Anti-vortex structure of lined reactor

Abstract

This invention provides an anti-vortex structure for a lined reactor, relating to the field of reactor technology. The device includes a connecting pipe, a first flange, a second flange, and anti-vortex baffles. By adding a connecting pipe, a first flange, and a second flange to the outside of the reactor to connect the anti-vortex baffles, the difficulty of lining is greatly reduced compared to irregularly shaped baffles or connecting components, ensuring reliable lining thickness and quality. The invention features a simple, stable, and reliable structure, and the flange connection method offers convenient installation and replacement, as well as a simple and reliable connection method. Therefore, this invention can effectively reduce the complexity of the reactor structure and extend the service life of the reactor while achieving the anti-vortex effect.

Description

Technical Field

[0001] This invention relates to the field of reactor technology, and in particular to an anti-vortex structure for a lined reactor. Background Technology

[0002] Reactor equipment is widely used in modern process systems. Because the agitator in a reactor rotates in a fixed direction, eddies can easily form inside the vessel, which is detrimental to the reaction. Currently, baffles are typically installed inside the reactor to prevent eddies. Reactor baffles are mostly constructed by welding within the reactor or by welding connecting components within the reactor, and then connecting the baffles using bolts or other methods.

[0003] However, for some special materials, such as reaction vessels containing acidic materials, the vessel body needs to be lined. Welded components and baffles in such lined reaction vessels also require lining. However, due to the irregular structure of these components, the lining thickness and strength are more prone to problems. During use, the lining in these locations may be damaged, leading to corrosion of the entire vessel body, causing overall damage, seriously affecting safe production, and increasing maintenance costs. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a eddy current prevention structure for a lined reactor to solve the above problems.

[0005] To achieve the above objectives, the present invention provides a vortex-proof structure for a lined reactor, comprising: a connecting pipe, a first flange, a second flange, and an anti-vortex baffle; a plurality of connecting pipes are connected to the side wall of the reactor, and an installation port is provided on the side wall of the reactor opposite to the connecting pipes; the first flange is connected to the end of the connecting pipe, the second flange is connected to the first flange, and the anti-vortex baffle is connected to the second flange, the anti-vortex baffle is inserted into the connecting pipe, and the end of the anti-vortex baffle extends into the reactor through the installation port.

[0006] Compared with existing technologies, the advantages of this invention are as follows: This invention connects the anti-eddy current baffle by adding a connecting pipe, a first flange, and a second flange to the outside of the reactor. Compared with irregularly shaped baffles or connecting components, the lining difficulty is greatly reduced, and the lining thickness and quality are reliably guaranteed. The structure of this invention is simple, stable, and reliable. The flange connection method offers convenient installation and replacement, and a simple and reliable connection method. Therefore, this invention can effectively reduce the complexity of the reactor structure and extend the service life of the reactor while achieving the anti-eddy current effect.

[0007] Furthermore, the anti-vortex baffle is an arc-shaped plate or a round tube with a closed end structure.

[0008] Furthermore, the reactor is connected to at least one layer of connecting pipes, which includes four connecting pipes that are evenly distributed along the circumference of the reactor.

[0009] Furthermore, two layers of connecting pipes are connected to the side wall of the reactor, and the two layers of connecting pipes are located at the upper and lower equidistant lines of the rated liquid level of the reactor.

[0010] Furthermore, a polytetrafluoroethylene gasket is provided between the first flange and the second flange.

[0011] Furthermore, the anti-vortex baffle is equipped with an anti-corrosion lining. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the installation of the anti-eddy current structure of the lined reactor provided in an embodiment of the present invention;

[0013] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0014] Figure 3 A cross-sectional view of the anti-vortex baffle of the anti-vortex structure of the lined reactor provided in an embodiment of the present invention;

[0015] Figure 4 A side view of the anti-vortex baffle of the anti-vortex structure of the lined reactor provided in an embodiment of the present invention.

[0016] The following are marked in the diagram: 1. Reactor; 2. Connecting pipe; 3. First flange; 4. Second flange; 5. Circular pipe. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0018] like Figures 1 to 4 As shown, the present invention proposes an anti-vortex structure for a lined reactor 1, which consists of a connecting pipe 2, a first flange 3, a second flange 4, and anti-vortex baffles. Several connecting pipes 2 are fixedly connected to the side wall of the reactor 1. Installation ports are provided on the side wall of the reactor 1 opposite to the connecting pipes 2, and the installation ports are located within the normal liquid level range of the reactor body to ensure that the installed anti-vortex baffles can effectively block the generation of liquid vortices.

[0019] The reactor 1 is connected to at least one layer of connecting pipes 2, which includes four connecting pipes 2 evenly distributed along the circumference of the reactor 1. The orientation of the connecting pipes 2 is offset from the lug-type support legs of the equipment to avoid mutual interference between the support legs and the connecting pipes 2. The specific number and orientation of the connecting pipes 2 need to be calculated based on the size of the anti-vortex baffle, the structure of the reactor body, the stirring speed, and the characteristics of the material inside the reactor. Preferably, two layers of connecting pipes 2 are connected to the side wall of the reactor 1, and the two layers of connecting pipes 2 are respectively located at the upper and lower equidistant lines of the rated liquid level of the reactor 1.

[0020] A first flange 3 is fixedly connected to one end of the connecting pipe 2, and a second flange 4 is connected to the outer end of the first flange 3. A polytetrafluoroethylene gasket is placed between the first flange and the second flange to provide a seal. The first flange 3 and the second flange 4 are fastened together with bolts. The connection structure is simple, reliable, and easy to install and replace.

[0021] An anti-vortex baffle is fixedly connected to the second flange 4. The anti-vortex baffle is installed in the connecting pipe 2, and its end extends into the reactor 1 through the installation port. The anti-vortex baffle is lined with an anti-corrosion layer. The anti-vortex baffle is either an arc-shaped plate or a round pipe 5 with a closed end. The specific length of the anti-vortex baffle needs to be confirmed based on specific production conditions. When an arc-shaped plate is used as the anti-vortex baffle, the direction of the arc-shaped opening of the arc-shaped plate is opposite to the direction of the stirring of the reactor 1.

[0022] The anti-eddy current structure of the lined reactor 1 is described below with reference to specific embodiments: Example

[0023] Reactor 1 is a siloxane hydrolysis reactor. The connecting pipes 2 are arranged in two layers, with four connecting pipes evenly distributed in each layer. A first flange 3, model DN250-16RF (HG / T20592-2009), is connected to each connecting pipe 2. This standard flange is commonly used for equipment pipe fittings and has high versatility. Connecting pipe 2 uses a φ273×4 pipe and is 250mm long. The anti-eddy current baffle is a round pipe 5 with a closed end structure. One end of the round pipe 5 connects to the second flange 4, which is the same model as the first flange 3. The round pipe 5 is made of φ219*5 pipe and is 400mm long. The other end of the round pipe 5 is sealed with a 10mm thick steel plate welded together to ensure the structural strength of the anti-eddy current baffle. The weld is then ground smooth, removing burrs and flash. The fabricated anti-eddy current baffle is then lined with fluoropolymer for corrosion protection.

[0024] The medium inside the reactor is hydrochloric acid and siloxane, and the overall pH of the material is around 5, showing obvious acidity.

[0025] The reactor lining is required to be made of F40 material with a lining thickness of not less than 2mm. After passing a 15kV electric spark test, all pipe openings (including material inlet and outlet and connecting pipe 2) are found to meet the requirements.

[0026] During the use of reactor 1, disassembly and inspection were carried out. The inspection involved removing the anti-eddy current baffle and performing a visual inspection and electrical spark test on the anti-eddy current baffle. No problems were found with the anti-eddy current baffle or its lining. The disassembly and inspection process for the anti-eddy current baffle was simple and the maintenance efficiency was extremely high.

[0027] Comparative example:

[0028] Considering the impact on production, the comparative example and the reactor 1 of the embodiment were not carried out under the same system and the same medium. Instead, the requirements of the equipment for the lining were reduced to conduct the experiment. The comparison equipment was a primary alkali washing reactor.

[0029] The reaction vessel baffle adopts a traditional structure, with connecting components welded inside the vessel and lined with a layer. The baffle is a traditional baffle liner and is connected to the connecting components inside the vessel by titanium bolts to form a complete baffle structure.

[0030] The medium inside the reactor is a siloxane and sodium hydroxide alkaline solution with a slightly alkaline pH.

[0031] The reactor lining is required to be F40 lining with a thickness of not less than 2mm, and undergo a 15kV spark test. During the inspection, some connecting components showed breakdown at 15kV bolt holes, and a 9kV spark test was also performed.

[0032] Reactor 1 underwent disassembly and inspection during its use. Each inspection required personnel to enter the reactor, making the maintenance process complex, time-consuming, labor-intensive, and inherently dangerous. After one year of use, damage was observed in the lining of the bolt holes of the connecting components. Due to the characteristics of the medium inside the reactor, corrosion damage occurred to the steel structure of the reactor body. If the medium inside the reactor is the same as that in the control sample, corrosion and leakage of the steel structure may occur, leading to serious problems such as equipment leakage and system shutdown. Replacement would require the entire reactor body to be replaced.

[0033] Based on the above comparison, it can be seen that the anti-vortex structure of the lined reactor 1 proposed in this invention has a simple structure, regular shape, and reliable lining quality, effectively improving equipment reliability, reducing leakage risk, and ensuring stable production safety. Furthermore, the installation and replacement procedure for the anti-vortex baffles is simple, and maintenance is convenient.

[0034] The embodiments of this invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A eddy current prevention structure for a lined reactor, comprising: The reactor comprises a connecting pipe, a first flange, a second flange, and an anti-vortex baffle; characterized in that a plurality of connecting pipes are connected to the side wall of the reactor, and an installation port is provided on the side wall of the reactor opposite to the connecting pipes; a first flange is connected to the end of the connecting pipe, a second flange is connected to the first flange, and an anti-vortex baffle is connected to the second flange, the anti-vortex baffle is inserted into the connecting pipe, and the end of the anti-vortex baffle extends into the reactor through the installation port; the anti-vortex baffle is a round pipe with a closed end structure.

2. The anti-eddy current structure for the lined reactor according to claim 1, characterized in that, The reactor is connected to at least one layer of connecting pipes, and the layer of connecting pipes includes four connecting pipes, which are evenly distributed along the circumference of the reactor.

3. The anti-eddy current structure for the lined reactor according to claim 2, characterized in that, Two connecting pipes are connected to the side wall of the reactor, and the two connecting pipes are located at the upper and lower equidistant lines of the rated liquid level of the reactor.

4. The anti-eddy current structure for the lined reactor according to claim 1, characterized in that, A polytetrafluoroethylene gasket is installed between the first flange and the second flange.

5. The anti-eddy current structure for the lined reactor according to claim 1, characterized in that, The anti-vortex baffle is equipped with an anti-corrosion lining.

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