External rectifying tower of esterification kettle

Abstract

The utility model discloses a rectifying tower externally connected with an esterification kettle, relates to the technical field of reaction kettles, and solves the problems that pipelines are connected with the esterification kettle and the rectifying tower through flanges, the disassembly is complicated, the efficiency is low, the production schedule is seriously influenced, and the actual requirements of efficient chemical production are difficult to meet. And inlet and outlet pipes communicated with the esterification kettle and one side of the rectifying tower are fixed at the bottom of the esterification kettle and one side of the rectifying tower. Through the design of the connecting assembly, the pipeline between the esterification kettle and the rectifying tower can be quickly dismounted and mounted. The pull rod is pulled to drive the moving rod to move, so that the moving rod is far away from the inlet and outlet pipe and the compression spring, and the connecting assembly can be disassembled by moving the fixed pipe downwards, thereby quickly disassembling and transversely cleaning the pipeline, effectively preventing scaling on the inner wall of the pipeline from influencing the flow rate, prolonging the service life of the pipeline, and avoiding the problem of tedious disassembly of traditional flange connection. And the production efficiency is greatly improved, and efficient chemical production requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to an external distillation column for esterification reactors. Background Technology

[0002] In the field of chemical production, esterification is a key process for preparing ester compounds. Traditional esterification reactors generally use pipelines to connect the esterification vessel and the distillation column. However, after long-term operation, scale easily accumulates on the inner wall of the pipeline, requiring regular cleaning. Furthermore, because the pipeline is connected to the esterification vessel and distillation column via flanges, disassembly is cumbersome and inefficient, seriously affecting production progress and failing to meet the actual needs of high-efficiency chemical production. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to propose an external distillation column for esterification reactors, which greatly improves production efficiency and meets the needs of high-efficiency chemical production.

[0004] The external distillation column of the esterification vessel proposed in this utility model includes an esterification vessel and a distillation column. The bottom of the esterification vessel and one side of the distillation column are both fixed with inlet and outlet pipes communicating with them. A feed pump is provided between the esterification vessel and the distillation column. The output end and the input end of the feed pump are both fixed with a first connecting pipe, and one end of the first connecting pipe is fixed with a connecting component connected to the inlet and outlet pipes.

[0005] The connecting assembly includes a fixed tube, with guide tubes fixed at both ends of the fixed tube. A movable rod that inserts into the fixed tube and the inlet / outlet tube is movably connected inside the guide tube. A fixed plate located inside the guide tube is fixed to the outer surface of the movable rod. A spring located inside the guide tube is fixed to the outer surface of the movable rod. A pull rod is fixed to the end of the movable rod away from the fixed tube.

[0006] Preferably, a second connecting pipe is fixed at the center of the top of the distillation column, a first condenser is fixed between the second connecting pipes, and a phase separator is fixed at the other end of the second connecting pipe.

[0007] Preferably, a reboiler communicating with one end of the distillation column is fixed, and a distillation outlet is fixed at the center of the bottom of the distillation column.

[0008] Preferably, a stirring motor is fixed at the top center of the esterification reactor, and a stirring shaft is fixed through the rotating end of the stirring motor through the esterification reactor. Several stirring plates are fixed at equal intervals on the outer surface of the stirring shaft.

[0009] Preferably, the top left and right ends of the esterification reactor are respectively fixed with esterification feed ports and a second condenser.

[0010] Preferably, the bottom of the esterification vessel, distillation column, and phase separator is fixed with several support legs in a circular array, which can support the device.

[0011] Preferably, the pipes between the esterification vessel, the distillation column, and the phase separator are all fixed by a connecting assembly, which allows for quick disassembly of the connected pipes.

[0012] Preferably, the end of the moving rod that is in close contact with the distillation column is a slope.

[0013] Preferably, a sealing gasket is provided at the end of the inlet / outlet pipe that abuts against the fixed pipe, thereby increasing the sealing between the inlet / outlet pipe and the connecting assembly.

[0014] The beneficial effects of this invention are as follows: The design of the connecting components allows for the rapid disassembly and installation of pipelines between the esterification reactor and the distillation column. Pulling the lever moves the moving rod away from the inlet and outlet pipes, compressing the spring, and moving the fixed pipe downwards removes the connecting components. This allows for quick disassembly and horizontal cleaning of the pipeline, effectively preventing scale buildup on the inner wall of the pipeline from affecting flow rate, extending pipeline lifespan, avoiding the cumbersome disassembly and reassembly issues of traditional flange connections, greatly improving production efficiency, and meeting the needs of high-efficiency chemical production. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the externally connected distillation column for esterification reactor proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the external distillation column for esterification reactor proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the feed pump delivery structure of the external distillation column for the esterification reactor proposed in this utility model.

[0018] Figure 4 This is a cross-sectional schematic diagram of the connection components of the external distillation column for esterification reactor proposed in this utility model.

[0019] In the diagram: 1. Esterification vessel; 2. Distillation column; 3. Inlet / outlet pipes; 5. Feed pump; 6. First connecting pipe; 7. Connecting assembly; 8. Second connecting pipe; 9. First condenser; 10. Phase separator; 11. Reboiler; 12. Distillation outlet; 13. Stirring motor; 14. Stirring shaft; 15. Stirring plate; 16. Esterification feed port; 17. Second condenser; 18. Support leg; 19. Fixed pipe; 20. Guide pipe; 21. Moving rod; 22. Spring; 23. Pull rod; 24. Fixed plate. Detailed Implementation

[0020] Reference Figures 1-4An externally connected distillation column for esterification reactor includes an esterification reactor 1 and a distillation column 2. The bottom of the esterification reactor 1 and one side of the distillation column 2 are both welded with inlet and outlet pipes 3 that communicate with them. A feed pump 5 is provided between the esterification reactor 1 and the distillation column 2. The output end and input end of the feed pump 5 are both fixed with a first connecting pipe 6, and one end of the first connecting pipe 6 is fixed with a connecting component 7 that connects to the inlet and outlet pipes 3. The esterification reactants inside the esterification reactor 1 can be transported to the inside of the distillation column 2 through the feed pump 5 and the first connecting pipe 6, and the esterification reactants are distilled through the distillation column 2. At the same time, the connecting component 7 can quickly separate it from the inlet and outlet pipes 3 for horizontal cleaning.

[0021] The connecting assembly 7 includes a fixed tube 19, with guide tubes 20 fixed at both ends of the fixed tube 19. A movable rod 21, which is inserted into the fixed tube 19 and the inlet / outlet tube 3, is movably connected inside the guide tube 20. A fixed plate 24 located inside the guide tube 20 is fixed to the outer surface of the movable rod 21, and a spring 22 located inside the guide tube 20 is fixed to the outer surface of the movable rod 21. A pull rod 23 is fixed to the end of the movable rod 21 away from the fixed tube 19. By pulling the pull rod 23, the movable rod 21 is moved away from the inlet / outlet tube 3. The movement of the movable rod 21 causes the fixed plate 24 to move, and at the same time, the movement of the fixed plate 24 compresses the spring 22. At this time, the fixed tube 19 can be removed by moving it downward, so that it can be cleaned quickly, preventing scale buildup on the inner wall from affecting its flow rate and increasing the service life of the pipeline.

[0022] A second connecting pipe 8 is fixed at the center of the top of the distillation column 2. A first condenser 9 is fixed between the second connecting pipes 8. A phase separator 10 is fixed at the other end of the second connecting pipe 8. The distilled fluid flows from the second connecting pipe 8 at the top of the distillation column 2 through the first condenser 9 to cool and condense the distilled fluid into the geothermal phase separator 10.

[0023] One end of the distillation column 2 is fixed with a reboiler 11 connected to it, and the bottom center of the distillation column 2 is fixed with a distillation outlet 12. The esterification reaction products inside the distillation column 2 can be vaporized through the reboiler 11, and the impurities inside the distillation column 2 can be discharged through the distillation outlet 12.

[0024] A stirring motor 13 is fixed at the top center of the esterification reactor 1. The rotating end of the stirring motor 13 passes through the esterification reactor 1 and is fixed with a stirring shaft 14. Several stirring plates 15 are fixed at equal intervals on the outer surface of the stirring shaft 14. The stirring motor 13 is started to drive the stirring shaft 14 to rotate. The rotation of the stirring shaft 14 drives the stirring plates 15 to rotate. At the same time, the rotation of the stirring plates 15 stirs the esterification reactants inside the esterification reactor 1, accelerating the reaction of the esterification reactants.

[0025] The top left and right ends of the esterification reactor 1 are respectively fixed with esterification feed port 16 and second condenser 17.

[0026] The bottom of the esterification vessel 1, the distillation column 2, and the phase separator 10 are fixed with several support legs 18 in a circular array, which can support the device.

[0027] The pipes between the esterification vessel 1, the distillation column 2 and the phase separator 10 are all fixed by the connecting assembly 7, which allows for quick disassembly of the connected pipes.

[0028] The end of the moving rod 21 that is in close contact with the distillation column 2 is a ramp. When the connecting assembly 7 is installed, the bottom of the inlet and outlet pipe 3 compresses the moving rod 21. Because one end of the moving rod 21 is a ramp, the moving rod 21 is squeezed by the inlet and outlet pipe 3 and moves. The movement of the moving rod 21 drives the fixed plate 24 to compress the spring 22. When the fixed pipe 19 moves to the appropriate position, the spring 22 itself drives the moving rod 21 to be inserted into the inlet and outlet pipe 3, thereby completing the quick fixation.

[0029] A sealing gasket is provided at the end of the inlet / outlet pipe 3 that abuts against the fixed pipe 19, thereby increasing the sealing between the inlet / outlet pipe 3 and the connecting assembly 7.

[0030] In use, the esterified material to be reacted is added into the esterification vessel 1 through the esterification feed port 16. At this time, the stirring motor 13 is started to drive the stirring shaft 14 and the stirring plate 15 to stir the esterified material. When the esterification reaction is completed, the esterified reactants are transported to the distillation column 2 through the feed pump 5, the inlet and outlet pipes 3 and the first connecting pipe 6. The esterified reactants are then vaporized through the reboiler 11. The vaporized esterified reactants are cooled and condensed by the action of the second connecting pipe 8 and the first condenser 9 and flow into the phase separator 10. When the pipeline needs to be disassembled and cleaned, the two pull rods 23 are pulled to move the moving rod 21 away from the inlet and outlet pipes 3. The movement of the moving rod 21 drives the fixed plate 24 to move. At the same time, the movement of the fixed plate 24 compresses the spring 22. At this time, the fixed pipe 19 can be removed by moving it downward. When installation is required, the connecting component 7 is simply aligned with the inlet and outlet pipes 3 and moved upward. It can be quickly installed by the moving rod 21, the fixed plate 24 and the spring 22.

Claims

1. An externally connected distillation column for esterification reactors, characterized in that: The apparatus includes an esterification vessel (1) and a distillation column (2). The bottom of the esterification vessel (1) and one side of the distillation column (2) are both fixed with inlet and outlet pipes (3) that communicate with them. A feed pump (5) is provided between the esterification vessel (1) and the distillation column (2). The output end and input end of the feed pump (5) are both fixed with a first connecting pipe (6), and one end of the first connecting pipe (6) is fixed with a connecting component (7) that connects to the inlet and outlet pipes (3). The connecting assembly (7) includes a fixed tube (19), and guide tubes (20) are fixed at both ends of the fixed tube (19). A movable rod (21) is movably connected inside the guide tube (20) and inserted into the fixed tube (19) and the inlet / outlet tube (3). A fixed plate (24) located inside the guide tube (20) is fixed on the outer surface of the movable rod (21). A spring (22) located inside the guide tube (20) is fixed on the outer surface of the movable rod (21). A pull rod (23) is fixed at the end of the movable rod (21) away from the fixed tube (19).

2. The external distillation column for esterification reactor according to claim 1, characterized in that: The top center of the distillation column (2) is fixed with a second connecting pipe (8), a first condenser (9) is fixed between the second connecting pipes (8), and a phase separator (10) is fixed at the other end of the second connecting pipe (8).

3. The external distillation column for esterification reactor according to claim 1, characterized in that: One end of the distillation column (2) is fixed with a reboiler (11) connected to it, and the bottom center of the distillation column (2) is fixed with a distillation outlet (12).

4. The external distillation column for esterification reactor according to claim 1, characterized in that: A stirring motor (13) is fixed at the top center of the esterification vessel (1). The rotating end of the stirring motor (13) passes through the esterification vessel (1) and is fixed with a stirring shaft (14). Several stirring plates (15) are fixed at equal intervals on the outer surface of the stirring shaft (14).

5. The external distillation column for esterification reactor according to claim 1, characterized in that: The top left and right ends of the esterification reactor (1) are respectively fixed with esterification feed ports (16) and a second condenser (17).

6. The external distillation column for esterification reactor according to claim 1, characterized in that: The bottom of the esterification vessel (1), distillation column (2) and phase separator (10) is fixed with several support legs (18) in a circular array.

7. The external distillation column for esterification reactor according to claim 1, characterized in that: The pipes between the esterification vessel (1), the distillation column (2), and the phase separator (10) are all fixed by the connecting assembly (7).

8. The external distillation column for esterification reactor according to claim 1, characterized in that: The end of the moving rod (21) that is in close contact with the distillation column (2) is a slope.

9. The external distillation column for esterification reactor according to claim 1, characterized in that: A sealing gasket is provided at the end of the inlet / outlet pipe (3) that abuts against the fixed pipe (19).

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