Efficient separation and purification device for synthesis of methyl isopentenoate

Abstract

The utility model relates to the technical field of separation and purification, and discloses an efficient separation and purification device for synthesizing methyl isopentenoate, which comprises a tower shell, an L-shaped plate is fixedly connected to the outer wall of the tower shell, a motor is fixedly connected to the outer wall of the L-shaped plate, the output end of the motor is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with the tower shell. A driving bevel gear is fixedly connected to the outer wall of the rotating shaft, a plurality of fixing rods are fixedly connected to the inner wall of the tower shell, a mounting disc is fixedly connected to one ends of the fixing rods, a center shaft is rotatably connected to the top of the mounting disc, and a driven bevel gear is fixedly connected to the bottom of the center shaft; the outer wall of the center shaft is rotationally connected with a rotating sleeve. According to the utility model, the guide vanes are driven by the motor to efficiently guide gas and liquid to spirally flow and guide the gas and liquid to flow along a designed path in the rotating process, so that the residence time in the tower is prolonged, more sufficient mass and heat transfer is promoted, and meanwhile, the gas-liquid bias flow phenomenon can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of separation and purification technology, and in particular to a high-efficiency separation and purification device for the synthesis of methyl isopentenyl ester. Background Technology

[0002] Methyl isoprene is typically a colorless, transparent liquid with a distinctive odor. It is an important organic synthesis intermediate with wide applications in the pharmaceutical, fragrance, and pesticide industries. In pharmaceuticals, it can be used to synthesize bioactive compounds. In the fragrance industry, it serves as a raw material for synthesizing fragrances and is used to formulate flavorings with unique aromas. In pesticides, it can be used to prepare pesticide intermediates. By removing impurities, the purity of methyl isoprene can be improved, thus meeting the high-quality requirements of different application areas. High-purity methyl isoprene ensures product stability, safety, and precise chemical properties, avoiding the adverse effects of impurities on subsequent reactions and product performance.

[0003] In the early synthesis of methyl isoprene, simple distillation was often used for separation and purification. The reaction mixture was placed in a distillation apparatus, and based on the difference in boiling points between methyl isoprene and impurities, the heating temperature was controlled to cause the methyl isoprene to vaporize first, followed by condensation and collection. This method was only suitable when the boiling points of the impurities and methyl isoprene differed significantly. With the development of science and technology, methyl isoprene is now separated in fractionation towers. The mixture is heated to a certain temperature in the fractionation tower, causing the components to vaporize and rise sequentially according to their boiling points. During this ascent, the components react with the contents of the tower... In traditional fractionation towers, heat and mass exchange occur between the liquid and the condenser. Components with higher boiling points condense and reflux at lower positions within the tower, while methyl isoprene, with a lower boiling point, escapes as a gas at the top or higher positions. After condensation, it is collected, thus achieving separation from impurities with different boiling points. However, in traditional fractionation tower equipment, uneven gas-liquid distribution can easily occur after the raw material enters the tower due to the inlet structure and internal components. This can lead to excessive gas-liquid flow rates and over-mass transfer in some areas, while insufficient gas-liquid flow rates and inadequate mass transfer in others, affecting the overall separation effect and production efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-efficiency separation and purification device for the synthesis of methyl isoprene, aiming to improve the problem in the prior art where uneven gas-liquid distribution easily occurs after the raw materials enter the tower due to the influence of the inlet structure and internal components of the tower. This leads to excessive gas-liquid flow and excessive mass transfer in some areas, while insufficient gas-liquid flow and insufficient mass transfer in other areas, affecting the overall separation effect and production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency separation and purification device for the synthesis of methyl isoprene, comprising a tower shell, an L-shaped plate fixedly connected to the outer wall of the tower shell, a motor fixedly connected to the outer wall of the L-shaped plate, a rotating shaft fixedly connected to the output end of the motor, a driving bevel gear fixedly connected to the outer wall of the rotating shaft, multiple fixing rods fixedly connected to the inner wall of the tower shell, an installation plate fixedly connected to one end of each fixing rod, a central shaft rotatably connected to the top of the installation plate, a driven bevel gear fixedly connected to the bottom of the central shaft, a rotating sleeve rotatably connected to the outer wall of the central shaft, the outer wall of the rotating sleeve rotatably connected to one end of the rotating shaft, multiple guide vanes fixedly connected to the outer wall of the central shaft, and a three-dimensional spray packing mechanism provided in the middle of the inner wall of the tower shell, the three-dimensional spray packing mechanism being used to increase the mass transfer area.

[0006] The above technical solution involves: an L-shaped plate fixedly connected to the outer wall of the tower shell; a motor fixedly connected to the outer wall of the L-shaped plate; a rotating shaft fixedly connected to the output end of the motor; a driving bevel gear fixedly connected to the outer wall of the rotating shaft; multiple fixing rods fixed to the inner wall of the tower shell; an installation plate fixedly connected to one end of each fixing rod; a central shaft rotatably connected to the top of the installation plate; a driven bevel gear fixedly connected to the bottom of the central shaft; a rotating sleeve rotatably connected to the outer wall of the central shaft; and a linkage mechanism formed by rotatably connecting the outer wall of the rotating sleeve to one end of the rotating shaft. Multiple guide vanes are fixedly connected to the outer wall of the central shaft, and these guide vanes guide the airflow within the tower shell.

[0007] As a further description of the above technical solution:

[0008] The three-dimensional spraying packing mechanism includes a grid plate, the outer wall of which is fixedly connected to the middle of the inner wall of the tower shell. A frame is provided on the top of the grid plate, and multiple corrugated plates are fixedly connected to the middle of the frame. A three-dimensional spraying unit is provided in the middle of the frame, and multiple fixing piles are fixedly connected to the top of the frame. Multiple packing layers are provided on the outer wall of the fixing piles, and nuts are threaded to the upper end of the fixing piles.

[0009] The above technical solution ensures the stability of the grid plate inside the tower shell by fixing the outer wall of the grid plate to the middle of the inner wall of the tower shell. A frame is set on the top of the grid plate, which provides additional support for the entire structure. Multiple corrugated plates are fixedly connected in the middle of the frame, and a three-dimensional spraying unit is set in the middle of the frame. Multiple fixing piles are fixedly connected to the top of the frame. Multiple packing layers are set on the outer wall of the fixing piles. The packing layers increase the contact area of ​​the packing and improve the efficiency and uniformity of the packing. Nuts are threaded to the upper end of the fixing piles to prevent the packing layers from misaligning and deforming under the impact of gas and liquid flow.

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

[0011] The top of the tower shell is provided with a gas outlet, and the lower end of the outer wall of the tower shell is provided with a material inlet.

[0012] The above technical solution involves: a gas outlet at the top of the tower shell to facilitate the discharge of gas generated inside the tower, and a material inlet at the lower part of the outer wall of the tower shell to facilitate the entry of materials into the tower for processing.

[0013] As a further description of the above technical solution:

[0014] A liquid inlet is provided in the middle of the outer wall of the tower shell, a discharge port is provided at the bottom of the tower shell, and an observation hole is provided at the lower end of the outer wall of the tower shell.

[0015] The above technical solution includes: a liquid inlet in the middle of the outer wall of the tower shell, allowing liquid materials to be added into the reaction tower; a discharge port at the bottom of the tower shell, ensuring that the processed materials can be discharged smoothly; and an observation hole at the lower end of the outer wall of the tower shell, allowing for direct observation of the material flow inside the tower.

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

[0017] The outer wall of the tower shell is equipped with a controller and multiple instrument interfaces.

[0018] The above technical solution involves: the outer wall of the tower shell is equipped with a controller for real-time monitoring and adjustment of the operating parameters inside the tower; the outer wall of the tower shell is provided with multiple instrument interfaces, which can be connected to various measuring devices to ensure precise control of the process inside the tower.

[0019] As a further description of the above technical solution:

[0020] The bottom surface of the tower shell is provided with multiple support legs, and the multiple tower shells are fixedly connected by flanges.

[0021] Through the above technical solution: the bottom surface of the tower shell is provided with multiple legs, which provide solid support for the tower shell, help to distribute the weight, thereby reducing the pressure on the ground. Multiple tower shells are fixedly connected by flanges, which enhances the stability and durability of the entire structure.

[0022] As a further description of the above technical solution:

[0023] Multiple brackets are fixedly connected to the top of the gas outlet, and a waterproof plate is fixedly connected to the top of each bracket.

[0024] The above technical solution involves fixing multiple supports to the top of the tower shell, which provide a stable foundation for the waterproof membrane. The waterproof membrane is designed to prevent rainwater from seeping into the gas outlet and ensure the normal operation of the equipment.

[0025] As a further description of the above technical solution:

[0026] The fixed pile is provided with multiple gaskets in the middle, and the outer wall of the rotating shaft is provided with a protective tube.

[0027] The above technical solution uses gaskets to adjust the spacing between each packing layer and protective tubes to protect the internal transmission mechanism and extend the equipment's lifespan.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the motor is started, and the motor drives the rotating shaft to rotate. The central shaft is set in the middle of the tower shell through a fixed rod and a mounting plate. A driven bevel gear is fixedly connected to the outer wall of the central shaft. The driven bevel gear meshes with the driving bevel gear, that is, the central shaft rotates. Multiple guide vanes are fixedly connected to the outer wall of the central shaft. During the rotation, the guide vanes efficiently guide the gas and liquid to flow in a spiral. A specific distance is maintained between adjacent vanes to ensure the smooth passage of gas and liquid, and to form an effective guide channel to guide the gas and liquid to flow along the designed path, prolong the residence time in the tower, promote more complete mass and heat transfer, and at the same time effectively avoid the phenomenon of gas-liquid flow deviation.

[0030] 2. In this utility model, the corrugated plate is wavy, and adjacent corrugated plates are stacked at a certain angle to form a regular gas-liquid mass transfer channel, providing a path for gas-liquid flow, increasing the chance of gas-liquid contact, and causing the gas and liquid to continuously change their flow direction as they pass through, thus promoting mass and heat transfer. A three-dimensional spray unit is installed on the frame. The three-dimensional spray unit consists of multiple nozzles. When the liquid flows through the three-dimensional spray unit, it is sprayed out at high speed from the three-dimensional spray unit under the impact of the gas and its own gravity, and is dispersed into fine droplets, which greatly increases the gas-liquid contact area. The droplets form an atomization area in the gas-liquid mixed flow, creating favorable conditions for the mass transfer process. The packing layers are fixed by fixing piles to ensure the accurate relative position of each packing layer and prevent misalignment and deformation under the impact of gas-liquid flow. Attached Figure Description

[0031] Figure 1 This is a front perspective view of a high-efficiency separation and purification device for the synthesis of methyl isoprene proposed in this utility model;

[0032] Figure 2 This is a partial structural exploded view of a high-efficiency separation and purification device for the synthesis of methyl isoprene proposed in this utility model;

[0033] Figure 3 This is a partial structural diagram of a high-efficiency separation and purification device for the synthesis of methyl isoprene proposed in this utility model;

[0034] Figure 4This is a partial structural exploded view of a high-efficiency separation and purification device for the synthesis of methyl isoprene proposed in this utility model;

[0035] Figure 5 This is a partial structural breakdown diagram of a high-efficiency separation and purification device for the synthesis of methyl isopentenyl ester proposed in this utility model.

[0036] Legend:

[0037] 1. Tower shell; 2. Three-dimensional spraying packing mechanism; 201. Grid plate; 202. Corrugated plate; 203. Three-dimensional spraying unit; 204. Packing layer; 205. Fixing pile; 206. Nut; 207. Frame; 3. L-shaped plate; 4. Motor; 5. Rotating shaft; 6. Driving bevel gear; 7. Fixing rod; 8. Mounting plate; 9. Central shaft; 10. Rotating sleeve; 11. Driven bevel gear; 12. Guide vane; 13. Gas outlet; 14. Liquid inlet; 15. Material inlet; 16. Observation hole; 17. Controller; 18. Support leg; 19. Instrument interface; 20. Flange; 21. Waterproof membrane; 22. Bracket; 23. Discharge port; 24. Protective pipe; 25. Gasket. Detailed Implementation

[0038] 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.

[0039] Please see the appendix Figure 1 - Appendix Figure 3 An embodiment of this utility model provides: a high-efficiency separation and purification device for the synthesis of methyl isoprene, comprising a tower shell 1, an L-shaped plate 3 fixedly connected to the outer wall of the tower shell 1, a motor 4 fixedly connected to the outer wall of the L-shaped plate 3, a rotating shaft 5 fixedly connected to the output end of the motor 4, a driving bevel gear 6 fixedly connected to the outer wall of the rotating shaft 5, multiple fixing rods 7 fixedly connected to the inner wall of the tower shell 1, an installation plate 8 fixedly connected to one end of the fixing rod 7, a central shaft 9 rotatably connected to the top of the installation plate 8, a driven bevel gear 11 fixedly connected to the bottom of the central shaft 9, a rotating sleeve 10 rotatably connected to the outer wall of the central shaft 9, the outer wall of the rotating sleeve 10 rotatably connected to one end of the rotating shaft 5, multiple guide vanes 12 fixedly connected to the outer wall of the central shaft 9, and a three-dimensional jet packing mechanism 2 provided in the middle of the inner wall of the tower shell 1, the three-dimensional jet packing mechanism 2 being used to increase the mass transfer area;

[0040] Specifically, an L-shaped plate 3 is fixedly connected to the outer wall of the tower shell 1, a motor 4 is fixedly connected to the outer wall of the L-shaped plate 3, a rotating shaft 5 is fixedly connected to the output end of the motor 4, a driving bevel gear 6 is fixedly connected to the outer wall of the rotating shaft 5, multiple fixing rods 7 are fixedly fixed to the inner wall of the tower shell 1, an installation plate 8 is fixedly connected to one end of the fixing rod 7, a central shaft 9 is rotatably connected to the top of the installation plate 8, a driven bevel gear 11 is fixedly connected to the bottom of the central shaft 9, a rotating sleeve 10 is rotatably connected to the outer wall of the central shaft 9, and the outer wall of the rotating sleeve 10 is rotatably connected to one end of the rotating shaft 5 to form a linkage mechanism, and multiple guide vanes 12 are fixedly connected to the outer wall of the central shaft 9. The guide vanes 12 play the role of guiding airflow inside the tower shell 1.

[0041] Please see the appendix Figure 4 - Appendix Figure 5 The three-dimensional spraying packing mechanism 2 includes a grid plate 201. The outer wall of the grid plate 201 is fixedly connected to the middle of the inner wall of the tower shell 1. A frame 207 is provided on the top of the grid plate 201. Multiple corrugated plates 202 are fixedly connected to the middle of the frame 207. A three-dimensional spraying unit 203 is provided in the middle of the frame 207. Multiple fixing piles 205 are fixedly connected to the top of the frame 207. Multiple packing layers 204 are provided on the outer wall of the fixing piles 205. Nuts 206 are threadedly connected to the upper end of the fixing piles 205.

[0042] Specifically, the outer wall of the grid plate 201 is fixedly connected to the middle of the inner wall of the tower shell 1, ensuring the stability of the grid plate 201 inside the tower shell 1. A frame 207 is set on the top of the grid plate 201, which provides additional support for the entire structure. Multiple corrugated plates 202 are fixedly connected in the middle of the frame 207. A three-dimensional spraying unit 203 is set in the middle of the frame 207. Multiple fixing piles 205 are fixedly connected to the top of the frame 207. Multiple packing layers 204 are set on the outer wall of the fixing piles 205. The packing layers 204 increase the contact area of ​​the packing and improve the efficiency and uniformity of the packing. Nuts 206 are threadedly connected to the upper end of the fixing piles 205 to prevent the packing layers 204 from misaligning and deforming under the impact of gas and liquid flow.

[0043] Please see the appendix Figure 1 - Appendix Figure 3 The top of the tower shell 1 is provided with a gas outlet 13, the lower end of the outer wall of the tower shell 1 is provided with a material inlet 15, the middle of the outer wall of the tower shell 1 is provided with a liquid inlet 14, the bottom of the tower shell 1 is provided with a discharge port 23, the lower end of the outer wall of the tower shell 1 is provided with an observation hole 16, the outer wall of the tower shell 1 is provided with a controller 17, and the outer wall of the tower shell 1 is provided with multiple instrument interfaces 19.

[0044] Specifically, a gas outlet 13 is provided at the top of the tower shell 1 to facilitate the discharge of gases generated inside the tower. A material inlet 15 is provided at the lower part of the outer wall of the tower shell 1 to facilitate the entry of materials into the tower for processing. A liquid inlet 14 is provided in the middle of the outer wall of the tower shell 1 to allow liquid materials to be added into the reaction tower. A discharge port 23 is provided at the bottom of the tower shell 1 to ensure that the processed materials can be discharged smoothly. An observation hole 16 is provided at the lower end of the outer wall of the tower shell 1 to visually observe the material flow inside the tower. A controller 17 is provided on the outer wall of the tower shell 1 for real-time monitoring and adjustment of the operating parameters inside the tower. Multiple instrument interfaces 19 are provided on the outer wall of the tower shell 1 to connect various measuring devices to ensure precise control of the process inside the tower.

[0045] Please see the appendix Figure 3 - Appendix Figure 5 The bottom surface of the tower shell 1 is provided with multiple support legs 18, and multiple tower shells 1 are fixedly connected by flanges 20; the top of the gas outlet 13 is fixedly connected with multiple brackets 22, and the top of the brackets 22 is fixedly connected with a waterproof plate 21; multiple gaskets 25 are provided in the middle of the fixed pile 205, and a protective pipe 24 is provided on the outer wall of the rotating shaft 5.

[0046] Specifically, the bottom surface of the tower shell 1 is provided with multiple support legs 18, which provide sturdy support for the tower shell 1, help to distribute the weight, and thus reduce the pressure on the ground. Multiple tower shells 1 are fixedly connected by flanges 20, which enhances the stability and durability of the entire structure. Multiple brackets 22 are fixedly connected to the top of the tower shell 1, which provide a stable foundation for the waterproof plate 21. The waterproof plate 21 is to prevent rainwater from penetrating into the gas outlet 13 and ensure the normal operation of the equipment. Gaskets 25 are used to adjust the spacing of each packing layer 204, and protective tubes 24 are used to protect the internal transmission mechanism and extend the service life of the equipment.

[0047] Working principle: Start motor 4, motor 4 drives rotating shaft 5 to rotate. Central shaft 9 is set in the middle of tower shell 1 through fixed rod 7 and mounting plate 8. Driven bevel gear 11 is fixedly connected to the outer wall of central shaft 9. Driven bevel gear 11 meshes with driving bevel gear 6, that is, central shaft 9 rotates. Multiple guide vanes 12 are fixedly connected to the outer wall of central shaft 9. During the rotation, the guide vanes 12 efficiently guide the gas and liquid to flow in a spiral. A specific distance is maintained between adjacent vanes to ensure smooth passage of gas and liquid, and to form an effective guide channel to guide the gas and liquid to flow along the designed path, prolong the residence time in the tower, promote more complete mass and heat transfer, and at the same time effectively avoid gas-liquid flow deviation.

[0048] The corrugated plate 202 is wavy, and adjacent corrugated plates 202 are stacked at a certain angle to form a regular gas-liquid mass transfer channel, providing a path for gas-liquid flow, increasing the chance of gas-liquid contact, and causing the gas and liquid to continuously change their flow direction as they pass through, thus promoting mass and heat transfer. A three-dimensional spray unit 203 is installed on the frame 207. The three-dimensional spray unit 203 consists of multiple nozzles. When the liquid flows through the three-dimensional spray unit 203, it is sprayed out at high speed from the three-dimensional spray unit 203 under the impact of the gas and its own gravity, and is broken into fine droplets, which greatly increases the gas-liquid contact area. The droplets form an atomization area in the gas-liquid mixed flow, creating favorable conditions for the mass transfer process. The packing layers 204 are fixed by fixing piles 205 to ensure the accurate relative position of each packing layer 204 and prevent misalignment and deformation under the impact of gas-liquid flow.

[0049] 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 high-efficiency separation and purification device for the synthesis of methyl isoprene, comprising a column shell (1), characterized in that: An L-shaped plate (3) is fixedly connected to the outer wall of the tower shell (1). A motor (4) is fixedly connected to the outer wall of the L-shaped plate (3). A rotating shaft (5) is fixedly connected to the output end of the motor (4). An active bevel gear (6) is fixedly connected to the outer wall of the rotating shaft (5). Multiple fixed rods (7) are fixedly connected to the inner wall of the tower shell (1). An installation plate (8) is fixedly connected to one end of the fixed rod (7). A central shaft (9) is rotatably connected to the top of the installation plate (8). A driven bevel gear (11) is fixedly connected to the bottom of the central shaft (9). A rotating sleeve (10) is rotatably connected to the outer wall of the central shaft (9). The outer wall of the rotating sleeve (10) is rotatably connected to one end of the rotating shaft (5). Multiple guide vanes (12) are fixedly connected to the outer wall of the central shaft (9). A three-dimensional spray packing mechanism (2) is provided in the middle of the inner wall of the tower shell (1). The three-dimensional spray packing mechanism (2) is used to increase the mass transfer area.

2. The high-efficiency separation and purification device for the synthesis of methyl isoprene according to claim 1, characterized in that: The three-dimensional spraying packing mechanism (2) includes a grid plate (201), the outer wall of the grid plate (201) is fixedly connected to the middle of the inner wall of the tower shell (1), a frame (207) is provided on the top of the grid plate (201), a plurality of corrugated plates (202) are fixedly connected to the middle of the frame (207), a three-dimensional spraying unit (203) is provided in the middle of the frame (207), a plurality of fixed piles (205) are fixedly connected to the top of the frame (207), a plurality of packing layers (204) are provided on the outer wall of the fixed piles (205), and a nut (206) is threadedly connected to the upper end of the fixed piles (205).

3. The high-efficiency separation and purification device for the synthesis of methyl isoprene according to claim 1, characterized in that: The top of the tower shell (1) is provided with a gas outlet (13), and the lower end of the outer wall of the tower shell (1) is provided with a material inlet (15).

4. The high-efficiency separation and purification device for the synthesis of methyl isoprene according to claim 1, characterized in that: A liquid inlet (14) is provided in the middle of the outer wall of the tower shell (1), a discharge port (23) is provided at the bottom of the tower shell (1), and an observation hole (16) is provided at the lower end of the outer wall of the tower shell (1).

5. The high-efficiency separation and purification device for the synthesis of methyl isoprene according to claim 1, characterized in that: The outer wall of the tower shell (1) is provided with a controller (17) and multiple instrument interfaces (19).

6. The high-efficiency separation and purification device for the synthesis of methyl isopentenyl ester according to claim 1, characterized in that: The bottom surface of the tower shell (1) is provided with multiple legs (18), and the multiple tower shells (1) are fixedly connected by flanges (20).

7. The high-efficiency separation and purification device for the synthesis of methyl isoprene according to claim 3, characterized in that: The top of the gas outlet (13) is fixedly connected to a plurality of brackets (22), and the top of the brackets (22) is fixedly connected to a waterproof plate (21).

8. The high-efficiency separation and purification device for the synthesis of methyl isoprene according to claim 2, characterized in that: The fixed pile (205) is provided with multiple gaskets (25) in the middle, and the outer wall of the rotating shaft (5) is provided with a protective tube (24).

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