Reaction kettle for producing lithium alkyl

Abstract

The utility model relates to a reaction kettle for producing alkyl lithium, the reaction kettle comprises a reaction kettle body and a feeding assembly for feeding metal lithium into the reaction kettle body, the feeding assembly comprises a feeding pipe and a sealing piece, one end of the feeding pipe penetrates into the side wall of the reaction kettle body, and the other end of the feeding pipe is connected with the sealing piece. The end, located on the reaction kettle body, of the feeding pipe is arranged in a sealed mode, the side wall, located on the reaction kettle body, of the feeding pipe is provided with filtering holes, and the sealing piece is used for sealing the end, away from the reaction kettle body, of the feeding pipe. The reaction kettle has the effect that lithium metal can be conveniently put into the reaction kettle.

Description

Technical Field

[0001] The present application relates to the field of chemical equipment, and in particular to a reaction kettle for producing alkyl lithium. Background Art

[0002] Alkyl lithium is an alkyl derivative of lithium. There are currently two main production processes for alkyl lithium, one is the white oil dispersed lithium sand process, the other is the metal lithium particle oil-free process. Currently, the metal lithium oil-free process is commonly used to produce alkyl lithium. Alkyl lithium will produce lithium halide during the production process. Direct processing of lithium halide will greatly increase the cost of raw materials.

[0003] At present, a Chinese utility model patent with publication number CN215963491U discloses a lithium particle separation device for an alkyl lithium reactor, comprising a reactor body and a screen structure arranged in the reactor body, wherein the screen structure comprises a fixed frame, a screen and a connecting piece, wherein the fixed frame is arranged in the reactor body, wherein the fixed frame is provided with a plurality of mounting holes, wherein mounting grooves are arranged around the mounting holes, and wherein the screen is arranged in the mounting grooves. The utility model has the function of separating metallic lithium from a solution during the separation process of the reactor body, thereby solving the problem of the reuse of metallic lithium, simplifying the subsequent operation steps of the process, and reducing the production cost.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: metallic lithium will be consumed during the reaction process, and metallic lithium needs to be added to the kettle body regularly. The top of the kettle body needs to be opened to add metallic lithium to the kettle body, which is inconvenient to operate and results in low working efficiency of the reactor. Utility Model Content

[0005] In order to facilitate the introduction of metallic lithium into a reactor, the present application provides a reactor for producing alkyl lithium.

[0006] The present application provides a reactor for producing alkyl lithium, which adopts the following technical solution:

[0007] A reactor for producing alkyl lithium comprises a reactor body and a feeding assembly for feeding metallic lithium into the reactor body, wherein the feeding assembly comprises a feeding pipe and a sealing member, one end of the feeding pipe penetrates the side wall of the reactor body, the feeding pipe is located at one end of the reactor body and is sealed, a filtering hole is provided on the side wall of the reactor body, and the sealing member is used to seal the end of the feeding pipe away from the reactor body.

[0008] By adopting the above technical solution, before the reactor needs to react, the staff puts metallic lithium into the feeding tube. Since one end of the feeding tube is sealed, the metallic lithium cannot escape from the feeding tube. The filter holes on the feeding tube are used for the metallic lithium to contact and react with the materials in the reactor. The seal is used to seal the end of the feeding tube away from the reactor body, thereby reducing the escape of gas in the reactor body and ensuring the stability of the air pressure in the reactor body.

[0009] Optionally, the sealing member includes a sealing plate and a sealing cylinder, wherein the sealing plate is slidably connected to the outer wall of the reactor body, the sealing plate is used to abut against one end of the feeding pipe away from the reactor body, and the sealing cylinder is arranged on the reactor body, and is used to drive the sealing plate to move.

[0010] By adopting the above technical solution, when the reactor body needs to be sealed, the staff can start the sealing cylinder, the piston rod of the sealing cylinder extends, and the piston rod of the sealing cylinder drives the sealing plate to move in the direction of the feeding pipe until the sealing plate abuts against the end face of the feeding pipe, and the feeding pipe is sealed to reduce the escape of gas from the feeding pipe when the reactor body is reacting materials. The sealing structure is simple and easy for the staff to operate.

[0011] Optionally, the sealing plate is slidably connected to the outer wall of the reactor body in the vertical direction, and the sealing member also includes a limit plate, which is arranged on the outer wall of the reactor body, and the limit plate is used to abut against the end surface of the sealing plate facing away from the feeding pipe, and the sealing plate is provided with a guiding slope for facilitating entry between the sealing plate and the feeding pipe.

[0012] By adopting the above technical solution, the sealing plate slides in the vertical direction, reducing the interference of the sealing plate when the staff feeds the feed pipe. Also, because the sealing plate slides in the vertical direction, the sealing plate's abutment force on the feed pipe is insufficient. When the internal air pressure of the reactor body is too high, the sealing plate may easily detach from the feed pipe. Therefore, the limiting plate is used to abut the end of the sealing plate away from the feed pipe. The limiting plate reduces the occurrence of the sealing plate detaching from the feed pipe, and the guiding inclined surface facilitates the sealing plate to enter between the feed pipe and the limiting plate.

[0013] Optionally, the feeding pipe includes a first tube and a second tube, the first tube is horizontally arranged, the first tube penetrates the feeding assembly, the second tube is located in the reactor body, one end of the second tube is arranged on the end of the first tube located in the reactor body, the other end of the second tube is sealed, the height of the other end of the second tube is lower than the height of the first tube, and the outer side wall of the second tube is provided with the filter hole.

[0014] By adopting the above technical solution, when the staff puts metallic lithium into the feeding tube, the material enters the second tube through the first tube. Since the height of the end of the second tube away from the first tube is lower than that of the first tube, the metallic lithium moves toward the end of the second tube away from the first tube under the action of gravity, thereby increasing the amount of metallic lithium that the feeding tube can carry and increasing the amount of material in the reactor body that can react with metallic lithium.

[0015] Optionally, the feeding assembly also includes a rotating member for driving the first tube to rotate around the axis direction of the first tube, the rotating member includes a first rotating gear ring and a second rotating gear ring, the first rotating gear ring is sleeved on the first tube, the second rotating gear ring is rotatably connected to the outer wall of the reactor body, and the first rotating gear ring is meshed with the second rotating gear ring.

[0016] By adopting the above technical solution, impurities will be generated after long-term use of metallic lithium, and the metallic lithium in the feeding tube needs to be cleaned regularly. The staff can rotate the second rotating gear ring, and the second rotating gear ring will drive the first rotating gear ring to rotate, and the first rotating gear ring will drive the first tube to rotate, and the first tube will drive the second tube to rotate. When the height of the end of the second tube away from the first tube is higher than that of the first tube, the metallic lithium and impurities move toward the first tube under the action of gravity, which is convenient for the staff to clean the impurities in the feeding tube.

[0017] Optionally, the feeding assembly is also provided with a locking member for limiting the rotation of the second rotating gear ring, the locking member includes a locking gear, a worm wheel and a worm, the locking gear is rotatably connected to the outer wall of the reactor body, the locking gear is meshed with the second rotating gear ring, the worm wheel is arranged on the locking gear, the worm is rotatably connected to the outer wall of the reactor body, and the worm is meshed with the worm wheel.

[0018] By adopting the above technical solution, when the staff needs to rotate the feeding pipe, the staff can rotate the worm, the worm drives the worm wheel to rotate, the worm wheel drives the locking gear to rotate, the locking gear drives the second rotating gear ring to rotate, the second rotating gear ring drives the first rotating gear ring to rotate, and the first rotating gear ring can drive the first pipe to rotate. The worm gear has a self-locking effect. When cleaning impurities in the feeding pipe, the locking piece can keep the height of the second pipe away from the first pipe always higher than the first pipe.

[0019] Optionally, the locking member further comprises a limiting column, a circular arc groove is formed on the locking gear, the circular arc groove is coaxially arranged with the locking gear, the limiting column is arranged on the outer side wall of the reactor body, and the limiting column is slidably located in the circular arc groove.

[0020] By adopting the above technical solution, since the second tube is located inside the reactor body, it is difficult for the staff to observe the state of the second tube. Therefore, the rotation angle of the locking gear can be limited by the limiting column. The rotation angle of the locking gear is limited, and the rotation angle of the feeding tube is limited by the linkage of the locking gear, the first rotating gear ring and the second rotating gear ring. Therefore, the staff can determine the state of the second tube according to the position of the limiting column in the arc groove.

[0021] Optionally, a plurality of feeding pieces are arranged on the outer side wall of the reactor body, and the plurality of feeding components are distributed along the circumference of the reactor body.

[0022] By adopting the above technical solution, a plurality of feeding pieces enable the material in the reactor body to react with metallic lithium at multiple locations, thereby improving the reaction speed of the reactor.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The feeding tube is used to contact and react the metallic lithium with the material in the reactor body, and the seal is used to seal the end of the feeding tube away from the reactor body to reduce the escape of gas from the feeding tube;

[0025] 2. The rotating part is used to drive the feeding pipe to rotate, so that the impurities after the reaction move towards the first pipe under the action of gravity, which is convenient for the staff to clean it regularly;

[0026] 3. The locking piece is used to limit the free rotation of the feeding pipe, making it easier for the staff to control the feeding pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a reactor used to produce alkyl lithium.

[0028] Figure 2 yes Figure 1 The cross-sectional view of the reactor body is used to show the structural diagram of the stirring component and the feeding component.

[0029] Figure 3 yes Figure 1 The cross-sectional view of the reactor is used to show the matching relationship between the feeding pipe and the rotating parts.

[0030] Figure 4 yes Figure 1 Schematic diagram of the structure of the locking part.

[0031] 1. Reactor body; 11. Feed pipe; 12. Discharge pipe; 13. Control valve; 14. Cavity; 2. Feeding assembly; 21. Feeding pipe; 211. First pipe; 212. Second pipe; 213. Filter hole; 22. Sealing member; 221. Sealing plate; 222. Sealing cylinder; 223. Limiting plate; 224. Slip ring; 225. Guide ramp; 23. Rotating member; 231. First rotating gear ring; 232. Second rotating gear ring; 24. Locking member; 241. Locking gear; 242. Worm wheel; 243. Worm; 244. Rotating disk; 245. Limiting column; 246. Arc groove; 3. Stirring assembly; 31. Stirring motor; 32. Stirring shaft; 33. Stirring blade. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The present application embodiment discloses a reactor for producing alkyl lithium. Figure 1 and Figure 2 A reactor for producing alkyl lithium comprises a reactor body 1, a feeding component 2 for feeding metallic lithium into the reactor body 1, and a stirring component 3 for stirring the material. The reactor body 1 is cylindrical, and a cavity 14 is opened inside the reactor body 1. A feed pipe 11 is fixedly provided on the upper end surface of the reactor body 1, and the feed pipe 11 is connected to the cavity 14. A discharge pipe 12 is fixedly provided on the lower end surface of the reactor body 1, and the discharge pipe 12 is connected to the cavity 14. Control valves 13 are fixedly provided on the feed pipe 11 and the discharge pipe 12.

[0034] refer to Figure 1 and Figure 2 The stirring assembly 3 includes a stirring motor 31, a stirring shaft 32 and a stirring blade 33. The stirring motor 31 is fixedly arranged on the upper end surface of the reactor. The stirring shaft 32 is coaxially arranged with the reactor body 1. The upper end surface of the stirring shaft 32 is fixedly arranged on the output shaft of the stirring motor 31. The lower end surface of the stirring shaft 32 penetrates into the reactor body 1. The stirring blade 33 is located in the cavity 14. The stirring blade 33 is coaxially arranged with the stirring shaft 32. The stirring blade 33 is fixedly arranged on the stirring shaft 32.

[0035] refer to Figure 2 and Figure 3The feeding assembly 2 includes four feeding pipes 21, a sealing member 22, a rotating member 23 and a locking member 24. The four feeding pipes 21 are evenly distributed along the circumferential direction of the axis of the reactor body 1. The feeding pipe 21 includes a first pipe 211 and a second pipe 212. The first pipe 211 is horizontally arranged. The length direction of the first pipe 211 is parallel to the radial direction of the reactor body 1. The height of the first pipe 211 is higher than the height of the stirring blade 33. One end of the first pipe 211 penetrates into the reactor body 1. The first pipe 211 is rotatably connected to the reactor body 1. The second pipe 212 is located in the cavity 14. The angle between the length direction of the second pipe 212 and the length direction of the first pipe 211 is 150°. The end of the second pipe 212 away from the first pipe 211 is sealed, and a plurality of filter holes 213 are evenly distributed on the circumference of the second pipe 212.

[0036] refer to Figure 2 and Figure 3 The sealing member 22 includes four sealing plates 221, two sealing cylinders 222, four limiting plates 223 and a sliding ring 224. The four limiting plates 223 correspond to the four sealing plates 221 one by one. The limiting plates 223 are vertically arranged, and the limiting plates 223 are fixedly arranged on the outer wall of the reactor body 1. The sliding ring 224 is slidably connected to the outer wall of the reactor body 1 along the vertical direction. The two sealing cylinders 222 are evenly distributed along the circumferential direction of the axis of the reactor body 1. The cylinder body of the sealing cylinder 222 is fixedly arranged on the reactor body 1. The sealing cylinder 22 2, one end of the piston rod is fixedly arranged on the upper end surface of the sliding ring 224, four sealing plates 221 correspond to the four first tubes 211 one by one, the four sealing plates 221 are evenly distributed along the circumferential direction of the axis of the sliding ring 224, the sealing plates 221 are vertically arranged, the sealing plates 221 are fixedly arranged on the lower end surface of the sliding plate, the end surface of the sealing plate 221 facing the reactor body 1 is used to abut against the end of the first tube 211 away from the reactor body 1, and the lower end surface of the sealing plate 221 and the end surface of the sealing plate 221 away from the reactor body 1 are provided with a guiding inclined surface 225.

[0037] refer to Figure 3 and Figure 4 The rotating member 23 includes four first rotating gear rings 231 and a second rotating gear ring 232. The four first rotating gear rings 231 correspond to the four first tubes 211 one by one. The first rotating gear rings 231 are coaxially arranged with the first tubes 211. The first rotating gear rings 231 are fixedly arranged on the outer side wall of the first tubes 211. The second rotating gear ring 232 is coaxially arranged with the reactor body 1. The second rotating gear ring 232 is rotatably connected to the outer side wall of the reactor body 1. The first rotating gear ring 231 is meshed with the second rotating gear ring 232.

[0038] refer to Figure 3 and Figure 4The locking member 24 includes a locking gear 241, a worm wheel 242, a worm 243, a rotating disk 244 and a limiting column 245. The locking gear 241 is vertically arranged, and the locking gear 241 is rotatably connected to the outer wall of the reactor body 1. The locking gear 241 is meshed with the second rotating gear ring 232. The locking gear 241 is provided with an arc groove 246, and the arc groove 246 is coaxially arranged with the locking gear 241. The arc groove 246 passes through the locking gear 241, and the arc groove 246 is semicircular. The limiting column 245 is fixedly arranged on the outer side wall of the reactor body 1, the limiting column 245 is located in the arc groove 246, the worm wheel 242 is coaxially arranged with the locking gear 241, one end of the worm wheel 242 is fixedly arranged on the rotation axis of the locking gear 241, the worm 243 is vertically arranged, the worm 243 is rotatably connected to the outer side wall of the reactor body 1, the worm 243 is meshed with the worm wheel 242, the rotating disk 244 is coaxially arranged with the worm 243, and the rotating disk 244 is fixedly arranged on the upper end surface of the worm 243.

[0039] The implementation principle of a reactor for producing alkyl lithium in an embodiment of the present application is as follows: a worker puts metallic lithium into a second tube 212 through a first tube 211. Since the second tube 212 is tilted relative to the reactor body 1, the metallic lithium moves toward the lowest point of the second tube 212 under the action of gravity. At this time, the metallic lithium cannot escape from the feeding tube 21. Then the worker can use a sealing cylinder 222, and the piston rod of the sealing cylinder 222 is extended. The sealing cylinder 222 drives the sliding ring 224 to move vertically downward. The sliding plate brings the sealing plate 221 to abut against the end of the first tube 211 away from the reactor body 1. The limiting plate 223 is used to keep the sliding plate abutting against the first tube 211, thereby achieving the sealing of the reactor body 1. Then the reactor body 1 can react with the material.

[0040] When the reactor body 1 needs to regularly clean the impurities produced by the metallic lithium, the staff then starts the sealing cylinder 222, the piston rod of the sealing cylinder 222 contracts, the sliding ring 224 moves vertically upward, and the sliding ring 224 drives the sealing plate 221 away from the first tube 211. The staff can rotate the rotating disk 244, the rotating disk 244 drives the worm 243 to rotate, the worm 243 drives the worm wheel 242 to rotate, and the worm wheel 242 drives the locking gear 241 to rotate. Under the cooperation of the arc groove 246 and the limiting column 245, the locking gear 241 rotates 180 degrees, the locking gear 241 drives the second rotating gear ring 232 to rotate, and the second rotating gear ring 232 drives the first rotating gear ring 231 to rotate 180 degrees. At this time, the end of the second tube 212 away from the first tube 211 is higher than the first tube 211, and the metallic lithium and impurities move toward the first tube 211 under the action of gravity, and the staff can take the impurities out of the first tube 211.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A reactor for producing alkyl lithium, characterized in that: The invention comprises a reactor body (1) and a feeding assembly (2) for feeding metallic lithium into the reactor body (1), wherein the feeding assembly (2) comprises a feeding pipe (21) and a sealing member (22), wherein one end of the feeding pipe (21) penetrates into the side wall of the reactor body (1), the feeding pipe (21) is located at one end of the reactor body (1) and is sealed, a filtering hole (213) is provided on the side wall of the reactor body (1), and the sealing member (22) is used to seal the end of the feeding pipe (21) that is away from the reactor body (1).

2. A reactor for producing alkyl lithium according to claim 1, characterized in that: The sealing member (22) comprises a sealing plate (221) and a sealing cylinder (222); the sealing plate (221) is slidably connected to the outer wall of the reactor body (1); the sealing plate (221) is used to abut against an end of the feeding pipe (21) away from the reactor body (1); the sealing cylinder (222) is arranged on the reactor body (1); and the sealing cylinder (222) is used to drive the sealing plate (221) to move.

3. A reactor for producing alkyl lithium according to claim 2, characterized in that: The sealing plate (221) is slidably connected to the outer wall of the reactor body (1) in the vertical direction. The sealing member (22) further comprises a limit plate (223). The limit plate (223) is arranged on the outer wall of the reactor body (1). The limit plate (223) is used to abut against the end surface of the sealing plate (221) facing away from the feeding pipe (21). The sealing plate (221) is provided with a guiding inclined surface (225) for facilitating entry between the sealing plate (221) and the feeding pipe (21).

4. A reactor for producing alkyl lithium according to claim 1, characterized in that: The feeding pipe (21) comprises a first pipe (211) and a second pipe (212); the first pipe (211) is arranged horizontally, the first pipe (211) penetrates the feeding assembly (2), the second pipe (212) is located in the reactor body (1), one end of the second pipe (212) is arranged on one end of the first pipe (211) located in the reactor body (1), the other end of the second pipe (212) is sealed, the height of the other end of the second pipe (212) is lower than the height of the first pipe (211), and the outer side wall of the second pipe (212) is provided with the filtering hole (213).

5. A reactor for producing alkyl lithium according to claim 4, characterized in that: The feeding assembly (2) further comprises a rotating member (23) for driving the first tube (211) to rotate around the axis of the first tube (211); the rotating member (23) comprises a first rotating gear ring (231) and a second rotating gear ring (232); the first rotating gear ring (231) is sleeved on the first tube (211); the second rotating gear ring (232) is rotatably connected to the outer wall of the reactor body (1); the first rotating gear ring (231) is meshed with the second rotating gear ring (232).

6. A reactor for producing alkyl lithium according to claim 5, characterized in that: The feeding assembly (2) is further provided with a locking member (24) for limiting the rotation of the second rotating gear ring (232); the locking member (24) comprises a locking gear (241), a worm wheel (242) and a worm (243); the locking gear (241) is rotatably connected to the outer wall of the reactor body (1); the locking gear (241) is meshed with the second rotating gear ring (232); the worm wheel (242) is arranged on the locking gear (241); the worm (243) is rotatably connected to the outer wall of the reactor body (1); the worm (243) is meshed with the worm wheel (242).

7. A reactor for producing alkyl lithium according to claim 6, characterized in that: The locking member (24) further comprises a limiting column (245), a circular arc groove (246) is formed on the locking gear (241), the circular arc groove (246) and the locking gear (241) are coaxially arranged, the limiting column (245) is arranged on the outer side wall of the reactor body (1), and the limiting column (245) is slidably located in the circular arc groove (246).

8. The reactor for producing alkyl lithium according to claim 1, characterized in that: A plurality of feeding pieces are arranged on the outer side wall of the reactor body (1), and a plurality of feeding components (2) are distributed along the circumference of the reactor body (1).

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