A preparation process and device for potassium metal

Abstract

The present invention belongs to the technical field of potassium metal production, and specifically provides a preparation process and device for potassium metal, including a roll crusher. The discharge port of the roll crusher is communicated with the feed port of a dryer through a vibrating feeder. The discharge port of the dryer is communicated with the feed port of a potassium chloride storage tank through a conveying auger. The discharge port of the potassium chloride storage tank is communicated with a first feeding port at the top of a reaction furnace. A second feeding port is also provided at the top of the reaction furnace and is communicated with the discharge port of a sodium metal storage tank. The reaction furnace is a replaceable inner sleeve type reaction furnace. The discharge port of the reaction furnace is communicated with the feed port of a sodium chloride temporary storage tank through a melt pump. An exhaust port is also provided at the top of the reaction furnace, and the exhaust port is communicated with a condensation tower through an air suction fan. The liquid outlet at the bottom of the condensation tower is communicated with the bottom of a clamping groove filled with paraffin oil. By replacing the inner sleeve of the reaction furnace, the stability of the high-temperature reaction between sodium metal and potassium chloride can be ensured. Based on the above-mentioned potassium metal preparation device, the preparation of potassium metal can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of potassium metal production, and particularly to a preparation process and device for potassium metal. Background Art

[0002] Potassium metal is an active metal and has wide applications in industrial production. It can be used to prepare various chemical substances, such as potassium hydroxide, potassium sulfate, etc., and these chemical substances have important uses in fields such as pharmaceuticals, agriculture, and electronics.

[0003] The industrial production of potassium metal is a delicate process. The main method is to react metallic sodium with molten potassium chloride (KCl) under high-temperature conditions in a reaction furnace. The reaction temperature is usually around 850°C. After the reaction, sodium, potassium chloride, and sodium chloride are all in a molten state, while potassium is in a gaseous state, which is conducive to the next step of production.

[0004] This high-temperature reaction method of metallic sodium and potassium chloride has lower production costs, higher safety, and better environmental protection. However, the displacement reaction between metallic sodium and potassium chloride is very violent and is likely to cause corrosion to the reaction furnace, resulting in damage to the furnace body. Summary of the Invention

[0005] In view of the above defects, the present invention provides a preparation process and device for potassium metal, which can replace the inner sleeve of the reaction furnace for the high-temperature reaction of metallic sodium and potassium chloride.

[0006] To achieve the above object, the present invention provides the following technical solution: A preparation process and device for potassium metal, including a roll crusher, the discharge port of the roll crusher is connected to the feed port of a dryer through a vibrating feeder, the discharge port of the dryer is connected to the feed port of a potassium chloride storage tank through a conveying auger, the discharge port of the potassium chloride storage tank is connected to a first feeding port at the top of the reaction furnace, and a second feeding port is also provided at the top of the reaction furnace and is connected to the discharge port of a metallic sodium storage tank;

[0007] The reactor includes a first housing. A driving motor is fixed to the top of the first housing. The output end of the driving motor is equipped with a stirring shaft extending into the interior of the first housing. A number of stirring impellers are provided on the stirring shaft. The upper part of the first housing includes a first inner sleeve, and a first outer jacket is arranged outside the first inner sleeve. One side of the upper part of the first outer jacket is provided with a water outlet communicating with the liquid inlet end of a heat medium heating device. The lower part of the first housing is a second outer jacket half shell. One side of the second outer jacket half shell is hinged with a second housing. The second housing and the second outer jacket half shell are hermetically fixed to form a second outer jacket at the lower part of the reactor. One side of the bottom of the second outer jacket half shell is provided with a water inlet communicating with the liquid outlet end of the heat medium heating device. One side of the upper part of the second outer jacket half shell is provided with a water pipe communicating with the first outer jacket. A second inner sleeve is arranged inside the second outer jacket half shell and the second housing. The top of the second inner sleeve is detachably and hermetically fixed to the bottom of the first inner sleeve. The bottom of the second inner sleeve is provided with an openable reactor discharge port;

[0008] The reactor discharge port is connected to the feed port of a sodium chloride cooling tank through a melt pump. An exhaust port is also provided at the top of the reactor. The exhaust port is connected to a condensation tower through a pipeline provided with a suction fan. The liquid outlet at the bottom of the condensation tower is connected to the bottom of a clamping groove filled with paraffin oil.

[0009] As a further improvement of the present invention, a number of first support plate groups are provided between the second outer jacket half shell and the second inner sleeve, and a number of second support plate groups are provided between the second housing and the second inner sleeve.

[0010] As a further improvement of the present invention, the number of both the first support plate groups and the second support plate groups is 3 groups. Adjacent first support plate groups are arranged at 60° along the circumferential direction inside the second outer jacket half shell 10052, and adjacent second support plate groups are arranged at 60° along the circumferential direction inside the second outer jacket half shell 10052.

[0011] As a further improvement of the present invention, each first support plate group includes 5 vertically arranged first support plates, and each second support plate group includes 5 vertically arranged second support plates.

[0012] As a further improvement of the present invention, a first feed meter is provided at the discharge port of the potassium chloride storage tank, and a second feed meter is provided at the discharge port of the sodium metal storage tank.

[0013] As a further improvement of the present invention, a number of mounting blocks are circumferentially arranged at the top of the second inner sleeve, and the mounting blocks cooperate with mounting grooves opened at the bottom of the first inner sleeve.

[0014] As a further improvement of the present invention, one end of the second housing and the second outer jacket half-shell is connected by a plurality of hinge hinges, and the other end of the second housing and the second outer jacket half-shell is fixedly connected by bolts and nuts.

[0015] As a further improvement of the present invention, a sealing protrusion is provided on the inner side of the connection between the second housing and the second outer jacket half-shell, and a sealing groove matching the sealing protrusion is provided on the inner side of the connection between the second outer jacket half-shell and the second housing.

[0016] A preparation process of metallic potassium, which uses the above-mentioned preparation device of metallic potassium to realize the preparation of metallic potassium. The process specifically includes the following steps:

[0017] S1: Pretreatment of potassium chloride. Use a roller crusher to crush potassium chloride into potassium chloride particles, send the potassium chloride particles into a dryer through a vibrating feeder for drying, and transport the dried potassium chloride particles to a potassium chloride storage tank for temporary storage through a conveying auger;

[0018] S2: Transport the potassium chloride in the potassium chloride storage tank and the metallic sodium in the metallic sodium storage tank into the reaction furnace, and heat the reaction furnace. Potassium chloride and metallic sodium undergo a displacement reaction in the reaction furnace to produce gaseous metallic potassium and molten sodium chloride;

[0019] S3: Gaseous metallic potassium enters the condensation tower from the reaction furnace and is condensed into liquid potassium by the condensation tower. The liquid potassium is discharged from the bottom of the condensation tower into the clamping groove. The clamping groove is filled with paraffin oil to prevent oxidation. After the liquid potassium cools, it is collected;

[0020] S4: The molten sodium chloride is discharged from the reaction furnace and enters the sodium chloride temporary storage tank for cooling.

[0021] Advantages of the present invention:

[0022] In view of the extremely violent reaction between metallic sodium and potassium chloride under high-temperature conditions, a reaction furnace with a conveniently detachable and replaceable inner sleeve is designed to ensure that the main body of the reaction furnace is not corroded, thus effectively guaranteeing production safety. In addition, the inner sleeve of the reaction furnace is divided into upper and lower parts, and only the lower part of the inner sleeve that directly contacts the production raw materials needs to be replaced, which can greatly reduce the production cost. Description of the drawings

[0023] Figure 1 is a schematic diagram of the preparation device of metallic potassium of the present invention;

[0024] Figure 2 is an axonometric schematic diagram of the reaction furnace;

[0025] Figure 3 is a top view schematic diagram of the first housing;

[0026] Figure 4 Yes Figure 3 The schematic A-A sectional view in

[0027] Figure 5 It is a schematic diagram of the internal structure of the reactor;

[0028] Figure 6 It is a second inner sleeve axonometric schematic diagram.

[0029] In the figure: 1 - roll crusher, 2 - vibrating feeder, 3 - dryer, 4 - conveying auger, 5 - potassium chloride storage tank, 6 - sodium metal storage tank, 7 - condensation tower, 8 - clamping groove, 9 - sodium chloride cooling tank, 10 - reactor, 1000 - first feeding port, 1001 - motor mounting seat, 10010 - shaft hole; 1002 - second feeding port, 1003 - exhaust port, 1004 - water outlet; 1005 - first housing, 10050 - first inner sleeve, 10051 - first outer jacket, 10052 - second outer jacket half shell, 10053 - first support plate, 10054 - mounting groove, 10055 - sealing groove, 10056 - sealing projection; 1006 - second housing, 10060 - second support plate, 1007 - hinged hinge, 1008 - reactor discharge port, 1009 - water inlet, 1010 - water pipe, 1011 - second inner sleeve, 10110 - mounting block, 1012 - first fixing plate, 1013 - second fixing plate, 11 - driving motor. Detailed implementation manners

[0030] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only with reference to the directions of the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the present invention. In addition, in all embodiments, the same reference numerals represent the same elements.

[0031] Please refer to Figure 1 、 Figure 2 , the present invention provides a device for preparing potassium metal, including a roll crusher 1, and a vibrating feeder 2 is arranged at the bottom discharge port of the roll crusher 1. A dryer 3 is arranged below one side of the vibrating feeder 2, and the feed inlet of the dryer 3 is communicated with the output end of the vibrating feeder 2. A conveying auger 4 is arranged on one side of the discharge port of the dryer 3, the feed inlet of the conveying auger 4 is communicated with the discharge port of the dryer 3, and the discharge port of the conveying auger 4 is communicated to the potassium chloride storage tank 5.

[0032] As a further explanation of this embodiment, the lumpy potassium chloride is fed into the feed inlet of the roller crusher 1 and can be crushed into small granular form by the roller crusher 1. The granular potassium chloride is conveyed to the dryer 3 by the vibrating feeder 2 and dried by the dryer 3. The dried potassium chloride is conveyed to the potassium chloride storage tank 5 for temporary storage through the conveying auger 4.

[0033] The preparation device of metallic potassium further includes a reaction furnace 10. The top of the reaction furnace 10 is provided with a first feeding port 1000 and a second feeding port 1002. The first feeding port 1000 is communicated with the discharge port of the potassium chloride storage tank 5, and a first feeding meter is arranged at the discharge port of the potassium chloride storage tank 5. The second feeding port 1002 is communicated with the discharge port of the metallic sodium storage tank 6, and a second feeding meter is arranged at the discharge port of the metallic sodium storage tank 6.

[0034] As a further explanation of this embodiment, the amount of potassium chloride entering the reaction furnace 10 can be controlled by the first feeding meter, and the amount of metallic sodium entering the reaction furnace 10 can be controlled by the second feeding meter.

[0035] Please refer to Figure 2 、 Figure 3 、 Figure 4 , the reaction furnace 10 includes a first housing 1005, and the first housing 1005 is divided into upper and lower parts. The upper part of the first housing 1005 includes a dome-shaped first inner sleeve 10050. A motor mounting seat 1001 is provided at the center of the top of the first inner sleeve 10050, and a shaft hole 10010 is opened at the center of the motor mounting seat 1001. A driving motor 11 is mounted on the motor mounting seat 1001. The output end of the driving motor 11 is fixed with a stirring shaft through a coupling. The stirring shaft extends into the interior of the first housing 1005 from the shaft hole 10010, and a plurality of stirring impellers are fixed on the stirring shaft. The first feeding port 1000 is arranged at the top of the first inner sleeve 10050 and on one side of the motor mounting seat 1001, and the second feeding port 1002 is arranged at the top of the first inner sleeve 10050 and on the other side of the motor mounting seat 1001. An exhaust port 1003 is also opened at the top of the first inner sleeve 10050.

[0036] As a further explanation of this embodiment, the driving motor 11 can drive the stirring shaft to rotate, thereby driving the stirring impellers to rotate and stirring and mixing the materials in the reaction tank.

[0037] On the outer side of the first inner sleeve 10050, a first outer jacket 10051 is provided, and the bottom of the first outer jacket 10051 is sealed and partitioned. On one side of the first outer jacket 10051 above, close to the second feeding port 1002, a water outlet 1004 is provided. On one side of the first outer jacket 10051 below, close to the first feeding port 1000, a water pipe 1010 is provided. One end of the water pipe 1010 communicates between the first outer jacket 10051 and the first inner sleeve 10050, and the other end of the water pipe 1010 communicates with the lower part of the first outer housing.

[0038] As a further explanation of this embodiment, a heat medium can be introduced between the first outer jacket 10051 and the first inner sleeve 10050 through the water pipe 1010 to ensure the temperature of the upper part of the reaction furnace 10, and the water outlet 1004 can lead out the heat medium.

[0039] The lower part of the first outer housing is a semi-circular second outer jacket half shell 10052, and the thickness of the second outer jacket half shell 10052 is the same as that of the first outer jacket 10051. Inside the second outer jacket half shell 10052, 3 groups of first support plate groups are provided, and between adjacent first support plate groups, they are arranged at 60° along the circumferential direction inside the second outer jacket half shell 10052. Each group of first support plate groups includes 5 first support plates 10053 from top to bottom. The width of the first support plate 10053 is equal to the distance between the first outer jacket 10051 and the first inner sleeve 10050. At the bottom of the second outer jacket half shell 10052, a water inlet 1009 is provided, and the water inlet 1009 can communicate with a heat medium heating device.

[0040] Please refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 ., on the inner side of the edge of the second outer jacket half shell 10052, a sealing groove 10055 is provided along its circumferential direction. On one side edge of the second outer jacket half shell 10052, a second fixing plate 1013 is provided, and a second threaded fixing hole is provided on the second fixing plate 1013.

[0041] As a further explanation of this embodiment, the second outer jacket half shell 10052 is half of the outer jacket of the lower part of the reaction furnace 10.

[0042] On the other side edge of the second outer jacket half shell 10052, a number of hinge hinges 1007 are provided. One end of the hinge hinge 1007 is fixedly connected to the outside of the second outer jacket half shell 10052, and the other end of the hinge hinge 1007 is fixedly connected to the edge of one side of the outside of the second housing 1006.

[0043] On the other side edge of the second housing 1006, a first fixing plate 1012 is provided. A first threaded fixing hole is formed in the first fixing plate 1012, and the first threaded fixing hole matches the second threaded fixing hole on the second fixing plate 1013.

[0044] On the inner side of the edge of the second housing 1006 along its circumference, a sealing protrusion 10056 is provided. The sealing protrusion 10056 on the second housing 1006 can cooperate with the sealing groove 10055 on the second outer jacket half shell 10052 for sealing, and a sealing washer is also provided between them. Inside the second housing 1006, 3 groups of second support plate groups are also provided. Between adjacent second support plate groups, they are arranged at 60° along the inner circumference of the second outer jacket half shell 10052. Each group of second support plate groups includes 5 second support plates 10060, and the 5 second support plates 10060 are arranged vertically. The width of the second support plate 10060 is the same as that of the first support plate 10053.

[0045] As a further explanation of this embodiment, by matching the first threaded fixing hole and the second threaded fixing hole and fixing them with bolts and nuts, the second outer jacket half shell 10052 and the second housing 1006 can be fixed to form the outer jacket of the lower part of the reaction furnace. At this time, the sealing protrusion 10056 provided on the inner side of the edge of the second housing 1006 cooperates with the sealing groove 10055 on the second outer jacket half shell 10052, and the sealing washer further enhances the sealing performance.

[0046] On the inner side of the bottom of the upper part of the first housing 1005 along the circumference, a plurality of installation grooves 10054 are formed. The installation grooves 10054 are arc-shaped grooves with one side open. The reaction furnace 10 further includes a second inner sleeve 1011. A plurality of installation blocks 10110 matching the installation grooves 10054 are fixedly connected to the top of the second inner sleeve 1011. A reaction furnace discharge port 1008 that can be opened and closed is provided at the bottom of the second inner sleeve 1011. A sealing washer is also provided between the second inner sleeve 1011 and the first housing 1005.

[0047] As a further explanation of this embodiment, insert the installation block 10110 outside the installation groove 10054, and then rotate the second inner sleeve 1011 so that the installation block 10110 rotates along the installation groove 10054 and enters the installation groove 10054 to realize the installation and fixation of the second inner sleeve 1011.

[0048] The furnace body structure of the jacket provided outside the reaction furnace 10 is circularly connected to the heat medium heating device. A melt pump is provided at the bottom of the reaction furnace 10. The feed end of the melt pump is communicated with the reaction furnace discharge port 1008, and the discharge port of the melt pump is communicated to the sodium chloride cooling tank 9.

[0049] An exhaust port 1003 communicating with the interior of the furnace body is also provided at the upper part of the reactor 10, and an industrial-grade suction fan resistant to high temperatures is provided at the exhaust port 1003. The intake end of the suction fan communicates with the exhaust port 1003 of the reactor 10, and the outlet end of the suction fan communicates with the condensation tower 7. A liquid outlet is provided at the bottom of the condensation tower 7, and the liquid outlet communicates with the bottom of the clamping groove 8.

[0050] The preparation process of metallic potassium according to the above metallic potassium preparation device includes:

[0051] S1: Pretreatment of potassium chloride. The potassium chloride is crushed into potassium chloride particles by a roller crusher 1, and the potassium chloride particles are sent into a dryer 3 through a vibrating feeder 2 for drying, and the dried potassium chloride particles are transported to a potassium chloride storage tank 5 for temporary storage through a conveying auger 4.

[0052] S2: The potassium chloride in the potassium chloride storage tank 5 and the metallic sodium in the metallic sodium storage tank 6 are transported into the reactor 10, and the reactor 10 is heated. The potassium chloride and the metallic sodium undergo a displacement reaction in the reactor 10 to produce gaseous metallic potassium and molten sodium chloride.

[0053] S3: The gaseous metallic potassium enters the condensation tower 7 from the reactor 10 and is condensed into liquid potassium by the condensation tower 7. The liquid potassium is discharged from the bottom of the condensation tower 7 into the clamping groove 8. The clamping groove 8 is filled with paraffin oil to prevent oxidation. After the liquid potassium cools down, it is collected.

[0054] S4: The molten sodium chloride is discharged from the reactor 10 and enters a sodium chloride cooling tank 9 for cooling.

[0055] The working principle and usage process of this embodiment:

[0056] During use, the reactor 10 is installed on a bracket. The heat medium can be heated by a heat medium heating device and input between the second outer jacket and the second inner sleeve 1011 at the lower part of the reactor 10, so as to ensure the reaction temperature. At the same time, the heat medium can enter between the first outer jacket 10051 and the first inner sleeve 10050 at the upper part of the reactor 10 through a water pipe 1010 to ensure the temperature at the upper part of the reactor 10 and prevent the temperature at the upper part of the reactor 10 from being too low, which may cause the generated gaseous metallic potassium to condense in the reactor 10 and prevent the product from being output.

[0057] During feeding, the potassium chloride particles and the metallic sodium are all at the lower part of the reactor 10, that is, the reaction takes place in the second inner sleeve 1011. Since the displacement reaction between the metallic sodium and the potassium chloride is very violent, the second inner sleeve 1011, as the direct contact part, is easily corroded and damaged. Therefore, the second inner sleeve 1011 needs to be replaced regularly.

[0058] When replacing, remove the reaction furnace 10 from the bracket and lay it flat. Then open the second housing 1006, remove the drive motor 11 from the motor mounting seat 1001, and move the stirring shaft towards the side of the shaft hole 10010 by dragging the drive motor 11. When the bottom of the stirring shaft enters the first inner sleeve 10050, rotate the second inner sleeve 1011 to move the mounting block 10110 at the top of the second inner sleeve 1011 to the opening of the mounting groove 10054. Then remove the second inner sleeve 1011, install a new second inner sleeve 1011, reinstall the drive motor 11, and seal and fix the second housing 1006 and the first housing 1005 again. Then it can be placed on the bracket and used again.

[0059] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned implementation measures. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A preparation device for metallic potassium, characterized in that, It includes a roll crusher (1). The discharge port of the roll crusher (1) is communicated with the feed port of a dryer (3) through a vibrating feeder (2). The discharge port of the dryer (3) is communicated to the feed port of a potassium chloride storage tank (5) through a conveying auger. The discharge port of the potassium chloride storage tank (5) is communicated to the first feeding port (1000) at the top of a reaction furnace (10). A second feeding port (1002) is also provided at the top of the reaction furnace (10) and is communicated to the discharge port of a sodium metal storage tank (6). The reaction furnace (10) includes a first shell (1005). A driving motor (11) is fixed at the top of the first shell (1005). A stirring shaft extending into the interior of the first shell (1005) is installed at the output end of the driving motor (11). A number of stirring impellers are provided on the stirring shaft. The upper part of the first shell (1005) includes a first inner sleeve (10050). A first outer jacket (10051) is arranged outside the first inner sleeve (10050). A water outlet (1004) is provided on one side of the upper part of the first outer jacket (10051) and is communicated to the liquid inlet end of a heat medium heating device. The lower part of the first shell (1005) is a second outer jacket half shell (10052). A second shell (1006) is hinged to one side of the second outer jacket half shell (10052). The second shell (1006) and the second outer jacket half shell (10052) are hermetically fixed to form a second outer jacket at the lower part of the reaction furnace (10). A water inlet (1009) is provided on one side of the bottom of the second outer jacket half shell (10052) and is communicated to the liquid outlet end of the heat medium heating device. A water pipe (1010) is provided on one side of the upper part of the second outer jacket half shell (10052) and is communicated to the first outer jacket (10051). A second inner sleeve (1011) is arranged inside the second outer jacket half shell (10052) and the second shell (1006). The top of the second inner sleeve (1011) is detachably and hermetically fixed to the bottom of the first inner sleeve (10050). A closable reaction furnace discharge port (1008) is provided at the bottom of the second inner sleeve (1011). The reaction furnace discharge port (1008) is communicated to the feed port of a sodium chloride cooling tank (9) through a melt pump. An exhaust port (1003) is also provided at the top of the reaction furnace (10). The exhaust port (1003) is communicated to a condensation tower (7) through a pipe provided with an air suction fan. The liquid outlet at the bottom of the condensation tower (7) is communicated to the bottom of a clamping groove (8) filled with paraffin oil.

2. The preparation device of metallic potassium according to claim 1, characterized in that, A number of first support plate groups are arranged between the second outer jacket half shell (10052) and the second inner sleeve (1011). A number of second support plate groups are arranged between the second shell (1006) and the second inner sleeve (1011).

3. The preparation device of potassium metal according to claim 2, characterized in that, The number of both the first support plate groups and the second support plate groups is 3. Adjacent first support plate groups are arranged circumferentially inside the second outer jacket half shell (10052) at an angle of 60°. Adjacent second support plate groups are arranged circumferentially inside the second outer jacket half shell (10052) at an angle of 60°.

4. The preparation device of potassium metal according to claim 3, characterized in that, Each set of the first support plate groups includes 5 vertically arranged first support plates (10053), and each set of the second support plate groups includes 5 vertically arranged second support plates (10060).

5. The preparation device of metallic potassium according to claim 1, wherein A first feed meter is provided at the discharge port of the potassium chloride storage tank (5), and a second feed meter is provided at the discharge port of the sodium metal storage tank (6).

6. The potassium metal preparation device according to claim 1, characterized in that A number of mounting blocks (10110) are circumferentially arranged at the top of the second inner sleeve (1011), and the mounting blocks (10110) are matched with the mounting grooves (10054) formed at the bottom of the first inner sleeve (10050).

7. The preparation device of potassium metal according to claim 1, characterized in that One end of the second housing (1006) and the second outer jacket half shell (10052) is connected by a number of hinge hinges (1007), and the other end of the second housing (1006) and the second outer jacket half shell (10052) is fixedly connected by bolts and nuts.

8. The preparation device of potassium metal according to claim 7, characterized in that, A sealing protrusion (10056) is provided on the inner side of the connection between the second housing (1006) and the second outer jacket half shell (10052), and a sealing groove (10055) that matches the sealing protrusion (10056) is provided on the inner side of the connection between the second outer jacket half shell (10052) and the second housing (1006).

9. A preparation process of potassium metal, characterized in that, This process uses the potassium metal preparation device described in any one of claims 1 to 8 to achieve the preparation of potassium metal. This process specifically includes the following steps: S1: Pretreatment of potassium chloride. Use a roll crusher (1) to crush potassium chloride into potassium chloride particles, send the potassium chloride particles to a dryer (3) through a vibrating feeder (2) for drying, and transport the dried potassium chloride particles to a potassium chloride storage tank (5) for temporary storage through a conveying auger (4); S2: Transport the potassium chloride in the potassium chloride storage tank (5) and the sodium metal in the sodium metal storage tank (6) into a reaction furnace (10), and heat the reaction furnace (10). Potassium chloride and sodium metal undergo a displacement reaction in the reaction furnace (10) to produce gaseous potassium metal and molten sodium chloride; S3: Gaseous potassium metal enters the condensation tower (7) from the reaction furnace (10), and is condensed into liquid potassium by the condensation tower (7). The liquid potassium is discharged from the bottom of the condensation tower (7) into a clamping groove (8). The clamping groove (8) is filled with paraffin oil to prevent oxidation. After the liquid potassium cools, it is collected; S4: The molten sodium chloride is discharged from the reaction furnace (10) and enters a sodium chloride cooling tank (9) for cooling.

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