Distillation kettle for glacial acetic acid production

Abstract

The utility model relates to the technical field of chemical industry, and discloses a distillation kettle for glacial acetic acid production, which comprises a distillation generator, a condensation component for fully condensing distillation steam is arranged on the outer wall of the distillation generator, and a control gear is fixedly connected with a motor driving end on the inner wall of the distillation generator. A control rod is rotationally connected to the inner wall of the distillation generator, a transmission rod is rotationally connected to the other end of the control rod, a rotating gear is rotationally connected to the other end of the transmission rod, a rotating motor is fixedly connected to the top of the rotating gear, and a heating rotating scraper is fixedly connected to the driving end of the rotating motor; and a rotating plate is fixedly connected to the outer wall of the bottom of the heating rotating scraping plate. According to the utility model, when acetic acid is subjected to distillation reaction, acetic acid steam and water drops attached to the inner wall of the reaction kettle are scraped by additionally arranging the scraping plate, so that the acetic acid steam and the water drops fall into reactants to continue to react, and the purity and the efficiency of acetic acid distillation are improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, and in particular to a distillation kettle for the production of glacial acetic acid. Background Technology

[0002] The working principle of the distillation vessel used in glacial acetic acid production is based on the difference in boiling points between different substances. Under the action of a heating device, the glacial acetic acid mixture in the distillation vessel is heated to boiling. The glacial acetic acid, with its lower boiling point, first vaporizes into steam. This steam rises to the upper space of the distillation vessel and then enters the condenser through pipes. In the condenser, the steam rapidly condenses into liquid upon encountering cold air. Because glacial acetic acid has a relatively low boiling point, its steam is preferentially condensed and collected, thus separating it from other impurities with higher boiling points or unvaporized materials, achieving the purpose of purifying glacial acetic acid.

[0003] The internal structure of a distillation vessel used in glacial acetic acid production generally includes a heating device to provide heat for distillation; a stirring device consisting of a motor, stirring shaft, and stirring paddle to ensure uniform heating of the material; temperature and pressure monitoring elements to accurately monitor distillation conditions; and a steam channel connecting the upper part of the distillation vessel to the condenser to allow glacial acetic acid vapor to enter for condensation.

[0004] In existing technologies, during the use of glacial acetic acid distillation kettles, steam or water droplets generated during distillation adhere to the inside of the kettle, resulting in incomplete reaction in this part, which affects the efficiency and purity of acetic acid distillation. To address this issue, a distillation kettle for glacial acetic acid production is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a distillation vessel for the production of glacial acetic acid, which aims to improve the problem in the prior art where steam or water droplets generated during distillation adhere to the inside of the reaction vessel, leading to incomplete reaction in this part.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A distillation kettle for producing glacial acetic acid includes a distillation generator. The outer wall of the distillation generator is provided with a condensation assembly for fully condensing the distilled vapor. A control gear is fixedly connected to the motor drive end of the inner wall of the distillation generator. A control rod is rotatably connected to the inner wall of the distillation generator. A transmission rod is rotatably connected to the other end of the control rod. A rotating gear is rotatably connected to the other end of the transmission rod. A rotating motor is fixedly connected to the top of the rotating gear. A heating rotating scraper is fixedly connected to the drive end of the rotating motor. A rotating plate is fixedly connected to the bottom outer wall of the heating rotating scraper.

[0008] As a further description of the above technical solution:

[0009] The condensation assembly includes a transmission pipe, the outer wall of which is fixedly connected to the top interior of the distillation generator, and the other end of the transmission pipe is fixedly connected to a condenser. The inner wall of the condenser is provided with a condensate inlet, and multiple condenser tubes and multiple protrusions are fixedly connected to the inner wall of the condenser.

[0010] As a further description of the above technical solution:

[0011] The condensate inlet is located at one end of the condenser tube, and a receiver is provided at the bottom of the condenser;

[0012] As a further description of the above technical solution:

[0013] A condensate inlet is fixedly connected to the outer wall of the condenser, and a condensate outlet is fixedly connected to the outer wall of the condenser.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the distillation generator is provided with a waste residue outlet, and the inner wall of the distillation generator is provided with a feed inlet;

[0016] As a further description of the above technical solution:

[0017] The rotating plate is slidably connected to the inner wall of the distillation generator, and the outer teeth of the control gear are meshed with the outer teeth of the rotating gear.

[0018] As a further description of the above technical solution:

[0019] The bottom of the distillation generator is provided with a rotating groove, and the bottom of the rotating gear is slidably connected to the inner wall of the rotating groove;

[0020] As a further description of the above technical solution:

[0021] The inner wall of the distillation generator is equipped with a pressurizing device, the inner wall of the distillation generator is in contact with the outer wall of the heating rotating scraper, and multiple supports are fixedly connected to the bottom of the distillation generator.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the rotation of the motor drives the control gear to start rotating, and the rotation of the control gear drives the rotating gear to rotate. The rotating gear will rotate in a circle inside the rotating groove. At the same time, the motor starts and drives the heating rotating scraper to rotate. While heating and stirring the material, the heating rotating scraper scrapes off the acetic acid water droplets and steam that are attached to the inside due to heating, so that they fall into the material and react fully. During the high-temperature distillation, the pressurizing device pressurizes the inside, making the distillation reaction more complete.

[0024] 2. In this utility model, acetic acid vapor is transported to the condenser through a transmission pipe. When the condenser is in use, condensate is first added through the condensate inlet to fill the condenser tube. When the acetic acid vapor enters the condenser, it will fully contact the outer wall of the condenser tube. After cooling, the acetic acid adheres to the inner wall of the condenser. The inner wall of the condenser has multiple protrusions. The function of the protrusions is to allow the water droplets adhering to the inner wall of the condenser to slide off along the protrusions due to the curved surface of the protrusions, reducing the residence time of the acetic acid water droplets and avoiding the impact on subsequent condensation caused by the water droplets staying inside the condenser for too long. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a distillation kettle for producing glacial acetic acid according to the present invention.

[0026] Figure 2 This is a schematic diagram of the rotating plate of a distillation kettle for producing glacial acetic acid, as proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the waste residue outlet of a distillation kettle for glacial acetic acid production according to the present invention.

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Legend:

[0030] 1. Distillation generator; 2. Rotating plate; 3. Heating rotating scraper; 4. Control gear; 5. Rotating gear; 6. Transmission rod; 7. Control rod; 8. Transmission pipe; 9. Condenser; 10. Condensate inlet; 11. Condenser tube; 12. Protrusion; 13. Receiver; 14. Feed port; 15. Support; 16. Pressurizing equipment; 17. Rotating trough; 18. Waste residue outlet; 19. Condensate inlet; 20. Condensate outlet; 21. Rotating motor. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 , Figure 2 and Figure 4 One embodiment of this utility model is a distillation kettle for producing glacial acetic acid, comprising a distillation generator 1. The distillation generator is used for the reaction of acetic acid distillation. The outer wall of the distillation generator 1 is provided with a condensation component for fully condensing the distilled vapor, which facilitates rapid cooling of the distilled acetic acid vapor. A control gear 4 is fixedly connected to the motor drive end of the inner wall of the distillation generator 1. The motor can provide power for the rotation of the control gear. A control rod 7 is rotatably connected to the inner wall of the distillation generator 1. The control rod 7 is used to control the transmission of subsequent components. The other end of the control rod 7 is rotatably connected to a transmission rod 6, which moves with the movement of the control rod.

[0033] The other end of the transmission rod 6 is rotatably connected to a rotating gear 5. The rotation of the control gear drives the rotating gear to rotate, which in turn drives the transmission rod to rotate, and the rotation of the transmission rod drives the control rod to rotate, thereby realizing the circular motion of the rotating gear. A rotating motor 21 is fixedly connected to the top of the rotating gear 5. The rotating motor provides power for the rotation of the heating rotating scraper. The drive end of the rotating motor 21 is fixedly connected to the heating rotating scraper 3. The heating rotating scraper 3 is used to heat the internal material and stir the internal acetic acid. The scraper on the outer wall can scrape off the acetic acid vapor and water droplets adhering to the inner wall of the distillation generator to ensure a full reaction. A rotating plate 2 is fixedly connected to the bottom outer wall of the heating rotating scraper 3 to prevent material from entering the power source and causing corrosion.

[0034] The inner wall of the distillation generator 1 is provided with a waste residue outlet 18, which is used to discharge the fully reacted waste residue. The inner wall of the distillation generator 1 is provided with a feed port 14, which is used to add acetic acid that needs to be distilled. The rotating plate 2 is slidably connected to the inner wall of the distillation generator 1. The outer teeth of the control gear 4 and the outer teeth of the rotating gear 5 are meshed with each other. This connection relationship facilitates the control gear to drive the rotating gear to rotate. The bottom of the distillation generator 1 is provided with a rotating groove 17, which is used to limit the movement trajectory of the rotating gear. The bottom of the rotating gear 5 is slidably connected to the inner wall of the rotating groove 17. The inner wall of the distillation generator 1 is provided with a pressurizing device 16, which is used to provide high pressure during the distillation reaction in the distillation generator to facilitate a full reaction. The inner wall of the distillation generator 1 is in contact with the outer wall of the heated rotating scraper 3. The heated rotating scraper 3 facilitates the scraping off of steam and water droplets adhering to the inner wall of the distillation generator. The bottom of the distillation generator 1 is fixedly connected with multiple supports 15.

[0035] Reference Figure 1 , Figure 2 and Figure 3 The condensation assembly includes a transmission pipe 8 for transmitting acetic acid vapor. The outer wall of the transmission pipe 8 is fixedly connected to the top interior of the distillation generator 1. The other end of the transmission pipe 8 is fixedly connected to a condenser 9 for condensing acetic acid vapor. The inner wall of the condenser 9 is provided with a condensate inlet 10 for introducing condensate. Multiple condenser tubes 11 are fixedly connected to the inner wall of the condenser 9. By introducing condensate into the condenser tubes, the acetic acid vapor is cooled and turned into water droplets by contacting the outer wall of the condenser tubes. Multiple protrusions 12 are fixedly connected to the inner wall of the condenser 9. The surface of the protrusions is curved to facilitate the dripping of water droplets. The condensate inlet 10 is located at one end of the condenser tube 11. A receiver 13 is provided at the bottom of the condenser 9 for receiving the condensed acetic acid. A condensate inlet 19 is fixedly connected to the outer wall of the condenser 9 for adding condensate. A condensate outlet 20 is fixedly connected to the outer wall of the condenser 9 for discharging condensate.

[0036] Working principle: When glacial acetic acid distillation is required, the material to be distilled is added through the feed port, and then the motor is started. The rotation of the motor drives the control gear to start rotating, which in turn drives the rotating gear to rotate. The rotating gear rotates in a circle inside the rotating tank. At the same time, the motor starts and drives the heating rotating scraper to rotate at a slow speed. The heating rotating scraper is equipped with a heating component inside. While heating and stirring the material, the heating rotating scraper scrapes off the acetic acid water droplets that are attached to the inside due to heating, allowing them to fall into the material for full reaction. During high-temperature distillation, the pressurization device pressurizes the inside, making the distillation reaction more complete.

[0037] After acetic acid distillation is complete, the acetic acid vapor is transported to the condenser through a transmission pipe. When using the condenser, condensate is first added through the condensate inlet to fill the condenser tubes. This ensures that when the acetic acid vapor enters the condenser, it makes full contact with the outer wall of the condenser tubes. As the acetic acid cools down, it turns into water droplets that adhere to the inner wall of the condenser. The inner wall of the condenser has multiple protrusions. These protrusions allow the water droplets adhering to the inner wall of the condenser to slide off due to the curved surface of the protrusions, reducing the residence time of the acetic acid droplets. The receiver then collects the dripping acetic acid.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A distillation vessel for producing glacial acetic acid, comprising a distillation generator (1), characterized in that: The outer wall of the distillation generator (1) is provided with a condensation component for fully condensing the distilled steam. The inner wall of the distillation generator (1) is fixedly connected to the motor drive end with a control gear (4). The inner wall of the distillation generator (1) is rotatably connected to a control rod (7). The other end of the control rod (7) is rotatably connected to a transmission rod (6). The other end of the transmission rod (6) is rotatably connected to a rotating gear (5). The top of the rotating gear (5) is fixedly connected to a rotating motor (21). The drive end of the rotating motor (21) is fixedly connected to a heating rotating scraper (3). The bottom outer wall of the heating rotating scraper (3) is fixedly connected to a rotating plate (2).

2. The distillation vessel for producing glacial acetic acid according to claim 1, characterized in that: The condensation assembly includes a transmission pipe (8), the outer wall of which is fixedly connected to the top of the distillation generator (1), and the other end of the transmission pipe (8) is fixedly connected to a condenser (9). The inner wall of the condenser (9) is provided with a condensate inlet (10), and the inner wall of the condenser (9) is fixedly connected to multiple condenser tubes (11) and multiple protrusions (12).

3. The distillation vessel for producing glacial acetic acid according to claim 2, characterized in that: The condensate inlet (10) is located at one end of the condenser tube (11), and a receiver (13) is provided at the bottom of the condenser (9).

4. The distillation vessel for producing glacial acetic acid according to claim 3, characterized in that: The outer wall of the condenser (9) is fixedly connected to a condensate inlet (19), and the outer wall of the condenser (9) is fixedly connected to a condensate outlet (20).

5. The distillation vessel for producing glacial acetic acid according to claim 1, characterized in that: The inner wall of the distillation generator (1) is provided with a waste residue outlet (18) and a feed inlet (14).

6. The distillation vessel for producing glacial acetic acid according to claim 1, characterized in that: The rotating plate (2) is slidably connected to the inner wall of the distillation generator (1), and the outer teeth of the control gear (4) are meshed with the outer teeth of the rotating gear (5).

7. The distillation vessel for producing glacial acetic acid according to claim 1, characterized in that: The bottom of the distillation generator (1) is provided with a rotating groove (17), and the bottom of the rotating gear (5) is slidably connected to the inner wall of the rotating groove (17).

8. The distillation vessel for producing glacial acetic acid according to claim 1, characterized in that: The inner wall of the distillation generator (1) is provided with a pressurizing device (16), the inner wall of the distillation generator (1) is in contact with the outer wall of the heating rotating scraper (3), and multiple supports (15) are fixedly connected to the bottom of the distillation generator (1).

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