Extractive distillation tower

Abstract

The utility model provides an extractive distillation tower and belongs to the technical field of extractive distillation towers. The extractive distillation tower comprises a tower body, a purification mechanism comprises a first reaction bin and a second reaction bin, the first reaction bin and the second reaction bin are arranged at the top and the bottom of the tower body respectively, a heat exchanger is arranged on one side of the first reaction bin, a reboiler is arranged on one side of the second reaction bin, and the heat exchanger is connected with the reboiler. The circulating valves, the air outlet valves, the reflux valves, the electric heating pieces, the meshes, the streaming discs and the plurality of groups of tower bodies are matched with one another, so that raw materials can be extracted and distilled for multiple times, the purity of a product is effectively increased, and the temperature in the tower bodies can be kept balanced by arranging the electric heating pieces; the device is stable at a proper temperature so as to improve the extraction and distillation efficiency, and meshes are formed in the electric heating sheet, so that the electric heating sheet has a heating constant-temperature effect and also has a filtering effect, the gas can be extracted for multiple times, and the reaction effect can be improved.

Description

Technical Field

[0001] The utility model relates to the field of extractive distillation towers, in particular to an extractive distillation tower. Background Art

[0002] An extractive distillation tower is a device used to separate components in a liquid mixture. It is usually used in chemical process in industrial production. It utilizes the difference in boiling points of different components to heat the mixture to the boiling point, and then separates the generated vapor from the liquid mixture to obtain components of different purities. The extractive distillation tower works based on the principle of distillation and utilizes the difference in boiling points of different components to separate the mixture. In the distillation tower, components with lower boiling points will more easily enter the vapor phase, while components with higher boiling points tend to remain in the liquid phase. In this way, the separation of different components is gradually achieved through the alternating action of tower plates or packing layers.

[0003] In the specific use of the extractive distillation tower, when the gas enters the tower body under the action of the reboiler to react with the liquid, the reaction time of the gas and liquid is too short, which is a single reaction, resulting in a low effect of product purification. In addition, when disassembling and assembling, it is troublesome and laborious to replace parts, which wastes a lot of time and is inconvenient for operators to use. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides an extractive distillation tower that overcomes the above technical problems or at least partially solves the above problems.

[0005] The utility model is achieved in this way:

[0006] The utility model provides an extractive distillation tower, comprising a tower body,

[0007] A purification mechanism, the purification mechanism comprising a first reaction chamber and a second reaction chamber, the first reaction chamber and the second reaction chamber are respectively arranged at the top and the bottom of the tower body, a heat exchanger is arranged on one side of the first reaction chamber, a reboiler is arranged on one side of the second reaction chamber, an electric heating plate is arranged inside the tower body, and a plurality of flow-around plates are arranged on the top of the electric heating plate;

[0008] The threaded rods, the tower bodies and the threaded rods are arranged in multiple groups, and the multiple groups of threaded rods are respectively arranged between the multiple groups of tower bodies.

[0009] In a preferred solution, an air outlet pipe is provided between one side of the first reaction chamber and the bottom of the heat exchanger, and an air outlet valve is provided on the surface of the air outlet pipe.

[0010] In a preferred solution, a circulation pipe is provided between the top of the first reaction chamber and one side of the heat exchanger, and a circulation valve is provided on the surface of the circulation pipe.

[0011] In a preferred embodiment, a reflux pipe is provided between one side of the second reaction chamber and the top of the reboiler, and a reflux valve is provided on the surface of the reflux pipe.

[0012] In a preferred embodiment, a discharge pipe is provided between the bottom of the second reaction bin and the bottom of the reboiler, and a valve is provided on the surface of the discharge pipe.

[0013] In a preferred solution, a PLC controller is disposed on the surface of the tower body, and a plurality of mesh holes are formed on the surface of the electric heating plate.

[0014] In a preferred solution, a feed hopper is disposed on one side of one group of the tower bodies, and a discharge hopper is disposed on the other side of one group of the tower bodies.

[0015] In a preferred solution, the size of the electric heater is matched with the size of the inner cavity of the tower body, and support legs are provided at the four corners of the bottom of the tower body.

[0016] The utility model provides an extractive distillation tower, and its beneficial effects include:

[0017] 1. By arranging the circulation valve, circulation valve, gas outlet valve, reflux valve, electric heating plate, mesh, flow disk and multiple groups of tower bodies to cooperate with each other, when using the extractive distillation tower, the raw materials can be extracted and distilled for multiple times, effectively increasing the purity of the product. By arranging the electric heating plate, the temperature inside the tower body can be kept balanced and stabilized at a suitable temperature, which is conducive to improving the efficiency of extraction and distillation. The electric heating plate is provided with a mesh, so that the electric heating plate has a heating and constant temperature effect, and a filtering effect, so that the gas can be extracted multiple times and the reaction effect of the gas can be improved.

[0018] 2. By setting the threaded rod, when the operator needs to disassemble and install multiple tower bodies, the operator can remove the threaded rod between the multiple tower bodies to disassemble the multiple tower bodies. When multiple tower bodies need to be installed, the threaded rod can be installed between the multiple tower bodies, so that the operator can install the multiple tower bodies and then replace the parts inside the tower body, which saves time and effort and is convenient for the operator to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1It is an overall stereogram provided by the embodiment of the utility model;

[0021] Figure 2 The utility model embodiment provides Figure 1 The enlarged view of point A in the middle;

[0022] Figure 3 The utility model embodiment provides Figure 1 The enlarged view of point B in the middle;

[0023] Figure 4 A schematic diagram of a tower cross-section structure provided for an embodiment of the utility model;

[0024] Figure 5 The utility model embodiment provides Figure 4 Enlarged view of point C in the middle;

[0025] In the figure: 1. purification mechanism; 11. tower body; 12. first reaction chamber; 13. second reaction chamber; 14. electric heating plate; 15. mesh; 16. flow plate; 17. heat exchanger; 18. reboiler; 19. PLC controller; 2. circulation pipe; 21. circulation valve; 22. outlet pipe; 23. feed hopper; 24. outlet valve; 25. reflux pipe; 26. reflux valve; 27. discharge pipe; 28. valve; 29. ​​discharge hopper; 3. threaded rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example

[0028] Reference Figure 1-Figure 5The utility model provides a technical solution: an extractive distillation tower, comprising a tower body 11, a purification mechanism 1 and a threaded rod 3, the purification mechanism 1 is a mechanism that can extract gas multiple times and can improve the reaction effect of the gas, the purification mechanism 1 comprises a first reaction chamber 12 and a second reaction chamber 13, the first reaction chamber 12 and the second reaction chamber 13 are respectively arranged at the top and the bottom of the tower body 11, the first reaction chamber 12 is arranged above the top tower body 11, the second reaction chamber 13 is arranged below the bottom tower body 11, a heat exchanger 17 is arranged on one side of the first reaction chamber 12, a reboiler 18 is arranged on one side of the second reaction chamber 13, an electric heating plate 14 is arranged inside the tower body 11, and a plurality of flow-around disks 16 are arranged on the top of the electric heating plate 14, by arranging a circulation valve 21, a circulation valve 21, an outlet valve 24, a reflux valve 26, the electric heating plate 14, a mesh 15, a flow-around disk 16, a circulation valve 21, a circulation valve 21, a gas outlet valve 24, a reflux valve 26, the electric heating plate 14, a mesh 15, a flow-around disk 16 ... The flow disk 16 and the multiple groups of tower bodies 11 cooperate with each other, so that when the operator uses the extractive distillation tower, the raw materials can be extracted and distilled multiple times, which effectively increases the purity of the product. By setting the electric heating plate 14, the temperature inside the tower body 11 can be kept balanced and stabilized at a suitable temperature, which is beneficial to improving the efficiency of the extraction and distillation. The mesh 15 provided on the electric heating plate 14 not only has the heating and constant temperature effect, but also has a filtering effect, and can reduce the flow rate of the reaction gas, so that the gas passes through the mesh 15 more slowly and the reaction is more complete. Through the flow disk 16, the flow of the liquid can be smoother and more stable, the flow distance is longer, and the residence time in the tower body 11 is longer, which is beneficial to the extraction and distillation of the raw materials. The flow disk 16 with a certain height can increase the liquid surface thickness of the gas-liquid contact, so that the gas can be extracted multiple times and the reaction effect of the gas can be improved.

[0029] Reference Figure 1-Figure 5In a preferred embodiment, the tower body 11 and the threaded rods 3 are both arranged in multiple groups, and the multiple groups of threaded rods 3 are respectively arranged between the multiple groups of tower bodies 11. An outlet pipe 22 is arranged between one side of the first reaction chamber 12 and the bottom of the heat exchanger 17, and an outlet valve 24 is arranged on the surface of the outlet pipe 22. By setting the outlet valve 24, the outlet pipe 22 can be controlled. A circulation pipe 2 is arranged between the top of the first reaction chamber 12 and one side of the heat exchanger 17, and a circulation valve 21 is arranged on the surface of the circulation pipe 2. By setting the circulation valve 21, the circulation pipe 2 can be controlled. A reflux pipe 25 is arranged between one side of the second reaction chamber 13 and the top of the reboiler 18, and a reflux valve 26 is arranged on the surface of the reflux pipe 25. By setting the reflux valve 26, The reflux pipe 25 is controlled, and a discharge pipe 27 is arranged between the bottom of the second reaction chamber 13 and the bottom of the reboiler 18. A valve 28 is arranged on the surface of the discharge pipe 27. By setting the valve 28, the discharge pipe 27 can be controlled. By setting the threaded rod 3, when the operator needs to disassemble and install multiple groups of tower bodies 11, the operator can remove the threaded rod 3 between the multiple groups of tower bodies 11, thereby performing the disassembly operation on the multiple groups of tower bodies 11. When the operator needs to install multiple groups of tower bodies 11, the operator can install the threaded rod 3 between the multiple groups of tower bodies 11, so as to facilitate the operator to install the multiple groups of tower bodies 11, and then facilitate the replacement of parts inside the tower body 11, which saves time and effort and is convenient for the operator to use.

[0030] Reference Figure 1-Figure 5 In a preferred embodiment, a PLC controller 19 is provided on the surface of one of the tower bodies 11. By providing the PLC controller 19, the electric heater 14, the heat exchanger 17 and the reboiler 18 can be controlled. A plurality of mesh holes 15 are provided on the surface of the electric heater 14. A feed hopper 23 is provided on one side of the top tower body 11, and a discharge hopper 29 is provided on the other side of the bottom tower body 11. The size of the electric heater 14 is adapted to the size of the inner cavity of the tower body 11. By adapting the size of the electric heater 14 to the size of the inner cavity of the tower body 11, it is convenient for the operator to install the electric heater 14 inside the tower body 11. Support legs are provided at the four corners of the bottom of the tower body 11. By providing the support legs, the stability of the tower body 11 can be ensured.

[0031] Specifically, the working process or working principle of the extractive distillation tower is as follows: in the specific use of the extractive distillation tower, when the gas enters the tower body 11 under the action of the reboiler 18 to react with the liquid, the reaction time of the gas and the liquid is too short, which is a single reaction, resulting in a low effect of product purification, and when disassembling and assembling, it is troublesome and laborious to replace parts, which wastes a lot of time and is inconvenient for the operator to use. Therefore, the technical solution can solve the above problems. When the operator uses the extractive distillation tower, by setting the circulation valve 21, the circulation valve 21, the outlet valve 24, the reflux valve 26 and the mutual cooperation of multiple groups of tower bodies 11, the raw materials can be extracted and distilled for multiple times, effectively increasing the purity of the product. By setting the electric heating plate 14, the internal temperature of the tower body 11 can be kept balanced and stabilized at an appropriate temperature, which is beneficial to improving the efficiency of the extractive distillation. The mesh 15 is provided on the electric heating plate 14, so that the electric heating plate 14 has a heating constant temperature effect while also having a process The filtration effect can be achieved and the flow rate of the reaction gas can be reduced, so that the gas passes through the mesh 15 more slowly and the reaction is more complete. Through the flow disk 16, the flow of the liquid can be smoother and more stable, the flow distance can be longer, and the residence time in the tower body 11 can be longer, which is beneficial to the extraction and distillation of the raw materials. The flow disk 16 with a certain height can increase the liquid surface thickness of the gas-liquid contact, so that the gas can be extracted multiple times and the reaction effect of the gas can be improved. When the operator needs to disassemble and install multiple groups of tower bodies 11, the operator can remove the threaded rod 3 between the multiple groups of tower bodies 11, so that the multiple groups of tower bodies 11 can be disassembled. When the operator needs to install multiple groups of tower bodies 11, the operator can install the threaded rod 3 between the multiple groups of tower bodies 11, so that the operator can install the multiple groups of tower bodies 11 conveniently, and then it can be convenient to replace the parts inside the tower body 11, saving time and labor, and convenient for the operator to use. At this point, all processes are completed.

[0032] It should be noted that the electric heating plate 14, the heat exchanger 17, the reboiler 18 and the PLC controller 19 are all electrically connected to an external power supply and are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they will not be described in detail.

Claims

1. An extractive distillation tower, comprising a tower body (11), characterized in that: A purification mechanism (1), the purification mechanism (1) comprising a first reaction chamber (12) and a second reaction chamber (13), the first reaction chamber (12) and the second reaction chamber (13) being arranged at the top and the bottom of a tower body (11) respectively, a heat exchanger (17) being arranged on one side of the first reaction chamber (12), a reboiler (18) being arranged on one side of the second reaction chamber (13), an electric heating plate (14) being arranged inside the tower body (11), and a plurality of flow-around plates (16) being arranged on the top of the electric heating plate (14); The threaded rod (3), the tower body (11) and the threaded rod (3) are arranged in multiple groups, and the multiple groups of threaded rods (3) are respectively arranged between the multiple groups of tower bodies (11).

2. An extractive distillation tower according to claim 1, characterized in that: An air outlet pipe (22) is provided between one side of the first reaction chamber (12) and the bottom of the heat exchanger (17), and an air outlet valve (24) is provided on the surface of the air outlet pipe (22).

3. An extractive distillation tower according to claim 2, characterized in that: A circulation pipe (2) is provided between the top of the first reaction chamber (12) and one side of the heat exchanger (17), and a circulation valve (21) is provided on the surface of the circulation pipe (2).

4. An extractive distillation tower according to claim 3, characterized in that: A reflux pipe (25) is provided between one side of the second reaction chamber (13) and the top of the reboiler (18), and a reflux valve (26) is provided on the surface of the reflux pipe (25).

5. An extractive distillation tower according to claim 4, characterized in that: A discharge pipe (27) is provided between the bottom of the second reaction chamber (13) and the bottom of the reboiler (18), and a valve (28) is provided on the surface of the discharge pipe (27).

6. An extractive distillation tower according to claim 5, characterized in that: In one embodiment, a PLC controller (19) is arranged on the surface of the tower body (11), and a plurality of mesh holes (15) are opened on the surface of the electric heating plate (14).

7. An extractive distillation tower according to claim 6, characterized in that: A feed hopper (23) is provided on one side of one group of the tower bodies (11), and a discharge hopper (29) is provided on the other side of one group of the tower bodies (11).

8. An extractive distillation tower according to claim 7, characterized in that: The size of the electric heating plate (14) is adapted to the size of the inner cavity of the tower body (11), and support legs are provided at the four corners of the bottom of the tower body (11).

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