Crystallization tower for preparing potassium tert-butoxide

Abstract

The invention belongs to the technical field of potassium tert-butoxide preparation, and particularly discloses a potassium tert-butoxide preparation crystallization tower which comprises a crystallization tower body, the lower portion of one side of the crystallization tower body is connected with an air inlet pipe, the upper portion of one side of the crystallization tower body is connected with a liquid conveying assembly, and the lower portion of the inner wall of the crystallization tower body is connected with a collecting assembly. According to the crystallization tower disclosed by the invention, crystals and a solution falling in the crystallization tower can be collected through the arranged collection assembly, a mother solution can be separated from the crystals, the mother solution can be recycled, waste of a solvent and raw materials is reduced, and the crystallization tower is environment-friendly and energy-saving. Meanwhile, residual crystals and solution on the inner wall of the crystallization tower can be conveniently collected and treated through the cleaning assembly, and the residual crystals and solution on the inner wall of the crystallization tower can be prevented from corroding or abrading equipment, so that the service life of the equipment is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of potassium tert-butoxide preparation, and particularly relates to a crystallization tower for potassium tert-butoxide preparation. Background Art

[0002] Potassium tert-butoxide is an organic compound with the molecular formula C 4 H 9 OK. It is an important organic base with a stronger alkalinity than potassium hydroxide. Due to the inductive effect of (CH 3 ) 3 CO-three methyl groups, it has stronger alkalinity and activity than other potassium alkoxides. Therefore, it is a good catalyst. In addition, as a strong base, potassium tert-butoxide is widely used in organic syntheses such as chemical industry, medicine, and pesticides, such as transesterification, condensation, rearrangement, polymerization, ring opening, and the production of heavy metal ortho esters. Potassium tert-butoxide is the product after the H atom in the OH group of tert-butanol is replaced by a K atom. Potassium tert-butoxide has two types: liquid and solid. Usually, the industrial liquid product is a tert-butanol solution of potassium tert-butoxide, and the product color is light yellow or milky white, slightly turbid, with the potassium tert-butoxide potassium content being 10% - 12%; the solid product is generally white or off-white powder, with the potassium tert-butoxide content being 95% - 97%.

[0003] A tower crystallizer is also called a granulation tower. The solution is sprayed into the tower by a sprayer. During the process of the solution droplets falling to the bottom of the tower, they are cooled due to the vaporization of a part of the solvent in the countercurrent air flow, so crystals are formed. The crystals and the mother liquor flow out automatically or are pumped out for further purification; Currently, during the crystallization process of the solution raw material in the crystallization tower, the solvent is sprayed downward by the sprayer, and more solvents are likely to be sprayed onto the inner wall of the crystallization tower, resulting in crystallization of the solution on the tower wall. Currently, it is not convenient to collect the residual crystals on the tower wall, leading to waste of potassium tert-butoxide during the crystallization process. At the same time, after the crystallization process, it is also not convenient for the staff to clean the inner wall of the tower. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the prior art and propose a crystallization tower for potassium tert-butoxide preparation.

[0005] To achieve the above object, the present invention provides a crystallization tower for the preparation of potassium tert-butoxide, including a crystallization tower body. A gas inlet pipe is connected to the lower part of one side of the crystallization tower body. A liquid infusion assembly is connected to the upper part of one side of the crystallization tower body. A collection assembly is connected to the lower part of the inner wall of the crystallization tower body. The collection assembly includes a connecting cylinder. A support ring is connected to the lower part of the inner wall of the connecting cylinder. Both sides of the upper end of the support ring are connected with cylinders. The upper ends of both cylinders penetrate and extend to the upper end of the connecting cylinder. The upper ends of both cylinders are connected with a moving ring. Both sides of the upper end of the moving ring are slidably connected with moving blocks. Moving grooves are formed at the positions corresponding to the moving blocks on the upper end of the moving ring. The lower ends of both moving blocks slide inside the moving grooves. The upper ends of both moving blocks are connected with a collection cylinder. A cleaning assembly is connected to the upper end of the collection cylinder. A separation assembly is connected to the middle of the lower end of the collection cylinder. An anti-blocking assembly is connected to the lower part of one side of the crystallization tower body.

[0006] In the above technical solution, further, the liquid infusion assembly includes a sprayer. One end of the sprayer penetrates and extends into the crystallization tower body. One end of the sprayer is connected with a three-way pipe. A liquid inlet pipe is connected to the upper end of the three-way pipe. A delivery pipe is connected to the lower end of the three-way pipe. A delivery pump is connected to the lower end of the delivery pipe. The output end of the delivery pump is connected to the lower end of the delivery pipe. The input end of the delivery pump is connected with a connecting pipe. One end of the connecting pipe penetrates and extends into the crystallization tower body.

[0007] In the above technical solution, further, the cleaning assembly includes a scraping ring. The scraping ring is fixed to the upper end of the collection cylinder. Both sides of the upper end of the scraping ring are connected with scraping rods. One side of each of the two scraping rods is in contact with both sides of the inner wall of the crystallization tower body. A material guiding ring is connected to the lower end of the inner wall of the collection cylinder. A sliding cylinder is connected to the upper end of the material guiding ring. An upper part of the inner wall of the sliding cylinder is connected with a sliding block. A screw rod is slidably connected to the inner wall of the sliding block. A sliding groove is formed at the position corresponding to the screw rod on the sliding block. The upper end of the screw rod is connected with a support block. Both sides of the support block are connected with support rods. One end of each of the two support rods is connected with both sides of the upper part of the inner wall of the crystallization tower body.

[0008] In the above technical solution, further, the anti-blocking assembly includes a first driving motor. The output end of the first driving motor is connected with a first gear. One end of the first gear penetrates and extends into the crystallization tower body. One end of the first gear is located inside the connecting cylinder. A second gear is meshed and connected to one side of the first gear. A rotating rod is connected to the inner wall of the second gear. The upper end of the rotating rod is rotatably connected to the lower end of the support ring. The lower end of the rotating rod penetrates and extends to the lower end of the connecting cylinder. A third gear is connected to the lower end of the rotating rod. A toothed ring is meshed and connected to one side of the third gear. A sliding ring is connected to the inner wall of the toothed ring.

[0009] In the above technical solution, further, a guiding block is connected to the upper end of the slip ring, a guiding ring is connected to the lower end of the connecting cylinder corresponding to the two guiding blocks, guiding grooves are formed in the lower end of the guiding ring corresponding to the two guiding blocks, the upper ends of the two guiding blocks are slidably located inside the guiding grooves, a connecting plate is connected to one side of the inner wall of the slip ring, a scraping plate is connected to one side of the upper end of the connecting plate, one side of the scraping plate is in contact with one side of the inner wall of the connecting cylinder, and the other side of the scraping plate is in contact with one side of the outer wall of the collecting cylinder.

[0010] In the above technical solution, further, the separation assembly includes a blanking pipe, a material guiding pipe is sleeved and connected to the lower part of the outer wall of the blanking pipe, the lower end of the material guiding pipe is connected to a fixed cylinder, both ends of the fixed cylinder are respectively connected to the lower parts of both sides of the inner wall of the crystallization tower body, filter cylinders are connected to the middle parts of both sides of the outer wall of the filter cylinder, blanking rings are respectively connected to the outer walls of the plurality of blanking rings, the outer walls of the plurality of blanking rings are respectively connected to the inner wall of the fixed cylinder, and the shape of one side of the blanking ring is arranged in an inclined shape.

[0011] In the above technical solution, further, a second driving motor is connected to one side of the crystallization tower body corresponding to one end of the fixed cylinder, the output end of the second driving motor sequentially penetrates through the crystallization tower body, the fixed cylinder and the filter cylinder and extends into the filter cylinder, a feeding auger is connected to the output end of the second driving motor, one end of the feeding auger is connected to one end of the inner wall of the filter cylinder, discharge pipes are respectively connected to both sides of the lower end of the fixed cylinder, and one ends of the two discharge pipes respectively penetrate and extend to both sides of the crystallization tower body.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The collection assembly provided can facilitate the collection of crystals inside the crystallization tower, enabling the separated crystals and solution, facilitating the subsequent recrystallization processing of the solution, separating the mother liquor from the crystals, further ensuring the purity of the crystals. Through separation and collection, the mother liquor can be recycled, reducing the waste of solvents and raw materials; 2. The cleaning assembly facilitates the collection and treatment of the crystals and solution remaining on the inner wall of the crystallization tower. Cleaning the crystals remaining on the inner wall of the crystallization tower can prevent these crystals from mixing into the subsequent batches of products, thereby improving the purity and quality of the products. At the same time, regularly cleaning the inner wall of the crystallization tower can prevent the crystals and solution remaining on the inner wall of the crystallization tower from corroding or wearing the equipment. Regular cleaning can keep the inside of the equipment clean and flat, reducing the occurrence of corrosion and wear, thereby extending the service life of the equipment; 3. Through the setting of the anti-blocking assembly, not only can the crystals blocking the outer wall of the collecting cylinder be scraped off during use, but also the solution remaining on the inner wall of the connecting cylinder can be scraped and collected, thereby effectively preventing the collecting cylinder from being blocked, ensuring that the solution fluid inside the collecting cylinder can smoothly pass through the filter cylinder, and helping to improve the separation speed of the solution and the crystals; 4. By separating components, crystals of different sizes can be discharged separately, which can reduce the workload of subsequent workers in screening crystals and thus improve the preparation efficiency of potassium tert-butoxide. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the device proposed by the present invention; Figure 2 It is a sectional view of the crystallization tower body proposed by the present invention; Figure 3 It is a schematic diagram of the installation structure of the discharge pipe proposed by the present invention; Figure 4 It is a schematic diagram of the installation structure of the screw proposed by the present invention; Figure 5 It is a schematic diagram of the installation structure of the blanking ring proposed by the present invention; Figure 6 It is a schematic diagram of the installation structure of the slider proposed by the present invention; Figure 7 It is a schematic diagram of the internal structure of the collection cylinder proposed by the present invention; Figure 8 Proposed by the present invention Figure 7 The enlarged structure diagram of A in; Figure 9 Proposed by the present invention Figure 7 The enlarged structure diagram of B in; Figure 10 It is a schematic diagram of the installation structure of the slip ring proposed by the present invention; Figure 11 It is a schematic diagram of the installation structure of the scraper proposed by the present invention.

[0014] In the figure: 1. Crystallization tower body; 2. Inlet air pipe; 3. Atomizer; 4. Three-way pipe; 5. Inlet liquid pipe; 6. Delivery pipe; 7. Delivery pump; 8. Connecting pipe; 9. Connecting cylinder; 10. Support ring; 11. Cylinder; 12. Moving ring; 13. Moving block; 14. Collection cylinder; 15. Scraping ring; 16. Scraping rod; 17. Guide material ring; 18. Sliding cylinder; 19. Slider; 20. Screw; 21. Support block; 22. Support rod; 23. First driving motor; 24. First gear; 25. Second gear; 26. Rotating rod; 27. Third gear; 28. Tooth ring; 29. Slip ring; 30. Guide block; 31. Guide ring; 32. Connecting plate; 33. Scraper; 34. Blanking pipe; 35. Guide pipe; 36. Fixed cylinder; 37. Filter cylinder; 38. Blanking ring; 39. Second driving motor; 40. Feeding auger; 41. Discharge pipe. Detailed Embodiment

[0015] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] As Figures 1-11 shown, a crystallization tower for the preparation of potassium tert-butoxide includes a crystallization tower body 1. A lower part of one side of the crystallization tower body 1 is connected with an air inlet pipe 2. An upper part of one side of the crystallization tower body 1 is connected with a liquid infusion assembly. The liquid infusion assembly includes a sprayer 3. One end of the sprayer 3 extends through and into the crystallization tower body 1. One end of the sprayer 3 is connected with a three-way pipe 4. The upper end of the three-way pipe 4 is connected with a liquid inlet pipe 5. The lower end of the three-way pipe 4 is connected with a delivery pipe 6. The lower end of the delivery pipe 6 is connected with a delivery pump 7. The output end of the delivery pump 7 is connected with the lower end of the delivery pipe 6. The input end of the delivery pump 7 is connected with a connecting pipe 8. One end of the connecting pipe 8 extends through and into the crystallization tower body 1. One end of the air inlet pipe 2 is connected with the output end of a cold air blower. When the cold air blower works, cold air enters the crystallization tower body 1 through the air inlet pipe 2. Through the liquid infusion assembly, the potassium tert-butoxide solution can be delivered into the crystallization tower body 1. A first liquid inlet valve and a second liquid inlet valve are installed on the outer wall of the three-way pipe 4. The potassium tert-butoxide solution is delivered into the three-way pipe 4 through the liquid inlet pipe 5. At this time, the first liquid inlet valve is opened and the second liquid inlet valve is closed. The potassium tert-butoxide solution is delivered into the sprayer 3 through the three-way pipe 4. The solution is evenly sprayed into the crystallization tower body 1 through the sprayer 3. Through the upward flow of the cold air, the falling solution is cooled, causing some of the solution to crystallize. At this time, the crystals and the solution continue to fall and land in the collection cylinder 14. The solution passes through the collection cylinder 14 and falls to the lower end of the inner wall of the crystallization tower body 1. Through the operation of the delivery pump 7, the solution below the crystallization tower body 1 is delivered to the three-way pipe 4 through the connecting pipe 8 and the delivery pipe 6. At this time, the second liquid inlet valve is opened and the first liquid inlet valve is in a closed state. The solution is delivered into the sprayer 3 through the three-way pipe 4. Through the sprayer 3, the solution is continuously sprayed into the crystallization tower body 1, causing the solution to form a crystal state.

[0017] A collection assembly is connected to the lower part of the inner wall of the crystallization tower body 1. The collection assembly includes a connecting cylinder 9. A support ring 10 is connected to the lower part of the inner wall of the connecting cylinder 9. Both sides of the upper end of the support ring 10 are connected with cylinders 11. The upper ends of the two cylinders 11 extend through and above the connecting cylinder 9. The upper ends of the two cylinders 11 are connected with a moving ring 12. Both sides of the upper end of the moving ring 12 are slidably connected with moving blocks 13. Moving grooves are formed at the corresponding positions of the moving blocks 13 on the upper end of the moving ring 12. The lower ends of the two moving blocks 13 slide inside the moving grooves. The upper ends of the two moving blocks 13 are connected with a collection cylinder 14. A cleaning assembly is connected to the upper end of the collection cylinder 14. The middle part of the lower end of the collection cylinder 14 is connected with a separation assembly. The outer wall of the collection cylinder 14 is made of filter material, which can filter the solution. The cylinder 11 can be protected through the connecting cylinder 9 to prevent the cylinder 11 from contacting with the potassium tert-butoxide solution. When the solution falls, part of the solution forms a crystal state through the cold air. Both the solution and the crystals fall into the interior of the collection cylinder 14. At the same time, since the sprayer 3 is likely to spray the solution onto the inner wall of the crystallization tower body 1, when the cold air flows upward, the solution on the inner wall of the crystallization tower body 1 may form a crystal state due to the passing of the cold air. The two cylinders 11 push the moving ring 12 and the collection cylinder 14 upward, and then cooperate with the cleaning component to clean the crystals on the inner wall of the crystallization tower body 1, preventing the crystals from remaining in the interior of the crystallization tower body 1. After cleaning the crystals on the inner wall of the crystallization tower body 1, the separation component can separate and discharge crystals of different sizes, facilitating the subsequent processing of the crystals.

[0018] The cleaning component includes a scraping ring 15, which is fixed to the upper end of the collection cylinder 14. Both sides of the upper end of the scraping ring 15 are connected with scraping rods 16. One side of the two scraping rods 16 is respectively in contact with both sides of the inner wall of the crystallization tower body 1. The lower end of the inner wall of the collection cylinder 14 is connected with a guiding ring 17. The upper end of the guiding ring 17 is connected with a sliding cylinder 18. The upper part of the inner wall of the sliding cylinder 18 is connected with a sliding block 19. The inner wall of the sliding block 19 is slidably connected with a screw rod 20. The sliding block 19 is provided with a sliding groove corresponding to the screw rod 20. The upper end of the screw rod 20 is connected with a support block 21. Both sides of the support block 21 are connected with support rods 22. One end of the two support rods 22 is connected with both sides of the upper part of the inner wall of the crystallization tower body 1; When the two cylinders 11 push the moving ring 12 upward, it drives the moving block 13, the scraping ring 15, the two scraping rods 16 and the collection cylinder 14 upward. When the collection cylinder 14 moves upward, it can push the sliding cylinder 18 and the sliding block 19 upward. The shape of the sliding groove is adapted to the shape of the outer wall of the screw rod 20. Since the screw rod 20 is located inside the sliding groove of the sliding block 19, when the sliding block 19 slides on the outer wall of the screw rod 20, the sliding block 19 rotates on the outer wall of the screw rod 20 at the same time, thereby driving the sliding cylinder 18 and the collection cylinder 14 to rotate. When the collection cylinder 14 rotates, it drives the two moving blocks 13 to slide inside the moving grooves above the moving ring 12, improving the stability of the rotation of the collection cylinder 14. It can drive the scraping ring 15 and the two scraping rods 16 to scrape the inner wall of the crystallization tower body 1, thereby cleaning the crystals remaining on the inner wall of the crystallization tower body 1. At the same time, during the upward movement and rotation of the collection cylinder 14, the residual solution inside the collection cylinder 14 can be thrown out. When the sliding block 19 contacts the lower part of the upper support block 21, the two cylinders 11 stop pushing the moving ring 12 upward. Subsequently, the two cylinders 11 drive the moving ring 12 and the collection cylinder 14 to move downward. When the moving ring 12 moves downward, it can scrape the solution on the inner wall of the crystallization tower body 1 downward, causing the solution to flow downward through the inner wall of the connecting cylinder 9 to the lower part of the crystallization tower body 1.

[0019] One side of the lower part of the crystallization tower body 1 is connected with an anti-blocking component. The anti-blocking component includes a first driving motor 23. The output end of the first driving motor 23 is connected with a first gear 24. One end of the first gear 24 penetrates and extends into the crystallization tower body 1. One end of the first gear 24 is located inside the connecting cylinder 9. One side of the first gear 24 is meshed and connected with a second gear 25. The inner wall of the second gear 25 is connected with a rotating rod 26. The upper end of the rotating rod 26 is rotatably connected with the lower end of the support ring 10. The lower end of the rotating rod 26 penetrates and extends to the lower end of the connecting cylinder 9. The lower end of the rotating rod 26 is connected with a third gear 27. One side of the third gear 27 is meshed and connected with a toothed ring 28. The inner wall of the toothed ring 28 is connected with a sliding ring 29. The upper end of the sliding ring 29 is connected with a guiding block 30. The lower end of the connecting cylinder 9 is connected with a guiding ring 31 corresponding to the two guiding blocks 30. The lower end of the guiding ring 31 is provided with guiding grooves corresponding to the two guiding blocks 30. The upper ends of the two guiding blocks 30 slide inside the guiding grooves. One side of the inner wall of the sliding ring 29 is connected with a connecting plate 32. One side of the upper end of the connecting plate 32 is connected with a scraping plate 33. One side of the scraping plate 33 contacts with one side of the inner wall of the connecting cylinder 9. The other side of the scraping plate 33 contacts with one side of the outer wall of the collecting cylinder 14. When most of the solution crystallizes, the crystals and the solution fall into the collecting cylinder 14. The solution flows downward through the collecting cylinder 14, thereby realizing the separation of the crystals and the solution. At the same time, the crystals are likely to cause blockage of the filter holes on the outer wall of the collecting cylinder 14. The first driving motor 23 drives the first gear 24 to work, thereby meshing and driving the second gear 25, the rotating rod 26 and the third gear 27 to rotate. The third gear 27 meshes and drives the toothed ring 28 to rotate. The toothed ring 28 can drive the sliding ring 29, the connecting plate 32 and the scraping plate 33 to rotate. When the sliding ring 29 rotates, the two guiding blocks 30 slide inside the guiding grooves below the guiding ring 31, which can improve the stability of the sliding ring 29 during rotation. The scraping plate 33 rotates and moves on the inner wall of the connecting cylinder 9 and the outer wall of the collecting cylinder 14. Therefore, the scraping plate 33 can clean the residual solution on the inner wall of the connecting cylinder 9. At the same time, the scraping plate 33 can clean the crystals blocking the filter holes on the outer wall of the collecting cylinder 14, avoiding the blockage of the collecting cylinder 14. The shape of the scraping plate 33 is adapted to the shapes of the inner wall of the connecting cylinder 9 and the outer wall of the collecting cylinder 14, which is convenient for cleaning the inner wall of the connecting cylinder 9 and the outer wall of the collecting cylinder 14.

[0020] The separation component includes a blanking pipe 34. A material guiding pipe 35 is sleeved and connected to the lower part of the outer wall of the blanking pipe 34. The lower end of the material guiding pipe 35 is connected to a fixed cylinder 36. Both ends of the fixed cylinder 36 are respectively connected to the lower parts of both sides of the inner wall of the crystallization tower body 1. The middle parts of both ends of the inner wall of the fixed cylinder 36 are connected to a filter cylinder 37. The two sides and the middle part of the outer wall of the filter cylinder 37 are all connected with blanking rings 38. The outer walls of multiple blanking rings 38 are respectively connected to the inner wall of the fixed cylinder 36. One side of the blanking ring 38 is inclined. A second driving motor 39 is connected to one side of the crystallization tower body 1 corresponding to one end of the fixed cylinder 36. The output end of the second driving motor 39 sequentially penetrates through the crystallization tower body 1, the fixed cylinder 36 and the filter cylinder 37 and extends into the interior of the filter cylinder 37. The output end of the second driving motor 39 is connected to a feeding auger 40. One end of the feeding auger 40 is connected to one end of the inner wall of the filter cylinder 37. Both sides of the lower end of the fixed cylinder 36 are connected with discharge pipes 41. One ends of the two discharge pipes 41 respectively penetrate and extend to both sides of the crystallization tower body 1; The lower end of the blanking pipe 34 is inserted into the interior of the material guiding pipe 35. One end of the material guiding pipe 35 is inclined to facilitate the entry of crystals into the interior of the filter cylinder 37. The number of the blanking rings 38 is four groups. One side of the blanking ring 38 is inclined. A blanking valve is connected to the middle part of the outer wall of the blanking pipe 34. After the solution is crystallized, the crystals are accumulated inside the collection cylinder 14. When the collection cylinder 14 moves downward to a suitable position, at this time, the lower end of the blanking pipe 34 is inserted into one end of the material guiding pipe 35. By opening the blanking valve at the blanking pipe 34, the crystals inside the collection cylinder 14 are discharged through the blanking pipe 34 under the guiding of the guiding ring 17. The crystals are conveyed to the interior of the material guiding pipe 35 through the blanking pipe 34, and then the material is conveyed to the interior of the filter cylinder 37 through the material guiding pipe 35. First filter holes are formed on one side of the outer wall of the filter cylinder 37, and second filter holes are uniformly formed on the other side of the outer wall of the filter cylinder 37. The second driving motor 39 drives the feeding auger 40 to rotate. Furthermore, the feeding auger 40 can convey the crystals inside the filter cylinder 37 to one side. The smaller crystals fall into the interior of the fixed cylinder 36 through the first filter holes on one side of the outer wall of the filter cylinder 37. The two blanking rings 38 on one side of the outer wall of the filter cylinder 37 can guide the smaller crystals to one of the discharge pipes 41. The feeding auger 40 drives the larger crystals to be conveyed to one side inside the filter cylinder 37. The larger crystals fall into the interior of the fixed cylinder 36 through the second filter holes. The two blanking rings 38 corresponding to the second filter holes on the outer wall of the filter cylinder 37 can guide the larger crystals to the other discharge pipe 41. Furthermore, the separation treatment of crystals of different sizes can be realized.

[0021] Working principle: When using this device, potassium tert-butoxide solvent enters the inside of the tee 4 through the liquid inlet pipe 5. Subsequently, the solution enters the inside of the sprayer 3 through the tee 4, and the solvent is evenly sprayed into the inside of the crystallization tower body 1 through the sprayer 3. Cold air enters the inside of the crystallization tower body 1 through the air inlet pipe 2. The cold air inside the crystallization tower body 1 flows upward inside the crystallization tower body 1, and the cold air cools the solution sprayed by the sprayer 3, thereby achieving the effect of cooling the solution. Most of the solution will form crystals after contacting the cold air. Then, the crystals and a small amount of the solution flow downward, and the crystals and the solution can be collected through the collection cylinder 14. When the solution is being collected, since the collection cylinder 14 is provided in a filter mesh shape, the solution flows downward through the collection cylinder 14, while the crystals remain inside the collection cylinder 14. By the operation of the transfer pump 7, the solution flowing into the inside of the crystallization tower body 1 is transported to the tee 4 through the connecting pipe 8 and the conveying pipe 6, and the solution is transported into the inside of the sprayer 3 through the tee 4, so that the uncrystallized solution can be continuously sprayed into the inside of the crystallization tower body 1 for continuous crystallization processing. The crystals generated after processing all fall into the collection cylinder 14. During the crystallization processing of the solution, the first driving motor 23 drives the first gear 24 to rotate, so that the second gear 25 drives the rotating rod 26 and the third gear 27 to rotate. Then, the toothed ring 28 drives the sliding ring 29 to rotate following the third gear 27. While the sliding ring 29 rotates, it drives the two guide blocks 30 to slide below the guide ring 31, improving the stability of the rotation of the sliding ring 29. The rotation of the sliding ring 29 can drive the connecting plate 32 and the scraping plate 33 to rotate. Through the scraping plate 33, the outer wall of the collection cylinder 14 and the inner wall of the connecting cylinder 9 can be scraped. This can not only prevent smaller crystals from blocking the filter holes on the outer wall of the collection cylinder 14, but also scrape the solvent remaining on the inner wall of the connecting cylinder 9, avoiding the solution filtered out from the inside of the collection cylinder 14 from remaining on the inner wall of the connecting cylinder 9; After the crystallization treatment of the potassium tert-butoxide solution, two cylinders 11 push the moving ring 12 to move upward. When the moving ring 12 moves upward, it pushes the moving block 13, the collection cylinder 14, the scraping ring 15 and the scraping rod 16 to move upward. When the scraping ring 15 moves upward, it can scrape the crystals remaining on the inner wall of the crystallization tower body 1. The scraped crystals fall into the collection cylinder 14 through the scraping ring 15. At the same time, when the collection cylinder 14 moves upward, it can push the sliding cylinder 18 and the slider 19 to move upward. Since the screw rod 20 is located in the inner sliding groove of the slider 19, when the slider 19 slides on the outer wall of the screw rod 20, the slider 19 rotates on the outer wall of the screw rod 20. The rotation of the slider 19 can drive the sliding cylinder 18 to rotate, and then drive the guiding ring 17 and the collection cylinder 14 to rotate following the sliding cylinder 18. When the collection cylinder 14 rotates, it drives the scraping ring 15 and the scraping rod 16 to rotate, thereby being able to scrape the crystals remaining on the inner wall of the crystallization tower body 1. At the same time, the collection cylinder 14 can collect and process the crystals scraped from the inner wall of the crystallization tower body 1, and when the collection cylinder 14 rotates, it can also throw out the solvent remaining inside the collection cylinder 14; After the upper end of the slider 19 contacts the lower end of the support block 21, the two cylinders 11 pull the moving ring 12 downward, thereby driving the collection cylinder 14 to move downward. The sliding cylinder 18 and the slider 19 move downward, and the slider 19 rotates on the outer wall of the screw rod 20, continuing to drive the collection cylinder 14 to rotate. When moving downward, the moving ring 12 can scrape the solution remaining at the lower part of the inner wall of the crystallization tower body 1. Then, the solution scraped by the moving ring 12 can flow downward along the inner wall of the connecting cylinder 9. When the collection cylinder 14 moves into the connecting cylinder 9, at this time, one side of the collection cylinder 14 contacts one side of the scraper 33, and the feeding pipe 34 is inserted into one end of the material guiding pipe 35. By opening the feeding valve on the outer wall of the feeding pipe 34, the crystals inside the collection cylinder 14 are guided to the feeding pipe 34 through the material guiding ring 17. The crystals are transported to the inside of the filter cylinder 37 through the feeding pipe 34 and the material guiding pipe 35. The second driving motor 39 drives the feeding auger 40 to rotate, and then the feeding auger 40 transports the crystals inside the filter cylinder 37 to one side. When the crystals move to one side inside the filter cylinder 37, the smaller crystals fall into the fixed cylinder 36 through the first filter holes on one side of the outer wall of the filter cylinder 37. The two feeding rings 38 on one side of the outer wall of the filter cylinder 37 can guide the smaller crystals to one of the discharge pipes 41. The feeding auger 40 drives the larger crystals to be transported to one side inside the filter cylinder 37, and the larger crystals fall into the fixed cylinder 36 through the second filter holes. The two feeding rings 38 corresponding to the second filter holes on the outer wall of the filter cylinder 37 can guide the larger crystals to the other discharge pipe 41. Thus, the separation process of crystals of different sizes can be realized, which is convenient for the subsequent processing of potassium tert-butoxide after crystallization.

[0022] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the principles described in the specification are only the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A crystallization tower for preparing potassium tert-butoxide, comprising a crystallization tower body (1), characterized in that: The lower part of one side of the crystallization tower body (1) is connected to an air inlet pipe (2), the upper part of one side of the crystallization tower body (1) is connected to an infusion assembly, the lower part of the inner wall of the crystallization tower body (1) is connected to a collection assembly, the collection assembly comprises a connecting tube (9), the lower part of the inner wall of the connecting tube (9) is connected to a support ring (10), both sides of the upper end of the support ring (10) are connected to cylinders (11), the upper ends of the two cylinders (11) extend through and extend to the upper end of the connecting tube (9), and the upper ends of the two cylinders (11) are connected to A moving ring (12), wherein both sides of the upper end of the moving ring (12) are slidably connected to moving blocks (13), a moving groove is provided at the upper end of the moving ring (12) corresponding to the moving blocks (13), the lower ends of the two moving blocks (13) are located inside the moving groove for sliding, the upper ends of the two moving blocks (13) are connected to a collecting cylinder (14), the upper end of the collecting cylinder (14) is connected to a cleaning component, the middle part of the lower end of the collecting cylinder (14) is connected to a separation component, and the lower part of one side of the crystallization tower body (1) is connected to an anti-blocking component.

2. A crystallization tower for preparing potassium tert-butoxide according to claim 1, characterized in that, The infusion assembly comprises a sprayer (3), one end of the sprayer (3) extends through and into the interior of the crystallization tower body (1), one end of the sprayer (3) is connected to a three-way pipe (4), the upper end of the three-way pipe (4) is connected to a liquid inlet pipe (5), the lower end of the three-way pipe (4) is connected to a delivery pipe (6), the lower end of the delivery pipe (6) is connected to a delivery pump (7), the output end of the delivery pump (7) is connected to the lower end of the delivery pipe (6), the input end of the delivery pump (7) is connected to a connecting pipe (8), and one end of the connecting pipe (8) extends through and into the interior of the crystallization tower body (1).

3. A crystallization tower for preparing potassium tert-butoxide according to claim 1, characterized in that, The cleaning assembly comprises a scraper ring (15), the scraper ring (15) being fixed to the upper end of the collecting tube (14), the upper ends of the scraper ring (15) being connected to scraper rods (16) on both sides, one side of the two scraper rods (16) respectively contacting the inner walls of the crystallization tower body (1) on both sides, the lower end of the inner wall of the collecting tube (14) being connected to a guide ring (17), the upper end of the guide ring (17) being connected to a slide tube (18), the upper part of the inner wall of the slide tube (18) being connected to a slider (19), the inner wall of the slider (19) being slidably connected to a screw rod (20), the slider (19) being provided with a slide groove at a position corresponding to the screw rod (20), the upper end of the screw rod (20) being connected to a support block (21), the two sides of the support block (21) being connected to support rods (22), one end of the two support rods (22) being connected to the upper parts of the inner walls of the crystallization tower body (1) on both sides.

4. A crystallization tower for preparing potassium tert-butoxide according to claim 1, characterized in that, The anti-blocking component comprises a first drive motor (23), the output end of the first drive motor (23) is connected to a first gear (24), one end of the first gear (24) extends through the inside of the crystallization tower body (1), one end of the first gear (24) is located inside the connecting tube (9), one side of the first gear (24) is meshingly connected to a second gear (25), the inner wall of the second gear (25) is connected to a rotating rod (26), the upper end of the rotating rod (26) is rotatably connected to the lower end of the support ring (10), the lower end of the rotating rod (26) extends through the lower end of the connecting tube (9), the lower end of the rotating rod (26) is connected to a third gear (27), one side of the third gear (27) is meshingly connected to a gear ring (28), and the inner wall of the gear ring (28) is connected to a slip ring (29).

5. A crystallization tower for preparing potassium tert-butoxide according to claim 4, characterized in that, The upper end of the slip ring (29) is connected to a guide block (30), and the lower end of the connecting tube (9) is connected to a guide ring (31) at locations corresponding to the two guide blocks (30). A guide groove is formed at the lower end of the guide ring (31) at locations corresponding to the two guide blocks (30). The upper ends of the two guide blocks (30) slide inside the guide groove. A connecting plate (32) is connected to one side of the inner wall of the slip ring (29), and a scraper (33) is connected to one side of the upper end of the connecting plate (32). One side of the scraper (33) contacts one side of the inner wall of the connecting tube (9), and the other side of the scraper (33) contacts one side of the outer wall of the collecting tube (14).

6. A crystallization tower for preparing potassium tert-butoxide according to claim 1, characterized in that, The separation component comprises a feed tube (34), the lower part of the outer wall of the feed tube (34) is sleeved with a guide tube (35), the lower end of the guide tube (35) is connected to a fixed cylinder (36), the two ends of the fixed cylinder (36) are respectively connected to the lower parts of the inner wall of the crystallization tower body (1), the middle parts of the two ends of the inner wall of the fixed cylinder (36) are connected to a filter cylinder (37), the two sides and the middle part of the outer wall of the filter cylinder (37) are connected to feed rings (38), the outer walls of a plurality of feed rings (38) are respectively connected to the inner wall of the fixed cylinder (36), and one side of the feed ring (38) is arranged in an inclined shape.

7. A crystallization tower for preparing potassium tert-butoxide according to claim 6, characterized in that, A second drive motor (39) is connected to one end of the fixed cylinder (36) on one side of the crystallization tower body (1); an output end of the second drive motor (39) passes through the crystallization tower body (1), the fixed cylinder (36) and the filter cylinder (37) in sequence and extends into the interior of the filter cylinder (37); a feed screw (40) is connected to the output end of the second drive motor (39); one end of the feed screw (40) is connected to one end of the inner wall of the filter cylinder (37); both sides of the lower end of the fixed cylinder (36) are connected to discharge pipes (41); one end of the two discharge pipes (41) respectively passes through and extends to both sides of the crystallization tower body (1).

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