Rectifying tower for producing vinylene carbonate

Abstract

The utility model discloses a rectifying tower for vinylene carbonate production, which comprises a rectifying tower main body, a reboiler component and a filter component, the left side wall of the rectifying tower main body is communicated with a feed port, the upper section of the right side wall of the rectifying tower main body is communicated with a reflux pipeline, the middle part of the bottom end of the rectifying tower main body is communicated with a discharge pipeline, and the discharge pipeline is communicated with a discharge port. The other end of the discharging pipeline is communicated with a reboiler assembly, the top end of the rectifying tower main body is communicated with a waste gas outlet, the other end of the waste gas outlet is provided with a filtering assembly, and the other end of the filtering assembly is communicated with a waste gas pipeline; the problems that when a device in the prior art is used for production, a large amount of waste gas can be generated in a rectifying tower, the waste gas is filtered and discharged through filtering equipment, but the filtering equipment is used for a long time, so that a large amount of impurities are accumulated in the filtering equipment, the filtering equipment is prone to being blocked, and maintenance and cleaning are difficult are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation columns, and specifically, to a distillation column for the production of vinylene carbonate. Background Art

[0002] Vinylene carbonate is a new type of organic film-forming additive and overcharge protection additive for lithium-ion batteries, which has good high and low temperature performance and anti-gas expansion function, and can improve the capacity and cycle life of the battery. When preparing vinylene carbonate, a distillation column is usually required for production.

[0003] It is found that in a production device for vinylene carbonate disclosed in the publication number: CN214320164U, this technology discloses that "including a production box, a heating chamber is opened at the bottom end on one side inside the production box, a steam water tank is arranged above the heating chamber, a reaction chamber is arranged on one side directly above the steam water tank, the reaction chamber is communicated with the steam water tank, a conveying pipe is arranged on the outer wall at the upper end of one side of the reaction chamber, a distillation column is arranged on the side inside the production box away from the heating chamber, the side of the top of the distillation column close to the reaction chamber is communicated with the conveying pipe, a filtering structure is arranged on the lower side of the side of the distillation column away from the conveying pipe, an infusion pipe is arranged at the top of the filtering structure and communicated with the outer wall on the upper side of the distillation column, a collecting pipe is arranged at the bottom end on the side of the filtering structure away from the distillation column, the heating chamber arranged at the bottom end on one side inside the production box and the steam water tank above can convey the internal steam to the inside of the reaction chamber at the top, so that the chemical substances at the top of the heat-reaction layer inside the reaction chamber are reacted by the steam, the reacted gas or water vapor is conveyed into the distillation column through the conveying pipe, distilled by the distillation column and conveyed into the filtering structure through the infusion pipe, and finally conveyed into the collector through the filtering through the collecting pipe to complete the production, enabling the device to directly complete the production through the device, improving the production efficiency and use convenience of the device".

[0004] However, the above production device for vinylene carbonate has the following disadvantages:

[0005] 1. When the device in this patent is in production, a large amount of waste gas will be generated in the distillation column. The waste gas is filtered and discharged through the filtering equipment. However, due to the long-term use of the filtering equipment, a large amount of impurities accumulate in the filtering equipment, which is easy to block it, and it is more difficult to maintain and clean.

[0006] To solve the above problems, a distillation column for the production of vinylene carbonate is proposed in this application. Utility Model Content

[0007] In view of the problems in the related technology, the utility model provides a distillation column for the production of vinylene carbonate, which can facilitate the maintenance and cleaning of the waste gas filtering device of the distillation column.

[0008] For this reason, the specific technical solution adopted by the utility model is as follows:

[0009] A rectification column for the production of vinylene carbonate, comprising a rectification column main body, a reboiler assembly and a filtering assembly. A feed inlet is communicated with the left side wall of the rectification column main body. The middle part of the bottom end of the rectification column main body is communicated with a discharge pipeline. The other end of the discharge pipeline is communicated with the reboiler assembly. The top end of the rectification column main body is communicated with an exhaust gas outlet. The other end of the exhaust gas outlet is provided with a filtering assembly, and the other end of the filtering assembly is communicated with an exhaust gas pipeline;

[0010] The filtering assembly includes an installation shell. Installation plates are fixedly installed at both the upper and lower ends of the installation shell. The bottom end of the installation shell is installed at the top end of the exhaust gas outlet through the installation plate at the lower end. The top end of the installation shell is installed at the bottom end of the exhaust gas pipeline through the installation plate at the upper end. A filtering main body is slidably connected in the inner cavity of the installation shell, and a cover is installed on the front side wall of the installation shell.

[0011] As a further scheme of the utility model, a sealing groove is formed on the front side wall of the installation shell, and the sealing groove is used in cooperation with a sealing strip on the cover wall.

[0012] As a further scheme of the utility model, fixing holes are formed at the four corners of the front side wall of the installation shell, and fixing bolts on the front side wall of the installation shell pass through the installation holes at the four corners of the cover and extend into the fixing holes.

[0013] As a further scheme of the utility model, a reflux pipeline is communicated with the upper section of the right side wall of the rectification column main body.

[0014] As a further scheme of the utility model, the reboiler assembly includes an installation seat. A reboiler main body is installed on the installation seat. The top end of the reboiler main body is communicated with a connecting pipeline, and the other end of the connecting pipeline is communicated with the right side wall of the rectification column main body. One end of the discharge pipeline is communicated with the left side wall of the reboiler main body.

[0015] As a further scheme of the utility model, a discharge pipe is communicated with the bottom end of the reboiler main body, and the discharge pipe passes through the installation seat and extends outwards.

[0016] As a further scheme of the utility model, a manhole is further installed on the left side wall of the rectification column main body, and a maintenance ladder is installed on the outer wall of the rectification column main body.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model works in cooperation with the main rectification tower body, the filtering component and the maintenance ladder. When it is necessary to maintain and clean the filtering component, the maintenance personnel climb to the top of the main rectification tower body through the maintenance ladder, then remove the cover by unscrewing the fixing bolts, and then take out the filtering main body in the inner cavity of the installation shell, so that the filtering main body can be cleaned or replaced, thereby enabling the rectification tower to conveniently maintain and clean the waste gas filtering component during use and avoiding the blockage of the filtering component. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 FIG. 1 is an overall structural schematic diagram of a rectification tower for producing vinylene carbonate according to an embodiment of the present utility model;

[0021] Figure 2 FIG. 2 is a schematic diagram of the cooperation of the waste gas outlet, the filtering component and the waste gas pipeline of a rectification tower for producing vinylene carbonate according to an embodiment of the present utility model;

[0022] Figure 3 FIG. 3 is a schematic diagram of the cooperation of the cover and the installation shell of a rectification tower for producing vinylene carbonate according to an embodiment of the present utility model;

[0023] Figure 4 FIG. 4 is a schematic diagram of the filtering main body and the installation shell of a rectification tower for producing vinylene carbonate according to an embodiment of the present utility model;

[0024] Figure 5 FIG. 5 is a schematic diagram of the manhole position of a rectification tower for producing vinylene carbonate according to an embodiment of the present utility model.

[0025] In the figure:

[0026] 1, main rectification tower body; 2, reboiler assembly; 21, mounting seat; 22, reboiler main body; 23, connecting pipe; 24, discharge pipe; 3, filtering component; 4, feed inlet; 5, discharge pipeline; 6, waste gas outlet; 7, waste gas pipeline; 8, installation shell; 9, mounting plate; 10, filtering main body; 11, cover; 12, sealing groove; 13, fixing hole; 14, fixing bolt; 15, mounting hole; 16, reflux pipeline; 17, manhole; 18, maintenance ladder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To further illustrate each embodiment, the present utility model provides attached drawings, which are part of the disclosure of the present utility model. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0028] According to an embodiment of the present utility model, a rectifying column for the production of vinylene carbonate is provided.

[0029] Please refer to the attached specification Figures 1-5 , a rectifying column for the production of vinylene carbonate according to an embodiment of the present utility model, includes a rectifying column main body 1, a reboiler assembly 2 and a filtering assembly 3. A feed inlet 4 is communicated with the left side wall of the rectifying column main body 1. The upper section of the right side wall of the rectifying column main body 1 is communicated with a reflux pipeline 16. The middle part of the bottom end of the rectifying column main body 1 is communicated with a discharge pipeline 5. The other end of the discharge pipeline 5 is communicated with the reboiler assembly 2. The top end of the rectifying column main body 1 is communicated with an exhaust gas outlet 6. The other end of the exhaust gas outlet 6 is provided with a filtering assembly 3, and the other end of the filtering assembly 3 is communicated with an exhaust gas pipeline 7; the filtering assembly 3 includes an installation housing 8. Installation plates 9 are fixedly installed at both the upper and lower ends of the installation housing 8. The bottom end of the installation housing 8 is installed at the top end of the exhaust gas outlet 6 through the installation plate 9 at the lower end. The top end of the installation housing 8 is installed at the bottom end of the exhaust gas pipeline 7 through the installation plate 9 at the upper end. A filtering main body 10 is slidably connected in the inner cavity of the installation housing 8. A cover 11 is installed on the front side wall of the installation housing 8. A sealing groove 12 is formed on the front side wall of the installation housing 8, and the sealing groove 12 is used in cooperation with the sealing strip on the wall of the cover 11. Fixing holes 13 are formed at the four corners of the front side wall of the installation housing 8, and the front side wall of the installation housing 8 passes through the installation holes 15 at the four corners of the cover 11 through fixing bolts 14 until they extend into the fixing holes 13. By setting the rectifying column main body 1, the filtering assembly 3 and the maintenance ladder 18 to work in cooperation, when it is necessary to maintain and clean the filtering assembly 3, the maintenance personnel climb to the top end of the rectifying column main body 1 through the maintenance ladder 18. Then, the cover 11 is removed by unscrewing the fixing bolts 14. Then, the filtering main body 10 in the inner cavity of the installation housing 8 is taken out, and the filtering main body 10 can be cleaned or replaced, so that the exhaust gas filtering assembly 3 of the present rectifying column can be conveniently maintained and cleaned during use, and the filtering assembly 3 is prevented from being blocked.

[0030] In one embodiment, please refer to the attached specification Figure 1 and Figure 5, as a further solution of the present utility model, the reboiler assembly 2 includes a mounting base 21, a reboiler main body 22 is mounted on the mounting base 21, the top end of the reboiler main body 22 is communicated with a connecting pipe 23, and the other end of the connecting pipe 23 is communicated with the right side wall of the rectification tower main body 1. One end of a discharge pipe 5 is communicated with the left side wall of the reboiler main body 22, and a discharge pipe 24 is communicated with the bottom end of the reboiler main body 22. The discharge pipe 24 passes through the mounting base 21 and extends outwards. During use, the material in the inner cavity of the rectification tower main body 1 enters the reboiler main body 22 through the discharge pipe 5 at the bottom end. After being heated, a part of it enters the rectification tower main body 1 again through the connecting pipe 23, and the other part of the finished product is discharged and collected through the discharge pipe 24 at the bottom end of the reboiler main body 22.

[0031] In one embodiment, please refer to the attached drawings of the specification Figure 1 and Figure 5 , as a further solution of the present utility model, a manhole 17 is further installed on the left side wall of the rectification tower main body 1, and a maintenance ladder 18 is installed on the outer wall of the rectification tower main body 1. The provided maintenance ladder 18 can facilitate the maintenance of the filtering assembly 3 at the top end of the rectification tower main body 1.

[0032] Working process: During use, the material enters the inner cavity of the rectification tower main body 1 through the feed inlet 4 and is rectified in the inner cavity of the rectification tower main body 1. The waste gas generated during this process enters the filtering assembly 3 through the waste gas outlet 6 at the top end of the rectification tower main body 1 to complete the filtering operation. Subsequently, the filtered waste gas enters the waste gas pipe 7 and is discharged. When it is necessary to maintain and clean the filtering assembly 3, the maintenance personnel climb to the top end of the rectification tower main body 1 through the maintenance ladder 18. Then, the cover 11 is removed by unscrewing the fixing bolts 14. Then, the filtering main body 10 in the inner cavity of the installation housing 8 is taken out, and the filtering main body 10 can be cleaned or replaced. Subsequently, the maintained filtering main body 10 is pushed into the inner cavity of the installation housing 8. Then, the mounting holes 15 on the cover 11 are aligned with the fixing holes 13 on the installation housing 8. Subsequently, the fixing bolts 14 are sequentially inserted into the mounting holes 15 and the fixing holes 13 and tightened, and the cover 11 can be installed in place to complete the maintenance operation of the entire filtering assembly 3.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A distillation tower for producing vinylene carbonate, comprising a distillation tower body (1), a reboiler assembly (2) and a filter assembly (3), characterized in that: The left side wall of the distillation tower body (1) is connected to a feed port (4); the middle of the bottom end of the distillation tower body (1) is connected to a discharge pipe (5); the other end of the discharge pipe (5) is connected to a reboiler assembly (2); the top of the distillation tower body (1) is connected to an exhaust gas outlet (6); the other end of the exhaust gas outlet (6) is installed with a filter assembly (3), and the other end of the filter assembly (3) is connected to an exhaust gas pipe (7); The filter assembly (3) comprises a mounting shell (8), the upper and lower ends of which are fixedly mounted with mounting plates (9), the bottom end of the mounting shell (8) is mounted on the top end of the exhaust gas outlet (6) via the mounting plate (9) at the bottom end, the top end of the mounting shell (8) is mounted on the bottom end of the exhaust gas pipe (7) via the mounting plate (9) at the top end, a filter body (10) is slidably connected in the inner cavity of the mounting shell (8), and a sealing cover (11) is mounted on the front side wall of the mounting shell (8).

2. A distillation tower for vinylene carbonate production according to claim 1, characterized in that: A sealing groove (12) is provided on the front side wall of the installation shell (8), and the sealing groove (12) is used in conjunction with a sealing strip on the wall of the sealing cover (11).

3. A distillation tower for vinylene carbonate production according to claim 2, characterized in that: The four corners of the front side wall of the installation shell (8) are provided with fixing holes (13), and the fixing bolts (14) on the front side wall of the installation shell (8) pass through the mounting holes (15) on the four corners of the cover (11) until they extend into the fixing holes (13).

4. A distillation tower for vinylene carbonate production according to claim 1, characterized in that: The upper section of the right side wall of the distillation tower body (1) is connected to a reflux pipe (16).

5. A distillation tower for vinylene carbonate production according to claim 1, characterized in that: The reboiler assembly (2) comprises a mounting seat (21), a reboiler body (22) is mounted on the mounting seat (21), a top end of the reboiler body (22) is connected to a connecting pipe (23), and the other end of the connecting pipe (23) is connected to the right side wall of the distillation tower body (1), and one end of the discharge pipe (5) is connected to the left side wall of the reboiler body (22).

6. A distillation tower for vinylene carbonate production according to claim 5, characterized in that: The bottom end of the reboiler body (22) is connected to a discharge pipe (24), and the discharge pipe (24) passes through the mounting seat (21) and then extends outward.

7. A distillation tower for vinylene carbonate production according to claim 1, characterized in that: A manhole (17) is also installed on the left side wall of the distillation tower body (1), and an inspection ladder (18) is installed on the outer wall of the distillation tower body (1).

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