Corrosion-resistant lining structure of chemical reaction kettle

Abstract

The utility model relates to a corrosion-resistant lining structure of a chemical reaction kettle. The corrosion-resistant lining structure comprises a lining cylinder, a discharge pipe and a sealing ring, the lining cylinder is arranged in the reaction kettle, the side face and the bottom face of the lining cylinder are tightly attached to the inner wall of the reaction kettle, a first through hole is formed in the center of the bottom face, and a second through hole consistent with the first through hole in diameter is formed in the center of the bottom face of the reaction kettle. The discharging pipe is of a hollow structure and comprises a sealing locking ring, a first pipe and a second pipe, the sealing locking ring is coaxially arranged at the top of the first pipe, the bottom of the sealing locking ring is tightly attached to the bottom face of the lining cylinder, the first pipe is slidably sleeved with the first through hole and matched in the second through hole in a threaded mode, the second pipe is arranged at the bottom of the first pipe, the outer diameter of the second pipe is smaller than that of the first pipe, and a valve is arranged on the second pipe. And the sealing ring is arranged between the sealing locking ring and the bottom surface of the lining cylinder. During installation, the rotary discharge pipe fixes and seals the locking ring and the lining cylinder through thread locking force, the sealing performance is guaranteed, the lining cylinder and the reaction kettle are prevented from moving relatively, operation is easy and convenient when the lining is replaced, and the valve can control product discharge.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment, and in particular to a corrosion-resistant inner lining structure for a chemical reaction vessel. Background Technology

[0002] In the field of chemical production, reaction vessels are key equipment for carrying out various chemical reactions. However, chemical reactions often involve various highly corrosive, high-temperature, or high-pressure chemicals. These substances can cause severe corrosion to the inner walls of the reaction vessels, not only shortening their service life but also potentially causing safety accidents such as leaks and explosions, threatening the lives of production personnel and the property of the company.

[0003] Traditional reactors typically improve their corrosion resistance by applying anti-corrosion treatments to the inner wall of the reactor, such as installing an anti-corrosion layer. However, this method has certain limitations. Once the anti-corrosion layer is damaged, it is difficult and costly to repair. Utility Model Content

[0004] The purpose of this utility model is to provide a corrosion-resistant inner lining structure for chemical reactors, in order to solve the technical problem that once the anti-corrosion layer of traditional reactors is damaged, it is difficult to repair and the repair cost is high.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a corrosion-resistant lining structure for a chemical reactor, the corrosion-resistant lining structure for the chemical reactor comprising:

[0006] The inner liner is disposed inside the reactor. The side and bottom surfaces of the inner liner are in close contact with the inner wall of the reactor. A first through hole is provided at the center of the bottom surface of the inner liner, and a second through hole with the same diameter as the first through hole is provided at the center of the bottom surface of the reactor. The inner wall of the second through hole is provided with internal threads.

[0007] The discharge pipe is a hollow structure and includes a sealing locking ring, a first pipe, and a second pipe. The sealing locking ring is coaxially disposed at the top of the first pipe, and the bottom of the sealing locking ring is in close contact with the bottom surface of the inner liner. The first pipe is slidably sleeved on the first through hole, and the first pipe is threaded into the second through hole. The second pipe is disposed at the bottom of the first pipe, and the outer diameter of the second pipe is smaller than the outer diameter of the first pipe. A valve is disposed on the second pipe, and the distance from the outermost edge of the valve to the central axis of the second pipe is smaller than the radius of the first pipe.

[0008] A sealing ring is disposed between the sealing locking ring and the bottom surface of the inner liner.

[0009] In one embodiment, the sealing locking ring, the first tube, and the second tube are an integral structure.

[0010] In one embodiment, a hexagonal nut structure that is easy to assemble and disassemble is fixed on the second tube, and the distance between the outermost edge of the hexagonal nut structure and the central axis of the second tube is less than the radius of the first tube.

[0011] In one embodiment, the sealing ring is made of fluororubber.

[0012] In one embodiment, the top cover of the reactor is installed on the reactor via a flange structure, and the top cover is provided with an inlet and a stirring device.

[0013] The above-described technical solutions in the embodiments of this utility model have at least the following technical effects or advantages:

[0014] The corrosion-resistant lining structure for chemical reactors provided in this embodiment of the invention features an inner lining cylinder inside the reactor. This inner lining cylinder effectively isolates corrosive substances from the reactor body, reducing the erosion of the reactor's inner wall by corrosive substances, greatly improving the reactor's corrosion resistance, extending its service life, and reducing the company's equipment replacement costs.

[0015] Furthermore, the sealing and locking ring on the discharge pipe is coaxially mounted on the top of the first pipe. During installation, the position is adjusted downwards by rotating the discharge pipe, and the threaded locking force between the first pipe and the second through hole is used to lock the sealing and locking ring to the bottom surface of the inner liner, ensuring that the bottom of the sealing and locking ring is tightly against the bottom surface of the inner liner. This design effectively prevents liquid leakage between the sealing and locking ring and the first through hole, ensuring the sealing performance of the reactor and reducing raw material waste and environmental pollution.

[0016] The sealing locking ring, through threaded tightening force, presses and fixes the inner liner to the reactor, preventing relative movement between the inner liner and the reactor during the reaction. This not only ensures the stability and reliability of the reaction but also reduces wear between the inner liner and the inner wall of the reactor, further extending the service life of the inner liner.

[0017] When the reactor needs to have its liner replaced after prolonged use, or when a different reactor is required for the desired reaction, simply loosen the discharge pipe by rotating it and pull it out from the bottom up. This will loosen the liner, making it easy to remove the old liner from the reactor. Then, install the new liner into the reactor following the same steps. The operation is simple and convenient, greatly shortening maintenance time and reducing maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A cross-sectional view of the corrosion-resistant lining structure of a chemical reactor provided in an embodiment of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the disassembly process of the corrosion-resistant lining structure of a chemical reactor.

[0021] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0022] The labels for the various figures are as follows:

[0023] 1. Inner liner; 2. Discharge pipe; 3. Sealing ring; 4. Reactor; 11. First through hole; 21. Sealing locking ring; 22. First pipe; 23. Second pipe; 41. Second through hole; 42. Top cover; 43. Inlet; 44. Stirring device; 231. Valve; 232. Hexagonal nut structure. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Please see Figures 1 to 3 This application provides a corrosion-resistant lining structure for a chemical reactor 4, including an inner lining cylinder 1, a discharge pipe 2, and a sealing ring 3. The inner lining cylinder 1 is disposed inside the reactor 4, with its side and bottom surfaces tightly attached to the inner wall of the reactor 4. A first through hole 11 is provided at the center of the bottom surface of the inner lining cylinder 1, and a second through hole 41 with the same diameter as the first through hole 11 is provided at the center of the bottom surface of the reactor 4. The inner wall of the second through hole 41 is provided with internal threads. The discharge pipe 2 is a hollow structure, comprising a sealing locking ring 21, a first pipe 22, and a second pipe 23. The sealing locking ring 21 is coaxially disposed on the top of the first pipe 22, and its bottom is in close contact with the bottom surface of the inner liner 1. The first pipe 22 is slidably sleeved on the first through hole 11, and the first pipe 22 is threaded into the second through hole 41. The second pipe 23 is disposed at the bottom of the first pipe 22, and its outer diameter is smaller than that of the first pipe 22. A valve 231 is disposed on the second pipe 23, and the distance from the outermost edge of the valve 231 to the central axis of the second pipe 23 is smaller than the radius of the first pipe 22 (to ensure that the valve 231 can pass through the first through hole 11 and the second through hole 41). A sealing ring 3 is disposed between the sealing locking ring 21 and the bottom surface of the inner liner 1.

[0029] This invention involves installing an inner liner 1 (specifically, the inner liner 1 can be made of composite ceramic wear-resistant material) inside a reaction vessel 4. A first through hole 11 and a second through hole 41 of the same diameter are respectively provided at the center of the bottom surface of the inner liner 1 and the center of the bottom surface of the reaction vessel 4. The inner wall of the second through hole 41 is provided with internal threads. A discharge pipe 2 (the discharge pipe 2 is made of rigid corrosion-resistant material) is provided to discharge the reaction products. A sealing locking ring 21 on the discharge pipe 2 is coaxially mounted on the top of the first pipe 22, and the second pipe 23 is mounted on the bottom of the first pipe 22. During installation, the discharge pipe 2 is... The discharge pipe 2 is inserted from top to bottom into the first through hole 11 and the second through hole 41. Then, by rotating the discharge pipe 2 downwards, its position is adjusted. The threaded locking force of the first pipe 22 and the second through hole 41 locks the sealing locking ring 21 to the bottom surface of the inner liner 1, ensuring the bottom of the sealing locking ring 21 is tightly against the bottom surface of the inner liner 1. This prevents liquid leakage between the sealing locking ring 21 and the first through hole 11. Furthermore, the threaded locking force of the sealing locking ring 21 presses the inner liner 1 tightly into the reactor 4, preventing relative movement between the inner liner 1 and the reactor 4 during the reaction. The valve 231 on the second pipe 23 controls the opening and closing of the discharge pipe 2 to discharge the product after the reaction. When the reactor 4 requires replacement of the inner liner 1 after prolonged use, or when a different reactor 4 is needed based on reaction requirements, simply rotate and loosen the discharge pipe 2, then pull it out from bottom to top to loosen the inner liner 1 (e.g., Figure 2 As shown in the figure, so that the old inner liner 1 can be removed from the reactor 4, and then the new inner liner 1 can be installed into the reactor 4 according to the above steps.

[0030] In one embodiment, the sealing locking ring 21, the first tube 22, and the second tube 23 are an integral structure. This integral structure design makes the discharge tube 2 more robust and stable, avoiding problems such as loosening and leakage that may occur due to loose connections between components.

[0031] In one embodiment, a hexagonal nut structure 232 for easy disassembly and assembly is fixed on the second tube 23. The distance between the outermost edge of the hexagonal nut structure 232 and the central axis of the second tube 23 is less than the radius of the first tube 22. By providing the hexagonal nut structure 232 on the second tube 23, when it is necessary to tighten the discharge tube 2, it is only necessary to use a wrench to hold the hexagonal nut structure 232 to easily tighten the discharge tube 2.

[0032] In one embodiment, the sealing ring 3 is made of fluororubber. Fluororubber has excellent corrosion resistance, high temperature resistance, and aging resistance, and can be used for a long time in the harsh working environment of the chemical reactor 4 without easily being damaged. The sealing ring 3 made of fluororubber can effectively resist the erosion of various corrosive substances inside the reactor 4, ensuring the stable sealing performance of the sealing ring 3 and preventing liquid leakage.

[0033] In one embodiment, the top cover 42 of the reactor 4 is mounted on the reactor 4 via a flange structure, and the top cover 42 is provided with an inlet 43 and a stirring device 44. When it is necessary to disassemble or assemble the inner liner 1, the top cover 42 of the reactor 4 can be removed to facilitate the installation / removal of the inner liner 1.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 corrosion-resistant lining structure for a chemical reaction vessel, characterized in that, The corrosion-resistant lining structure of the chemical reactor includes: The inner liner is disposed inside the reactor. The side and bottom surfaces of the inner liner are in close contact with the inner wall of the reactor. A first through hole is provided at the center of the bottom surface of the inner liner, and a second through hole with the same diameter as the first through hole is provided at the center of the bottom surface of the reactor. The inner wall of the second through hole is provided with internal threads. The discharge pipe is a hollow structure and includes a sealing locking ring, a first pipe, and a second pipe. The sealing locking ring is coaxially disposed at the top of the first pipe, and the bottom of the sealing locking ring is in close contact with the bottom surface of the inner liner. The first pipe is slidably sleeved on the first through hole, and the first pipe is threaded into the second through hole. The second pipe is disposed at the bottom of the first pipe, and the outer diameter of the second pipe is smaller than the outer diameter of the first pipe. A valve is disposed on the second pipe, and the distance from the outermost edge of the valve to the central axis of the second pipe is smaller than the radius of the first pipe. A sealing ring is disposed between the sealing locking ring and the bottom surface of the inner liner.

2. The corrosion-resistant lining structure for a chemical reactor according to claim 1, characterized in that: The sealing locking ring, the first tube, and the second tube are an integral structure.

3. The corrosion-resistant lining structure for a chemical reactor according to claim 1, characterized in that: The second tube is fixed with a hexagonal nut structure that is easy to assemble and disassemble. The distance between the outermost edge of the hexagonal nut structure and the central axis of the second tube is less than the radius of the first tube.

4. The corrosion-resistant lining structure for a chemical reactor according to claim 1, characterized in that: The sealing ring is made of fluororubber.

5. The corrosion-resistant lining structure for a chemical reactor according to claim 1, characterized in that: The top cover of the reactor is installed on the reactor via a flange structure, and the top cover is provided with an inlet and a stirring device.

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