Two-stage rectifying tower for bromine extraction

Abstract

The utility model discloses a two-stage rectifying tower for bromine extraction, which comprises a base, two groups of fixing frames arranged on the upper end face of the base, a rectifying tower body arranged inside the top ends of the fixing frames, a reflux inlet arranged at the bottom end of the rectifying tower body, a reflux pipe arranged at the bottom end of the reflux inlet, and a delivery pump arranged at one end of the reflux pipe. And a first flow guide pipe is arranged at the output end of the conveying pump. The finished product discharge pipe is arranged at the bottom end of the rectifying tower body, the reflux inlet is formed in the bottom end of the finished product discharge pipe, and the reflux pipe is arranged at the output end of the reflux inlet, so that liquid at the bottom end of the rectifying tower body flows back into the reboiler by the reflux pipe through the first flow guide pipe, and the phenomenon that the liquid flows back into the reboiler during distillation is avoided; and the residual bromine in the cooled liquid is discharged and discarded as a prepared liquid, so that the resource waste is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation towers, in particular to a two-stage distillation tower for bromine extraction. Background Art

[0002] Bromine is a chemical element with the symbol Br and the atomic number 35. It is located in the 4th period and the VIIA group in the periodic table of chemical elements. It is one of the halogen elements. Bromine molecules are volatile red-black liquids at standard temperature and pressure, and their activity is between that of chlorine and iodine. Pure bromine is also called bromine. Bromine and its compounds can be used as flame retardants, water purifiers, pesticides, dyes, etc. Mercurochrome, which was once a commonly used disinfectant, contains bromine and mercury.

[0003] At present, the purification of bromine generally needs to be completed through distillation, so a distillation tower is needed. The distillation tower currently used is usually composed of a tower body, a conveying pipe, an exchanger, a finished product outlet and a waste liquid outlet. However, the existing distillation tower will produce waste liquid during heat exchange, and then the waste liquid will be discharged through the waste liquid discharge pipe. The discharged waste liquid is usually directly scrapped, but in fact a small amount of bromine will still remain in the waste liquid, resulting in a waste of bromine resources. Therefore, the inventor proposes a two-stage distillation tower for bromine extraction to solve the problem. Utility Model Content

[0004] The utility model aims to provide a two-stage distillation tower for bromine extraction, so as to solve the problem that the existing distillation tower generates waste liquid during heat exchange, and then the waste liquid is discharged through a waste liquid discharge pipe, and the discharged waste liquid is usually directly scrapped, but in fact a small amount of bromine still remains in the waste liquid, thereby causing a waste of bromine resources.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a two-stage distillation tower for bromine extraction, comprising a base, wherein the upper end surface of the base is provided with two sets of fixing frames, a distillation tower body is provided inside the top of the fixing frame, a reflux port is provided at the bottom end of the distillation tower body, a reflux pipe is provided at the bottom end of the reflux port, a delivery pump is provided at one end of the reflux pipe, and a first guide pipe is provided at the output end of the delivery pump, so that the reflux pipe refluxes the liquid at the bottom end of the distillation tower body to the inside of the reboiler through the first guide pipe.

[0006] As a technical solution of the utility model, a reboiler is arranged at one end of the upper end surface of the base, a control assembly is arranged at the front of the reboiler, and a first conveying pipe is arranged at the top of the reboiler, so that the reboiler heats the raw material.

[0007] As a technical solution of the utility model, a tower plate is arranged inside the distillation tower body, and the tower plate adopts a trumpet-shaped structure so that the tower plate can process the raw material steam.

[0008] As a technical solution of the utility model, a plurality of through holes are arranged inside the tower plate, and a plurality of first fixing members are longitudinally arranged at the top edge of the tower plate, so that the tower plate is fixed inside the distillation tower body through the first fixing members.

[0009] As a technical solution of the utility model, the tops of the two groups of distillation tower bodies are respectively provided with a fairing A and a fairing B, the output end of the fairing A is provided with a second delivery pipe, and the output end of the second delivery pipe is fixedly connected to the output end of the distillation tower body, so that the steam is transported to the inside of the second group of distillation tower bodies for further distillation treatment.

[0010] As a technical solution of the utility model, a third delivery pipe is provided at the output end of the fairing B, and a heat exchanger is provided at one end of the third delivery pipe, so that the third delivery pipe delivers the steam after re-distillation to the inside of the heat exchanger.

[0011] As a technical solution of the utility model, a controller is provided at one end of the top of the heat exchanger, a heat exchange tube is provided at the output end of the controller, and a second fixing member is provided at one end of the heat exchange tube, so that the controller controls the heat exchange tube to perform heat exchange processing on the steam inside the heat exchanger.

[0012] As a technical solution of the utility model, a finished product discharge pipe is provided at the output end of the heat exchanger, and a guide port is provided at the center of the bottom of the heat exchanger, a second guide pipe is provided at the bottom end of the guide port, and the second guide pipe is connected to the bottom end of the distillation tower body, so that the liquid generated after the heat exchange is introduced into the second guide pipe through the guide port.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the two-stage distillation tower for bromine extraction is not only reasonable in structure, convenient in use and simple in later maintenance, but also has the following advantages:

[0014] (1) The utility model provides a finished product discharge pipe at the bottom end of the distillation tower body, a reflux port at the bottom end of the finished product discharge pipe, and a reflux pipe at the output end of the reflux port, so that the reflux pipe refluxes the liquid at the bottom end of the distillation tower body to the inside of the reboiler through the first guide pipe, thereby avoiding the residual bromine in the cooled liquid from being discharged and discarded as a preparation liquid during the distillation process, resulting in a waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3It is a cross-sectional enlarged structural schematic diagram of the tower plate of the utility model;

[0018] Figure 4 It is a schematic diagram of the enlarged structure of the tower plate of the utility model from top view;

[0019] Figure 5 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. base; 2. reboiler; 3. control assembly; 4. first delivery pipe; 5. fixing frame; 6. distillation tower body; 7. tower plate; 8. through hole; 9. first fixing piece; 10. fairing A; 1001. fairing B; 11. second delivery pipe; 12. first guide pipe; 13. third delivery pipe; 14. heat exchanger; 15. controller; 16. heat exchange pipe; 17. second fixing piece; 18. guide port; 19. second guide pipe; 20. finished product discharge pipe; 21. reflux port; 22. reflux pipe; 23. delivery pump. 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. 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.

[0022] See also Figure 1-5 The utility model provides an embodiment: a two-stage distillation tower for bromine extraction, comprising a base 1, two sets of fixing frames 5 are arranged on the upper end surface of the base 1, a distillation tower body 6 is arranged inside the top of the fixing frame 5, a reflux port 21 is arranged at the bottom end of the distillation tower body 6, a reflux port 21 is arranged at the bottom end of the reflux port 21, a reflux pipe 22 is arranged at one end of the reflux pipe 22, and a first flow guide pipe 12 is arranged at the output end of the delivery pump 23;

[0023] When in use, a finished product discharge pipe 20 is provided at the bottom end of the distillation tower body 6, a reflux port 21 is provided at the bottom end of the finished product discharge pipe 20, and a reflux pipe 22 is provided at the output end of the reflux port 21, so that the reflux pipe 22 refluxes the liquid at the bottom end of the distillation tower body 6 to the inside of the reboiler 2 through the first guide pipe 12;

[0024] A reboiler 2 is disposed at one end of the upper end surface of the base 1, a control assembly 3 is disposed at the front of the reboiler 2, and a first delivery pipe 4 is disposed at the top of the reboiler 2;

[0025] When in use, a first delivery pipe 4 is arranged at the top of the reboiler 2, and one end of the first delivery pipe 4 is fixedly connected to the bottom of the first group of distillation tower bodies 6, so that the reboiler 2 heats the raw materials, so that the added raw materials are transported to the inside of the distillation tower body 6 through the first delivery pipe 4;

[0026] The distillation tower body 6 is provided with a tray 7, and the tray 7 adopts a trumpet-shaped structure;

[0027] When in use, multiple groups of trays 7 are arranged inside the distillation tower body 6 so that the trays 7 process the raw material vapor;

[0028] A plurality of through holes 8 are arranged inside the tower plate 7, and a plurality of first fixing members 9 are longitudinally arranged at the top edge of the tower plate 7;

[0029] When in use, multiple groups of first fixing members 9 are arranged at the edge of the top of the tower plate 7, so that the tower plate 7 is fixed inside the distillation tower body 6 through the first fixing members 9;

[0030] The tops of the two groups of distillation tower bodies 6 are respectively provided with fairings A10 and fairings B1001, and the output end of the fairing 10A is provided with a second delivery pipe 11, and the output end of the second delivery pipe 11 is fixedly connected to the output end of the distillation tower body 6;

[0031] When in use, a second delivery pipe 11 is arranged on one side of the fairing A10, and the output of the second delivery pipe 11 is fixedly connected to the bottom of the second group of distillation tower bodies 6, so that the steam is transported to the inside of the second group of distillation tower bodies 6 for further distillation treatment;

[0032] A third delivery pipe 13 is provided at the output end of the fairing B1001, and a heat exchanger 14 is provided at one end of the third delivery pipe 13;

[0033] When in use, a third delivery pipe 13 is arranged on one side of the fairing B1001, and a heat exchanger 14 is arranged at one end of the third delivery pipe 13, so that the third delivery pipe 13 transfers the steam after distillation to the inside of the heat exchanger 14;

[0034] A controller 15 is disposed at one end of the top of the heat exchanger 14, a heat exchange tube 16 is disposed at the output end of the controller 15, and a second fixing member 17 is disposed at one end of the heat exchange tube 16;

[0035] When in use, by arranging a heat exchange tube 16 at the output end of the controller 15, the controller 15 controls the heat exchange tube 16 to perform heat exchange processing on the steam inside the heat exchanger 14;

[0036] The output end of the heat exchanger 14 is provided with a finished product discharge pipe 20, and a guide port 18 is provided at the center of the bottom of the heat exchanger 14, and a second guide pipe 19 is provided at the bottom end of the guide port 18, and the second guide pipe 19 is connected to the bottom end of the distillation tower body 6;

[0037] When in use, a guide port 18 is provided at the bottom end of the heat exchanger 14 so that the liquid generated after heat exchange passes through the guide port 18 to the second guide pipe 19 and then is transported to the bottom of the second group of distillation tower bodies 6 by the second guide pipe 19 .

[0038] When the embodiment of the present application is in use: first, the raw material is heated by the reboiler 2, so that the generated steam is transported to the first group of distillation tower bodies 6 through the first delivery pipe 4, so that the tower plate 7 inside the distillation tower body 6 processes the steam, and then the steam after the first distillation treatment is transported to the second delivery pipe 11 through the fairing A10, so that the second delivery pipe 11 transports the steam to the second group of distillation tower bodies 6 for secondary distillation treatment, and then the fairing B1001 transports the steam to the heat exchanger 14 through the third delivery pipe 13, so that the controller 15 performs heat exchange treatment on the steam through the heat exchange pipe 16, and then the finished product is output through the finished product discharge pipe 20. At the same time, the liquid generated by the heat exchange is transported to the inside of the distillation tower body 6 through the guide port 18, and is transported to the reflux pipe 22 through the reflux port 21, so that the delivery pump 23 transports the liquid inside the reflux pipe 22 to the inside of the reboiler 2 through the first guide pipe 12, thereby completing the use of a two-stage distillation tower for bromine extraction.

[0039] The implementation modes of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A two-stage distillation tower for bromine extraction, comprising a base (1), characterized in that: Two sets of fixing frames (5) are arranged on the upper end surface of the base (1); a distillation tower body (6) is arranged inside the top end of the fixing frame (5); a reflux port (21) is arranged at the bottom end of the distillation tower body (6); a reflux pipe (22) is arranged at the bottom end of the reflux port (21); a delivery pump (23) is arranged at one end of the reflux pipe (22); and a first flow guide pipe (12) is arranged at the output end of the delivery pump (23).

2. The two-stage distillation tower for bromine extraction according to claim 1, characterized in that: A reboiler (2) is provided at one end of the upper end surface of the base (1), a control assembly (3) is provided at the front of the reboiler (2), and a first delivery pipe (4) is provided at the top of the reboiler (2).

3. The two-stage distillation tower for bromine extraction according to claim 1, characterized in that: The distillation tower body (6) is provided with a tower plate (7) inside, and the tower plate (7) adopts a trumpet-shaped structure.

4. The two-stage distillation tower for bromine extraction according to claim 3, characterized in that: A plurality of groups of through holes (8) are arranged inside the tower plate (7), and a plurality of groups of first fixing members (9) are longitudinally arranged at the top edge of the tower plate (7).

5. The two-stage distillation tower for bromine extraction according to claim 1, characterized in that: The top ends of the two groups of distillation tower bodies (6) are respectively provided with a fairing A (10) and a fairing B (1001); the output end of the fairing A (10) is provided with a second delivery pipe (11); the output end of the second delivery pipe (11) is fixedly connected to the output end of the distillation tower body (6).

6. The two-stage distillation tower for bromine extraction according to claim 5, characterized in that: The output end of the fairing B (1001) is provided with a third delivery pipe (13), and one end of the third delivery pipe (13) is provided with a heat exchanger (14).

7. The two-stage distillation tower for bromine extraction according to claim 6, characterized in that: A controller (15) is provided at one end of the top of the heat exchanger (14), a heat exchange tube (16) is provided at the output end of the controller (15), and a second fixing member (17) is provided at one end of the heat exchange tube (16).

8. The two-stage distillation tower for bromine extraction according to claim 6, characterized in that: The output end of the heat exchanger (14) is provided with a finished product discharge pipe (20), and a flow guide port (18) is provided at the center of the bottom of the heat exchanger (14), and a second flow guide pipe (19) is provided at the bottom end of the flow guide port (18), and the second flow guide pipe (19) is connected to the bottom end of the distillation tower body (6).

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