A distillation kettle for PIPP A waste liquid treatment

Abstract

The utility model discloses a distillation kettle for PIPPA waste liquid treatment, the kettle body upper surface is equipped with the kettle cover, the kettle cover upper surface is provided with motor through motor base, and the output shaft of motor is connected with the stirring shaft top end through the shaft coupling, and the stirring shaft bottom is provided with the U type stirring paddle, and the U type stirring paddle rotation is arranged in the kettle body inside, the both sides of U type stirring paddle are provided with the conical convex, and the conical convex is movably connected with the kettle body inner wall, and the first inclined shovel edge is arranged on the edge of the normal side of one side of U type stirring paddle and extends, and the second inclined shovel edge is arranged on the edge of the back side of the other side of U type stirring paddle and extends, and the first inclined shovel edge and the second inclined shovel edge are movably connected with the kettle body inner wall, the utility model discloses reasonable in structure, prevents the larger material from adhering in the kettle body inner wall through the conical convex, when the motor reverses, the residual film formed in the kettle body inner wall can be completely scraped off through the first inclined shovel edge and the second inclined shovel edge, greatly improves the scrape wall effect, thereby ensures the heat transfer performance of distillation kettle.

Description

Technical Field

[0001] This utility model relates to the field of distillation kettle technology, specifically a distillation kettle for treating PIPPA waste liquid. Background Technology

[0002] Distillation kettles are core equipment used in industries such as chemical, pharmaceutical, food, and fragrance to separate liquid mixtures. Their basic principle is to utilize the differences in boiling points of the components in the mixture, heating them to partially vaporize them, and then condensing and recovering the vapors, thereby achieving separation or purification.

[0003] The distillation vessel used for PIPPA waste liquid treatment is a vacuum distillation vessel. The residue of PIPPA waste liquid is viscous during treatment. Currently, the stirring paddles of distillation vessels used for PIPPA waste liquid treatment generally have a wall scraping function. However, traditional stirring paddles only achieve wall scraping by contacting the inner wall of the vessel with the outer edge. Although the vessel body will not leave large deposits, a thin film will still remain. If it is not cleaned, it will slightly affect the heat transfer effect. Therefore, an improved technology is urgently needed to solve this problem in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a distillation vessel for treating PIPPA waste liquid, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a distillation vessel for treating PIPPA waste liquid, comprising a vessel body, a vessel cover, a motor, a stirring shaft, and a U-shaped stirring paddle. The vessel body is provided with a jacket, and the bottom of the vessel body is provided with a discharge port. The vessel cover is provided on the upper surface of the vessel body through a flange. A motor is provided at the center of the upper surface of the vessel cover through a motor mount. The output shaft of the motor is connected to the top of the stirring shaft through a coupling. A U-shaped stirring paddle is provided at the bottom of the stirring shaft, and the U-shaped stirring paddle is rotatably disposed inside the vessel body. The U-shaped stirring paddle has conical protrusions on both outer edges, which are movably connected to the inner wall of the vessel. A first inclined shovel edge extends from the edge of the front side of one side of the U-shaped stirring paddle, and a second inclined shovel edge extends from the edge of the rear side of the other side of the U-shaped stirring paddle. Both the first and second inclined shovel edges are movably connected to the inner wall of the vessel.

[0006] Preferably, the present invention provides a distillation vessel for treating PIPPA waste liquid, wherein the upper surface of the vessel cover is provided with a feed inlet, a vacuum port, a steam outlet, an inert gas inlet, an exhaust port, a thermometer port, a pressure gauge port, and a manhole.

[0007] Preferably, the present invention provides a distillation vessel for treating PIPPA waste liquid, wherein the outer surface of the jacket is provided with several support seats.

[0008] Preferably, the present invention provides a distillation vessel for treating PIPPA waste liquid, wherein the bottom of the jacket is provided with a heat exchange medium inlet, the upper side of the jacket is provided with a heat exchange medium outlet, and the jacket is provided with a plurality of supporting ribs.

[0009] Preferably, the distillation vessel for treating PIPPA waste liquid provided by this utility model has a reinforcing plate provided at the connection between the stirring shaft and the U-shaped stirring paddle.

[0010] Preferably, the present invention provides a distillation vessel for treating PIPPA waste liquid, wherein a plurality of supporting blades are provided between the U-shaped stirring paddle and the stirring shaft.

[0011] Preferably, the distillation vessel for treating PIPPA waste liquid provided by this utility model is a forward and reverse reversible motor.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The U-shaped agitator is rotatably mounted inside the vessel. Conical protrusions are provided on the outer edges of both sides of the U-shaped agitator to prevent larger materials from adhering to the inner wall of the vessel. A first inclined shovel edge extends from the front side of one side of the U-shaped agitator, and a second inclined shovel edge extends from the rear side of the other side of the U-shaped agitator. When the motor reverses, the first and second inclined shovel edges can completely scrape off the residual film formed on the inner wall of the vessel, greatly improving the wall scraping effect and thus ensuring the heat exchange performance of the distillation vessel. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the internal structure of the vessel. Figure 3 For the appendix Figure 2 Enlarged structural diagram of point A (enlarged edge of the U-shaped impeller).

[0014] In the diagram: 1. Vessel body; 2. Vessel cover; 3. Motor; 4. Stirring shaft; 5. U-shaped stirring paddle; 6. Discharge port; 7. Motor base; 8. Conical protrusion; 9. First inclined shovel edge; 10. Second inclined shovel edge; 11. Feed inlet; 12. Vacuum port; 13. Steam outlet; 14. Inert gas inlet; 15. Exhaust port; 16. Thermometer port; 17. Pressure gauge port; 18. Manhole; 19. Jacket; 20. Support base; 21. Heat exchange medium inlet; 22. Heat exchange medium outlet; 23. Support rib; 24. Reinforcing plate; 25. Support blade. Detailed Implementation

[0015] The technical solution of this 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 this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] Please see Figure 1-3 This utility model provides a technical solution: a distillation vessel for treating PIPPA waste liquid, including a vessel body 1, a vessel cover 2, a motor 3, a stirring shaft 4, and a U-shaped stirring paddle 5. A jacket 19 is provided outside the vessel body 1, and several support seats 20 are provided on the outer surface of the jacket 19 to support and fix the entire distillation vessel. A heat exchange medium inlet 21 is provided at the bottom of the jacket 19, and a heat exchange medium outlet 22 is provided on one side of the upper part of the jacket 19. The heat exchange medium inlet 21 and the heat exchange medium outlet 22 are used for the heat exchange medium to enter and leave the jacket 19 to achieve heat exchange with the interior of the vessel body 1. Several support ribs 23 are provided inside the jacket 19 to prevent deformation of the jacket 19. The bottom of the vessel body 1... The vessel body 1 is equipped with a discharge port 6. A vessel cover 2 is provided on the upper surface of the vessel body 1 through a flange. A motor 3 is provided at the center of the upper surface of the vessel cover 2 through a motor base 7. The motor 3 is a forward and reverse motor to realize the forward and reverse rotation of the stirring shaft 4 and the U-shaped stirring paddle 5. The output shaft of the motor 3 is connected to the top of the stirring shaft 4 through a coupling. A U-shaped stirring paddle 5 is provided at the bottom of the stirring shaft 4. A reinforcing plate 24 is provided at the connection between the stirring shaft 4 and the U-shaped stirring paddle 5 to ensure the structural strength between the stirring shaft 4 and the U-shaped stirring paddle 5. Several supporting blades 25 are provided between the U-shaped stirring paddle 5 and the stirring shaft 4 to ensure the supporting strength of the U-shaped stirring paddle 5. The U-shaped stirring paddle 5 is rotatably installed inside the vessel body 1. The upper surface of the vessel lid 2 is equipped with a feed inlet 11, a vacuum port 12, a steam outlet 13, an inert gas inlet 14, an exhaust port 15, a thermometer port 16, a pressure gauge port 17, and a manhole 18. The feed inlet 11 is used to add PIPPA waste liquid. The vacuum port 12 is connected to a vacuum pump and is used to create a vacuum inside the vessel 1 during distillation, thereby lowering the boiling point of the organic solvents in the PIPPA waste liquid. The steam outlet 13 is used to discharge the vapor after the organic solvents have vaporized. The inert gas inlet is used to add inert gas, thereby removing oxygen from the vessel 1 to ensure safe production. The exhaust port 15 is used to exhaust gas to restore the pressure inside the vessel 1. The thermometer port 16 is used to install a thermometer for monitoring the temperature inside the vessel 1. The pressure gauge port 17 is used to install a pressure gauge for monitoring the pressure inside the vessel 1. The manhole 18 allows personnel to enter the vessel 1 for maintenance, repair, or cleaning. The U-shaped stirring paddle 5 has conical protrusions 8 on both outer edges, which are movably connected to the inner wall of the vessel body 1. A first inclined shovel edge 9 is provided on the edge of the front side of one side of the U-shaped stirring paddle 5, and a second inclined shovel edge 10 is provided on the edge of the rear side of the other side of the U-shaped stirring paddle 5. Both the first inclined shovel edge 9 and the second inclined shovel edge 10 are movably connected to the inner wall of the vessel body 1.

[0017] Installation method and operating principle: First, customize a U-shaped stirring paddle 5. The U-shaped stirring paddle 5 adopts a one-piece molding process, with conical protrusions 8 on both outer ends. One side has a first oblique shovel edge 9 pre-reserved on the front side, and the other side has a second oblique shovel edge 10 pre-reserved on the rear side. Weld the U-shaped stirring paddle 5 to the bottom of the stirring shaft 4, and then weld a reinforcing plate 24 at the connection between the stirring shaft 4 and the U-shaped stirring paddle 5. At the same time, weld multiple supporting blades 25 between the inner side of the U-shaped stirring paddle 5 and the stirring shaft 4. Next, connect the top of the stirring shaft 4 to the output shaft of the motor 3. Finally, lift the lid 2 and place the U-shaped stirring paddle 5 into the inside of the vessel body 1. At this time, the conical protrusion 8, the first oblique shovel edge 9, and the second oblique shovel edge 10 of the U-shaped stirring paddle 5 are all in contact with the inner wall of the vessel body 1. During operation, PIPPA waste liquid is fed into the vessel 1 through inlet 11. Stirring is started, and the vacuum pump is activated. A vacuum is created inside the vessel 1 through vacuum port 12. Hot water / oil or hot steam is introduced into the jacket 19 to raise the temperature and stir. Under low pressure, the boiling points of the low-boiling-point organic solvents in the waste liquid decrease significantly, causing them to boil and vaporize at a relatively low temperature. Meanwhile, polymers, resins, and impurities with extremely high boiling points or that are not easily volatile remain at the bottom of the vessel. The vaporized steam is discharged from steam outlet 13 and enters the subsequent condenser. During distillation, the U-shaped stirring paddle 5 rotates in the direction of the conical protrusion 8 (see attached diagram). Figure 2(Counterclockwise direction), with the first inclined shovel edge 9 and the second inclined shovel edge 10 facing backwards, a thin film of material may form on the inner wall of the vessel body 1. After distillation, the viscous polymer residue remaining at the bottom of the vessel body 1 is discharged from the outlet 6. At this time, the motor 3 reverses, making the first inclined shovel edge 9 and the second inclined shovel edge 10 face forwards (see attached diagram). Figure 2 (In a clockwise direction), the film adhering to the inner wall of the vessel 1 is scraped off and discharged from the discharge port. This utility model has a reasonable structure. The U-shaped stirring paddle 5 is rotatably installed inside the vessel 1. Conical protrusions 8 are provided on the outer edges of both sides of the U-shaped stirring paddle 5. The conical protrusions 8 prevent larger materials from adhering to the inner wall of the vessel 1. A first inclined scraper edge 9 is provided on the front side edge of one side of the U-shaped stirring paddle 5, and a second inclined scraper edge 10 is provided on the rear side edge of the other side of the U-shaped stirring paddle 5. When the motor 3 reverses, the residual film formed by the first inclined scraper edge 9 and the second inclined scraper edge 10 can be completely scraped off through the first inclined scraper edge 9 and the second inclined scraper edge 10, which greatly improves the wall scraping effect and ensures the heat exchange performance of the distillation vessel.

[0018] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0019] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A distillation vessel for treating PIPPA waste liquid, characterized in that: The vessel includes a vessel body (1), a vessel cover (2), a motor (3), a stirring shaft (4), and a U-shaped stirring paddle (5). The vessel body (1) is provided with a jacket (19) on the outside. The vessel body (1) is provided with a discharge port (6) at the bottom. The vessel cover (2) is provided on the upper surface of the vessel body (1) through a flange. The motor (3) is provided at the center of the upper surface of the vessel cover (2) through a motor seat (7). The output shaft of the motor (3) is connected to the top of the stirring shaft (4) through a coupling. The bottom of the stirring shaft (4) is provided with a U-shaped stirring paddle (5). The U-shaped stirring paddle (5) is rotatably located inside the vessel body (1). The U-shaped stirring paddle (5) has conical protrusions (8) on both sides of its outer edge. The conical protrusions (8) are in movable contact with the inner wall of the vessel body (1). A first oblique shovel edge (9) is extended from the edge of the front side of one side of the U-shaped stirring paddle (5), and a second oblique shovel edge (10) is extended from the edge of the rear side of the other side of the U-shaped stirring paddle (5). Both the first oblique shovel edge (9) and the second oblique shovel edge (10) are in movable contact with the inner wall of the vessel body (1).

2. The distillation vessel for treating PIPPA waste liquid according to claim 1, characterized in that: The upper surface of the lid (2) is provided with a feed inlet (11), a vacuum port (12), a steam outlet (13), an inert gas inlet (14), an exhaust port (15), a thermometer port (16), a pressure gauge port (17), and a manhole (18).

3. The distillation vessel for treating PIPPA waste liquid according to claim 1, characterized in that: The outer surface of the jacket (19) is provided with several support seats (20).

4. The distillation vessel for treating PIPPA waste liquid according to claim 1, characterized in that: The jacket (19) has a heat exchange medium inlet (21) at the bottom and a heat exchange medium outlet (22) on one side of the upper part of the jacket (19). The jacket (19) has several support ribs (23) inside.

5. The distillation vessel for treating PIPPA waste liquid according to claim 1, characterized in that: A reinforcing plate (24) is provided at the connection between the stirring shaft (4) and the U-shaped stirring paddle (5).

6. The distillation vessel for treating PIPPA waste liquid according to claim 1, characterized in that: Several supporting blades (25) are provided between the U-shaped stirring paddle (5) and the stirring shaft (4).

7. The distillation vessel for treating PIPPA waste liquid according to claim 1, characterized in that: The motor (3) is a forward and reverse reversible motor.

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