A pipeline reactor for the preparation of azelaic acid

Abstract

This utility model discloses a pipeline reactor for the preparation of azelaic acid, belonging to the field of azelaic acid preparation technology. It aims to solve the problems in the existing technology where, in the later stages of azelaic acid preparation, the product concentration is high, leading to sedimentation, reduced flow rate and volume, and insufficient production efficiency. The reactor includes a pipe body, a base plate, and a vibration assembly. Helical blades are placed inside the pipe body, and the vibration assembly is fixedly installed on the pipe body. A pipe cap is threaded onto one end of the pipe body, and multiple sets of injection pipes are installed through the pipe cap. A discharge pipe is installed at the end of the pipe body away from the pipe cap. This pipeline reactor for azelaic acid preparation, through the vibration assembly, facilitates the provision of excitation force to the pipe body, thereby preventing sedimentation at high product concentrations, ensuring product flow rate and volume, and guaranteeing production efficiency. Furthermore, the lifting plate and chute prevent significant overall displacement of the device, while a third vibration damping pad absorbs vibration.

Description

Technical Field

[0001] This utility model belongs to the field of azelaic acid preparation technology, specifically relating to a pipeline reactor for the preparation of azelaic acid. Background Technology

[0002] Azelaic acid is an organic compound that appears as white to slightly yellow monoclinic prismatic crystals, needle-like crystals, or powder. It is used as a plasticizer and in alkyd resins, paints, and chemical synthesis. The preparation of azelaic acid requires a tubular reactor. The special structure of the tubular reactor allows the reactants to flow smoothly within the pipes, creating a turbulent environment. This significantly reduces the diffusion distance between reactants, allowing molecules to collide more frequently, thus accelerating the mass transfer process and increasing the reaction rate.

[0003] In the later stages of the azelaic acid preparation reaction, the product concentration is high, which easily leads to deposition (deposition refers to the accumulation and adhesion of material in the pipeline; for example, when the flow rate in the pipeline is too slow, the material residence time is prolonged, and deposition is more likely to occur), reducing the flow rate and flow volume, and affecting production efficiency. Therefore, a technical measure is proposed to solve the problem that under the existing technology, the high product concentration in the later stages of the azelaic acid preparation reaction easily leads to deposition, reducing the flow rate and flow volume, and thus requiring improvement in production efficiency. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a pipeline reactor for the preparation of azelaic acid, aiming to solve the problems that, in the later stages of the azelaic acid preparation reaction, the product concentration is high, sedimentation easily occurs, reducing flow rate and volume, and production efficiency needs to be improved.

[0006] (2) Technical solution

[0007] To address the aforementioned technical problems, this utility model provides a pipeline reactor for the preparation of azelaic acid, comprising a tube body, a bottom plate, and a vibration assembly. A helical blade is placed inside the tube body, and the vibration assembly is fixedly installed on the tube body. A tube cap is threaded onto one end of the tube body, and multiple sets of injection pipes are installed through the tube cap. A discharge pipe is installed at the end of the tube body furthest from the tube cap. Thanks to the vibration assembly, it is convenient to provide excitation force to the tube body, thereby preventing sedimentation at high product concentrations, ensuring product flow rate and volume, and guaranteeing production efficiency. Furthermore, the lifting plate and chute prevent significant overall displacement of the device, while a third vibration damping pad absorbs vibration.

[0008] Furthermore, a valve is provided on the discharge pipe.

[0009] Furthermore, multiple sets of evenly distributed vertical plates are installed on the upper surface of the base plate, and horizontal plates are installed between the vertical plates. A first damping pad is fitted on the lower part of the vertical plate, and a sliding groove is opened on the upper part of the vertical plate.

[0010] Furthermore, multiple sets of evenly distributed second vibration damping pads are embedded in the cross plate, and an mounting plate is installed on the upper part of the second vibration damping pads, with a spring installed on the upper part of the mounting plate.

[0011] Furthermore, the vibration assembly includes a top plate, with a lifting plate installed at the middle position of both ends of the top plate, and a third vibration damping pad is sleeved on the outside of the lifting plate.

[0012] Furthermore, the third damping pad, the lifting plate, and the slide groove are slidably adapted together, and the upper end of the spring is installed on the lower surface of the top plate.

[0013] Furthermore, a fixing ring is installed at the middle position of the upper surface of the top plate, the tube body is installed inside the fixing ring, a connecting plate is connected to the upper side of the fixing ring, the connecting plate is fixedly installed on the side of the tube body, and multiple sets of evenly distributed vibration motors are installed on the side of the connecting plate away from the tube body.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention absorbs the vibration generated by the vibration component by setting a first vibration damping pad and a second vibration damping pad, thereby reducing the impact of vibration on the device and the outside world.

[0017] By setting up the vibration components, it is convenient to provide excitation force to the pipe body, thereby preventing sedimentation when the product concentration is high, ensuring the product flow rate and volume, and ensuring production efficiency. In addition, the lifting plate and the chute prevent the device from shifting too much overall. At the same time, the third vibration damping pad absorbs the vibration. The vibration motor is started to generate excitation force, which is then transmitted to the connecting plate, pipe body, fixing ring, top plate, and lifting plate. The excitation force transmitted to the inside of the pipe body vibrates the material and prevents material sedimentation. The excitation force transmitted to the lifting plate is then transmitted to the third vibration damping pad, which absorbs the excitation force. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the tube.

[0021] Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a schematic diagram of the vibration assembly structure.

[0023] The labels in the attached diagram are as follows: 1. Pipe body; 2. Vibration assembly; 3. Base plate; 4. Vertical plate; 5. First damping pad; 6. Horizontal plate; 7. Discharge pipe; 8. Valve; 9. Pipe cover; 10. Injection pipe; 11. Spiral blade; 12. Second damping pad; 13. Mounting plate; 14. Spring; 15. Slide groove; 201. Top plate; 202. Fixing ring; 203. Lifting plate; 204. Connecting plate; 205. Vibration motor; 206. Third damping pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This specific embodiment is a pipeline reactor for the preparation of azelaic acid, and its structural schematic diagram is shown below. Figure 1 , Figure 2 , Figure 3As shown, the system includes a pipe body 1, a base plate 3, and a vibration assembly 2. A spiral blade 11 is placed inside the pipe body 1. The vibration assembly 2 is fixedly installed on the pipe body 1. A pipe cap 9 is threaded onto one end of the pipe body 1, and multiple sets of injection pipes 10 are installed through the pipe cap 9. A discharge pipe 7 is installed at the end of the pipe body 1 away from the pipe cap 9, and a valve 8 is provided on the discharge pipe 7. Multiple sets of evenly distributed vertical plates 4 are installed on the upper surface of the base plate 3, and horizontal plates 6 are installed between the vertical plates 4. A first damping pad 5 is fitted under the lower part of the vertical plates 4, and a sliding groove 15 is opened on the upper part of the vertical plates 4. Multiple sets of evenly distributed second damping pads 12 are embedded in the horizontal plates 6, and an mounting plate 13 is installed on the upper part of the second damping pads 12. A spring 14 is installed on the upper part of the mounting plate 13. In the actual preparation of azelaic acid, the raw material is injected through the injection pipe 10, and then the raw material is mixed under the action of the spiral blade 11 (the spiral blade 11 enables the fluid to move in a spiral motion within the pipe, generating a radial velocity component). This process promotes thorough mixing of materials across the pipe cross-section. This mixing facilitates better contact between different materials, accelerates the chemical reaction rate, and improves the uniformity and efficiency of the reaction. After mixing, the product is discharged by opening valve 8 (the preparation of azelaic acid is an exothermic reaction, and a fan can be used to cool the pipe body 1). During preparation, the vibration assembly 2 is simultaneously activated to vibrate the pipe body 1 (vibration keeps the material in the pipe in a state of continuous motion, disrupting the particle deposition tendency, and also helps improve the flow characteristics of the fluid in the pipe. It can reduce the boundary layer thickness of the fluid, reduce the friction between the fluid and the pipe wall, and allow the material to flow more smoothly). The vibration generated by the vibration assembly 2 is transmitted to the spring 14, mounting plate 13, and vertical plate 4, and then to the second damping pad 12, where it is absorbed. The vibration is then transmitted to the vertical plate 4, where the first damping pad 5 absorbs the vibration.

[0026] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the vibration assembly 2 includes a top plate 201, with a lifting plate 203 installed at the middle of both ends of the top plate 201. A third damping pad 206 is sleeved on the outside of the lifting plate 203. The third damping pad 206, the lifting plate 203, and the slide groove 15 are slidably adapted to each other. The upper end of the spring 14 is installed on the lower surface of the top plate 201. A fixing ring 202 is installed at the middle of the upper surface of the top plate 201. The tube body 1 is installed inside the fixing ring 202. A connecting plate 204 is connected to the upper side of the fixing ring 202. The connecting plate 204 is fixedly installed on the side of the tube body 1. On the side of the connecting plate 204 away from the pipe body 1, multiple sets of evenly distributed vibration motors 205 are installed. When the vibration motors 205 are started, they generate excitation force, which is then transmitted to the connecting plate 204, and then to the pipe body 1, the fixing ring 202, the top plate 201, and the lifting plate 203. The excitation force transmitted to the inside of the pipe body 1 vibrates the material to prevent material deposition. The excitation force transmitted to the lifting plate 203 is then transmitted to the third vibration damping pad 206, which absorbs the excitation force.

[0027] Working principle: In the actual preparation of azelaic acid, the raw material is injected through the injection pipe 10. The raw material is then mixed under the action of the spiral blades 11 (the spiral blades 11 cause the fluid to move in a spiral motion within the pipe, generating a radial velocity component, which promotes thorough mixing of the materials across the pipe cross-section. This mixing action helps different materials to contact each other better, accelerates the chemical reaction rate, and improves the uniformity and efficiency of the reaction). After mixing, the product is discharged by opening valve 8 (the preparation of azelaic acid is an exothermic reaction, and a fan can be used to cool the pipe body 1). Simultaneously, the vibration assembly 2 is activated to vibrate the pipe body 1 during preparation (vibration enables the pipe to vibrate). The material inside is in constant motion, disrupting the particle deposition trend. Simultaneously, vibration helps improve the flow characteristics of the fluid within the pipe. It can reduce the boundary layer thickness of the fluid, decrease the friction between the fluid and the pipe wall, allowing the material to flow more smoothly. The vibration generated by the vibration assembly 2 is transmitted to the spring 14, mounting plate 13, and vertical plate 4, and then to the second damping pad 12, where it is absorbed. The vibration is then transmitted to the vertical plate 4, where the first damping pad 5 absorbs the vibration. Through the arrangement of the first damping pad 5 and the second damping pad 12, the vibration generated by the vibration assembly 2 is absorbed, reducing the impact of vibration on the device and the external environment.

[0028] The specific working method of the vibration component 2 is as follows: the vibration motor 205 is started, the vibration motor 205 generates excitation force, and then the excitation force is transmitted to the connecting plate 204, and then to the pipe body 1, the fixing ring 202, the top plate 201, and the lifting plate 203. The excitation force transmitted to the inside of the pipe body 1 vibrates the material to prevent material deposition. The excitation force transmitted to the lifting plate 203 is then transmitted to the third damping pad 206, which absorbs the excitation force. Through the setting of the vibration component 2, it is convenient to provide excitation force to the pipe body 1, thereby preventing deposition when the product concentration is high, ensuring the product flow rate and flow rate, ensuring production efficiency, and the lifting plate 203 and the chute 15 prevent the device from shifting too much overall. At the same time, the third damping pad 206 absorbs the vibration.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipeline reactor for the preparation of azelaic acid, comprising a pipe body (1), a bottom plate (3), and a vibration assembly (2), characterized in that, The tube body (1) has a spiral blade (11) inside. The vibration assembly (2) is fixedly installed on the tube body (1). A tube cap (9) is threaded onto one end of the tube body (1). Multiple sets of injection pipes (10) are installed through the tube cap (9). A discharge pipe (7) is installed at the end of the tube body (1) away from the tube cap (9).

2. The pipeline reactor for the preparation of azelaic acid according to claim 1, characterized in that, A valve (8) is provided on the discharge pipe (7).

3. A pipeline reactor for the preparation of azelaic acid according to claim 1, characterized in that, The upper surface of the base plate (3) is equipped with multiple sets of evenly distributed vertical plates (4), and a horizontal plate (6) is installed between the vertical plates (4). A first damping pad (5) is sleeved on the lower part of the vertical plate (4), and a sliding groove (15) is opened on the upper part of the vertical plate (4).

4. A pipeline reactor for the preparation of azelaic acid according to claim 3, characterized in that, The horizontal plate (6) is embedded with multiple sets of evenly distributed second vibration damping pads (12), and an mounting plate (13) is installed on the upper part of the second vibration damping pads (12), and a spring (14) is installed on the upper part of the mounting plate (13).

5. A pipeline reactor for the preparation of azelaic acid according to claim 4, characterized in that, The vibration assembly (2) includes a top plate (201), and a lifting plate (203) is installed at the middle position of both ends of the top plate (201). A third vibration damping pad (206) is sleeved on the outside of the lifting plate (203).

6. A pipeline reactor for the preparation of azelaic acid according to claim 5, characterized in that, The third damping pad (206), the lifting plate (203), and the slide groove (15) are slidably adapted to each other, and the upper end of the spring (14) is installed on the lower surface of the top plate (201).

7. A pipeline reactor for the preparation of azelaic acid according to claim 6, characterized in that, A fixing ring (202) is installed in the middle of the upper surface of the top plate (201). The tube body (1) is installed inside the fixing ring (202). A connecting plate (204) is connected to the upper side of the fixing ring (202). The connecting plate (204) is fixedly installed on the side of the tube body (1). Multiple sets of evenly distributed vibration motors (205) are installed on the side of the connecting plate (204) away from the tube body (1).

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