Distillation device for producing ethylene glycol antimony

Abstract

The utility model relates to the technical field of ethylene glycol antimony manufacturing equipment, in particular to a distillation device for ethylene glycol antimony production, which comprises a tank body, a heating plate for heating an internal solution is arranged at the inner bottom of the tank body, and a stirring component for stirring the internal solution is arranged at the inner bottom of the tank body. The side, close to the upper end, of the middle of the tank body is fixedly connected with a liquid inlet pipe, the upper end of the liquid inlet pipe is in threaded connection with a sealing cover, and a liquefying assembly is arranged at the upper end in the tank body and used for liquefying and distilling heated ethylene glycol antimony gas; a gas flow guide assembly is arranged at the upper end of the stirring assembly in the tank body and is used for rapidly guiding heated solution gas to the liquefaction assembly. Compared with the prior art, the ethylene glycol antimony distillation device solves the problems that in the prior art, an ethylene glycol antimony distillation device is low in distillation efficiency, and residual residues at the bottom are difficult to discharge.

Description

Technical Field

[0001] The utility model relates to the field of ethylene glycol antimony manufacturing equipment, in particular to a distillation device for ethylene glycol antimony production. Background Art

[0002] In the chemical industry, antimony glycolate (EGG) is a key catalyst widely used in polyester polycondensation reactions. Its unique physicochemical properties, such as high solubility, good dispersibility, high antimony content, and excellent catalytic activity, make EGG an excellent catalyst for increasing plant production capacity and improving product quality. However, the distillation step in EGG production is crucial, directly impacting product purity and yield.

[0003] In the prior art, a Chinese patent document with publication number CN210963988U proposes a distillation device for producing ethylene glycol antimony, comprising a distillation kettle and a storage tank. The distillation kettle comprises an upper tank body and a lower tank body formed in one piece. Three supporting legs are fixedly connected to the bottom of the lower tank body. The inner cavity of the side of the lower tank body is filled with a cork heat insulation board along a ring. A motor is installed in the center of the top of the upper tank body. Although the design of the upper tank body and the lower tank body can effectively pour the ethylene glycol antimony raw material into the lower tank body, the ethylene glycol antimony raw material in the lower tank body is distilled by the heating effect of the evaporation heater. The heated ethylene glycol antimony liquid evaporates to form steam, and It rises upward and condenses into liquid ethylene glycol antimony on the inner wall of the upper tank, and can eventually be drained into a storage tank for storage through the diversion effect of the diversion groove. However, this technology is consistent with the traditional method in that: in actual operation scenarios, existing ethylene glycol antimony distillation devices often lack efficient airflow guiding components and rely solely on the natural upward power of the steam airflow. This process is particularly slow, which not only delays the speed at which steam condenses into liquid ethylene glycol antimony, but also significantly reduces the overall distillation efficiency. In addition, when the distillation operation is completed, a large amount of residue will accumulate at the bottom of the distillation tank body. The presence of these residues not only occupies the effective space, but also poses a potential threat to the quality of subsequent batches of products.

[0004] Furthermore, we disclose a distillation device for producing ethylene glycol antimony to meet the actual demand for the low distillation efficiency and difficulty in discharging the residual residue at the bottom of the ethylene glycol antimony distillation device in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a distillation device for producing ethylene glycol antimony, so as to solve the problems of low distillation efficiency and difficulty in discharging residual residue at the bottom of the ethylene glycol antimony distillation device in the prior art.

[0006] Based on the above-mentioned purpose, the utility model provides a distillation device for producing ethylene glycol antimony, comprising a tank body, wherein the inner bottom of the tank body is provided with a heating plate for heating the internal solution, the inner bottom of the tank body is provided with a stirring assembly for stirring the internal solution, the middle part of the tank body is fixedly connected to the upper end side with a liquid inlet pipe, the upper end of the liquid inlet pipe is threadedly connected with a sealing cover, the upper end of the inner part of the tank body is provided with a liquefaction assembly, the liquefaction assembly is used to liquefy and distill the heated ethylene glycol antimony gas, the interior of the tank body is provided with an airflow guide assembly at the upper end of the stirring assembly, the airflow guide assembly is used to quickly guide the heated solution gas to the liquefaction assembly, a through hole is provided on one side of the lower end of the tank body for discharging the remaining solution waste after heating, the lower end surface of the tank body is provided with a discharge control assembly at the lower end of the through hole, and the discharge control assembly is used to open or close the through hole.

[0007] Preferably, the stirring assembly includes a first rotating rod that is engaged and rotatably connected to the lower end of the middle part of the tank body, and a plurality of stirring rods are fixedly connected to the outer wall of the first rotating rod at even intervals. A servo motor is provided in the middle of the lower end surface of the tank body, and the output end of the servo motor is fixedly connected to the first rotating rod.

[0008] Preferably, the liquefaction component includes a liquefaction plate, which is trumpet-shaped and small at the top and large at the bottom. The lower end of the outer wall of the liquefaction plate is fixedly connected to a ring plate, and the ring plate is inclined. The outer wall of the ring plate is fixedly connected to the tank body, and a cooling channel is spirally opened inside the liquefaction plate. The upper and lower ends of the inner wall of the liquefaction plate are respectively fixedly connected to the second connecting pipe and the first connecting pipe. The upper end of the liquefaction plate is connected to the second connecting pipe, and the lower end of the liquefaction plate is connected to the first connecting pipe. The lower ends of the second connecting pipe and the first connecting pipe both pass through the tank body.

[0009] Preferably, a liquid discharge pipe is fixedly connected to a side of the middle portion of the tank body close to the upper end away from the liquid inlet pipe, and the ring plate is inclined toward the liquid discharge pipe.

[0010] Preferably, the air flow guiding assembly includes a second rotating rod fixedly connected to the middle of the upper end surface of the first rotating rod, a fan is fixedly connected to the middle of the outer wall of the second rotating rod, the upper end of the second rotating rod extends to the upper end of the liquefaction plate and is fixedly connected to a connecting rod, the lower end surface of the connecting rod is fixedly connected to a scraper rod on the side away from the second rotating rod, one end surface of the scraper rod is in contact with the outer wall of the liquefaction plate, the scraper rod is arc-shaped, a guide column is fixedly connected to the middle of the upper end of the inner wall of the tank body, a guide groove is provided in the middle of the lower end surface of the guide column, and the guide groove is arc-shaped.

[0011] Preferably, the discharge control assembly includes a discharge plate, one end of which is fixedly connected to a rotating shaft, the upper end of the rotating shaft is rotatably connected to the tank body, a torsion spring is sleeved on the upper end of the outer wall of the rotating shaft and the rotating connection between the tank body, and the outer wall of the discharge plate is fixedly connected to a shift rod on the side away from the rotating shaft.

[0012] Preferably, the discharge control assembly further comprises a cleaning rod fixedly connected to the lower end of the outer wall of the first rotating rod, the cleaning rod is arc-shaped and the lower end thereof contacts the inner bottom surface of the tank body.

[0013] Beneficial effects of the utility model:

[0014] The airflow guide assembly in this distillation unit for ethylene glycol antimony production effectively accelerates gas flow, ensuring that the heated ethylene glycol antimony gas is quickly and orderly directed to the liquefaction assembly. This design not only shortens the gas's residence time within the tank but also significantly enhances contact between the gas and the liquefied surface, thereby accelerating the liquefaction process and enabling more efficient distillation.

[0015] The distillation device for ethylene glycol antimony production is equipped with a discharge control component at the lower end and a through-hole at the corresponding position, which realizes the effective cleaning of the residue at the bottom of the tank body after distillation. This design allows the operator to easily control the discharge control component to open the through-hole after the distillation process. The servo motor drives the cleaning rod to rotate so that the residue accumulated inside can be discharged smoothly. Compared with the traditional method that requires tedious steps of manual cleaning or disassembly of the tank body, this device significantly simplifies the residue treatment process and improves the cleanliness and operation convenience of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the liquefaction plate of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the cleaning rod of the utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the material discharge plate of the utility model.

[0021] The following are marked in the figure:

[0022] 1. Tank body; 2. Liquid inlet pipe; 3. Liquid discharge pipe; 4. First rotating rod; 5. Stirring rod; 6. Second rotating rod; 7. Fan; 8. Guide column; 9. Liquefaction plate; 10. Servo motor; 11. Scraper rod; 12. Connecting rod; 13. First connecting pipe; 14. Second connecting pipe; 15. Cooling channel; 16. Cleaning rod; 17. Rotating shaft; 18. Torsion spring; 19. Discharge plate; 20. Push rod; 21. Through hole; 22. Guide groove; 23. Ring plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0025] like Figures 1 to 5 As shown, a distillation device for producing ethylene glycol antimony includes a tank body 1, a heating plate for heating the internal solution is provided at the inner bottom of the tank body 1, a stirring assembly for stirring the internal solution is provided at the inner bottom of the tank body 1, a liquid inlet pipe 2 is fixedly connected to one side of the middle part of the upper end of the tank body 1, a sealing cover is threadedly connected to the upper end of the liquid inlet pipe 2, a liquefaction assembly is provided at the upper end of the tank body 1, and the liquefaction assembly is used to liquefy and distill the heated ethylene glycol antimony gas, an airflow guide assembly is provided at the upper end of the stirring assembly in the interior of the tank body 1, and the airflow guide assembly is used to quickly guide the heated solution gas to the liquefaction assembly, a through hole 21 is opened on one side of the lower end of the tank body 1 for discharging residual solution waste after heating, and a discharge control assembly is provided at the lower end surface of the tank body 1 at the lower end of the through hole 21, and the discharge control assembly is used to open or close the through hole 21;

[0026] The distillation device for ethylene glycol antimony production significantly improves production efficiency and operational convenience through two innovative designs. On the one hand, the built-in airflow guiding component greatly accelerates the flow rate of the heated ethylene glycol antimony gas, ensuring that the gas is quickly guided to the liquefaction component for efficient liquefaction, thereby greatly shortening the distillation cycle and improving overall production efficiency. On the other hand, the unique discharge control component and the ingenious combination of the through hole 21 realize the precise control and convenient discharge of the distillation residue, which not only simplifies the post-production cleanup work, but also ensures the safety and continuity of the production process.

[0027] Further, such as Figure 2 As shown, the stirring assembly includes a first rotating rod 4 that is rotatably connected to the lower end of the middle part of the tank body 1. A plurality of stirring rods 5 are fixedly connected to the outer wall of the first rotating rod 4 at even intervals. A servo motor 10 is provided in the middle of the lower end surface of the tank body 1, and the output end of the servo motor 10 is fixedly connected to the first rotating rod 4.

[0028] During operation, the servo motor 10 serves as a power source, and its output end is tightly fixed to the first rotating rod 4. Through the precise control of the servo motor 10, the first rotating rod 4 realizes stable and powerful rotational motion in the tank body 1. As the first rotating rod 4 rotates, the stirring rods 5 rotate synchronously, stirring the ethylene glycol antimony solution in the tank body 1 in an all-round and uniform manner. This stirring method not only promotes the full mixing of the components in the solution, improves the temperature uniformity and reaction rate of the solution, but also helps to prevent local overheating or precipitation, thereby ensuring the stability of the distillation process and the quality of the distillation product.

[0029] Further, such as Figures 1 to 3 As shown, the liquefaction assembly includes a liquefaction plate 9, which is trumpet-shaped and small at the top and large at the bottom. The lower end of the outer wall of the liquefaction plate 9 is fixedly connected to a ring plate 23, which is inclined. The outer wall of the ring plate 23 is fixedly connected to the tank body 1, and a cooling channel 15 is spirally opened inside the liquefaction plate 9. The upper and lower ends of the inner wall of the liquefaction plate 9 are respectively fixedly connected to the second connecting pipe 14 and the first connecting pipe 13. The upper end of the liquefaction plate 9 is connected to the second connecting pipe 14, and the lower end of the liquefaction plate 9 is connected to the first connecting pipe 13. The lower ends of the second connecting pipe 14 and the first connecting pipe 13 both pass through the tank body 1. The middle part of the tank body 1 is fixedly connected to the side away from the liquid inlet pipe 2 on the upper end, and the ring plate 23 is inclined toward the side of the discharge pipe 3.

[0030] The liquefaction plate 9 adopts a unique trumpet-shaped design. The structure of small at the top and large at the bottom is conducive to guiding the steam to converge toward the center and accelerate the cooling process. The spiral cooling channel 15 opened inside the liquefaction plate 9 is the key to the cooling system. The circulating cooling medium effectively reduces the temperature of the surface of the liquefaction plate 9, providing the necessary cold source for the liquefaction of the steam. The cooling medium enters through the first connecting pipe 13 and is discharged through the second connecting pipe 14. When the heated ethylene glycol antimony vapor rises to the upper end of the liquefaction plate 9, the vapor gradually converges and contacts the cooled upper surface of the liquefaction plate 9 under the guidance of the trumpet-shaped structure. The vapor quickly loses heat on the surface of the liquefaction plate 9, is converted into liquid ethylene glycol antimony, and flows downward along the inner wall of the liquefaction plate 9. The ring plate 23 serves as the support structure of the liquefaction plate 9. Its inclined design guides the flow direction of the liquid ethylene glycol antimony. The ring plate 23 is tilted toward the side of the drain pipe 3, allowing the liquefied ethylene glycol antimony to flow smoothly into the drain pipe 3 to complete the collection of the distillation product. This design not only improves the distillation efficiency, but also ensures the purity and collection effect of the distillation product.

[0031] Further, such as Figures 2 to 4 As shown, the air flow guide assembly includes a second rotating rod 6 fixedly connected to the middle of the upper end surface of the first rotating rod 4, a fan 7 is fixedly connected to the middle of the outer wall of the second rotating rod 6, the upper end of the second rotating rod 6 extends to the upper end of the liquefaction plate 9 and is fixedly connected to a connecting rod 12, and a scraper rod 11 is fixedly connected to the side of the lower end surface of the connecting rod 12 away from the second rotating rod 6, one end surface of the scraper rod 11 contacts the outer wall of the liquefaction plate 9, and the scraper rod 11 is arc-shaped. A guide column 8 is fixedly connected to the middle of the upper end of the inner wall of the tank body 1, and a guide groove 22 is opened in the middle of the lower end surface of the guide column 8, and the guide groove 22 is arc-shaped;

[0032] First, when the servo motor 10 drives the first rotating rod 4 to rotate, since the second rotating rod 6 is fixedly connected to the middle of the upper end surface of the first rotating rod 4, the second rotating rod 6 will also rotate synchronously. This rotational movement drives the rotation of the fan 7 fixedly connected to the middle of the outer wall. The blades of the fan 7 generate an upward airflow during the rotation process, which effectively accelerates the rising speed of the ethylene glycol antimony vapor in the tank body 1. At the same time, the second rotating rod 6 is connected to the scraper 11 through the connecting rod 12. The scraper 11 is designed to be arc-shaped, and one end surface of the scraper 11 is in close contact with the outer wall of the liquefaction plate 9. As the second rotating rod 6 rotates, the scraper 11 also performs a circular motion along the outer wall of the liquefaction plate 9. This design not only helps to prevent the accumulation of antimony vapor on the liquefaction plate 9, but also helps to prevent the accumulation of antimony vapor on the liquefaction plate 9. Accumulated impurities or residues affect the liquefaction effect, and the scraping effect promotes the cleaning of the surface of the liquefaction plate 9. In addition, the guide column 8 fixedly connected to the middle of the upper end of the inner wall of the tank body 1 and the guide groove 22 at the lower end further enhance the airflow guiding effect. The arc design of the guide groove 22 can guide the rising airflow to flow more smoothly to the liquefaction plate 9, reducing the turbulence and energy loss of the airflow in the tank body 1. In summary, the airflow guiding component generates an upward airflow through the rotation of the fan 7, combined with the cleaning effect of the scraper rod 11 and the guiding effect of the guide column 8 and its guide groove 22, to achieve efficient and orderly guidance of the heated ethylene glycol antimony gas, promote the rapid liquefaction of steam, and improve the distillation efficiency.

[0033] Further, such as Figure 1 and Figure 5 As shown, the discharge control assembly includes a discharge plate 19, one end of which is fixedly connected to a rotating shaft 17, the upper end of which is rotatably connected to the tank body 1, and a torsion spring 18 is sleeved at the upper end of the outer wall of the rotating shaft 17 and the rotatable connection between the tank body 1, and a shift rod 20 is fixedly connected to the side of the outer wall of the discharge plate 19 away from the rotating shaft 17. The discharge control assembly also includes a cleaning rod 16 fixedly connected to the lower end of the outer wall of the first rotating rod 4, the cleaning rod 16 is designed to be arc-shaped and the lower end of which contacts the inner bottom surface of the tank body 1;

[0034] First of all, the discharge plate 19 serves as the main control component for discharge, and one end of the discharge plate 19 is rotationally connected to the tank body 1 through the rotating shaft 17. The upper end of the outer wall of the rotating shaft 17 is provided with a torsion spring 18. The function of the torsion spring 18 is to keep the discharge plate 19 closed when there is no external force, thereby preventing leakage of materials or steam during the distillation process. When the residue needs to be discharged, the operator can manually rotate the discharge plate 19 through the lever 20 to overcome the resistance of the torsion spring 18, so that the discharge plate 19 opens, exposing the residue outlet at the bottom of the tank body 1. At the same time, the discharge control component utilizes the rotational movement of the first rotating rod 4 to assist in the cleaning and discharge of the residue. When the first rotating rod 4 rotates under the drive of the servo motor 10, the cleaning rod 16 fixedly connected to the lower end of its outer wall also rotates synchronously. The cleaning rod 16 is designed to be arc-shaped, and the lower end is in close contact with the inner bottom surface of the tank body 1. This design enables the cleaning rod 16 to effectively scrape and push the residue at the bottom of the tank body 1 during rotation. As the cleaning rod 16 continues to rotate, the residue is gradually pushed toward the position of the discharge plate 19 and eventually moves to above the through hole 21. When the residue moves to above the through hole 21, due to the action of gravity, the residue will naturally fall into the collection container below, thereby completing the discharge work. The arc-shaped design of the cleaning rod 16 improves the cleaning effect and makes the residue smoother during the pushing process, reducing the occurrence of jamming.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0036] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A distillation device for producing ethylene glycol antimony, comprising a tank body (1), wherein the inner bottom of the tank body (1) is provided with a heating plate for heating the internal solution, the inner bottom of the tank body (1) is provided with a stirring assembly for stirring the internal solution, a liquid inlet pipe (2) is fixedly connected to one side of the middle portion of the tank body (1) near the upper end, and a sealing cover is threadedly connected to the upper end of the liquid inlet pipe (2), characterized in that: A liquefaction component is provided at the upper end of the interior of the tank body (1), and the liquefaction component is used to liquefy and distill the heated ethylene glycol antimony gas. An airflow guide component is provided at the upper end of the stirring component inside the tank body (1), and the airflow guide component is used to quickly guide the heated solution gas to the liquefaction component. A through hole (21) is provided on one side of the lower end of the tank body (1) for discharging residual solution waste after heating. A discharge control component is provided at the lower end surface of the tank body (1) at the lower end of the through hole (21), and the discharge control component is used to open or close the through hole (21).

2. A distillation apparatus for producing ethylene glycol antimony according to claim 1, characterized in that: The stirring assembly comprises a first rotating rod (4) which is engaged and rotatably connected to the lower end of the middle portion of the tank body (1); a plurality of stirring rods (5) are fixedly connected to the outer wall of the first rotating rod (4) at even intervals; a servo motor (10) is provided in the middle portion of the lower end surface of the tank body (1); an output end of the servo motor (10) is fixedly connected to the first rotating rod (4).

3. The distillation apparatus for producing ethylene glycol antimony according to claim 1, characterized in that: The liquefaction assembly includes a liquefaction plate (9), the liquefaction plate (9) is trumpet-shaped and is smaller at the top and larger at the bottom. The lower end of the outer wall of the liquefaction plate (9) is fixedly connected to a ring plate (23), the ring plate (23) is arranged obliquely, the outer wall of the ring plate (23) is fixedly connected to the tank body (1), the interior of the liquefaction plate (9) is spirally provided with a cooling channel (15), the upper and lower ends of the inner wall of the liquefaction plate (9) are respectively fixedly connected to a second connecting pipe (14) and a first connecting pipe (13), the upper end of the liquefaction plate (9) is connected to the second connecting pipe (14), the lower end of the liquefaction plate (9) is connected to the first connecting pipe (13), and the lower ends of the second connecting pipe (14) and the first connecting pipe (13) both pass through the tank body (1).

4. A distillation apparatus for producing ethylene glycol antimony according to claim 3, characterized in that: A liquid discharge pipe (3) is fixedly connected to a side of the middle portion of the tank body (1) close to the upper end and away from the liquid inlet pipe (2), and the ring plate (23) is inclined toward the liquid discharge pipe (3).

5. The distillation apparatus for producing ethylene glycol antimony according to claim 1, characterized in that: The airflow guide assembly comprises a second rotating rod (6) fixedly connected to the middle of the upper end surface of the first rotating rod (4); a fan (7) is fixedly connected to the middle of the outer wall of the second rotating rod (6); the upper end of the second rotating rod (6) extends to the upper end of the liquefaction plate (9) and is fixedly connected to a connecting rod (12); a scraper (11) is fixedly connected to the side of the lower end surface of the connecting rod (12) away from the second rotating rod (6); one end surface of the scraper (11) contacts the outer wall of the liquefaction plate (9); the scraper (11) is arc-shaped; a guide column (8) is fixedly connected to the middle of the upper end of the inner wall of the tank body (1); a guide groove (22) is provided in the middle of the lower end surface of the guide column (8); and the guide groove (22) is arc-shaped.

6. The distillation apparatus for producing ethylene glycol antimony according to claim 1, characterized in that: The discharge control assembly includes a discharge plate (19), one end of the discharge plate (19) is fixedly connected to a rotating shaft (17), the upper end of the rotating shaft (17) is rotatably connected to the tank body (1), a torsion spring (18) is sleeved on the upper end of the outer wall of the rotating shaft (17) and the rotatably connected part of the tank body (1), and a shifting rod (20) is fixedly connected to the side of the outer wall of the discharge plate (19) away from the rotating shaft (17).

7. A distillation apparatus for producing ethylene glycol antimony according to claim 6, characterized in that: The discharge control assembly further comprises a cleaning rod (16) fixedly connected to the lower end of the outer wall of the first rotating rod (4); the cleaning rod (16) is arc-shaped and the lower end thereof contacts the inner bottom surface of the tank body (1).

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