Lactone distillation kettle

Abstract

The utility model relates to the technical field of distillation, and discloses a lactone distillation kettle which comprises an inner kettle and an outer kettle, a cooling chamber is formed between the inner kettle and the outer kettle, a cooling coil is wound in the cooling chamber, and the inner wall of the inner kettle is rotatably connected with a rotating rod. The stirring rod and the heating rod are driven by the rotating rod to stir, so that materials can be in full contact mixing, mass transfer, heat transfer or reaction processes, additional heat can be provided by adding the heating rod, the temperature borne by the materials in the distillation process can be kept uniform, and the reaction efficiency and the product quality are improved; cooling water is pumped into the cooling coil pipe through the circulating pump, the flowing cooling water can quickly cool materials in the inner kettle to maintain the stability of a product and prevent possible side reactions, meanwhile, the inner kettle can also be quickly cooled without influencing subsequent use, and water with heat can be pumped into the cold water tank again, so that the cooling effect is good. And then cooling by the cooler can be repeatedly used, so that the cooling cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation, in particular to a lactone distillation kettle. Background Art

[0002] A still, also known as a distiller or still, is a key piece of equipment used to separate liquid mixtures in chemical production. The lactone still is particularly suitable for handling some special chemicals, such as 1,3-propane sultone, which may require repeated distillation steps to achieve the required purity standards during the preparation process. Due to its high boiling point and the solid residue that may be produced, the use of a specially designed lactone still can more effectively handle these substances and reduce the problem of intermittent maintenance and cleaning during the production process.

[0003] A Chinese patent discloses a high-efficiency distillation kettle, with the publication number CN219646731U, comprising a distillation kettle body, a driving mechanism and a high-efficiency stirring mechanism, a feeding pipe is arranged on the distillation kettle body, a discharging pipe is connected to the bottom of the distillation kettle body, a control ball valve is installed on the discharging pipe, a shielding circular plate is arranged in the control ball valve, a control rotating rod is fixedly connected to the shielding circular plate, the driving mechanism comprises a rotating support shaft, a fixed support sleeve is sleeved on the rotating support shaft, and a transmission worm is installed on the fixed support sleeve. The high-efficiency stirring mechanism comprises a left transmission rod and a right transmission rod, a plurality of evenly distributed first stirring plates are installed on the left transmission rod, a plurality of evenly distributed second stirring plates are installed on the right transmission rod, and the plurality of first stirring plates are staggered with the plurality of second stirring plates.

[0004] The above-mentioned distillation kettle can efficiently distill the material, improve the distillation efficiency, and thus shorten the distillation time. However, when the distillation kettle is distilling, the material in the kettle is not heated evenly, resulting in insufficient distillation of the material. It is necessary to extend the processing time to improve the degree of distillation of the material, reduce the production speed, and the distillation kettle needs to be cooled for a long time after use, which affects subsequent use. For this reason, it is necessary to provide a lactone distillation kettle. Utility Model Content

[0005] The purpose of the utility model is to provide a lactone distillation kettle to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lactone distillation kettle, comprising an inner kettle and an outer kettle, the outer kettle is fixedly sleeved on the inner kettle, a cooling chamber is formed between the inner kettle and the outer kettle, a cooling coil is wound in the cooling chamber, a cold water tank is arranged at the rear end of the outer kettle, a circulating pump is fixedly arranged on the cold water tank, a water inlet pipe of the circulating pump passes through the cold water tank, a water inlet of the cooling coil passes through the cooling chamber and is communicated with a water outlet pipe of the circulating pump, a water outlet of the cooling coil passes through the cooling chamber and extends into the cold water tank, a cooler is fixedly arranged on one side of the cold water tank; a rotating rod is rotatably connected to the inner wall of the inner kettle, a first fixed sleeve is fixedly sleeved on the rotating rod, a stirring rod is fixedly arranged on the first fixed sleeve, a heating rod is fixedly arranged on one end of the stirring rod, a second fixed sleeve is fixedly arranged on the rotating rod, a connecting rod is fixedly arranged on the second fixed sleeve, and a scraper plate is fixedly arranged on one end of the connecting rod.

[0007] Preferably, a driving motor is fixedly arranged on the inner kettle, and a rotating shaft of the driving motor rotatably penetrates through the inner kettle and is fixedly connected to the top end surface of the rotating rod.

[0008] Preferably, a bottom plate is provided under the inner kettle, the cold water tank is fixedly arranged on the bottom plate, a water injection pipe is connected to the cold water tank, and supporting legs are fixedly arranged on the outer kettle, and the bottom end surfaces of the supporting legs are fixedly connected to the bottom plate.

[0009] Preferably, a feed inlet is provided on the inner kettle, a feed pipe is fixedly provided on the inner wall of the feed inlet, and a sealing cover is threadedly connected to the feed pipe.

[0010] Preferably, a discharge port is provided on the bottom end surface of the inner kettle, a discharge pipe is fixedly provided on the inner wall of the discharge port, and a control valve is fixedly provided in the discharge pipe.

[0011] Preferably, an exhaust port is provided on the inner kettle, and an exhaust pipe is fixedly provided on the inner wall of the exhaust port.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1) The lactone distillation kettle drives the stirring rod and the heating rod to rotate through the rotating rod. The stirring rod and the heating rod can stir the materials so that the materials can fully contact to complete the mixing, mass transfer, heat transfer or reaction process. The addition of the heating rod can provide additional heat, which helps to keep the temperature of the materials uniform during the distillation process, thereby improving the reaction efficiency and product quality.

[0014] 2) The lactone distillation kettle starts the circulation pump so that the cooling water in the cold water tank can be pumped into the cooling coil. The cooling water flowing in the cooling coil can quickly cool down the materials in the inner kettle to maintain the stability of the product and prevent possible side reactions. At the same time, the inner kettle can also be cooled quickly without affecting subsequent use. The water with heat will be pumped back into the cold water tank and then reused after being cooled by the cooler, reducing cooling costs.

[0015] 3) The lactone distillation kettle rotates by driving the scraper plate through the rotating rod. The scraper plate can scrape off the material attached to the inner wall of the inner kettle to prevent the material from scaling on the heating surface, thereby keeping the equipment clean, extending the service life, and reducing maintenance costs. At the same time, the scraper plate can improve the heat transfer efficiency and processing capacity of the material during the distillation process, while reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the three-dimensional structure of a lactone distillation kettle in an embodiment of the utility model;

[0017] Figure 2 This is a rear view of the three-dimensional structure of a lactone distillation kettle in an embodiment of the utility model;

[0018] Figure 3 It is a three-dimensional structural cross-sectional view of the inner kettle and the outer kettle in the embodiment of the utility model;

[0019] Figure 4 for Figure 3 A magnified view of the structure at center.

[0020] In the figure: 1. inner kettle; 2. outer kettle; 3. supporting legs; 4. bottom plate; 5. inlet pipe; 6. outlet pipe; 7. cooling coil; 8. cold water tank; 9. circulation pump; 10. water injection pipe; 11. cooler; 12. drive motor; 13. rotating rod; 14. first fixed sleeve; 15. stirring rod; 16. heating rod; 17. second fixed sleeve; 18. connecting rod; 19. scraper plate; 20. exhaust pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0022] Combination Figure 1-Figure 4A lactone distillation kettle comprises an inner kettle 1 and an outer kettle 2. The outer kettle 2 is fixedly sleeved on the inner kettle 1. The inner kettle 1 is provided with a feed inlet, a feed pipe 5 is fixedly arranged on the inner wall of the feed inlet, a sealing cover is threadedly connected to the feed pipe 5, a discharge port is provided on the bottom end surface of the inner kettle 1, a discharge pipe 6 is fixedly arranged on the inner wall of the discharge port, a control valve is fixedly arranged in the discharge pipe 6, an exhaust port is provided on the inner kettle 1, and an exhaust pipe 20 is fixedly arranged on the inner wall of the exhaust port.

[0023] See also Figure 2 and Figure 3 , it is further obtained that a cooling chamber is formed between the inner kettle 1 and the outer kettle 2, a cooling coil 7 is wound in the cooling chamber, a cold water tank 8 is arranged at the rear end of the outer kettle 2, a bottom plate 4 is arranged below the inner kettle 1, the cold water tank 8 is fixedly arranged on the bottom plate 4, a water injection pipe 10 is connected to the cold water tank 8, a supporting leg 3 is fixedly arranged on the outer kettle 2, the bottom end surface of the supporting leg 3 is fixedly connected to the bottom plate 4, a circulating pump 9 is fixedly arranged on the cold water tank 8, a water inlet pipe of the circulating pump 9 passes through the cold water tank 8, a water inlet of the cooling coil 7 passes through the cooling chamber and is connected with the water outlet pipe of the circulating pump 9, a water outlet of the cooling coil 7 passes through the cooling chamber and extends into the cold water tank 8, and a cooler 11 is fixedly arranged on one side of the cold water tank 8.

[0024] Specifically, by starting the circulation pump 9, the cooling water in the cold water tank 8 can be pumped into the cooling coil 7. The cooling water flowing in the cooling coil 7 can quickly cool down the material in the inner kettle 1 to maintain the stability of the product and prevent possible side reactions. At the same time, the inner kettle 1 can also be cooled quickly without affecting subsequent use. The water with heat will be pumped back into the cold water tank 8, and then can be reused after being cooled by the cooler 11, thereby reducing cooling costs. Embodiment 2

[0025] See also Figure 3 and Figure 4 , it is further obtained that the inner wall of the inner kettle 1 is rotatably connected with a rotating rod 13, a driving motor 12 is fixedly arranged on the inner kettle 1, the rotating shaft of the driving motor 12 rotatably penetrates the inner kettle 1, and is fixedly connected to the top surface of the rotating rod 13, a first fixed sleeve 14 is fixedly arranged on the rotating rod 13, a stirring rod 15 is fixedly arranged on the first fixed sleeve 14, a heating rod 16 is fixedly arranged at one end of the stirring rod 15, a second fixed sleeve 17 is fixedly arranged on the rotating rod 13, a connecting rod 18 is fixedly arranged on the second fixed sleeve 17, and a scraper plate 19 is fixedly arranged at one end of the connecting rod 18.

[0026] Specifically, the rotating rod 13 drives the stirring rod 15 and the heating rod 16 to rotate, and the stirring rod 15 and the heating rod 16 can stir the materials so that the materials can fully contact each other to complete the mixing, mass transfer, heat transfer or reaction process. The addition of the heating rod 16 can provide additional heat, which helps to maintain a uniform temperature of the materials during the distillation process, thereby improving the reaction efficiency and product quality; the rotating rod 13 drives the scraper plate 19 to rotate, and the scraper plate 19 can scrape off the materials attached to the inner wall of the inner kettle 1 to prevent the materials from scaling on the heating surface, thereby keeping the equipment clean, extending its service life, and reducing maintenance costs. At the same time, the scraper plate 19 can improve the heat transfer efficiency and processing capacity of the materials during the distillation process, while reducing energy consumption.

[0027] In actual operation, the material is poured into the inner kettle 1 through the feed pipe 5, and then the drive motor 12 is started to rotate the rotating rod 13, and the rotating rod 13 drives the first fixed sleeve 14 to rotate, and the first fixed sleeve 14 drives the stirring rod 15 and the heating rod 16 to rotate. The stirring rod 15 and the heating rod 16 can stir the material so that the material can fully contact to complete the mixing, mass transfer, heat transfer or reaction process. The addition of the heating rod 16 can provide additional heat, which helps to keep the temperature of the material uniform during the distillation process, thereby improving the reaction efficiency and product quality.

[0028] After the distillation is finished, the material is discharged by opening the valve of the discharge pipe 6, and at the same time, the rotating rod 13 drives the second fixed sleeve 17 to rotate, and the second fixed sleeve 17 drives the scraper plate 19 to rotate through the connecting rod 18. The scraper plate 19 can scrape the material attached to the inner wall of the inner kettle 1 to prevent the material from scaling on the heating surface, thereby keeping the equipment clean, extending the service life, and reducing maintenance costs. At the same time, the scraper plate 19 can improve the heat transfer efficiency and processing capacity of the material during the distillation process, while reducing the energy consumption;

[0029] After the distillation is completed, the circulation pump 9 can be started so that the cooling water in the cold water tank 8 can be pumped into the cooling coil 7. The cooling water flowing in the cooling coil 7 can quickly cool down the material in the inner kettle 1 to maintain the stability of the product and prevent possible side reactions. At the same time, the inner kettle 1 can also be cooled quickly without affecting subsequent use. The water with heat will be pumped back into the cold water tank 8 and then reused after being cooled by the cooler 11, thereby reducing cooling costs.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lactone distillation kettle, comprising an inner kettle (1) and an outer kettle (2), characterized in that: The outer kettle (2) is fixedly sleeved on the inner kettle (1), a cooling chamber is formed between the inner kettle (1) and the outer kettle (2), a cooling coil (7) is wound in the cooling chamber, a cold water tank (8) is provided at the rear end of the outer kettle (2), a circulating pump (9) is fixedly provided on the cold water tank (8), a water inlet pipe of the circulating pump (9) passes through the cold water tank (8), a water inlet of the cooling coil (7) passes through the cooling chamber and is connected to a water outlet pipe of the circulating pump (9), a water outlet of the cooling coil (7) passes through the cooling chamber and extends into the cold water tank (8), and a cooler (11) is fixedly provided on one side of the cold water tank (8); The inner wall of the inner kettle (1) is rotatably connected to a rotating rod (13); a first fixed sleeve (14) is fixedly sleeved on the rotating rod (13); a stirring rod (15) is fixedly sleeved on the first fixed sleeve (14); a heating rod (16) is fixedly sleeved on one end of the stirring rod (15); a second fixed sleeve (17) is fixedly sleeved on the rotating rod (13); a connecting rod (18) is fixedly sleeved on the second fixed sleeve (17); a scraper plate (19) is fixedly sleeved on one end of the connecting rod (18).

2. A lactone distillation kettle according to claim 1, characterized in that: A driving motor (12) is fixedly arranged on the inner kettle (1), and a rotating shaft of the driving motor (12) passes through the inner kettle (1) and is fixedly connected to the top end surface of the rotating rod (13).

3. A lactone distillation kettle according to claim 1, characterized in that: A bottom plate (4) is provided below the inner kettle (1), the cold water tank (8) is fixedly arranged on the bottom plate (4), a water injection pipe (10) is connected to the cold water tank (8), and a support leg (3) is fixedly arranged on the outer kettle (2), the bottom end surface of the support leg (3) is fixedly connected to the bottom plate (4).

4. A lactone distillation kettle according to claim 1, characterized in that: The inner kettle (1) is provided with a feed inlet, and a feed inlet pipe (5) is fixedly arranged on the inner wall of the feed inlet, and a sealing cover is threadedly connected to the feed inlet pipe (5).

5. A lactone distillation kettle according to claim 1, characterized in that: The bottom end surface of the inner kettle (1) is provided with a discharge port, the inner wall of the discharge port is fixedly provided with a discharge pipe (6), and a control valve is fixedly provided inside the discharge pipe (6).

6. A lactone distillation kettle according to claim 1, characterized in that: The inner kettle (1) is provided with an exhaust port, and an exhaust pipe (20) is fixedly arranged on the inner wall of the exhaust port.

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