Distillation kettle for aluminum isopropoxide production
By using embedded electric heating tubes, stirring and rolling components in the distillation kettle, the problem of uneven heating of liquids during distillation is solved, and a more stable vapor-liquid balance and higher product purity is achieved.
Patent Information
- Application Number
- CN202421519762.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-28
AI Technical Summary
During the distillation process of the prior art distillation kettle, the liquid close to the heating flake heats up faster, resulting in inconsistent heat exposure of the liquid in the kettle body, which in turn leads to a temperature gradient of the liquid inside the distillation. Uneven heating will cause unstable vapor-liquid equilibrium during the distillation process, which will affect the fractionation effect of the product and the purity of the product.
A distillation kettle for aluminum isopropoxide production is designed, and the structure of embedded electric heating tubes, stirring rods on the first and second rotating shafts, rolling components and condensers is adopted. Through the design of stirring and rolling components, the flow and mixing effects of liquid are enhanced, ensuring that the liquid is heated more uniformly when heated, and the vapor is processed through the condenser.
Through uniform heating and stirring treatment, the problem of uneven heating of the liquid is solved, and the stability of the distillation process and the fractionation effect and purity of the product are improved.
Smart Images
Figure CN222889387U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of distillation and purification, in particular to a distillation kettle for producing aluminum isopropoxide. Background Art
[0002] Aluminum isopropoxide has very strong water absorption and is widely used as a desiccant. At the same time, aluminum hydroxide obtained after hydrolysis can be calcined to prepare aluminum oxide. Therefore, the aluminum isopropoxide hydrolysis process has become the mainstream process for aluminum oxide production. With the increasing requirements of the sapphire and lithium battery industries for high-purity aluminum oxide, high-purity aluminum isopropoxide has become very important as a raw material.
[0003] The distillation kettle of the prior art, such as the utility model patent document with authorization announcement number "CN218474890U" and patent name "Distillation and purification device of aluminum isopropoxide precursor for high-purity pseudo-boehmite", discloses a distillation kettle, including a distillation kettle and a collecting chamber, a stirring shaft is provided inside the distillation kettle, a stirring paddle is provided at the lower part of the stirring shaft, a scraper is also provided on the outer periphery of the stirring shaft, and the scraper is bonded to the inner wall of the distillation kettle, a ceramic heating plate is provided on the outer wall of the distillation kettle, and an insulating layer is provided on the outside of the ceramic heating plate, a feed port is provided at the upper end of the distillation kettle, the upper end of the distillation kettle is connected to a primary condenser through a conveying pipe, the upper end of the distillation kettle is also connected to a secondary condenser, and a partition is vertically fixed inside the collecting chamber.
[0004] In the above patent document, during the distillation process, the liquid near the heating plate heats up faster, resulting in inconsistent heating of the liquid in the kettle, which in turn causes a temperature gradient in the liquid inside the distillation kettle. The uneven heating will cause an unstable vapor-liquid equilibrium during the distillation process, thereby affecting the fractionation effect and purity of the product. Utility Model Content
[0005] The utility model aims to propose a distillation kettle for the production of aluminum isopropoxide in view of the deficiencies in the prior art, so as to solve the technical problem that in the distillation kettle of the prior art mentioned in the background technology, the liquid near the heating plate heats up faster during the distillation process, resulting in inconsistent heating degree of the liquid in the kettle, and then causing a temperature gradient in the liquid inside the distillation kettle. The uneven heating will cause unstable vapor-liquid equilibrium in the distillation process, thereby affecting the fractionation effect of the product and the purity of the product.
[0006] The above technical objectives of the utility model are achieved through the following technical solutions:
[0007] A distillation kettle for producing aluminum isopropoxide, comprising a kettle body with a feed inlet and a discharge outlet, an electric heating tube embedded in the inner wall of the kettle body, a first rotating shaft rotatably arranged inside the kettle body, a plurality of first stirring rods fixedly arranged on the first rotating shaft, a second rotating shaft rotatably arranged inside the kettle body, and the rotation direction of the second rotating shaft is opposite to that of the first rotating shaft, a plurality of second stirring rods are arranged on the second rotating shaft, two tumbling components for tumbling materials are arranged on the second rotating shaft, a motor is fixedly arranged on the outer side of the top of the kettle body, a driving component for driving the first rotating shaft and the second rotating shaft to rotate is arranged on the output end of the motor, a condenser is arranged outside the kettle body, and the condenser is conductively connected to the inside of the kettle body
[0008] Working principle:
[0009] First, the operator guides the liquid to be distilled into the kettle through the feed port, and then the operator starts the motor, which drives the drive assembly, and the drive assembly drives the first rotating shaft and the second rotating shaft to rotate in opposite directions, so that the first stirring rod on the first rotating shaft and the second stirring rod on the second rotating shaft can fully stir the liquid in the kettle, and the tumbling assembly on the second rotating shaft can expand the flow of the liquid inside the kettle. When the operator needs to heat the inside of the kettle, the operator can heat the liquid inside the kettle through the electric heating tube, and the distilled vapor enters the condenser.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] First, a first rotating shaft and a second rotating shaft are provided, and the first stirring rod and the second stirring rod on the first rotating shaft and the second rotating shaft can stir the liquid inside the kettle body, accelerate the flow of the liquid inside the kettle body, and make the liquid heated more evenly.
[0012] Second, a driving assembly is provided, which can drive the first rotating shaft and the second rotating shaft to rotate in opposite directions, so that the liquid can flow in different directions under the stirring action to enhance the mixing effect.
[0013] Third, an electric heating tube is provided, which can heat the liquid inside the kettle body, so as to facilitate the distillation of the liquid inside the kettle body.
[0014] Fourthly, a tumbling assembly is provided, which can further expand the flow range of the liquid inside the kettle body, so that the liquid inside the kettle body is heated more evenly.
[0015] Fifth, a condenser is provided, which can condense the steam distilled in the kettle. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;
[0017] Figure 2 for Figure 1 The enlarged cross-sectional structure diagram at A in the middle;
[0018] Figure 3 for Figure 1 Enlarged cross-sectional view of the structure at B in the middle
[0019] Explanation of the reference numerals in the accompanying drawings: feed port 1, discharge port 2, kettle body 3, electric heating tube 4, first rotating shaft 5, first stirring rod 6, second rotating shaft 7, second stirring rod 8, motor 9, condenser 10, mounting box 11, first rotating rod 12, second rotating rod 13, first bevel gear 14, tumbling paddle 15, first gear 16, ring gear 17, second bevel gear 18, third bevel gear 19, connecting rod 20, telescopic rod 21, scraper rod 22, spring 24, water tray 25, water inlet pipe 26, nozzle 27, air outlet pipe 28, condensation box 29, condensation pipe 30, water inlet 31, water outlet 32, insulation layer 33. DETAILED DESCRIPTION
[0020] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0021] Example:
[0022] like Figure 1 As shown, a distillation kettle for producing aluminum isopropoxide comprises a kettle body 3 with a feed inlet 1 and a discharge port 2, an electric heating tube 4 is embedded in the inner wall of the kettle body 3, and the electric heating tube 4 can heat the liquid inside the kettle body 3 to facilitate the distillation of the liquid inside the kettle body 3, a first rotating shaft 5 is rotatably provided inside the kettle body 3, a plurality of first stirring rods 6 are fixed on the first rotating shaft 5, a second rotating shaft 7 is rotatably provided inside the kettle body 3, and the rotation direction of the second rotating shaft 7 is opposite to that of the first rotating shaft 5, a plurality of second stirring rods 8 are provided on the second rotating shaft 7, and the first stirring rods 6 and the second stirring rods 8 on the first rotating shaft 5 and the second rotating shaft 7 can stir the liquid inside the kettle body 3, accelerate the flow of the liquid inside the body, and make the liquid heated more evenly.
[0023] like Figure 1 and Figure 3 As shown, a hollow connecting rod 20 is fixedly provided on the second rotating shaft 7, and a telescopic rod 21 is slidably inserted into the connecting rod 20. A scraper rod 22 is fixedly provided at the telescopic end away from the end of the connecting rod 20, and the scraper rod 22 is slidably abutted against the inner wall of the kettle body 3. A spring 24 is fixedly provided in the connecting rod 20, and the spring 24 is fixedly connected to the telescopic rod 21. The scraper rod 22 can be pressed against the inner wall of the kettle body 3 through the telescopic rod 21 and the spring 24. The scraper rod 22 can scrape off the material adhered to the inner wall of the kettle body 3, so as to facilitate the cleaning of the material residue on the inner wall of the kettle body 3.
[0024] like Figure 1 and Figure 3As shown, the inner wall of the kettle body 3 is fixedly provided with an internal hollow annular water tray 25 and the gear ring 17 is fixedly provided on the water tray 25, the kettle body 3 is conductively provided with a water inlet pipe 26 and the water inlet pipe 26 is conductively connected to the water tray 25, the water tray 25 is conductively provided with a plurality of nozzles 27 and the nozzles 27 face the inner wall of the kettle body 3, water can flow back into the water tray 25 through the water inlet pipe 26, and the nozzles 27 can spray the water in the water tray 25 to the inner wall of the kettle body 3, so as to cooperate with the scraper rod 22 to clean the residual materials on the inner wall of the kettle body 3. After cleaning, the water and residual materials in the kettle body 3 are discharged to the outside through the discharge port 2.
[0025] like Figure 1 and Figure 2 As shown, the second rotating shaft 7 is provided with two tumbling components for tumbling materials, and the tumbling components include a mounting box 11, a first rotating rod 12, a second rotating rod 13, two first bevel gears 14, a tumbling paddle 15, a first gear 16 and a gear ring 17 with a tooth groove on the inner wall, the mounting box 11 is fixed on the second rotating shaft 7, the first rotating rod 12 is rotatably arranged in the mounting box 11, the second rotating rod 13 is rotatably arranged in the mounting box 11, the two first bevel gears 14 are respectively fixed on the ends of the first rotating rod 12 and the second rotating rod 13 and the two first bevel gears 14 are meshed, the tumbling paddle 15 is fixed on the second rotating rod 13 and ... The paddle 15 is used to tumble the material in the kettle body 3. The two first bevel gears 14 can drive the second rotating rod 13 to rotate when the first rotating rod 12 rotates. The second rotating rod 13 can drive the tumbling paddle 15 to rotate. The rotation of the tumbling paddle 15 can accelerate the up and down flow of the liquid inside the kettle body 3. The first gear 16 is fixedly arranged on the end of the first rotating rod 12 away from the first bevel gear 14. The ring gear 17 is arranged on the inner wall of the kettle body 3 and the first gear 16 is meshed with the inner wall of the ring gear 17. The rotation of the second rotating shaft 7 drives the installation box 11 to rotate. The installation box 11 rotates the first gear 16 to rotate on the ring gear 17, so that the first gear 16 can drive the first rotating rod 12 to rotate.
[0026] like Figure 1 As shown, a motor 9 is fixedly provided on the outer side of the top of the kettle body 3, and a driving assembly for driving the first rotating shaft 5 and the second rotating shaft 7 to rotate is provided on the output end of the motor 9, and the driving assembly includes two second bevel gears 18 and a third bevel gear 19, the first rotating shaft 5 is a hollow structure and the second rotating shaft 7 is penetrated inside the first rotating shaft 5, the two second bevel gears 18 are respectively fixedly provided on the ends of the first rotating shaft 5 and the second rotating shaft 7, and the third bevel gear 19 is fixedly provided on the output end of the motor 9, and the two second bevel gears 18 are respectively meshed with the two sides of the third bevel gear 19, the motor 9 can drive the third bevel gear 19, and the third bevel gear 19 can drive the two second bevel gears 18 to rotate, so that the two second bevel gears 18 respectively drive the first rotating shaft 5 and the second rotating shaft 7 to rotate in different directions.
[0027] like Figure 1As shown, a condenser 10 is provided outside the kettle body 3 and the condenser 10 is conductively connected to the inside of the kettle body 3. An air outlet pipe 28 is conductively provided on the top of the kettle body 3 and the air outlet pipe 28 is conductively connected to the condenser 10. The steam distilled inside the kettle body 3 can enter the condensation pipe 30 of the condensation box 29 through the air outlet pipe 28. The condenser 10 includes a condensation box 29 and a condensation pipe 30. The condensation box 29 is provided outside the kettle body 3 and a water inlet 31 and a water outlet 32 are provided on the condensation box 29. The condensation pipe 30 is provided in the condensation box 29 and the condensation pipe 30 is conductively connected to the air outlet pipe 28. Before condensing the steam in the condensation pipe 30, the operator passes water into the condensation box 29 through the water inlet 31, so that the steam in the condensation pipe 30 exchanges heat with the water outside the condensation pipe 30. A thermal insulation layer 33 is fixedly provided on the outside of the kettle body 3.
[0028] Working principle:
[0029] First, the operator guides the liquid to be distilled into the kettle body 3 through the feed port 1, and then the operator starts the electric heating tube 4, which can heat the liquid inside the kettle body 3. Then the operator starts the motor 9, and the motor 9 drives the third bevel gear 19, and the third bevel gear 19 drives the two second bevel gears 18 to rotate. The rotation of the two second bevel gears 18 respectively drives the first rotating shaft 5 and the second rotating shaft 7 to rotate in opposite directions, so that the first stirring rod 6 on the first rotating shaft 5 and the second stirring rod 8 on the second rotating shaft 7 can stir the liquid inside the kettle body 3, expand the flow of the liquid inside the kettle body 3, and make the liquid inside the kettle body 3 heated more evenly.
[0030] Afterwards, when the second rotating shaft 7 rotates, the first gear 16 on the second rotating shaft 7 can rotate on the ring gear 17, and the rotation of the first gear 16 drives the first rotating rod 12, and the first rotating rod 12 drives the two first bevel gears 14. Under the action of the first bevel gear 14, the second rotating rod 13 rotates to drive the tumbling paddle 15 to rotate, so that the tumbling paddle 15 can further stir the liquid inside the kettle body 3, expand the flow direction and flow range of the liquid, and make the liquid inside the kettle body 3 heated more evenly.
[0031] The steam distilled inside the kettle body 3 is guided to the condenser 30 in the condenser box 29 through the exhaust pipe 28. Then the operator introduces water into the condenser box 29 through the water inlet 31. The steam in the condenser 30 and the water outside the condenser 30 undergo heat exchange, so that the distilled liquid is discharged to the outside through the condenser 30.
[0032] When the operator needs to clean the inside of the kettle body 3, the operator guides water to the water tray 25 through the water inlet pipe 26, and the water in the water tray 25 can be sprayed on the inner wall of the paper kettle body 3 through the nozzle 27. The scraper rod 22 on the second rotating shaft 7 can scrape off the materials remaining on the inner wall of the kettle body 3. Finally, the water used for cleaning and the residual materials are discharged to the outside through the discharge port 2.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A distillation kettle for producing aluminum isopropoxide, characterized in that: The invention comprises a kettle body (3) provided with a feed inlet (1) and a discharge outlet (2), an electric heating tube (4) being embedded in the inner wall of the kettle body (3), a first rotating shaft (5) being rotatably arranged inside the kettle body (3), a plurality of first stirring rods (6) being fixedly arranged on the first rotating shaft (5), a second rotating shaft (7) being rotatably arranged inside the kettle body (3), and the rotation direction of the second rotating shaft (7) being opposite to the rotation direction of the first rotating shaft (5), a plurality of second stirring rods (8) being arranged on the second rotating shaft (7), two tumbling components for tumbling materials being arranged on the second rotating shaft (7), a motor (9) being fixedly arranged on the outer side of the top of the kettle body (3), a driving component for driving the first rotating shaft (5) and the second rotating shaft (7) to rotate being arranged on the output end of the motor (9), a condenser (10) being arranged on the outside of the kettle body (3), and the condenser (10) being conductively connected to the inside of the kettle body (3).
2. The distillation kettle for producing aluminum isopropoxide according to claim 1, characterized in that: The tumbling assembly comprises a mounting box (11), a first rotating rod (12), a second rotating rod (13), two first bevel gears (14), a tumbling paddle (15), a first gear (16) and a gear ring (17) with a tooth groove on the inner wall. The mounting box (11) is fixed on the second rotating shaft (7). The first rotating rod (12) is rotatably mounted in the mounting box (11). The second rotating rod (13) is rotatably mounted in the mounting box (11). The two first bevel gears (14) ) are respectively fixedly mounted on the ends of the first rotating rod (12) and the second rotating rod (13) and the two first bevel gears (14) are meshed with each other; the tumbling paddle (15) is fixedly mounted on the second rotating rod (13) and the tumbling paddle (15) is used to tumble the material in the kettle body (3); the first gear (16) is fixedly mounted on the end of the first rotating rod (12) away from the first bevel gear (14); the gear ring (17) is mounted on the inner wall of the kettle body (3) and the first gear (16) is meshed with the inner wall of the gear ring (17).
3. The distillation kettle for producing aluminum isopropoxide according to claim 1, characterized in that: The driving assembly comprises two second bevel gears (18) and a third bevel gear (19); the first rotating shaft (5) is a hollow structure and the second rotating shaft (7) is inserted into the first rotating shaft (5); the two second bevel gears (18) are respectively fixed to the ends of the first rotating shaft (5) and the second rotating shaft (7); the third bevel gear (19) is fixed to the output end of the motor (9); and the two second bevel gears (18) are respectively meshed with two sides of the third bevel gear (19).
4. The distillation kettle for producing aluminum isopropoxide according to claim 1, characterized in that: A hollow connecting rod (20) is fixedly provided on the second rotating shaft (7), a telescopic rod (21) is slidably inserted into the connecting rod (20), a scraping rod (22) is fixedly provided at the end of the telescopic rod away from the connecting rod (20), and the scraping rod (22) is in sliding contact with the inner wall of the kettle body (3), and a spring (24) is fixedly provided in the connecting rod (20), and the spring (24) is fixedly connected to the telescopic rod (21).
5. The distillation kettle for producing aluminum isopropoxide according to claim 2, characterized in that: The inner wall of the kettle body (3) is fixedly provided with an annular water tray (25) with a hollow interior, and the gear ring (17) is fixedly provided on the water tray (25). The kettle body (3) is provided with a water inlet pipe (26) and the water inlet pipe (26) is conductively connected to the water tray (25). The water tray (25) is conductively provided with a plurality of nozzles (27) and the nozzles (27) face the inner wall of the kettle body (3).
6. The distillation kettle for producing aluminum isopropoxide according to claim 1, characterized in that: The top of the kettle body (3) is provided with an air outlet pipe (28), and the air outlet pipe (28) is conductively connected to the condenser (10); the condenser (10) comprises a condensation box (29) and a condensation pipe (30); the condensation box (29) is arranged outside the kettle body (3) and the condensation box (29) is provided with a water inlet (31) and a water outlet (32); the condensation pipe (30) is arranged inside the condensation box (29) and the condensation pipe (30) is conductively connected to the air outlet pipe (28).
7. The distillation kettle for producing aluminum isopropoxide according to claim 1, characterized in that: A heat-insulating layer (33) is fixedly provided on the outside of the kettle body (3).