; 523. Lubrication groove; 53. Lubricating element;

[0045] 6. Purification moving component; 61. Support and positioning part; 611. Support body; 6110. Support and positioning component; 612. Support column; 62. Moving insulation component; 63. Purification moving component; 601. Insulated space; 64. Moving rod; 65. Dynamic sealing structure;

[0046] 7. Chloride molten salt feeding device; 71. Molten salt receiving container; 711. Container body; 712. Discharge part; 713. Control valve; 72. Molten salt suction part; 73. Container holding assembly; 731. Holding part; 7310. Holding hole; 732. Support part; 7320. Positioning fitting part; 733. Holding connection part; 734. Lifting fitting part; 74. Rotary transport assembly; 741. Support fitting part; 7410. Support fitting positioning part; 7411. Support fitting body; 742. Rotating part; 743. Moving part; 744. Fitting part; 745. Moving drive part; 746. Rotating drive part; 75. Support frame;

[0047] 8. Furnace cover moving mechanism; 81. Moving part; 810. First mating groove; 811. Second mating groove; 812. Guide mating part;

[0048] 82. Motion drive assembly; 821. Rotation drive unit; 8211. Motor; 8212. Reducer; 822. Rotating part; 823. Threaded mating part; 8231. Mating body; 8232. Mounting part; 824. Fastener;

[0049] 83. Motion-fitting part; 831. Guide cylinder; 8310. Guide part; 83101. Vertical extension section; 83102. Inclined extension section; 832. Guide connection part;

[0050] 84. Drive connector; 841. First mounting component; 842. Second mounting component; 843. Reinforcing component;

[0051] 85. Motion connector; 851. Connecting cylinder; 852. Connector; 86. Lifting component; 87. Fixing bolt; 88. Bolt;

[0052] 9. Support platform; 90. Lifting channel.

[0053] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0054] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0055] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0056] When preparing metallic uranium using molten chloride as an electrolyte via electrolysis, the molten chloride contains impurities such as lanthanide chlorides, strontium chloride, and cesium chloride. Before reuse, the molten chloride needs to be purified to remove these impurities. Currently, the purification efficiency of molten chloride is low.

[0057] To address the aforementioned problems, embodiments of this application provide a molten salt purification device and a method for removing impurity components from chloride molten salt.

[0058] See Figure 1 and Figure 2 , Figure 1 This is a cross-sectional schematic diagram of the molten salt purification device 100 provided in an embodiment of this application. Figure 2 yes Figure 1 The diagram shows a partial enlarged view of the molten salt purification device 100 near the oxygen supply component 2. Embodiments of this application provide a molten salt purification device 100 for removing impurity components from chloride molten salt, including lanthanide chlorides, strontium chloride, and cesium chloride. The molten salt purification device 100 may include a containment holding component 73, a purification furnace body 3, an oxygen supply component 2, a tail gas discharge component 4, and a purification moving component 6.

[0059] A container holding assembly 73 is used to hold multiple molten salt containers 1; chloride molten salt is contained in the molten salt containers 1. The purification furnace body 3 is configured to form a reaction space 30 for accommodating the container holding assembly 73 and a tail gas exhaust channel communicating with the reaction space 30, and the purification furnace body 3 is configured to regulate the temperature of the reaction space 30; an oxygen supply assembly 2 is used to supply oxygen to the molten salt containers 1 to react with at least a portion of the impurity components in the chloride molten salt in the molten salt containers 1 to form lanthanide oxide precipitates and chlorine gas; a tail gas exhaust assembly 4 is connected to the tail gas exhaust channel and is used to discharge the chlorine gas entering the tail gas exhaust channel to the outside; a purification moving assembly 6 is configured to provide support and positioning for the container holding assembly 73 and to move the container holding assembly 73 within the reaction space 30 so that the oxygen supply assembly 2 can supply oxygen to the molten salt containers 1.

[0060] The molten salt purification equipment 100 provided in the embodiments of this application holds multiple molten salt containers 1 through the container holding assembly 73, thereby enabling the simultaneous purification of more chloride molten salts and improving the purification efficiency of chloride molten salts. Oxygen is introduced into the chloride molten salt through the oxygen supply assembly 2, so that the lanthanide chlorides are removed from the chloride molten salt by reacting with the oxygen. The chlorine gas generated by the reaction can be discharged from the reaction space through the tail gas discharge assembly 4 and the tail gas discharge channel, which helps to reduce the residence time of chlorine gas in the reaction space 30. This is beneficial to the full reaction of lanthanide chlorides with oxygen to improve the purification efficiency, and also helps to reduce the corrosion of the structural components in the reaction space 30 by chlorine gas. By setting the purification moving assembly 6, it is beneficial to align the oxygen supply assembly 2 with the container holding assembly 73, thereby smoothly supplying oxygen to the molten salt containers 1 and improving the purification efficiency.

[0061] In some embodiments, the chloride molten salt may be lithium chloride and potassium chloride, and the impurity components in the chloride molten salt may include lanthanide chlorides, strontium chloride, and cesium chloride. The molten salt container 1 is, for example, a tubular ceramic crucible.

[0062] The material of the housing retaining assembly 73 is, for example, 310s, so that the housing retaining assembly 73 has good high temperature resistance and molten salt corrosion resistance.

[0063] See Figure 1 and Figure 7 , Figure 7 yes Figure 1The schematic diagram of the purification furnace body 3 of the molten salt purification device 100 shown illustrates that, in some embodiments, the purification furnace body 3 may include a purification shell, a heat insulation component, and a heating component. The heat insulation component is disposed within the purification shell, forming a reaction space 30; the heating component is used to heat the reaction space 30; wherein, a tail gas discharge channel is formed between the purification shell and the heat insulation component, located radially outside the heat insulation component. In such embodiments, heating the reaction space 30 by the heating component regulates the temperature of the reaction space 30; heat insulation of the reaction space 30 by the heat insulation component helps ensure that the reaction space 30 reaches a preset temperature; since the heat insulation component forms the reaction space 30 and the tail gas discharge channel is formed radially outside the heat insulation component, the tail gas discharge channel and the reaction space 30 are isolated from each other, which helps prevent chlorine gas entering the tail gas discharge channel from returning to the reaction space 30.

[0064] See Figure 7 In some embodiments, the purification housing may include a first cover 321 and a second cover 361 disposed opposite to each other, and a lateral cylindrical member connecting the first cover 321 and the second cover 361; wherein, the first cover 321 is provided with an oxygen-fitting through hole 3201 for allowing the oxygen supply component 2 to enter the reaction space 30; the second cover 361 is provided with a moving-fitting through hole 3610 for allowing the purification moving component 6 to enter the reaction space 30 and an exhaust gas discharge through hole 360 ​​for connecting the exhaust gas discharge channel and the exhaust gas discharge component 4. In this embodiment, the oxygen supply component 2 can be located on the side where the first cover 321 is located, which facilitates the oxygen supply component 2 to supply oxygen to the molten salt container 1 located in the reaction space 30, so as to remove lanthanide chlorides in the chloride molten salt in the reaction space 30. The purification moving component 6 can be located on the side where the second cover 361 is located, which can avoid interference between the purification moving component 6 and the oxygen supply component 2, and enable the purification moving component 6 to move the molten salt container 1 in the reaction space 30, so that each molten salt container 1 and the oxygen supply component 2 can cooperate, thereby facilitating the oxygen supply component 2 to supply oxygen to the molten salt container 1. Since the tail gas discharge hole 360 ​​is also located on the second cover 361, after chlorine enters the tail gas discharge channel, it flows out from the tail gas discharge hole 360 ​​to the tail gas discharge component 4, and will not flow into the moving cooperation hole 3610, which would have an adverse effect on the structure there.

[0065] In some embodiments, see [link to relevant documentation] Figure 7 The molten salt purification device 100 may also include a dynamic sealing structure 65 to form a dynamic seal between the purification moving component 6 and the moving engagement through hole 3610 of the second cover 361.

[0066] See Figure 7In some embodiments, the thermal insulation component may include a first thermal insulation cover 322, a second thermal insulation cover 362 disposed opposite to each other, and a lateral thermal insulation component disposed between the first thermal insulation cover 322 and the second thermal insulation cover 362. The first thermal insulation cover 322 is disposed on a first cover 321, and the lateral thermal insulation component is disposed on a lateral cylinder. An airflow channel 3003 is provided between the first thermal insulation cover 322 and the lateral thermal insulation component, and the reaction space 30 is connected to the exhaust gas discharge channel only through the airflow channel 3003.

[0067] In this embodiment, the first heat-insulating cover 322, the second heat-insulating cover 362, and the lateral heat-insulating component together form the reaction space 30. Since the airflow channel 3003 is formed between the first heat-insulating cover 322 and the lateral heat-insulating component, the airflow channel 3003 is kept as far away from the movable mating through hole 3610 as possible, which is conducive to the chlorine gas leaving the reaction space 30 as soon as possible and reduces the impact on the purification moving component 6 in the reaction space 30 and the dynamic sealing structure 65 at the movable mating through hole 3610.

[0068] Furthermore, in such an embodiment, the exhaust gas discharge channel and the reaction space 30 can be separated by a lateral insulation member and a second insulation cover 362 to prevent chlorine gas in the exhaust gas discharge channel from corroding the purification moving component 6 and the dynamic sealing structure 65.

[0069] In some embodiments, the molten salt purification device 100 may further include a suction element for providing suction force to the exhaust gas outlet 4, so as to rapidly discharge chlorine gas from the reaction space 30. In such an embodiment, the rapid extraction of chlorine gas by the suction element accelerates the departure of chlorine gas from the reaction space 30, enhances the reaction between lanthanide chlorides and oxygen, and further prevents chlorine gas flowing out of the molten salt container 1 from corroding the purification moving assembly 6 and the dynamic sealing structure 65. The suction element is, for example, a vacuum pump.

[0070] In some embodiments, a vacuum can be created in the reaction space 30 using a suction device and an exhaust gas vent 4. In such an embodiment, the reaction space 30 is evacuated using the exhaust gas vent 4 before heating to prevent air in the reaction space 30 from affecting the removal of impurities.

[0071] In some embodiments, the lateral cylinder may include a first cylinder 3111 and a second cylinder 3121 detachably connected to the first cylinder 3111; the first cylinder 3111 is detachably connected to the first cover 321, and the second cylinder 3121 is detachably connected to the second cover 361.

[0072] In some embodiments, the lateral insulation member may include a first side insulation member 3112, a second side insulation member 3122, and a space isolation insulation member 3124 disposed between the first side insulation member 3112 and the second side insulation member 3122. The first side insulation member 3112 is disposed on the first cylindrical member 3111, and the second side insulation member 3122 and the space isolation insulation member 3124 are disposed on the second cylindrical member 3121.

[0073] An airflow channel 3003 is formed between the first side insulation component 3112 and the first insulation cover component 322; the second side insulation component 3122 is spliced ​​with the second insulation cover component 362; the space isolation insulation component 3124 is spliced ​​with the first side insulation component 3112 and the second side insulation component 3122 to divide the reaction space 30 into a first reaction subspace 301 and a second reaction subspace 302; the space isolation insulation component 3124 forms an isolation channel 31240 so that the purification moving component 6 can drive the containment holding component 73 to move between the first reaction subspace 301 and the second reaction subspace 302.

[0074] In this embodiment, since the first cylinder 3111, the second cylinder 3121, the first cover 321, and the second cover 361 are detachably connected, and the first side insulation component 3112 is disposed on the first cylinder 3111, the second side insulation component 3122 and the space isolation insulation component 3124 are disposed on the second cylinder 3121, the first insulation cover 322 is disposed on the first cover 321, and the second insulation cover 362 is disposed on the second cover 322, the entire purification furnace body 3 can be disassembled and assembled for maintenance or reassembly. An airflow channel 3003 is formed between the first side insulation component 3112 and the first insulation cover component 322, allowing the first insulation cover component 322 and the first side insulation component 3112 to form an airflow channel 3003 on the side of the first side insulation component 3112 away from the second side insulation component 3122. This further prevents chlorine gas flowing out of the molten salt container 1 from corroding the purification moving component 6 and the dynamic sealing structure 65, making it difficult to separate the purification moving component 6 from the molten salt container 1 or damaging the sealing of the reaction space 30, thus affecting the purification efficiency. The space isolation insulation component 3124 is spliced ​​and matched with the first side insulation component 3112 and the second side insulation component 3122 to improve the insulation effect. A space-isolating insulation component 3124 is disposed between the first side insulation component 3112 and the second side insulation component 3122, which can reduce heat transfer between the first reaction subspace 301 and the second reaction subspace 302 and improve the heating efficiency of the first reaction subspace 301 and the second reaction subspace 302. The space-isolating insulation component 3124 forms an isolation channel 31240 connecting the first reaction subspace 301 and the second reaction subspace 302, so that the purification moving component 6 can drive the molten salt container 1 to move between the first reaction subspace 301 and the second reaction subspace 302 through the isolation channel 31240.

[0075] In some embodiments, the thickness of the space isolation insulation member 3124 can be 70 mm to minimize heat transfer between the first reaction subspace 301 and the second reaction subspace 302.

[0076] In some embodiments, the inner diameter of the isolation channel 31240 is smaller than the inner diameter of the first reaction subspace 301 and the second reaction subspace 302, so as to reduce the heat transfer between the first reaction subspace 301 and the second reaction subspace 302 through the isolation channel 31240.

[0077] See Figure 7In some embodiments, the first heat-insulating cover 322 is disposed inside the first cover 321 and installed on the first cover 321. In such embodiments, the first heat-insulating cover 322 and the first side heat-insulating member 3112 form a first reaction subspace 301, and the two can also insulate the formed first reaction subspace 301 to reduce the heat loss from the first reaction subspace 301 to the outside, thereby helping to ensure that the first reaction subspace 301 can reach the preset temperature.

[0078] See Figure 7 In some embodiments, the first cover 321 forms a receiving cavity 3202 on the side facing the first cylinder 3111, and the first heat-insulating cover 322 is disposed in the receiving cavity 3202. The first heat-insulating cover 322 is connected to the first cover 321 so that there is an airflow channel 3003 between it and the first side heat-insulating member 3112.

[0079] See Figure 7 In some embodiments, the second heat-insulating cover 362 is disposed inside the second cover 361 and installed on the second cover 361. In such embodiments, the second heat-insulating cover 362 and the second side heat-insulating member 3122 form a second reaction subspace 302, and the two can also insulate the formed second reaction subspace 302 to reduce the heat loss from the second reaction subspace 302 to the outside, thereby helping to ensure that the second reaction subspace 302 can reach the preset temperature.

[0080] The space isolation insulation component 3124 is installed on the second cylinder 3121 and contacts the first side insulation component 3112 and the second side insulation component 3122, so that the space isolation insulation component 3124 can be disposed between the first side insulation component 3112 and the second side insulation component 3122, so that the space isolation insulation component 3124 can reduce the heat transfer between the first reaction subspace 301 and the second reaction subspace 302.

[0081] In some embodiments, the purification furnace body 3 may further include a first mounting member 3115, which is spaced apart from and connected to the first cylindrical member 3111. A first side insulation member 3112 is mounted on the first mounting member 3115 radially inside the first mounting member 3115, and a first air passage 3001 is formed between the first mounting member 3115 and the first cylindrical member 3111. By providing the first mounting member 3115, the stability of the installation of the first side insulation member 3112 can be improved.

[0082] In some embodiments, the purification furnace body 3 may further include a second mounting member 3125, which is spaced apart from and connected to the second cylindrical member 3121. A second side insulation member 3122 is mounted on the second mounting member 3125 radially inside the second mounting member 3125, and a second air passage 3002 is formed between the second mounting member 3125 and the second cylindrical member 3121. By providing the second mounting member 3125, the stability of the installation of the second side insulation member 3122 can be improved.

[0083] See Figure 7 In some embodiments, the second heat-insulating cover 362 is provided with a movable through-hole 3620 for the purification moving component 6 to enter the reaction space 30. The purification moving component 6 enters the second reaction subspace 302 through the movable mating through-hole 3610 and the movable through-hole 3620. In such embodiments, when the purification moving component 6 enters the second reaction subspace 302 through the movable mating through-hole 3610 and the movable through-hole 3620, the second heat-insulating cover 362 and the second mounting component 3125 can isolate the movable mating through-hole 3610 and the movable through-hole 3620 from the exhaust gas discharge channel, thereby preventing chlorine gas from corroding the purification moving component 6 and the dynamic sealing structure 65.

[0084] In some embodiments, the heating assembly may include a first heating element 3113 and a second heating element 3123. The first heating element 3113 is disposed on the first side insulation element 3112 and is used to heat the first reaction subspace 301 so that the temperature of the first reaction subspace 301 is suitable for oxygen to react with lanthanide chlorides in the chloride salt in the molten salt container 1 to form lanthanide oxide precipitates and chlorine gas; the second heating element 3123 is disposed on the second side insulation element 3122 and is used to heat the second reaction subspace 302 so that the temperature of the second reaction subspace 302 is higher than the melting point of the chloride salt. In this embodiment, the temperature of the first reaction subspace 301 is adjusted by the first heating element 3113 to a level suitable for oxygen to react with lanthanide chlorides in the molten salt in the molten salt container 1 to form lanthanide oxide precipitates and chlorine gas, thereby removing lanthanide chlorides in the first reaction subspace 301. Then, the purification moving component 6 can be used to move the molten salt container 1 from the first reaction subspace 301 to the second reaction subspace 302, and the second heating element 3123 can be used to heat the second reaction subspace 302 so that the molten salt in the second reaction subspace 302 remains in a molten state, which facilitates the removal of strontium chloride and cesium chloride.

[0085] Furthermore, in the embodiments of this application, the first heating element 3113 and the second heating element 3123 heat the two reaction subspaces respectively, so that the purification furnace body 3 can adjust the temperature of the first reaction subspace 301 and the second reaction subspace 302 respectively.

[0086] In related technologies, at least two separate devices are usually required to remove lanthanide chlorides, strontium chlorides, and cesium chloride impurities from chloride molten salts, which is cumbersome and has low purification efficiency.

[0087] In the embodiments of this application, since the purification furnace body 3 is configured to adjust the temperature of the first reaction subspace 301 and the second reaction subspace 302 respectively, one of the two reaction subspaces can be used to utilize oxygen to react with lanthanide chlorides in the chloride molten salt in the molten salt container 1 to form lanthanide oxide precipitates and chlorine gas, thereby removing lanthanide chlorides from the chloride molten salt; then, by adjusting the temperature of the first reaction subspace 301 and the second reaction subspace 302 to create a temperature difference, the purification moving component 6 drives the molten salt container 1 to move in the first reaction subspace 301 and the second reaction subspace 302, so that the chloride molten salt can be moved from the first reaction subspace 301 to the second reaction subspace 302 by temperature adjustment. A higher-temperature reaction subspace enters another lower-temperature reaction subspace, causing the chloride molten salt in the molten salt container 1 that has entered the lower-temperature reaction subspace to gradually solidify. At the same time, strontium chloride and strontium chloride can be enriched in the temporarily unsolidified chloride molten salt and eventually separated from the chloride molten salt. Thus, the molten salt purification equipment 100 provided by the embodiments of this application can remove lanthanide chloride, strontium chloride and strontium chloride impurities from chloride molten salt using only one device. This simplifies the removal operation of impurities from chloride molten salt, reduces purification time, and improves the efficiency of purifying chloride molten salt.

[0088] In some embodiments, the first heating element 3113 and the second heating element 3123 adopt resistance heating, and the heating rate is not less than 5°C / min, so as to reduce the heating time and improve the efficiency of chloride molten salt purification.

[0089] In some embodiments, the second heating element 3123 can heat the temperature of the second reaction subspace 302 to 350°C. At this temperature, it is possible to ensure that the chloride molten salt does not solidify, while also reducing the energy required to heat the second reaction subspace 302.

[0090] In some embodiments, the first reaction subspace 301 is located above the second reaction subspace 302. The molten salt container 1 can be placed in the first reaction subspace 301. Oxygen is injected into the molten salt container 1 located in the first reaction subspace 301 through the oxygen supply component 2. The temperature of the first reaction subspace 301 is adjusted to be suitable for the oxygen to react with the lanthanide chlorides in the chloride molten salt in the molten salt container 1 to form lanthanide oxide precipitates and chlorine gas, so as to remove the lanthanide chlorides in the chloride molten salt within the first reaction subspace 301.

[0091] In some embodiments, the purification furnace body 3 may further include a cooling element 3114 disposed in the first reaction subspace 301. The cooling element 3114 is used to cool the first reaction subspace 301 so that the temperature of the first reaction subspace 301 is rapidly reduced to below the melting point of the chloride molten salt. In this embodiment, the above-described configuration allows the molten chloride salt, after being heated in the first reaction subspace 301 to react with oxygen and remove lanthanide chlorides, to move to the second reaction subspace 302. The first reaction subspace 301 is then cooled using a cooling element 3114. The molten salt container 1 is then slowly moved from the second reaction subspace 302 to the first reaction subspace 301, thus achieving the removal of strontium chloride and cesium chloride. This improves the purification efficiency of impurity components in the molten chloride salt and reduces purification time. Furthermore, cooling the first reaction subspace 301 using the cooling element 3114 increases its cooling rate, which in turn shortens the cooling time of the first reaction subspace 301 when using the temperature difference between the first and second reaction subspaces 302 to remove strontium chloride and cesium chloride from the molten chloride salt, thereby increasing the purification rate of the molten chloride salt.

[0092] In some embodiments, the cooling element 3114 may be a spiral tube through which a cooling medium flows to cool the first reaction subspace 301. The cooling medium may be, for example, cooling water.

[0093] In some embodiments, the cooling element 3114 can cool the temperature of the first reaction subspace 301 to 270°C, at which temperature the chloride molten salt can be solidified while reducing the time required to cool the first reaction subspace 301.

[0094] See Figure 7 In some embodiments, the second cylinder 3121 is connected to the first cylinder 3111 below the first cylinder 3111; the purification moving assembly 6 is configured to drive the molten salt container 1 to move up and down through the isolation channel 31240. In such embodiments, the above configuration enables the purification moving assembly 6 to drive the molten salt container 1 to move in the first reaction subspace 301 and the second reaction subspace 302, so that the molten salt container 1 can be in different temperature environments during the removal of strontium chloride and cesium chloride, thereby facilitating the removal of strontium chloride and cesium chloride from the chloride molten salt by utilizing the difference in solubility of strontium chloride and cesium chloride in solid chloride molten salt and liquid chloride molten salt.

[0095] See Figure 4In some embodiments, the purification furnace body 3 may further include multiple first heating temperature measuring elements, multiple second heating temperature measuring elements, a temperature control element, multiple first space temperature measuring elements 33, multiple second space temperature measuring elements 34, and a channel temperature measuring element 35. The first heating temperature measuring elements and the second heating temperature measuring elements are used to measure the temperature of the first heating element 3113 and the second heating element 3123, respectively; the temperature control element is used to control the heating power of the first heating element 3113 and the second heating element 3123 according to the temperature measured by each of the first heating temperature measuring elements and each of the second heating temperature measuring elements, so that the temperature of the first heating element 3113 and the second heating element 3123 are respectively their set temperatures; the first space temperature measuring elements 33 and the second space temperature measuring elements 34 are used to measure the temperature of the first reaction subspace 301 and the second reaction subspace 302, respectively, so as to adjust the set temperatures of the first heating element 3113 and the second heating element 3123 according to the temperature of the first reaction subspace 301 and the second reaction subspace 302. The channel temperature sensor 35 is used to measure the temperature of the isolation channel 31240, so as to adjust the set temperature of the second heating element 3123 according to the temperature of the isolation channel 31240. In this embodiment, the temperatures of the first reaction subspace 301 and the second reaction subspace 302 are measured by the first space temperature sensor 33 and the second space temperature sensor 34, which facilitates the determination of the actual temperature of the chloride molten salt, thereby facilitating the adjustment of the temperatures of the first reaction subspace 301 and the second reaction subspace 302 as needed. The channel temperature sensor 35 measures the temperature of the isolation channel 31240 to determine whether too much heat is transferred from the second reaction subspace 302 to the first reaction subspace 301 through the isolation channel 31240. This allows for the reduction of heat transfer from the second reaction subspace 302 to the first reaction subspace 301 by adjusting the set temperature of the second heating element 3123, which is beneficial for the rapid cooling of the first reaction subspace 301 and thus improves the purification efficiency of the chloride molten salt.

[0096] Multiple first space temperature measuring elements 33 can be arranged at intervals along the height direction of the first reaction subspace 301. Multiple second space temperature measuring elements 34 can be arranged at intervals along the height direction of the second reaction subspace 302.

[0097] The temperatures of the first reaction subspace 301 and the second reaction subspace 302 can be the air temperatures within the first reaction subspace 301 and the second reaction subspace 302, respectively. In some embodiments, the temperature probes of the first space temperature measuring element 33 and the second space temperature measuring element 34 are both suspended in the air and used to measure the air temperatures within the first reaction subspace 301 and the second reaction subspace 302.

[0098] In some embodiments, when the first reaction subspace 301 is cooled by the cooling element 3114, if the temperature of the first reaction subspace 301 is too high, the heating power of the second heating element 3123 can be reduced to reduce the heat transferred from the second reaction subspace 302 to the first reaction subspace 301, thereby helping to reduce the temperature of the first reaction subspace 301.

[0099] In the following text, for ease of description, the first cover 321 and the first insulation cover 322 can be collectively referred to as the purification furnace cover 32; the second cover 361 and the second insulation cover 362 can be collectively referred to as the purification furnace base 36; the first cylindrical component 3111, the first side insulation component 3112, the first heating component 3113, the cooling component 3114 and the first mounting component 3115 can be collectively referred to as the first purification furnace section 311; and the second cylindrical component 3121, the second side insulation component 3122, the second heating component 3123, the space isolation insulation component 3124 and the second mounting component 3125 can be collectively referred to as the second purification furnace section 312.

[0100] The furnace cover 32 is detachably connected to the first furnace section 311; the first furnace section 311 is detachably connected to the second furnace section 312; and the furnace base 36 is detachably connected to the second furnace section 312. This facilitates the disassembly and individual repair of the furnace cover 32, the first furnace section 311, the second furnace section 312, and the furnace base 36 that have problems. This helps to reduce the difficulty of repair and shorten the time for operators to replace or repair.

[0101] In some embodiments, the exhaust gas passage includes a first air passage 3001 and a second air passage 3002, see [link / reference] Figure 1 and Figure 7 In some embodiments, a first air passage 3001 is formed between the first cylindrical member 3111 and the first side insulation member 3112, and a second air passage 3002 is formed between the second cylindrical member 3121 and the second side insulation member 3122. The first air passage 3001 and the second air passage 3002 are in fluid communication. The second cover member 361 forms a tail gas discharge through hole 360, and the tail gas discharge member 4 is in fluid communication with the second air passage 3002 through the tail gas discharge through hole 360.

[0102] Since the first reaction subspace 301 is connected to the first gas passage 3001 only through the airflow channel 3003, and the second reaction subspace 302 is connected to the tail gas discharge channel only through the airflow channel 3003, in this embodiment, the chlorine gas formed by oxygen and lanthanide chloride in the chloride molten salt in the molten salt container 1 can enter the first gas passage 3001 through the airflow channel 3003, and enter the tail gas discharge through hole 360 ​​through the second gas passage 3002, thereby entering the tail gas discharge device 4. With the above arrangement, the chlorine gas formed in the molten salt container 1 can be discharged to the tail gas discharge device 4 without passing through the second reaction subspace 302 after entering the first reaction subspace 301, which helps to avoid corrosion of the purification moving component 6 and the dynamic sealing structure 65 by chlorine gas.

[0103] In some embodiments, the oxygen supply assembly 2 may include an oxygen supply pipe 21 and an oxygen supply lifting drive 22 for driving the oxygen supply pipe 21 to move up and down, so that the oxygen supply pipe 21 can enter or exit the molten salt container 1. In such an embodiment, oxygen can be introduced into the chloride molten salt through the oxygen supply pipe 21 to remove the lanthanide chloride from the chloride molten salt by reacting the oxygen with the lanthanide chloride. The chlorine gas generated by the reaction can be discharged from the reaction space 30 through the tail gas exhaust device 4. The oxygen supply lifting drive 22 is used to drive the oxygen supply pipe 21 to move up and down, so that the oxygen supply pipe 21 enters and exits the molten salt container 1.

[0104] In some embodiments, the first cover 321 is configured to form an oxygen-contacting through-hole 3201 for allowing the oxygen supply pipe 21 to enter the reaction space 30. See also Figure 1 and Figure 2In some embodiments, the molten salt purification device 100 may further include a sealing and guiding component 5, which is disposed in the oxygen connection through-hole 3201. The sealing and guiding component 5 is used to form a dynamic seal between the oxygen supply pipe 21 and the oxygen connection through-hole 3201, reduce the friction force on the oxygen supply pipe 21 during vertical movement, and guide the oxygen supply pipe 21. In such embodiments, due to the provision of the sealing and guiding component 5, a dynamic seal is formed between the oxygen supply pipe 21 and the oxygen connection through-hole 3201, which can prevent oxygen and chlorine from leaking from the oxygen connection through-hole 3201 and prevent air from entering the reaction space 30 and affecting the reaction. It also reduces the friction force on the oxygen supply pipe 21 during vertical movement and guides the oxygen supply pipe 21 to prevent the outlet of the oxygen supply pipe 21 from being significantly deviated due to the aforementioned friction force, thus avoiding interference with the molten salt container 1. When removing lanthanide chlorides using the molten salt purification equipment 100 provided in the embodiments of this application, since oxygen is only introduced into the chloride molten salt through the oxygen supply pipe 21, and the reaction space 30 is heated to the reaction temperature by the purification furnace body 3, the lanthanide chlorides are removed from the chloride molten salt by reacting with the oxygen, thereby improving the efficiency of removing lanthanide chlorides from the chloride molten salt.

[0105] See Figure 3 , Figure 3 yes Figure 1 The diagram shows a partial enlarged view of the molten salt purification device 100 at the sealing guide assembly 5. In some embodiments, the sealing guide assembly 5 includes an elastic seal 51, a sealing mount 52 for mounting the elastic seal 51, and a lubricant 53. The sealing mount 52 is disposed within the oxygen mating through hole 3201, forming a channel 521 for the passage of the oxygen supply pipe 21, a sealing groove 522 communicating with the channel 521, and a lubrication groove 523 communicating with the channel 521. The elastic seal 51 is disposed within the sealing groove 522 and is configured to abut against the oxygen supply pipe 21 through elastic deformation to achieve dynamic sealing. The lubricant 53 is disposed within the lubrication groove 523 and is configured to contact the oxygen supply pipe 21 to reduce the frictional force experienced by the oxygen supply pipe 21 during lifting and lowering movements and to guide the oxygen supply pipe 21. In this embodiment, the lifting and lowering movement of the oxygen supply pipe 21 causes the elastic sealing element 51 to undergo elastic deformation and come into contact with the oxygen supply pipe 21, thereby forming a dynamic seal between the oxygen supply pipe 21 and the oxygen matching through hole 3201. The lubricating element 53 reduces the friction force on the oxygen supply pipe 21 during the lifting and lowering movement and guides the oxygen supply pipe 21 to avoid significant displacement of the outlet of the oxygen supply pipe 21 due to large friction force, and to avoid interference between the oxygen supply pipe 21 and the molten salt container 1, thereby reducing the efficiency of removing lanthanide chlorides from the chloride molten salt.

[0106] In some embodiments, the sealing mounting member 52 is fixedly connected to the first cover member 321 of the purification furnace body 3.

[0107] In some embodiments, the sealing mount 52 is fixedly connected to the peripheral wall of the oxygen mating through-hole 3201. The resilient seal 51 is capable of forming a dynamic seal between the sealing mount 52 and the oxygen supply fitting 21.

[0108] In some embodiments, the lubricant 53 is made of graphite so that it can lubricate the oxygen supply pipe 21 during its lifting and lowering motion, reduce the friction force on the oxygen supply pipe 21 during its lifting and lowering motion, and also guide the oxygen supply pipe 21 to prevent significant displacement of the outlet of the oxygen supply pipe 21 due to excessive friction.

[0109] See Figure 3 In some embodiments, the resilient seal 51 may include two sealing rings 511 arranged axially along the sealing groove 522. Each sealing ring 511 may include a sealing body 5111, a first extension 5112, and a second extension 5113. The sealing body 5111 forms a gap with the oxygen supply tube 21, the first extension 5112 extends obliquely from one end of the sealing body 5111 away from the other sealing ring 511 toward the other sealing ring 511 to abut against the oxygen supply tube 21, and the second extension 5113 extends from the end of the first extension 5112 toward the sealing body 5111, forming a gap with the sealing body 5111.

[0110] In related technologies, the large contact area between the elastic seal 51 and the oxygen supply pipe 21 results in high friction between them, affecting the raising and lowering of the oxygen supply pipe 21 and reducing the efficiency of removing lanthanide chlorides from chloride molten salt. The embodiments of this application, through the above-described arrangement, allow the elastic seal 51 to contact the oxygen supply pipe 21 only at the connection between its first extension 5112 and second extension 5113, thereby reducing the contact area between them. Furthermore, due to the aforementioned structural arrangement of the first extension 5112 and second extension 5113, the connection between them has greater elasticity, enabling close contact with the oxygen supply pipe 21. This facilitates the raising and lowering of the oxygen supply pipe 21 without affecting the dynamic seal between the sealing mounting member 52 and the corresponding oxygen supply pipe 21, thus improving the efficiency of removing lanthanide chlorides from chloride molten salt.

[0111] In addition, the inclined extension of the first extension 5112 of the two elastic seals 51 can also provide guidance for the oxygen supply tube 21, making it easier for the oxygen supply tube 21 to enter or be pulled out of the elastic seal 51.

[0112] See Figure 3 In some embodiments, the surface of the first extension 5112 facing the sealing body 5111 is recessed in a direction away from the sealing body 5111 to form an annular groove 51120. In such embodiments, the above arrangement makes it easier for the first extension 5112 to deform, thereby facilitating the first extension 5112 to seal the sealing mounting member 52 with the oxygen supply pipe 21.

[0113] See Figure 3 In some embodiments, the sealing bodies 5111 of the two sealing rings 511 abut against each other, and there is a gap between the second extensions 5113 of the two sealing rings 511. In such embodiments, the above-mentioned configuration allows the first extension 5112 and the second extension 5113 to deform to provide space, thereby facilitating the sealing rings 511 to seal between the sealing mounting member 52 and the oxygen supply pipe fitting 21.

[0114] In some embodiments, the height of the sealing body 5111 is greater than the height of the second extension 5113, so that a gap can exist between the second extensions 5113 of the two abutting sealing rings 511.

[0115] See Figure 3 In some embodiments, the cross-section of the sealing body 5111 is a right trapezoid, with the straight and inclined sides of the trapezoid located radially outward and radially inward, respectively. In such embodiments, this arrangement facilitates providing space for the deformation of the first extension 5112 and the second extension 5113, while simultaneously increasing the strength of the sealing body 5111 and preventing displacement of the sealing body 5111 due to deformation.

[0116] See Figure 1 and Figure 4 , Figure 4 yes Figure 1 The diagram shows the structure of the purification furnace body 3 of the molten salt purification device 100 when the top opening 303 of the purification furnace cover 32 is opened. In some embodiments, the reaction space 30 has a top opening 303, and the purification furnace cover 32 is configured to rotate relative to the lateral cylinder about a rotation axis parallel to the axis of the lateral cylinder to open or close the top opening 303 of the reaction space 30. In such embodiments, the way the purification furnace cover 32 opens the top opening 303 of the reaction space 30 facilitates both maintaining the stability of the oxygen supply component 2 and allowing the molten salt container 1 to be placed into or removed from the reaction space 30 through the top opening 303.

[0117] Because the furnace cover 32 rotates around a rotation axis parallel to the axis of the lateral cylinder, the oxygen supply lifting drive 22 needs to raise the oxygen supply pipe 21 above the top opening 303 of the reaction space 30 to avoid interference with the rotation of the furnace cover 32. After the molten salt container 1 is placed into the reaction space 30, the oxygen supply lifting drive 22 needs to lower the oxygen supply pipe 21 to the bottom of the molten salt container 1, which results in a longer length for the oxygen supply pipe 21. Thus, even a slight tilt at the oxygen connection through hole 3201 can cause a significant shift in the outlet of the oxygen supply pipe 21. The structure of the sealing guide component 5 in the embodiments of this application is particularly suitable for dynamic sealing of long oxygen supply pipes 21. It reduces the friction force on the oxygen supply pipes 21 during lifting and lowering and guides the oxygen supply pipes 21 to avoid significant displacement of the outlet of the oxygen supply pipes 21 due to large friction force, and avoids interference between the oxygen supply pipes 21 and the molten salt container 1, thereby reducing the efficiency of removing lanthanide chlorides from the chloride molten salt.

[0118] In some embodiments, the oxygen supply assembly 2 may be disposed on the furnace cover 32 so that when the furnace cover 32 rotates relative to the lateral cylinder, it is not necessary to completely pull the oxygen supply pipe 21 upward from the sealing guide assembly 5.

[0119] See Figure 4 In some embodiments, the oxygen supply lifting drive 22 is mounted on the furnace cover 32. The oxygen supply lifting drive 22 may include a vertical extension 221, an oxygen supply mounting part 222, and a drive 223. The vertical extension 221 is connected to the furnace cover 32 and extends vertically; the oxygen supply mounting part 222 is used to mount the oxygen supply pipe 21, and the oxygen supply mounting part 222 is slidably connected to the vertical extension 221; the drive 223 is used to drive the oxygen supply mounting part 222 to move vertically relative to the vertical extension 221. In such embodiments, the oxygen supply mounting part 222 is driven to move vertically relative to the vertical extension 221 by the drive part, thereby driving the oxygen supply pipe 21 mounted on the oxygen supply mounting part 222 to move up and down, thereby realizing the lifting and lowering of the oxygen supply pipe 21 and avoiding interference of the oxygen supply pipe 21 with the furnace cover 32.

[0120] See Figure 1 and Figure 5 , Figure 5 yes Figure 1 The enlarged view of the molten salt purification device 100 near the oxygen supply lifting drive 22 is shown. In some embodiments, the oxygen supply assembly 2 may also include a flow control component 23 for controlling the oxygen flow rate of the oxygen supply pipe 21 in order to adjust the amount of oxygen introduced into the chloride molten salt.

[0121] The oxygen supply mounting component 222 may include a vertical mounting portion 2221 and a horizontal mounting portion 2222 connected to the vertical mounting portion 2221. The vertical mounting portion 2221 is slidably connected to the vertical extension portion 221. A flow control component 23 is disposed on the vertical mounting portion 2221. An oxygen supply pipe 21 is connected to the flow control component 23 and is connected to the horizontal mounting portion 2222, passing downward through the horizontal mounting portion 2222. The section of the oxygen supply pipe 21 located below the horizontal mounting portion 2222 extends vertically. In this embodiment, when the driving component 223 drives the oxygen supply mounting component 222 to move vertically relative to the vertical extension portion 221, it is beneficial for the flow control component 23 and the oxygen supply pipe 21 to remain stable relative to the oxygen supply mounting component 222, thereby preventing loosening at the connection between the flow control component 23 and the oxygen supply pipe 21.

[0122] Flow control component 23 is, for example, a flow meter.

[0123] See Figure 6 , Figure 6 yes Figure 1 The diagram shows a partial enlarged view of the oxygen supply pipe 21 of the molten salt purification device 100. In some embodiments, the lower end of the oxygen supply pipe 21 is closed, and multiple vent holes 210 are provided on the peripheral wall near the lower end of the oxygen supply pipe 21. In such embodiments, because the lower end of the oxygen supply pipe 21 is closed, oxygen is prevented from continuously entering the chloride molten salt from the lower end of the oxygen supply pipe 21 in the form of large bubbles and leaving the molten salt container 1 without sufficient reaction. Since the oxygen in the oxygen supply pipe 21 can slowly enter the chloride molten salt through each vent hole 210, it is convenient for the impurities in the chloride molten salt to react fully with the oxygen, which is beneficial to improving the reaction rate.

[0124] In some embodiments, the diameter of the vent 210 can be 10-20% of the diameter of the oxygen supply pipe 21, so as to facilitate the slow entry of oxygen in the oxygen supply pipe 21 into the chloride molten salt through each vent 210. For example, the diameter of the oxygen supply pipe 21 can be 16 mm, and the diameter of the vent 210 can be 2.5 mm.

[0125] In some embodiments, the oxygen supply pipe 21 is provided with multiple sets of vent holes in the circumferential direction. Each set of vent holes includes multiple vent holes distributed along the axial direction of the oxygen supply pipe 21, which facilitates the slow entry of oxygen from the oxygen supply pipe 21 into the chloride molten salt through each vent hole 210. For example, the number of vent holes 210 can be 16, divided into 4 groups. The 4 groups of vent holes 210 are evenly spaced along the circumferential direction of the oxygen supply pipe 21, and each group includes 4 vent holes 210 distributed along the axial direction of the oxygen supply pipe 21. In some embodiments, the distance between the centers of two adjacent vent holes 210 in the same group can be 10 mm.

[0126] In some embodiments, the purification moving assembly 6 and the container holding assembly 73 are configured such that the container holding assembly 73 can be hoisted through the top opening 303 of the purification furnace body 3 to engage with or detach from the purification moving assembly 6, so as to facilitate the placement of the container holding assembly 73 and the plurality of molten salt containers 1 held therein into the reaction space 30, thereby facilitating the placement of the chloride molten salt to be treated into the reaction space 30. The purification moving assembly 6 is used to move the container holding assembly 73 and the molten salt containers 1 as a whole into the first reaction subspace 301 and the second reaction subspace 302.

[0127] See Figure 8 , Figure 8 yes Figure 1 The diagram shows a schematic of the molten salt purification device 100 assembled with a container holding assembly 73 and multiple molten salt containers 1. In some embodiments, the container holding assembly 73 may include multiple layers of holding portions 731, support portions 732, and holding connection portions 733. The holding portions 731 are spaced apart along the height direction, and each holding portion 731 forms a holding hole 7310 for the molten salt container 1 to pass through. The molten salt container 1 can pass through the corresponding holding hole 7310 of each layer of holding portion 731. The support portion 732 is disposed below each layer of holding portion 731 to provide support for the lower end of the molten salt container 1. The holding connection portion 733 connects each layer of holding portion 731 and the support portion 732. In such embodiments, multiple molten salt containers 1 can be held by the multiple layers of holding portions 731 and the support portion 732 to prevent the molten salt containers 1 from tipping over, without affecting the introduction of oxygen into each molten salt container 1 or the heating of each molten salt container 1.

[0128] In some embodiments, the number of retaining holes 7310 formed by each retaining part 731 can be 5, that is, the number of molten salt containers 1 that the container retaining assembly 73 can hold can be 5.

[0129] See Figure 8 In some embodiments, the uppermost holding portion 731 also forms a lifting assembly 734 for cooperating with external lifting equipment (e.g., lifting equipment inside the hot chamber) to lift the container holding assembly 73 and the plurality of molten salt containers 1 held therein into the purification furnace body 3 to cooperate with the purification moving assembly 6. The purification moving assembly 6 then provides support for the container holding assembly 73 and lifts the container holding assembly 73 and the plurality of molten salt containers 1 held therein away from the purification moving assembly 6. The embodiments of this application improve the efficiency of feeding and discharging into the purification furnace body 3, thereby improving the purification efficiency of chloride molten salt.

[0130] See Figure 8In some embodiments, the lifting fitting 734 is located in the middle of the holding portion 731, and the holding holes 7310 are distributed around the lifting fitting 734. In such embodiments, the above arrangement allows each molten salt container 1 to be evenly distributed around the lifting fitting 734, which can prevent the container holding assembly 73 from tilting when being lifted through the lifting fitting 734, thereby reducing the difficulty of lifting and improving the lifting efficiency.

[0131] The inventors of this application have discovered that when the container holding assembly 73 is hoisted as a whole into the reaction space 30 and used in conjunction with the purification moving assembly 6 using hoisting equipment, the molten salt container 1 and the oxygen supply pipe 21 may be misaligned, which makes it difficult for the oxygen supply pipe 21 to be accurately inserted into the corresponding molten salt container 1 and to supply oxygen to the molten salt container 1.

[0132] For this question, see [link / reference] Figure 2 In some embodiments, the purification moving component 6 is also configured to provide support and positioning for the container holding component 73 so that the multiple molten salt containers 1 can be aligned with the multiple oxygen supply pipes 21 respectively, and to drive the container holding component 73 to move in the reaction space 30, thereby preventing the oxygen supply pipes 21 from being misaligned when they are lowered and inserted into the molten salt containers 1, thus preventing oxygen from being supplied to the molten salt containers 1.

[0133] See Figure 1 In some embodiments, the purification moving component 6 may include a support positioning part 61, a moving heat insulation part 62, a purification moving component 63, and a moving drive component. The support positioning part 61 is used to provide support and positioning for the container holding component 73; the purification moving component 63 is used to drive the support positioning part 61 to move; the moving heat insulation part 62 is disposed on the purification moving component 63, and the moving heat insulation part 62 is used to keep the second reaction subspace 302 or the first reaction subspace 301 warm; the moving drive component is used to drive the purification moving component 63 to move. In such embodiments, by providing support and positioning for the container holding component 73 through the support positioning part 61, multiple molten salt containers 1 can be aligned with multiple oxygen supply pipes 21 respectively, so that the oxygen supply pipes 21 can be inserted into the corresponding molten salt containers 1 to supply oxygen to the molten salt containers 1; by keeping the second reaction subspace 302 or the first reaction subspace 301 warm through the moving heat insulation part 62, it is beneficial to ensure that the second reaction subspace 302 or the first reaction subspace 301 can reach a preset temperature.

[0134] In some embodiments, the purification moving part 63 forms an insulated space 601, and the moving insulated part 62 is disposed in the insulated space 601.

[0135] The purification moving component 6 may also include a moving rod 64 connected to the purification moving component 63. The moving drive component drives the moving rod 64 to move, thereby causing the purification moving component 63 to rise and fall.

[0136] See Figures 10 to 13 In some embodiments, the support positioning part 61 may include a support body 611 and a plurality of support positioning members 6110 disposed on the support body 611. The accommodating member holding assembly 73 forms a plurality of positioning mating members 7320 so as to position the accommodating member holding assembly 73 by the cooperation of the support positioning members 6110 and the positioning mating members 7320, so that when the accommodating member holding assembly 73 is supported by the purification moving assembly 6, each molten salt accommodating member 1 can be aligned with each oxygen supply pipe 21 respectively.

[0137] See Figure 12 In some embodiments, all the support positioning members 6110 of the support positioning part 61 are arranged non-rotationally symmetrically with respect to the center line of the support body 611; the positions of the positioning mating members 7320 correspond one-to-one with the positions of the support positioning members 6110. In such embodiments, when the support body 611 rotates relative to its center line, the multiple support positioning members 6110 will not completely coincide with their positions before rotation, so that there is a unique mating position between the receiving member holding assembly 73 and the support positioning part 61, so that when the receiving member holding assembly 73 is supported by the purification moving assembly 6, the position of each molten salt receiving member 1 in the reaction space 30 is uniquely determined.

[0138] See Figure 12 In some embodiments, there are three support positioning members 6110, and the line connecting the three support positioning members 6110 forms a non-equilateral triangle; there are three positioning mating members 7320, and the positions of the three positioning mating members 7320 correspond one-to-one with the positions of the three support positioning members 6110, so that there is a unique mating position between the receiving member holding assembly 73 and the support positioning part 61.

[0139] In some embodiments, the support positioning member 6110 is a positioning protrusion and the positioning mating member 7320 is a positioning through hole, so that the positioning of the support positioning part 61 and the receiving member retaining assembly 73 can be achieved through the cooperation of the positioning protrusion and the positioning through hole.

[0140] The inventors of this application discovered that after the molten salt purification process is completed, the container holding assembly 73 and the purification moving assembly 6 are not easily separated. The inventors further discovered that this may be due to the vapors from the chloride molten salt causing adhesion between the mating surfaces of the container holding assembly 73 and the purification moving assembly 6, or other reasons (such as a high-temperature oxygen environment) causing corrosion at the mating surfaces, thus making it difficult to separate the container holding assembly 73 and the purification moving assembly 6. For more information on this problem, see [link to relevant documentation]. Figure 12In some embodiments, the support body 611 is a ring. By setting the support body 611 as a ring, the embodiments of this application can reduce the contact area between the support body 611 and the receiving member retaining assembly 73, which helps to avoid the difficulty in separating the two due to adhesion or corrosion of the support body 611 and the receiving member retaining assembly 73.

[0141] In some embodiments, when the receiving member retaining assembly 73 includes a support portion 732, a positioning mating member 7320 is formed on the support portion 732, and a support positioning portion 61 is used to provide support and positioning for the support portion 732.

[0142] In some embodiments, the inner diameter of the ring (i.e., the support body 611) is two-fifths to three-fifths of the radius of the support portion 732, and the outer diameter of the ring is three-fifths to four-fifths of the radius of the support portion 732, so as to minimize the contact area between the support body 611 and the support portion 732, while also facilitating the support body 611 to provide stable support to the support portion 732.

[0143] In some embodiments, when the hoisting housing holding assembly 73 is separated from the purification moving assembly 6, the hoisting mating member 734 can be raised by the purification moving assembly 6 to a preset height such that the upper surface of the hoisting mating member 734 is higher than the top opening 303, so that the hoisting equipment in the hot chamber can engage with the hoisting mating member 734, thereby hoisting the housing holding assembly 73 away from the purification furnace body 3. The preset height can be 100mm, which is more conducive to the engagement of the hoisting equipment in the hot chamber with the hoisting mating member 734.

[0144] In some embodiments, the purification moving component 6 is also configured to keep the first reaction subspace 301 or the second reaction subspace 302 warm, so as to reduce the heat diffused from the first reaction subspace 301 to the second reaction subspace 302 through the isolation channel 31240 or reduce the heat lost from the second reaction subspace 302 to the outside through the moving engagement through hole 3610 and the moving through hole 3620, thereby helping to ensure that the first reaction subspace 301 or the second reaction subspace 302 can reach the preset temperature.

[0145] In some embodiments, the support positioning part 61 may further include a plurality of support columns 612 for connecting the support body 611 to the movable insulation member 62 or the purification movable member 63.

[0146] In some embodiments, since some impurity components in the chloride molten salt contain radioactivity, the molten salt purification device 100 may be located in a heated chamber.

[0147] See Figure 1 and Figure 4In some embodiments, the molten salt purification equipment 100 may further include a furnace cover movement mechanism 8, used to drive the purification furnace cover body 32 to rise, fall, and rotate relative to the lateral cylinder, so that the top opening 303 is fully opened or fully closed; when the top opening 303 is fully opened, the purification moving component 6 can drive the receiving component holding component 73 to move to a position protruding from the top opening 303. In such embodiments, the furnace cover movement mechanism 8 drives the purification furnace cover body 32 to rise, fall, and rotate relative to the lateral cylinder, so that the top opening 303 is fully opened, and the purification moving component 6 drives the receiving component holding component 73 to a position protruding from the top opening 303, making it easier to use a hoisting device to lift the receiving component holding component 73 away, thereby improving the efficiency of chloride molten salt discharge after purification. In addition, a new receiving component holding component 73 can also be hoisted through the top opening 303 to cooperate with the purification moving component 6, improving the efficiency of chloride molten salt feeding.

[0148] See Figure 14 and Figure 15 In some embodiments, the furnace cover movement mechanism 8 may include a moving part 81 fixedly connected to the purification furnace cover body 32, a movement drive assembly 82 fixedly connected to the first cylindrical member 3111, and a movement mating part 83 detachably connected to the first cylindrical member 3111. The movement mating part 83 is configured to guide the movement of the moving part 81, so that the moving part 81 can rise, fall, and rotate under the driving action of the movement drive assembly 82. In such an embodiment, the movement of the moving part 81 is guided by the movement mating part 83, and the moving part 81 is driven by the movement drive assembly, so that the moving part 81 can rise, fall, and rotate, thereby enabling the moving part 81 to drive the purification furnace cover body 32 fixedly connected to it to rise, fall, and rotate.

[0149] In some embodiments, the motion drive assembly 82 may include a rotation drive part 821, a rotation part 822, and a threaded engagement part 823 that is threadedly engaged with the rotation part 822. The rotation drive part 821 is used to drive the rotation part 822 to rotate, and the threaded engagement part 823 is rigidly connected to the motion part 81 in a detachable manner. When the threaded engagement part 823 is disconnected from the motion part 81 and the motion engagement part 83 is disconnected from the first cylinder 3111, the purification furnace cover 32 can be lifted upwards relative to the first cylinder 3111, the rotation part 822, and the threaded engagement part 823 together with the motion part 81 and the motion engagement part 83 to separate it from the side cylinder.

[0150] The embodiments of this application enable the purification furnace cover 32 to be lifted upwards along with the moving part 81, the moving mating part 83 relative to the first cylinder 3111, the rotating part 822, and the threaded mating part 823 to separate from the side cylinder. This facilitates the use of lifting equipment to lift the purification furnace cover 32 away from or into the hot chamber, making maintenance and disassembly easier, thereby improving the efficiency of removing lanthanide chlorides from chloride molten salts.

[0151] In some embodiments, the motion mating part 83 may include a guide cylinder 831 and a guide connecting part 832 for detachably connecting the guide cylinder 831 to the first cylinder 3111; wherein, the guide cylinder 831 is formed with a guide part 8310; the motion part 81 enters the guide cylinder 831 and forms a guide mating part 812. Through the cooperation of the guide part 8310 and the guide mating part 812, the motion part 81 can move up and down and rotate when the rotating part 822 rotates, so as to drive the purification furnace cover 32 fixedly connected to the motion part 81 to move up and down and rotate. In such an embodiment, through the cooperation of the guide part 8310 and the guide mating part 812, the motion part 81 and the threaded mating part 823 can move up and down and rotate when the rotating part 822 rotates, so that only one driving part (i.e., the rotation driving part 821) is provided and no additional lifting driving part is required, so that the top opening 303 can be completely opened or completely closed.

[0152] In some embodiments, the rotating part 822 is, for example, a screw, and the threaded part 823 can be a nut that is threaded into the screw. In some embodiments, the rotating part 822 and the threaded part 823 can form a ball screw.

[0153] In some embodiments, the guide connection 832 is detachably connected to the first cylindrical member 3111 by a fixing bolt 87. When the fixing bolt 87 is removed, the guide connection 832 is disconnected from the first cylindrical member 3111.

[0154] In some embodiments, the guide portion 8310 may be a guide groove, and the guide mating portion 812 enters the guide groove 8310 to slide along the guide groove 8310. In such an embodiment, the sliding of the guide mating portion 812 along the guide groove 8310 enables the moving portion 81 to rise and fall and rotate when the rotating portion 822 rotates.

[0155] In some embodiments, the guide groove 8310 may include a vertical extension 83101 and an inclined extension 83102 connected to the top of the vertical extension 83101. In such an embodiment, when the furnace cover 32 closes the top opening 303 of the furnace body 3, the guide mating part 812 is located at the bottom end of the vertical extension 83101. When it is necessary to open the top opening 303, the rotation drive 821 drives the rotation part 822 to rotate in the first direction. At this time, due to the limiting effect of the vertical extension section 83101 on the guide mating part 812, the moving part 81 and the threaded mating part 823 cannot rotate. They can only rise in the vertical direction with the rotation of the rotation part 822 until the guide mating part 812 enters the inclined extension section 83102 (at this time, the purification furnace cover 32 rises together with the moving part 81, thereby separating the purification furnace cover 32 from the side cylinder). Afterwards, as the rotation part 822 continues to rotate in the first direction, the guide mating part 812 can slide along the inclined extension section 83102, and the moving part 81 and the threaded mating part 823 accordingly perform a spiral upward movement (i.e., rise and rotate simultaneously), thereby exposing the top opening 303. When it is necessary to close the top opening 303 of the purification furnace body 3 using the purification furnace cover 32, the rotation drive 821 drives the rotation part 822 to rotate in the second direction opposite to the first direction. The motion part 81 and the threaded engagement part 823 first perform a spiral descent motion (i.e., descent and rotation are performed simultaneously) until the guide engagement part 812 enters the vertical extension section 83101. The rotation drive 821 continues to drive the rotation part 822 to rotate in the second direction. The motion part 81 and the threaded engagement part 823 descend in the vertical direction until the guide engagement part 812 is located at the bottom end of the vertical extension section 83101. At this time, the purification furnace cover 32 closes the top opening 303 of the purification furnace body 3.

[0156] In some embodiments, the projection of the inclined extension section 83102 on the horizontal plane is an arc, and the central angle corresponding to the arc is greater than 90°, so that when the guide fitting part 812 enters the inclined extension section 83102 and slides along the inclined extension section 83102, the moving part 81 can drive the purification furnace cover 32 to rotate more than 90 degrees, thereby exposing the top opening 303.

[0157] In some embodiments, the end of the moving part 81 facing the rotating part 822 forms a first mating groove 810 and a second mating groove 811 connected to the first mating groove 810. The threaded mating part 823 may include a mating body 8231 and a mounting part 8232 connected to the mating body 8231. The mating body 8231 enters the first mating groove 810, and the mounting part 8232 is detachably connected to the moving part 81 outside the first mating groove 810 by a fastener 824. The rotating part 822 extends out of the threaded mating part 823 and enters the second mating groove 811. In such an embodiment, the mounting part 8232 is detachably connected to the moving part 81 by the fastener 824. When the fastener 824 is removed, the threaded mating part 823 is disconnected from the moving part 81, and the threaded mating part 823 and the rotating part 822 can be separated from the first mating groove 810 and the second mating groove 811 of the moving part 81 in a vertical direction.

[0158] In some embodiments, the fastener 824 may be a bolt.

[0159] In some embodiments, both the mating body 8231 and the mounting portion 8232 are threadedly engaged with the rotating portion 822.

[0160] In some embodiments, the rotation drive unit 821 may include a motor 8211 and a reducer 8212 connected to the motor 8211, and the rotation unit 822 is connected to the reducer 8212 so that the motor 8211 can drive the rotation unit 822 to rotate.

[0161] In some embodiments, the furnace cover moving mechanism 8 may further include a drive connector 84 for fixing the rotation drive unit 821 to the first cylinder 3111. See also Figure 15 The drive connector 84 may include a first mounting member 841, a second mounting member 842, and a reinforcing member 843. The rotation drive part 821 is fixedly mounted below the first mounting member 841, the rotation part 822 extends upward through the first mounting member 841, and the threaded engagement part 823 is threadedly engaged with the rotation part 822 above the first mounting member 841.

[0162] The second mounting member 842 is used to be fixedly connected to the first cylindrical member 3111, and the first mounting member 841 is fixedly connected to the second mounting member 842; the reinforcing member 843 is used to connect to both the first mounting member 841 and the second mounting member 842 at the same time to enhance the connection strength between the first mounting member 841 and the second mounting member 842.

[0163] In some embodiments, the second mounting member 842 is fixedly connected to the first cylindrical member 3111 by bolts 88.

[0164] In some embodiments, the furnace cover movement mechanism 8 may further include a movement connector 85 for fixing the movement part 81 to the purification furnace cover body 32. The movement connector 85 may include a connecting cylinder 851 and a connector 852. The movement part 81 enters the connecting cylinder 851 and is fixedly connected to the connecting cylinder 851; the connector 852 is used to fix the connecting cylinder 851 to the purification furnace cover body 32.

[0165] In some embodiments, the furnace cover moving mechanism 8 may further include a lifting member 86 disposed on the moving part 81 for lifting the moving part 81. See also Figure 4 The purification furnace cover 32 is provided with a cover lifting component 3203. When the threaded mating part 823 is disconnected from the moving part 81 and the moving mating part 83 is disconnected from the first cylinder 3111, the lifting equipment can lift the purification furnace cover 32, the moving part 81 and the moving mating part 83 together relative to the first cylinder 3111 through the lifting component 86 and the cover lifting component 3203, so as to separate them from the side cylinder.

[0166] In some embodiments, the first purification furnace section 311 is supported by the second purification furnace section 312. The first purification furnace section 311 is configured to be lifted upward relative to the second purification furnace section 312 after the detachable connection is released, so as to facilitate the separation of the first purification furnace section 311 from the second purification furnace section 312 by hoisting, thereby facilitating the disassembly, assembly, and maintenance of the purification furnace body 3. In such embodiments, the first purification furnace section 311 and the second purification furnace section 312 are joined together. In the embodiments of this application, the joining of two components means that one component is placed or stacked on top of another component, supported by the other component, and the component above can move vertically upward under the action of external force to separate from the component below. In some embodiments, the two joined components can be positioned by respectively providing vertically extending positioning holes and vertically extending positioning pins; or by respectively providing vertically extending grooves or protrusions.

[0167] In some embodiments, a first splicing fitting 3116 is formed at the lower end of the first purification furnace section 311, and a second splicing fitting 3126 is formed at the upper end of the second purification furnace section 312 facing the first splicing fitting 3116. In such embodiments, the splicing of the first purification furnace section 311 and the second purification furnace section 312 can be achieved by the cooperation of the first splicing fitting 3116 and the second splicing fitting 3126 which are arranged facing each other.

[0168] In some embodiments, the first splicing mating part 3116 and the second splicing mating part 3126 have a flange structure, which facilitates increasing the contact area and helps improve the stability of the splicing.

[0169] In some embodiments, the second splicing member 3126 forms a second positioning member 31261, and the first splicing member 3116 correspondingly forms a first positioning hole 31161. When the first purification furnace section 311 is hoisted onto the second purification furnace section 312, the second positioning member 31261 can enter the first positioning hole 31161 to circumferentially position the first purification furnace section 311 and the second purification furnace section 312, preventing circumferential relative rotation between the first purification furnace section 311 and the second purification furnace section 312. In some embodiments, the second positioning member 31261 can be a stud fixed to the second splicing member 3126, or the stud can be fastened using a nut.

[0170] In some embodiments, a first splicing fitting 3116 is formed at the lower end of the first cylindrical member 3111, and a second splicing fitting 3126 is formed at the upper end of the second cylindrical member 3121. A first side insulation member 3112 is connected to the first cylindrical member 3111, and a second side insulation member 3122 is connected to the second cylindrical member 3121.

[0171] In some embodiments, the second purification furnace section 312 is supported by the purification furnace base 36 and is configured to be lifted upward relative to the purification furnace base 36 to separate it from the purification furnace base 36, so as to facilitate the separation of the second purification furnace section 312 from the purification furnace base 36 by hoisting, thereby facilitating the maintenance of the second purification furnace section 312.

[0172] The lower end of the second purification furnace section 312 forms a third splicing component 3127, and the upper end of the purification furnace base 36 forms a fourth splicing component 363 facing the third splicing component 3127. In this embodiment, the splicing of the second purification furnace section 312 and the purification furnace base 36 can be achieved by the cooperation of the third splicing component 3127 and the fourth splicing component 363 which are arranged facing each other.

[0173] In some embodiments, the third splicing mating component 3127 and the fourth splicing mating component 363 have flange structures, which facilitates increasing the contact area and improves the stability of the splicing. The structures of the third splicing mating component 3127 and the fourth splicing mating component 363 may be the same as or similar to the structures of the first splicing mating component 3116 and the second splicing mating component 3126, respectively, and will not be described in detail here.

[0174] In some embodiments, a third splicing fitting 3127 is formed at the lower end of the second cylindrical member 3121, and a fourth splicing fitting 363 is formed on the second cover member 361.

[0175] In some embodiments, the second side insulation component 3122 is spliced ​​with the second insulation cover component 362. The space isolation insulation component 3124 is spliced ​​with the first side insulation component 3112 and the second side insulation component 3122 to improve the insulation effect.

[0176] See Figure 1 and Figure 7 In some embodiments, the molten salt purification equipment 100 may further include a support platform 9, a purification furnace base 36 disposed on the support platform 9, and lifting channels 3601 and 90 respectively provided on the purification furnace base 36 and the support platform 9; the purification moving component 6 is configured to enter the reaction space 30 through the lifting channels 3601 and 90. The purification moving component 6 is connected to the support platform 9; the support platform 9, the purification furnace base 36, and the purification moving component 6 can be lifted apart together. In such an embodiment, the purification furnace base 36 is disposed on the support platform 9 so that the purification moving component 6 can enter the reaction space 30 through the lifting channel 90, facilitating the lifting and lowering of the purification moving component 6; at the same time, the support platform 9, the purification furnace base 36, and the purification moving component 6 can be lifted apart together, facilitating the maintenance and replacement of the purification furnace base 36 and the purification moving component 6.

[0177] In some embodiments, the movable through hole 3610 and the movable through hole 3620 together form the lifting channel 3601.

[0178] In some embodiments, see Figure 7 The dynamic sealing structure 65 is provided in the lifting channel 3601 and the lifting channel 90 so that the moving rod 64 can achieve dynamic sealing with the lifting channel 3601 and the lifting channel 90.

[0179] In some embodiments, the purification moving component 6 and the purification furnace base 36 are both fixed to the support platform 9 so that the support platform 9, the purification furnace base 36 and the purification moving component 6 can be lifted off together.

[0180] In some embodiments, the second heat-insulating cover 362 also forms a groove 3621 adapted to the purification moving member 63, so that when the purification moving member 6 moves the receiving member holding member 73 to the second reaction subspace 302, the purification moving member 63 is located in the groove 3621 formed by the second heat-insulating cover 362, thereby improving the heat-insulating effect of the second reaction subspace 302.

[0181] In some embodiments, the size of the isolation channel 31240 is clearance-fitted with the purification moving member 63 so that when the purification moving member 6 moves the receiving member holding member 73 to the first reaction subspace 301, the purification moving member 63 is located within the isolation channel 31240, thereby improving the heat preservation effect of the first reaction subspace 301.

[0182] In related technologies, since chloride molten salt is radioactive, it is currently mainly placed into the molten salt container 1 by a robotic arm, which results in low feeding efficiency and thus low purification efficiency of chloride molten salt.

[0183] For the above issues, please refer to Figure 1 In some embodiments, the molten salt purification apparatus 100 may further include a chloride molten salt feeding device 7 for feeding chloride molten salt into a plurality of molten salt containers 1. The chloride molten salt feeding device 7 may include a molten salt receiving container 71, a molten salt suction member 72, and a rotary transport assembly 74. The molten salt receiving container 71 is used to receive chloride molten salt to be processed, and the molten salt receiving container 71 is configured to form an outlet 712; the molten salt suction member 72 is used to provide a suction force to allow the chloride molten salt to be processed to enter the molten salt receiving container 71; the rotary transport assembly 74 is configured to move the container holding assembly 73 to a position where one molten salt container 1 is aligned with the outlet 712 of the molten salt receiving container 71, so that the molten salt in the molten salt receiving container 71 can enter the molten salt container 1 through the outlet 712; and is configured to rotate the container holding assembly 73 so that each molten salt container 1 can be aligned with the outlet 712. In this embodiment, multiple molten salt containers 1 are held by the container holding assembly 73, and the container holding assembly 73 is moved and rotated by the rotating transport assembly 74 so that each molten salt container 1 can be aligned with the liquid outlet 712, thereby realizing feeding into each molten salt container 1, improving feeding efficiency, and thus improving the purification efficiency of chloride molten salt.

[0184] Molten salt suction component 72 is, for example, a vacuum pump.

[0185] See Figure 1 and Figure 9 In some embodiments, the rotating transport assembly 74 may include a support mating part 741, a rotating member 742, and a moving member 743. The support mating part 741 is used to cooperate with the container holding assembly 73 to provide support for the container holding assembly 73; the rotating member 742 is used to drive the support mating part 741 to rotate, thereby driving the container holding assembly 73 to rotate together; the moving member 743 is used to move the rotating member 742 and the support mating part 741 so that one of the molten salt containers 1 of the container holding assembly 73 is aligned with the liquid outlet 712 of the molten salt receiving container 71. In such an embodiment, the moving member 743 drives the rotating member 742 and the support mating part 741 to move, and the rotating member 742 drives the support mating part 741 to rotate, so that each molten salt container 1 held by the container holding assembly 73 can be aligned with the liquid outlet 712, thereby feeding multiple molten salt containers 1 held by the container holding assembly 73 to improve feeding efficiency.

[0186] In some embodiments, the structure of the support mating part 741 may be substantially the same as the structure of the support positioning part 61. See also Figure 9In some embodiments, the support mating part 741 includes a support mating body 7411 and a plurality of support mating positioning members 7410 disposed on the support mating body 7411. The support mating positioning members 7410 can cooperate with the positioning mating members 7320 of the support part 732, so that the support part 732 and the support mating part 741 are circumferentially relatively stationary through the cooperation of the support mating positioning members 7410 and the positioning mating members 7320. In such embodiments, the support part 732 and the support mating part 741 are circumferentially relatively stationary, so that the support part 732 and the support mating part 741 can be rotated together by the rotating member 742, thereby enabling each molten salt container 1 held by the container holding assembly 73 to be aligned with the liquid outlet 712.

[0187] In some embodiments, all the support-fitting positioning members 7410 of the support-fitting part 741 are arranged non-rotationally symmetrically with respect to the center line of the support-fitting body 7411; the positions of the positioning members 7320 correspond one-to-one with the positions of the support-fitting positioning members 7410. In such an embodiment, when the support-fitting part 741 rotates relative to its center line, the plurality of support-fitting positioning members 7410 will not completely coincide with their positions before rotation, so that there is a unique mating position between the receiving member holding assembly 73 and the support-fitting part 741, so that when the receiving member holding assembly 73 is supported by the support-fitting part 741, the position of each molten salt receiving member 1 in the receiving member holding assembly 73 is uniquely determined.

[0188] See Figure 9 In some embodiments, there are three supporting and positioning members 7410, and the line connecting the three supporting and positioning members 7410 forms a non-equilateral triangle; there are three positioning members 7320, and the positions of the three positioning members 7320 correspond one-to-one with the positions of the three supporting and positioning members 7410, so that the receiving member holding assembly 73 and the supporting and positioning part 741 have a unique relative position.

[0189] In some embodiments, the support fitting positioning member 7410 is a positioning protrusion and the positioning fitting member 7320 is a positioning through hole, so that the positioning of the support fitting part 741 and the receiving member retaining assembly 73 can be realized through the cooperation of the positioning protrusion and the positioning through hole.

[0190] See Figure 9 In some embodiments, the support mating body 7411 is an annular plate and the support portion 732 is a circular plate. The outer diameter of the circular plate is larger than the outer diameter of the annular plate to reduce the contact area between the support mating body 7411 and the receiving member retaining assembly 73. This helps to avoid the difficulty in separating the support mating body 7411 and the receiving member retaining assembly 73 due to adhesion or corrosion. It also helps to enable the support mating body 7411 to provide stable support to the support portion 732.

[0191] See Figure 9 In some embodiments, the rotating transport assembly 74 may further include a mating member 744 for sliding engagement with the moving member 743. Through the sliding engagement between the moving member 743 and the mating member 744, the moving member 743 can move along the mating member 744, thereby enabling the moving member 743 to drive the rotating member 742 and the supporting mating part 741 to move.

[0192] See Figure 9 In some embodiments, the rotating transport assembly 74 may further include a moving drive 745 and a rotating drive 746. The moving drive 745 is used to drive the moving member 743 to move along the mating member 744, and the rotating drive 746 is used to drive the rotating member 742 to rotate, thereby causing the rotating member 742 to drive the supporting mating part 741 to rotate.

[0193] See Figure 1 In some embodiments, the molten salt receiving container 71 may include a container body 711, a heating element, and a control valve 713. The container body 711 is used to receive the chloride molten salt to be processed, and a liquid outlet 712 is formed at the bottom of the container body 711. The heating element is used to heat the container body 711 to prevent the chloride molten salt from solidifying. The control valve 713 is disposed on the liquid outlet 712 and configured to control the opening or closing of the liquid outlet 712, and to automatically control the opening duration of the liquid outlet 712 according to the volume of the molten salt container 1. In such embodiments, the heating element heats the container body 711 to prevent the chloride molten salt from solidifying, thereby ensuring that the chloride molten salt in the container body 711 can flow into the molten salt container 1 through the liquid outlet 712. At the same time, the control valve 713 controls the opening or closing of the liquid outlet 712 and the opening duration, which can control the amount of chloride molten salt entering each molten salt container 1, which is beneficial for precise feeding into each molten salt container 1 and improves feeding efficiency.

[0194] In some embodiments, the outlet 712 is formed at the bottom of the molten salt receiving container 71 so that the molten salt in the molten salt receiving container 71 can flow out through the outlet 712 under the action of gravity. In some embodiments, the chloride molten salt feeding device 7 further includes a support frame 75, the molten salt receiving container 71 is disposed above the support platform 9 through the support frame 75, and the mating part 744 extends from the outside of the support frame 75 to the bottom of the molten salt receiving container 71 so that the moving part 743 can be positioned directly below the outlet 712 and outside the support frame 75, thereby facilitating the engagement and disengagement of the receiving part holding assembly 73 and the support mating part 741 using a hoisting device.

[0195] Embodiments of this application also provide a method for removing impurity components from chloride molten salt, which is implemented using the molten salt purification equipment 100 provided in any embodiment of this application. The impurity components include lanthanide chlorides, strontium chloride, and cesium chloride. The method for removing impurity components from chloride molten salt may include the following steps: S10, injecting chloride molten salt into a molten salt container 1 and placing the molten salt container 1 into a first reaction subspace 301; S20, heating the first reaction subspace 301 and supplying oxygen to the molten salt container 1 so that the lanthanide chlorides in the chloride molten salt react with oxygen to form a precipitate and chlorine gas; S30, then heating the second reaction subspace 302 so that the temperature of the second reaction subspace 302 is higher than the melting point of the chloride molten salt; S40, removing the molten salt container 1 from the first reaction subspace. 301 is moved to the second reaction subspace 302 and the first reaction subspace 301 is cooled so that the temperature of the first reaction subspace 301 is lower than the melting point of the chloride molten salt; S50, the molten salt container 1 is moved from the second reaction subspace 302 to the first reaction subspace 301 at a preset rate so that the chloride molten salt entering the first reaction subspace 301 in the molten salt container 1 gradually solidifies, so that strontium chloride and cesium chloride can be enriched in the chloride molten salt located in the second reaction subspace 302, and thus finally separate from the chloride molten salt and solidify.

[0196] The method provided in the embodiments of this application involves placing molten salt into the first reaction subspace 301 of the molten salt purification device 100, heating the first reaction subspace 301 and introducing oxygen into the molten salt to cause lanthanide chlorides to form lanthanide oxide precipitates. Without removing the lanthanide oxide precipitates from the chloride molten salt, the molten salt container 1 can be transferred to the second reaction subspace 302. After cooling the first reaction subspace 301, the molten salt container 1 moves from the second reaction subspace 302 to the first reaction subspace 301, thereby removing strontium chloride and cesium chloride. Thus, the molten salt purification device 100 provided in the embodiments of this application can remove lanthanide chlorides, strontium chloride, and strontium chloride impurities from chloride molten salt using only one device, simplifying the removal operation of impurities in chloride molten salt, reducing purification time, and improving the efficiency of purifying chloride molten salt.

[0197] In some embodiments, in step S20, the set temperature of the first heating element 3113 can be adjusted based on the temperatures measured by the plurality of first space temperature measuring elements 33, so that the temperature of the first reaction subspace 301 reaches the expected temperature. The temperature inside the first reaction subspace 301 is typically lower than the temperature of the first heating element 3113, and the temperature of the chloride molten salt in the molten salt container 1 is also typically lower than the temperature of the first heating element 3113. Therefore, it is necessary to adjust the actual temperature inside the first reaction subspace 301 to the expected temperature. For example, when removing lanthanide chlorides, it is necessary to adjust the actual temperature inside the first reaction subspace 301 to a temperature conducive to the reaction between oxygen and lanthanide chlorides; when removing strontium chloride and cesium chloride, it is necessary to adjust the actual temperature inside the first reaction subspace 301 to a temperature lower than the melting point of the chloride molten salt. In the embodiments of this application, the temperature of the first reaction subspace 301 is measured by the first space temperature measuring element 33, and the set temperature of the first heating element 3113 is adjusted according to the temperature measured by the first space temperature measuring element 33, so as to ensure that the temperature of the first reaction subspace 301 can reach the expected temperature, which is beneficial to removing lanthanide chlorides, strontium chloride and cesium chloride from the chloride molten salt.

[0198] In some embodiments, in step S30, the set temperature of the second heating element 3123 can be adjusted based on the temperatures measured by the multiple second space temperature measuring elements 34, so that the temperature of the second reaction subspace 302 reaches a expected temperature higher than the melting point of the chloride molten salt. The temperature inside the second reaction subspace 302 is typically lower than the temperature of the second heating element 3123, and the temperature of the chloride molten salt in the molten salt container 1 is also typically lower than the temperature of the second heating element 3123. Therefore, it is necessary to adjust the actual temperature inside the second reaction subspace 302 to the expected temperature. Thus, when removing strontium chloride and cesium chloride, it can be ensured that the temperature of the second reaction subspace 302 reaches the expected temperature. The embodiments of this application measure the temperature of the second reaction subspace 302 using the second space temperature measuring elements 34, and adjust the set temperature of the second heating element 3123 based on the temperature measured by the second space temperature measuring elements 34 to ensure that the temperature of the second reaction subspace 302 reaches the expected temperature, which is beneficial for removing strontium chloride and cesium chloride from the chloride molten salt.

[0199] In some embodiments, step S40 may further include: adjusting the set temperature of the second heating element 3123 according to the temperature measured by each first space temperature measuring element 33 and the temperature measured by the channel temperature measuring element 35, so as to reduce the heat transfer from the second reaction subspace 302 to the first reaction subspace 301, and avoid the temperature of the first reaction subspace 301 being too high, which is not conducive to the removal of strontium chloride and cesium chloride in the chloride molten salt and affects the purification efficiency of the chloride molten salt.

[0200] In some embodiments, during step S20, when oxygen is supplied to the molten salt container 1, chlorine is extracted from the first reaction subspace 301 without passing through the second reaction subspace 302. This facilitates the continued reaction of lanthanide chloride with oxygen and avoids corrosion of the purification moving component 6 and the dynamic sealing structure 65 between the purification moving component 6 and the purification furnace base 36 by chlorine.

[0201] In some embodiments, in step S20, suction is provided to the exhaust gas discharge channel, and the chlorine gas in the first reaction subspace 301 is forced into the exhaust gas discharge channel by the pressure difference and discharged outward, thereby accelerating the departure of chlorine gas from the first reaction subspace 301, improving the reaction between lanthanide chloride and oxygen, and further preventing the chlorine gas flowing out of the molten salt container 1 from corroding the purification moving component 6 and the dynamic sealing structure 65. Suction can be provided to the exhaust gas discharge channel using a suction device.

[0202] In some embodiments, in step S50, the rate at which the molten salt container 1 moves from the second reaction subspace 302 to the first reaction subspace 301 can be 3 mm-15 mm / h. Moving the molten salt container 1 at this rate range prevents strontium chloride and cesium chloride from failing to accumulate in the chloride molten salt in the second reaction subspace 302 due to the container moving too quickly, thus ensuring the removal of strontium chloride and cesium chloride. Simultaneously, moving the molten salt container 1 at this rate range also avoids prolonged purification time due to the container moving too slowly, which is beneficial for ensuring purification efficiency.

[0203] Embodiments of this application also provide a method for removing impurity components from molten chloride salt, the impurity components including lanthanide chlorides, strontium chloride, and cesium chloride. The method includes the following steps: S1, heating the molten chloride salt and supplying oxygen to the molten chloride salt, so that the lanthanide chlorides in the molten chloride salt react with the oxygen to form lanthanide oxide precipitates and chlorine gas; S2, providing a first temperature environment and a second temperature environment, the temperature of the first temperature environment being lower than the melting point of the molten chloride salt, and the temperature of the second temperature environment being higher than the melting point of the molten chloride salt; S3, placing the molten chloride salt into the second temperature environment and moving the molten chloride salt to the first temperature environment at a preset rate, so that the molten chloride salt entering the lower temperature first temperature environment gradually solidifies, allowing strontium chloride and cesium chloride to accumulate in the temporarily unsolidified molten chloride salt and eventually separate from the molten chloride salt.

[0204] In some embodiments, the preset speed can be 3mm-15mm / h.

[0205] The method provided in the embodiments of this application, after heating the chloride molten salt and introducing oxygen to form lanthanide oxide precipitates from the lanthanide chlorides, allows the chloride molten salt to be transferred to a second temperature environment without removing the lanthanide oxide precipitates from the chloride molten salt. By transferring the chloride molten salt from the second temperature environment to the first temperature environment, strontium chloride and cesium chloride can be removed, thereby improving the purification efficiency of impurity components in the chloride molten salt and reducing purification time.

[0206] In some embodiments, the above-described method for removing impurity components from chloride molten salt can be implemented using the molten salt purification device 100 provided in any embodiment of this application; wherein, the first reaction subspace 301 provides a first temperature environment, and the second reaction subspace 302 provides a second temperature environment.

[0207] In some embodiments, during step S1, chlorine is removed while oxygen is supplied to the chloride molten salt. In such embodiments, removing the chlorine generated from the reaction of lanthanide chloride with oxygen facilitates the continued reaction of lanthanide chloride with oxygen and prevents chlorine from corroding the purification moving component 6 and the dynamic sealing structure 65.

[0208] The method for removing impurity components from chloride molten salts according to this application is described below with reference to specific embodiments.

[0209] ① A suction force is provided to the container body 711 by the molten salt suction component 72, so that the chloride molten salt flows into the container body 711; the moving component 743 drives the container holding component 73 and the five molten salt containers 1 held therein to move so that one of the molten salt containers 1 is aligned with the liquid outlet 712; then, the control valve 713 is opened and the opening degree of the control valve 713 is adjusted so that the chloride molten salt can flow into the molten salt container 1 at a set flow rate, and the control valve 713 is closed after a predetermined time; then, the rotating component 742 drives the five molten salt containers 1 to rotate so that the chloride molten salt can flow into the remaining four molten salt containers 1. At this time, the chloride molten salt solidifies into chloride salt due to the temperature drop; then, the moving component 743 moves away from the container body 711 to below the container body 711 so that the lifting equipment can lift it.

[0210] ② The furnace cover 32 is driven to rise and rotate by the furnace cover movement mechanism 8 to open the top opening 303. The container holding assembly 73 and the five molten salt containers 1 it holds are placed into the reaction space 30 by the hoisting equipment, and the container holding assembly 73 is made to cooperate with the purification moving assembly 6. The container holding assembly 73 is moved to the first reaction subspace 301. Then, the furnace cover 32 is driven to rotate by the furnace cover movement mechanism 8 to above the top opening 303, and then the furnace cover 32 is driven to fall to close the top opening 303.

[0211] ③ Start heating the first reaction subspace 301. After the chloride salt in the molten salt container 1 melts back into chloride molten salt, use the drive 223 to drive multiple oxygen supply pipes 21 to descend so that each oxygen supply pipe 21 is inserted into a molten salt container 1. Then, continue heating the first reaction subspace 301 and adjust the set temperature of the first heating element 3113 according to the temperature measured by the first space temperature measuring element 33 so that the temperature of the first reaction subspace 301 reaches the expected temperature. Then, oxygen is introduced into the molten salt container 1 through the oxygen supply pipes 21 to carry out the reaction.

[0212] ④ After the reaction is completed, the driving component 223 drives multiple oxygen supply pipes 21 to rise and leave the first reaction subspace 301; then, the second reaction subspace 302 is heated, and the purification moving component 6 moves each molten salt container 1 to the second reaction subspace 302; during the heating of the second reaction subspace 302, the temperature of the second reaction subspace 302 is measured by the second space temperature measuring component 34, and the set temperature of the second heating component 3123 is adjusted so that the temperature of the second reaction subspace 302 is not lower than the expected temperature of the melting point of the chloride molten salt (for example, 350°C). The first reaction subspace 301 is cooled using the cooling element 3114. During the cooling process, the temperature of the first reaction subspace 301 is measured using the first space temperature measuring element 33, and the temperature of the isolation channel 31240 is measured using the channel temperature measuring element 35. If the temperature of the first reaction subspace 301 is too high, the set temperature of the second heating element 3123 is reduced. When the temperature of the first reaction subspace 301 is not higher than the expected temperature of the melting point of the chloride molten salt (e.g., 270°C), the molten salt container 1 is moved from the second reaction subspace 302 to the first reaction subspace 301 at a speed of 3 mm-15 mm / h (e.g., 5 mm / h) using the purification moving component until all the substances in the molten salt container 1 are solidified.

[0213] ⑤ The furnace cover movement mechanism 8 drives the purification furnace cover 32 to rise and rotate until the top opening 303 is opened; then, the purification moving component 6 moves the upper surface of the hoisting fitting 734 of the container holding component 73 to about 100mm above the top opening 303, and the hoisting equipment removes the container holding component 73 and the molten salt container 1 it holds, thus completing the removal of impurity components in the chloride molten salt.

[0214] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0215] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A molten salt purification device for removing impurity components from chloride molten salt, said impurity components including lanthanide chlorides, strontium chloride, and cesium chloride, characterized in that, The molten salt purification equipment includes: A container holding assembly for holding a plurality of molten salt containers, wherein the chloride molten salt is contained in the molten salt containers; A purification furnace body is configured to form a reaction space for accommodating the containment holding assembly and an exhaust gas passage communicating with the reaction space, and the purification furnace body is configured to be able to adjust the temperature of the reaction space. An oxygen supply component is provided for supplying oxygen to the molten salt containment to react with lanthanide chlorides in the chloride molten salt within the molten salt containment to form lanthanide oxide precipitates and chlorine gas; An exhaust gas discharge component, connected to the exhaust gas discharge channel, is used to discharge chlorine gas that has entered the exhaust gas discharge channel to the outside. The purification moving component is configured to provide support and positioning for the container holding component and to move the container holding component in the reaction space so that the oxygen supply component can supply oxygen to the molten salt container; The purification furnace body includes a purification shell and a heat insulation component. The heat insulation component is disposed inside the purification shell and forms the reaction space. The thermal insulation component includes a first thermal insulation cover and a second thermal insulation cover disposed opposite to each other, and a lateral thermal insulation component disposed between the first thermal insulation cover and the second thermal insulation cover; The lateral insulation component includes: a first side insulation component, a second side insulation component, and a space isolation insulation component disposed between the first side insulation component and the second side insulation component; the space isolation insulation component is spliced ​​and cooperated with the first side insulation component and the second side insulation component to divide the reaction space into a first reaction subspace and a second reaction subspace; The space isolation insulation component forms an isolation channel, allowing the purification moving component to move the containing component between the first reaction subspace and the second reaction subspace.

2. The molten salt purification equipment according to claim 1, characterized in that, The purification furnace body also includes: A heating assembly for heating the reaction space; The exhaust gas discharge channel is formed between the purification shell and the insulation component, located radially outside the insulation component.

3. The molten salt purification equipment according to claim 2, characterized in that, The purification housing includes a first cover and a second cover disposed opposite to each other, and a lateral cylindrical component connecting the first cover and the second cover; The first cover is provided with an oxygen-contacting through hole for the oxygen supply component to enter the reaction space; The second cover is provided with a movable mating through hole for the purification moving component to enter the reaction space and an exhaust gas discharge through hole for connecting the exhaust gas discharge channel and the exhaust gas discharge component.

4. The molten salt purification equipment according to claim 3, characterized in that, The first heat-insulating cover is disposed on the first cover, the second heat-insulating cover is disposed on the second cover, and the lateral heat-insulating component is disposed on the lateral cylinder; There is an airflow channel between the first heat-insulating cover and the side heat-insulating component, and the reaction space is connected to the exhaust gas discharge channel only through the airflow channel.

5. The molten salt purification equipment according to claim 4, characterized in that, Also includes: A suction element is used to provide suction force to the exhaust gas discharge element so that the chlorine gas can be quickly discharged from the reaction space.

6. The molten salt purification equipment according to claim 4, characterized in that, The lateral cylindrical component includes a first cylindrical component and a second cylindrical component detachably connected to the first cylindrical component; the first cylindrical component is detachably connected to the first cover component, and the second cylindrical component is detachably connected to the second cover component; The first side insulation component is disposed on the first cylindrical component, and the second side insulation component and the space isolation insulation component are disposed on the second cylindrical component; The airflow channel is formed between the first side insulation component and the first insulation cover component; The second side insulation component is spliced ​​and fitted with the second insulation cover component.

7. The molten salt purification equipment according to claim 6, characterized in that, The purification mobile component is configured to maintain the temperature of either the second reaction subspace or the first reaction subspace.

8. The molten salt purification equipment according to claim 7, characterized in that, The purification mobile component includes: A support and positioning part is provided for supporting and positioning the receiving member retaining assembly; A purification moving part is used to drive the support positioning part to move; A movable insulation component is disposed on the purification movable component and is used to insulate the second reaction subspace or the first reaction subspace. A moving drive unit is used to drive the purification moving unit to move.

9. The molten salt purification equipment according to claim 7, characterized in that, The heating component includes: A first heating element, disposed on the first side insulation element, is used to heat the first reaction subspace so that the temperature of the first reaction subspace is suitable for oxygen to react with lanthanide chlorides in the chloride salt in the molten salt container to form lanthanide oxide precipitates and chlorine gas; The second heating element, disposed on the second side insulation element, is used to heat the second reaction subspace so that the temperature of the second reaction subspace is higher than the melting point of the chloride salt.

10. The molten salt purification equipment according to any one of claims 1-9, characterized in that, The oxygen supply assembly includes: an oxygen supply pipe and an oxygen supply lifting drive for driving the oxygen supply pipe to move up and down, so that the oxygen supply pipe can enter or leave the molten salt container.

11. A method for removing impurity components from chloride molten salt, implemented using the molten salt purification equipment according to any one of claims 6-10, wherein the impurity components include lanthanide chlorides, strontium chloride, and cesium chloride; Its features are, The method includes the following steps: S10. The chloride molten salt is injected into the molten salt container, and the molten salt container is placed into the first reaction subspace; S20. Heat the first reaction subspace and supply oxygen to the molten salt container so that the lanthanide chloride in the chloride molten salt reacts with oxygen to form a precipitate and chlorine gas. S30. Then, the second reaction subspace is heated so that the temperature of the second reaction subspace is higher than the melting point of the chloride molten salt. S40. Move the molten salt container from the first reaction subspace to the second reaction subspace, and cool the first reaction subspace so that the temperature of the first reaction subspace is lower than the melting point of the chloride molten salt. S50. The molten salt container is slowly moved from the second reaction subspace to the first reaction subspace, so that the chloride molten salt entering the first reaction subspace in the molten salt container gradually solidifies, so that the strontium chloride and cesium chloride can be enriched in the chloride molten salt located in the second reaction subspace, and thus finally separate from the chloride molten salt and solidify.

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