A rectification device for high-purity dicyclopentadiene preparation

Abstract

The utility model provides a kind of rectifying column device for high-purity dicyclopentadiene preparation, it is related to chemical equipment field, including rectifying column body, the preheating assembly is fixedly arranged in the side of rectifying column body, the reboiling assembly is arranged in the bottom side of rectifying column body, the condensing assembly is arranged in the top of rectifying column body, the reflux assembly is arranged in the bottom side of rectifying column body, the utility model can be preheated to approach boiling temperature to the material of entering rectifying column body, material can evaporate faster after entering rectifying column body, to improve rectification efficiency, can reduce the heating amount required by rectifying column body, to reduce energy consumption, ensure that material has stable temperature and composition when entering rectifying column body, it is favorable to the stable operation of rectification process, provide heat for rectification process, make the liquid phase part of tower bottom gasification, form ascending steam, heat the liquid of tower bottom.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment, and more specifically, to a distillation apparatus for the preparation of high-purity dicyclopentadiene. Background Technology

[0002] Dicyclopentadiene often coexists with other substances in industrial production, such as isoprene and other copolymers with similar boiling points. By using distillation to take advantage of the differences in boiling points between different substances, these impurities can be effectively separated, thereby obtaining high-purity dicyclopentadiene. High-purity dicyclopentadiene can ensure the quality and performance of products in subsequent applications.

[0003] A search revealed that Chinese patent CN217287209U discloses "a dicyclopentadiene extraction device, which solves the problem that existing distillation columns require pre-feeding of new dicyclopentadiene when discharging dicyclopentadiene, making it inconvenient to preheat the new dicyclopentadiene. This results in a slow distillation speed relying solely on heating within the distillation column, affecting processing efficiency. Furthermore, during the evaporation of water from the dicyclopentadiene, some water adheres to the inner wall of the distillation column, accumulating over time and mixing with the dicyclopentadiene in the column's interior, thus affecting extraction purity." However, the following drawbacks still exist:

[0004] (1) The side wall of the extraction device body is heated only by the preheating mechanism, without direct heating of the inside of the extraction device body, resulting in low heating efficiency and failure to reduce the amount of heating required by the distillation column.

[0005] (2) The lack of certain condensation measures prevents the vapor from the top of the distillation column from being condensed into liquid, and the internal stirring is not allowed during the distillation process, which easily leads to the mixing of the internal liquid and gas phases.

[0006] Therefore, we have made improvements to this and proposed a distillation apparatus for the preparation of high-purity dicyclopentadiene. Utility Model Content

[0007] The purpose of this invention is to address the current problems of low heating efficiency due to the lack of direct heating inside the extraction device, which prevents the reduction of the heating required for the distillation column, and the lack of condensation measures to prevent the vapor from the top of the distillation column from condensing into liquid.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0009] A distillation apparatus for the preparation of high-purity dicyclopentadiene, to improve the above-mentioned problems.

[0010] The present invention is as follows:

[0011] The distillation column includes a preheating component fixedly installed on one side of the distillation column, a reboiling component installed on one side of the bottom of the distillation column, a condensing component installed on the top of the distillation column, and a reflux component installed on one side of the bottom of the distillation column.

[0012] The preheating assembly includes a connecting plate, a preheater, a gas inlet, a gas outlet, and a gas pipe. The connecting plate is fixedly installed on the side of the distillation column body, and the preheater is fixedly installed on the connecting plate. There are two sets of connecting plates to provide support for the preheater. The gas inlet is located on one side of the bottom of the preheater, and the gas outlet is located at one end of the top of the preheater. The gas pipe is located at both the gas inlet and the gas outlet, and one end of the gas pipe is connected to the top of the preheater.

[0013] As a preferred technical solution of this utility model, the reboiling assembly includes a support frame, a reboiler, a conveying pipe, and an output pipe. The support frame is fixedly installed on one side of the distillation column body, the reboiler is fixedly installed on the support frame, one end of the conveying pipe is located on the upper side of the reboiler, one end of the output pipe is located at the top and bottom of the reboiler respectively, and the other end of the output pipe is connected to the bottom of the distillation column body.

[0014] As a preferred technical solution of this utility model, the reboiling assembly includes a support frame, a reboiler, a conveying pipe, and an output pipe. The support frame is fixedly installed on one side of the distillation column body, the reboiler is fixedly installed on the support frame, one end of the conveying pipe is located on the upper side of the reboiler, one end of the output pipe is located at the top and bottom of the reboiler respectively, and the other end of the output pipe is connected to the bottom of the distillation column body.

[0015] As a preferred technical solution of this utility model, the condensation assembly includes a condenser and a steam pipe. The condenser is fixedly installed on the top of the support frame, and one end of the steam pipe is installed at the top end of the distillation column and the other end is connected to the condenser.

[0016] As a preferred technical solution of this utility model, a raw material tank is provided on one side of the distillation column, a tank cover is provided on the top of the raw material tank, and a raw material inlet is provided at the bottom of the raw material tank.

[0017] As a preferred technical solution of this utility model, a first pump pipe is provided at the output pipe at the bottom of the reboiler, and a first pump body is fixedly provided at the other end of the first pump pipe.

[0018] As a preferred technical solution of this utility model, a raw material pipe is provided at the raw material inlet, and a second pump body is provided at the connection between the raw material pipe and the gas phase pipe.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] In the solution of this utility model:

[0021] 1. By setting up a preheating component, the material entering the distillation column can be preheated to near the boiling temperature. This allows the material to evaporate more quickly after entering the distillation column, thereby improving distillation efficiency, reducing the amount of heating required for the distillation column, and thus reducing energy consumption. It also ensures that the material has a stable temperature and composition when entering the distillation column, which is conducive to the stable operation of the distillation process. The reboiling component provides heat for the distillation process, causing the liquid phase at the bottom of the column to vaporize and form rising steam, which heats the liquid at the bottom of the column.

[0022] 2. The condenser assembly condenses the vapor from the top of the distillation column into liquid, providing liquid product for reflux and product collection. The reflux tank temporarily stores the product output from the condenser to ensure a stable product supply. The feed tank transports feed to the inside of the distillation column through the feed pipe. At the same time, the first and second pumps provide power for the overall transport of feed and reactants. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the distillation apparatus for the preparation of high-purity dicyclopentadiene provided by this utility model;

[0024] Figure 2 A partial structural diagram of the preheating and reboiling components of the distillation apparatus for the preparation of high-purity dicyclopentadiene provided by this utility model;

[0025] Figure 3 A partial structural diagram of the condenser and reflux assembly of the distillation apparatus for the preparation of high-purity dicyclopentadiene provided by this utility model;

[0026] Figure 4 A schematic diagram of the overall partial structure of the distillation apparatus for the preparation of high-purity dicyclopentadiene provided by this utility model;

[0027] Figure 5 This is a schematic diagram of the overall partial structure of the distillation apparatus for the preparation of high-purity dicyclopentadiene provided by this utility model.

[0028] The image shows:

[0029] 1. Distillation column body; 2. Preheating assembly; 3. Reboiler assembly; 4. Condenser assembly; 5. Reflux assembly; 201. Connecting plate; 202. Preheater; 203. Vapor inlet; 204. Vapor outlet; 205. Vapor pipe; 301. Support frame; 302. Reboiler; 303. Delivery pipe; 304. Output pipe; 401. Condenser; 402. Steam pipe; 501. Reflux pipe; 502. Reflux tank; 6. Feed tank; 7. Tank cover; 8. Feed port; 9. First pump pipe; 10. First pump body; 11. Feed pipe; 12. Second pump body. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0031] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment proposes a distillation apparatus for the preparation of high-purity dicyclopentadiene, including a distillation column 1, a preheating component 2 fixedly disposed on one side of the distillation column 1, a reboiling component 3 disposed on one side of the bottom of the distillation column 1, a condensation component 4 disposed on the top of the distillation column 1, and a reflux component 5 disposed on one side of the bottom of the distillation column 1.

[0035] The preheating assembly 2 includes a connecting plate 201, a preheater 202, a gas inlet 203, a gas outlet 204, and a gas pipe 205. The connecting plate 201 is fixedly installed on the side of the distillation column body 1, and the preheater 202 is fixedly installed on the connecting plate 201. Two sets of connecting plates 201 are used to support the preheater 202. The gas inlet 203 is located at the bottom of the preheater 202, and the gas outlet 204 is located at the top of the preheater 202. The gas pipe 205... Located at the gas phase inlet 203 and gas phase outlet 204, one end of the gas phase pipe 205 is connected to the top of the preheater 202. It can preheat the material entering the distillation column 1 to near the boiling temperature, so that the material can evaporate faster after entering the distillation column 1, thereby improving the distillation efficiency, reducing the heating required for the distillation column 1, and thus reducing energy consumption. It also ensures that the material has a stable temperature and composition when entering the distillation column 1, which is conducive to the stable operation of the distillation process.

[0036] like Figure 3 As shown, in a preferred embodiment, based on the above method, the reboiling assembly 3 further includes a support frame 301, a reboiler 302, a conveying pipe 303, and an output pipe 304. The support frame 301 is fixedly installed on one side of the distillation column 1, the reboiler 302 is fixedly installed on the support frame 301, one end of the conveying pipe 303 is located above the reboiler 302, one end of the output pipe 304 is located at the top and bottom of the reboiler 302 respectively, and the other end of the output pipe 304 is connected to the bottom of the distillation column 1 to provide heat for the distillation process, so that the liquid phase of the distillation column 1 is vaporized to form rising steam, which heats the liquid in the distillation column 1.

[0037] like Figure 3 As shown, in a preferred embodiment, based on the above method, the condensation assembly 4 further includes a condenser 401 and a steam pipe 402. The condenser 401 is fixedly installed on the top of the support frame 301. One end of the steam pipe 402 is installed at the top of the distillation column 1 and the other end is connected to the condenser 401. The steam from the top of the distillation column 1 is condensed into liquid to provide liquid product for reflux and product collection.

[0038] like Figure 3 As shown, in a preferred embodiment, based on the above method, the reflux assembly 5 further includes a reflux pipe 501 and a reflux tank 502. One end of the reflux pipe 501 is located at the bottom of the condenser 401, and the reflux tank 502 is located on one side of the distillation column body 1. The other end of the reflux pipe 501 is connected to the top of the reflux tank 502. The reflux tank 502 temporarily stores the product output from the condenser 401 to ensure a stable supply of the product.

[0039] like Figure 2As shown, in a preferred embodiment, based on the above method, a raw material tank 6 is further provided on one side of the distillation column 1, a tank cover 7 is provided on the top of the raw material tank 6, a raw material inlet 8 is provided on the bottom of the raw material tank 6, and the raw material tank 6 conveys raw material into the distillation column 1 through the raw material pipe 11.

[0040] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, a first pump pipe 9 is further provided at the output pipe 304 at the bottom of the reboiler 302, and a first pump body 10 is fixedly provided at the other end of the first pump pipe 9. The first pump body 10 will further promote the high-temperature delivery of the output pipe 304 at the bottom of the reboiler 302.

[0041] like Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, a raw material pipe 11 is further provided at the raw material port 8, and a second pump body 12 is provided at the connection between the raw material pipe 11 and the gas phase pipe 205. The first pump body 10 and the second pump body 12 provide power for the overall transport of raw materials and reactants.

[0042] Specifically, in use, the distillation apparatus for the preparation of high-purity dicyclopentadiene works as follows: the raw material in the raw material tank 6 is transported to the distillation column 1 by the second pump 12, and then the preheater 202 preheats the material entering the distillation column 1 to near the boiling temperature, thereby improving the distillation efficiency. After passing through the distillation column 1, the steam rises, and then the condenser 401 condenses the steam from the top of the distillation column 1 into liquid. The collected liquid product is temporarily stored in the reflux tank 502 to ensure a stable supply of the product.

[0043] All technical features in this embodiment can be freely combined according to actual needs.

[0044] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A distillation apparatus for the preparation of high-purity dicyclopentadiene, comprising a distillation column (1), characterized in that, A preheating component (2) is fixedly installed on one side of the distillation column (1), a reboiling component (3) is installed on one side of the bottom of the distillation column (1), a condensing component (4) is installed on the top of the distillation column (1), and a reflux component (5) is installed on one side of the bottom of the distillation column (1). The preheating assembly (2) includes a connecting plate (201), a preheater (202), a gas inlet (203), a gas outlet (204), and a gas pipe (205). The connecting plate (201) is fixedly installed on the side of the distillation column body (1). The preheater (202) is fixedly installed on the connecting plate (201). There are two sets of connecting plates (201) to provide support for the preheater (202). The gas inlet (203) is located on one side of the bottom of the preheater (202). The gas outlet (204) is located at one end of the top of the preheater (202). The gas pipe (205) is located at the gas inlet (203) and the gas outlet (204). One end of the gas pipe (205) is connected to the top of the preheater (202).

2. The distillation apparatus for the preparation of high-purity dicyclopentadiene according to claim 1, characterized in that, The reboiling assembly (3) includes a support frame (301), a reboiler (302), a conveying pipe (303), and an output pipe (304). The support frame (301) is fixedly installed on one side of the distillation column (1). The reboiler (302) is fixedly installed on the support frame (301). One end of the conveying pipe (303) is located on the upper side of the reboiler (302). One end of the output pipe (304) is located at the top and bottom of the reboiler (302), respectively. The other end of the output pipe (304) is connected to the bottom of the distillation column (1).

3. The distillation apparatus for the preparation of high-purity dicyclopentadiene according to claim 2, characterized in that, The condensation assembly (4) includes a condenser (401) and a steam pipe (402). The condenser (401) is fixedly installed on the top of the support frame (301). One end of the steam pipe (402) is installed at the top of the distillation column body (1) and the other end is connected to the condenser (401).

4. The distillation apparatus for the preparation of high-purity dicyclopentadiene according to claim 3, characterized in that, The reflux assembly (5) includes a reflux pipe (501) and a reflux tank (502). One end of the reflux pipe (501) is located at the bottom of the condenser (401), and the reflux tank (502) is located on one side of the distillation column (1). The other end of the reflux pipe (501) is connected to the top of the reflux tank (502).

5. The distillation apparatus for the preparation of high-purity dicyclopentadiene according to claim 1, characterized in that, A raw material tank (6) is provided on one side of the distillation column (1), a tank cover (7) is provided on the top of the raw material tank (6), and a raw material inlet (8) is provided on the bottom of the raw material tank (6).

6. The distillation apparatus for the preparation of high-purity dicyclopentadiene according to claim 2, characterized in that, A first pump pipe (9) is provided at the output pipe (304) at the bottom of the reboiler (302), and a first pump body (10) is fixedly provided at the other end of the first pump pipe (9).

7. A distillation apparatus for the preparation of high-purity dicyclopentadiene according to claim 5, characterized in that, A raw material pipe (11) is provided at the raw material port (8), and a second pump body (12) is provided at the connection between the raw material pipe (11) and the gas phase pipe (205).

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