Reaction kettle cleaning device and reaction kettle
By using an inner cylinder, outer cylinder, sealing plate, and air bladder in the reactor design, the problem of large amounts of descaling agent used in existing reactors is solved, achieving a cleaning effect with reduced costs.
Patent Information
- Application Number
- CN202423234042.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing reactors require a large amount of descaling agent during the descaling process, resulting in high production costs.
Design a reactor cleaning device, including an inner cylinder, an outer cylinder, a sealing plate, and an air bladder. The air bladder expands and contracts to occupy the internal space of the reactor, reducing the amount of descaling agent used.
By changing the state of the air bladder, the internal space of the vessel is effectively reduced, thereby reducing the amount of descaling agent used and lowering production costs.
Smart Images
Figure CN223698784U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reaction vessel technology, and in particular to a reaction vessel cleaning device and a reaction vessel. Background Technology
[0002] Reactors are widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical and food industries. They are pressure vessels used to complete processes such as sulfidation, nitration, hydrogenation, hydrocarbonation, polymerization and condensation.
[0003] For example, in the hydrometallurgical process for laterite nickel ore, ore slurry, sulfuric acid, and steam are typically injected into a high-pressure reactor for smelting to extract nickel and cobalt from the ore. After operation, the inner wall of the high-pressure reactor will form scale-like precipitates, mainly composed of iron and aluminum hydrolysis. When the scale accumulation is significant, cleaning is necessary, and currently, scale inhibitors are often added to slow down scale formation.
[0004] However, the above process requires a large amount of descaling agent, resulting in high production costs.
[0005] Therefore, there is an urgent need for a reactor cleaning device and a reactor to solve the above problems. Utility Model Content
[0006] The purpose of this invention is to provide a reactor cleaning device and reactor to solve the problem that existing reactors require a large amount of descaling agent during the descaling process, resulting in high production costs.
[0007] To achieve the above objectives, the following technical solution is provided:
[0008] A reactor cleaning device, installed inside the reactor body, comprises:
[0009] An inner cylinder is rotatably disposed within the vessel body, and the inner cylinder is connected to an external gas source.
[0010] An outer cylinder is fitted over the inner cylinder and fixedly connected to the inner cylinder. The outer wall of the outer cylinder has multiple openings evenly arranged along its circumference.
[0011] The device includes multiple sealing plates and multiple airbags. Each sealing plate corresponds to one of the openings and is located outside the outer cylinder. Each airbag corresponds to one of the sealing plates. One side of each airbag is fixedly connected to the sealing plate, and the other side of each airbag is fixedly connected to the outer wall of the inner cylinder and communicates with the inner cylinder. Each airbag can expand or contract to move the sealing plate relative to the corresponding opening and to a position where the opening is opened or closed.
[0012] As an alternative, the opening is a frame shape extending vertically, and the airbag is a long strip structure extending vertically.
[0013] As an alternative, when the airbag is in a contracted state, the portion of the airbag near the sealing plate has folds.
[0014] As an optional solution, the airbag has connection ports on both sides. One of the connection ports of the airbag is connected to the corresponding sealing plate, and the other connection port of the airbag is connected to the outer wall of the inner cylinder. A sealed cavity is formed between the airbag, the sealing plate, and the inner cylinder. An air hole is formed at the connection port directly opposite the outer cylinder to connect its interior and the sealed cavity.
[0015] As an optional solution, a plurality of guide members are also provided in the plurality of sealed cavities, the guide members connecting the inner cylinder and the sealing plate to limit the movement of the sealing plate in a direction perpendicular to the opening.
[0016] As an optional solution, the guide includes:
[0017] Two telescopic rods and a spring are provided. One end of each telescopic rod is hinged to the sealing plate, and the other end of each telescopic rod is slidably hinged to the inner cylinder in the vertical direction. The two telescopic rods are arranged sequentially in the vertical direction, and the distance between them gradually increases in the direction away from the sealing plate. The two ends of the spring are fixedly connected to the two telescopic rods respectively, and the spring is always in a tensioned state.
[0018] As an option, each of the sealed cavities may have multiple guide elements, which are arranged sequentially in the vertical direction.
[0019] As an optional solution, the sealing plate is an arc-shaped plate, and a sealing ring is provided on the side of the sealing plate near the outer cylinder.
[0020] Alternatively, the top of the inner cylinder extends outside the vessel body and is connected to the output end of the vessel body's drive component. The drive component drives the inner cylinder to rotate, thereby causing the reactor cleaning device to rotate and replace the vessel body's stirring shaft.
[0021] A reaction vessel includes a vessel body and the aforementioned reaction vessel cleaning device, wherein the reaction vessel cleaning device is installed in the vessel body.
[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0023] The reaction vessel cleaning device provided by this utility model replaces the stirring shaft. When the reaction vessel is in operation or shutdown, the air bladder is in a contracted state, contracting towards the gap between the inner and outer cylinders, and the corresponding sealing plate moves towards the opening until it closes the opening. At this time, the cleaning device does not occupy the internal space of the vessel. When it is necessary to clean the scale on the inner wall of the vessel, the air bladder is in an inflated state, expanding towards the outside of the outer cylinder, and the corresponding sealing plate moves away from the opening until it gradually occupies the internal cavity of the vessel. At this time, most of the internal cavity of the vessel is occupied by the air bladder, effectively reducing the actual internal space of the vessel, so that only a small amount of descaling agent needs to be poured in, thus reducing costs.
[0024] The reaction vessel provided by this utility model can be cleaned with less descaling agent by applying the above-mentioned reaction vessel cleaning device, thereby reducing costs. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 the content of the embodiments of this utility model and these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the structure of the gasbag in the reactor cleaning device provided in this embodiment of the present invention when it is in a contracted state;
[0027] Figure 2 for Figure 1 Sectional view at point AA;
[0028] Figure 3 A schematic diagram of the structure of the gasbag in the inflated state in the reactor cleaning device provided in this embodiment of the utility model;
[0029] Figure 4 for Figure 3 Sectional view at point BB;
[0030] Figure 5 for Figure 2 Sectional view at CC;
[0031] Figure 6 for Figure 4 Sectional view at point DD;
[0032] Figure 7 This is a schematic diagram of the outer cylinder provided in an embodiment of the present utility model;
[0033] Figure 8This is a schematic diagram of the installation of the stirring rod provided in an embodiment of the present invention.
[0034] Figure label:
[0035] 100. Kettle body; 110. Driving component;
[0036] 200. Reactor cleaning device;
[0037] 210. Inner cylinder;
[0038] 220. Outer cylinder; 221. Opening;
[0039] 230. Sealing plate;
[0040] 240. Airbag; 241. Fold;
[0041] 250. Guide component; 251. Telescopic rod; 252. Spring;
[0042] 260. Stirring rod. Detailed Implementation
[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.
[0045] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0046] In this application, unless otherwise expressly 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0048] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0049] like Figure 1 As shown, this embodiment provides a reaction vessel for completing processes such as sulfidation, nitration, hydrogenation, hydrocarbonation, polymerization, and condensation. The reaction vessel includes a vessel body 100, which is used to contain reactants and carry out chemical reactions.
[0050] To ensure uniform mixing of the reactants and accelerate the reaction rate, the reactor also includes a stirring shaft, which is rotatably connected to the reactor body.
[0051] After use, reactors are prone to scaling on their inner walls. For example, in the hydrometallurgical process for laterite nickel ore, ore slurry, sulfuric acid, and steam are typically injected into a high-pressure reactor for smelting to extract nickel and cobalt from the ore. After operation, the inner wall of the high-pressure reactor will form scale-like precipitates mainly composed of iron and aluminum hydrolysis. When the scale accumulation is significant, cleaning is necessary. Currently, cleaning requires a large amount of descaling agent, resulting in high production costs.
[0052] To solve the above problems, such as Figure 1-4 As shown, the reactor provided in this application also includes a reactor cleaning device 200, which is installed in the reactor body 100. The reactor cleaning device 200 includes an inner cylinder 210, an outer cylinder 220, multiple sealing plates 230, and multiple airbags 240. The inner cylinder 210 is rotatably disposed in the reactor body 100 and is connected to an external air source. The outer cylinder 220 is sleeved outside the inner cylinder 210 and fixedly connected to the inner cylinder 210. Multiple openings 221 are evenly arranged along its circumference on the outer wall of the outer cylinder 220. The multiple sealing plates 230 correspond one-to-one with the multiple openings 221 and are located outside the outer cylinder 220. The multiple airbags 240 correspond one-to-one with the multiple sealing plates 230. One side of the airbag 240 is connected to the sealing plate 230. The airbag 240 is fixedly connected to the outer wall of the inner cylinder 210 on the other side and is connected to the inner cylinder 210. The airbag 240 can contract or expand to move the sealing plate 230 relative to the corresponding opening 221 and move to the position of opening or closing the opening 221. When the airbag 240 is in a contracted state, the airbag 240 contracts toward the gap between the inner cylinder 210 and the outer cylinder 220, and the corresponding sealing plate 230 moves along the direction close to the opening 221 until the opening 221 is closed. When the airbag 240 is in an expanded state, the airbag 240 expands toward the outside of the outer cylinder 220, and the corresponding sealing plate 230 moves along the direction away from the opening 221 until it gradually occupies the internal cavity of the vessel body 100.
[0053] In practice, the reactor cleaning device 200 replaces the stirring shaft of the reactor. When the reactor is in operation or shutdown, the air bladder 240 is in a contracted state, contracting towards the gap between the inner cylinder 210 and the outer cylinder 220, and the corresponding sealing plate 230 moves towards the opening 221 until the opening 221 is closed. At this time, the reactor cleaning device 200 does not occupy the internal space of the reactor body 100. When it is necessary to clean the scale on the inner wall of the reactor body 100, the air bladder 240 is in an inflated state, expanding towards the outside of the outer cylinder 220, and the corresponding sealing plate 230 moves away from the opening 221 until it gradually occupies the internal cavity of the reactor body 100. At this time, most of the internal cavity of the reactor body 100 is occupied by the air bladder 240, effectively reducing the actual internal space of the reactor body 100. During cleaning, only a small amount of descaling agent needs to be poured in, reducing costs.
[0054] In this embodiment, an air chamber communicating with the airbag 240 is formed inside the inner cylinder 210, the bottom of the inner cylinder 210 is rotatably connected to the cross support rod provided inside the vessel body 100, and the top of the inner cylinder 210 extends to the outside of the vessel body 100 and is rotatably and sealingly connected to the top of the vessel body 100.
[0055] In one embodiment, the top end of the inner cylinder 210 extends outside the vessel body 100 and is connected to the output end of the drive unit 110 of the vessel body 100. The drive unit 110 drives the inner cylinder 210 to rotate, thereby causing the reactor cleaning device 200 to rotate in place of the stirring shaft. The drive unit 110 includes a motor and a reducer, with the motor connected to the inner cylinder 210 via the reducer. In this case, there is no need to install a stirring shaft inside the vessel body 100; the inner cylinder 210 can replace the stirring shaft, thus simplifying the structure of the reactor.
[0056] To control the contraction and expansion of the airbag 240, in one embodiment, the part of the inner cylinder 210 located outside the vessel body 100 is equipped with an air nozzle. The air nozzle is normally closed. When the air source is connected to the air nozzle, air can be supplied to the air chamber of the inner cylinder 210, and the airbag 240 expands. Of course, a suction device can also be used to connect to the air nozzle to make the airbag 240 contract.
[0057] It is understood that air or water can be injected into the airbag 240, and the filling medium can cause the airbag 240 to contract and expand to achieve the purpose of this application.
[0058] like Figure 8 As shown, to improve stirring efficiency, multiple stirring rods 260 are fixedly connected to the outer wall of the outer cylinder 220. It is understood that the shape and setting angle of the stirring rods 260 are not limited, as long as they do not interfere with the sealing plate 230 and the air bag 240.
[0059] Optionally, the outer cylinder 220 is fitted over the inner cylinder 210, and a gap is formed between the outer cylinder 220 and the inner cylinder 210 to accommodate the airbag 240 in its contracted state, until the sealing plate 230 is tightly attached to the outer cylinder 220 to close the opening 221. At this time, the sealing plate 230 and the outer cylinder 220 form a structure that wraps the airbag 240, preventing the liquid in the reactor body 100 from entering the inner cylinder 210 when the reactor is working normally.
[0060] It is understandable that during the switching between the inflated and deflated states of the airbag 240, liquid will inevitably enter the inner cylinder 210. Therefore, a drain port can be provided at the bottom of the outer cylinder 220. Of course, even if liquid enters the inner cylinder 210, it will not affect the implementation of the scheme in this application.
[0061] like Figure 7As shown, in one embodiment, the opening 221 is a frame shape extending in the vertical direction, and the airbag 240 is a long strip structure extending in the vertical direction.
[0062] In another embodiment, multiple openings 221 can be provided, and the multiple openings 221 are arranged sequentially in the vertical direction. Similarly, the number of sealing plates 230 and airbags 240 should be set accordingly.
[0063] In this embodiment, multiple sealing plates 230 correspond one-to-one with multiple openings 221 and are located outside the outer cylinder 220. The sealing plates 230 move relative to the corresponding openings 221 and move to the position where the openings 221 are opened or closed.
[0064] The sealing plate 230 is an arc-shaped plate, and a sealing ring is provided on the side near the outer cylinder 220. By setting the sealing ring, the sealing performance between the sealing plate 230 and the outer cylinder 220 is improved. By setting the sealing plate 230 as an arc-shaped plate, the sealing plate 230 can better fit with the inner wall of the vessel body 100, thereby improving the cleaning effect.
[0065] In this embodiment, multiple airbags 240 correspond one-to-one with multiple sealing plates 230. One side of the airbag 240 is fixedly connected to the sealing plate 230, and the other side of the airbag 240 is fixedly connected to the outer wall of the inner cylinder 210 and is connected to the inner cylinder 210.
[0066] Meanwhile, the airbag 240 has a contracted state and an expanded state. When the airbag 240 is in the contracted state, the airbag 240 contracts toward the gap between the inner cylinder 210 and the outer cylinder 220, and the corresponding sealing plate 230 moves toward the opening 221 until the opening 221 is closed. When the airbag 240 is in the expanded state, the airbag 240 expands toward the outside of the outer cylinder 220, and the corresponding sealing plate 230 moves away from the opening 221 until it gradually occupies the internal cavity of the vessel body 100.
[0067] To increase the distance by which the airbag 240 extends outward from the outer cylinder 220 and thus occupy more space inside the vessel body 100, in one embodiment, when the airbag 240 is in a contracted state, a pleated portion 241 is formed on the portion of the airbag 240 near the sealing plate 230. When the airbag 240 switches from a contracted state to an inflated state, the pleated portion 241 is gradually flattened.
[0068] In one embodiment, the airbag 240 has connection ports on both sides. One connection port of the airbag 240 is connected to the corresponding sealing plate 230, and the other connection port of the airbag 240 is connected to the outer wall of the inner cylinder 210. A sealed cavity is formed between the airbag 240, the sealing plate 230 and the inner cylinder 210. An air hole is formed at the connection port of the outer cylinder 220 directly opposite to it, which connects its interior and the sealed cavity.
[0069] By providing the connection port of the airbag 240, a guide 250 can be provided in the sealed cavity to limit the sliding direction of the sealing plate 230. In one embodiment, the reactor cleaning device 200 further includes a plurality of guides 250 respectively provided in a plurality of sealed cavities. The guides 250 connect the inner cylinder 210 and the sealing plate 230 to limit the movement of the sealing plate 230 in a direction perpendicular to the opening 221.
[0070] like Figure 5-6 As shown, in one embodiment, the guide member 250 includes two telescopic rods 251 and a spring 252. One end of the two telescopic rods 251 is hinged to the sealing plate 230, and the other end of the two telescopic rods 251 is slidably hinged to the inner cylinder 210 in the vertical direction. The two telescopic rods 251 are arranged sequentially in the vertical direction, and the distance between them gradually increases in the direction away from the sealing plate 230. The two ends of the spring 252 are fixedly connected to the two telescopic rods 251 respectively, and the spring 252 is always in a tensioned state.
[0071] Since the elastic deformation of spring 252 is limited, each sealed cavity has multiple guide members 250, which are arranged sequentially in the vertical direction to reduce the deformation of a single spring 252.
[0072] To improve the descaling effect, in one embodiment, a brush layer is provided on the side of the sealing plate 230 away from the airbag 240. When the sealing plate 230 moves to the limit distance in the direction away from the airbag 240, the brush layer abuts against the inner wall of the vessel body 100.
[0073] Note that in the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0074] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. A reactor cleaning device, characterized in that, Installed in the vessel body (100), the reactor cleaning device includes: The inner cylinder (210) is rotatably disposed in the vessel body (100), and the inner cylinder (210) is connected to an external gas source; An outer cylinder (220) is fitted over the inner cylinder (210) and fixedly connected to the inner cylinder (210). The outer wall of the outer cylinder (220) has a plurality of openings (221) evenly arranged along its circumference. Multiple sealing plates (230) and multiple airbags (240) are provided. The sealing plates (230) correspond one-to-one with the openings (221) and are located outside the outer cylinder (220). The airbags (240) correspond one-to-one with the sealing plates (230). One side of the airbag (240) is fixedly connected to the sealing plate (230), and the other side of the airbag (240) is fixedly connected to the outer wall of the inner cylinder (210) and communicates with the inner cylinder (210). The airbags (240) can expand or contract to move the sealing plates (230) relative to the corresponding openings (221) and move to the position where the openings (221) are opened or closed.
2. The reactor cleaning device according to claim 1, characterized in that, The opening (221) is a frame shape extending vertically, and the airbag (240) is a long strip structure extending vertically.
3. The reactor cleaning device according to claim 1, characterized in that, When the airbag (240) is in a contracted state, the portion of the airbag (240) near the sealing plate (230) forms a pleated portion (241).
4. The reactor cleaning device according to claim 1, characterized in that, The airbag (240) has connection ports on both sides. One of the connection ports of the airbag (240) is connected to the corresponding sealing plate (230), and the other connection port of the airbag (240) is connected to the outer wall of the inner cylinder (210). A sealed cavity is formed between the airbag (240), the sealing plate (230), and the inner cylinder (210). An air hole is formed at the connection port directly opposite the outer cylinder (220) to connect its interior and the sealed cavity.
5. The reactor cleaning device according to claim 4, characterized in that, It also includes a plurality of guide members (250) respectively disposed in a plurality of the sealed cavities, the guide members (250) connecting the inner cylinder (210) and the sealing plate (230) to limit the movement of the sealing plate (230) in a direction perpendicular to the opening (221).
6. The reactor cleaning device according to claim 5, characterized in that, The guide (250) includes: Two telescopic rods (251) and a spring (252) are provided. One end of each of the two telescopic rods (251) is hinged to the sealing plate (230), and the other end of each of the two telescopic rods (251) is slidably hinged to the inner cylinder (210) in the vertical direction. The two telescopic rods (251) are arranged sequentially in the vertical direction, and the distance between them gradually increases in the direction away from the sealing plate (230). The two ends of the spring (252) are fixedly connected to the two telescopic rods (251) respectively, and the spring (252) is always in a tensioned state.
7. The reactor cleaning device according to claim 6, characterized in that, Each of the sealed cavities has a plurality of guides (250), and the plurality of guides (250) are arranged sequentially in a vertical direction.
8. The reactor cleaning device according to any one of claims 1-7, characterized in that, The sealing plate (230) is an arc-shaped plate, and a sealing ring is provided on the side of the sealing plate (230) near the outer cylinder (220).
9. The reactor cleaning device according to any one of claims 1-7, characterized in that, The top of the inner cylinder (210) extends to the outside of the vessel body (100) and is connected to the output end of the drive unit (110) of the vessel body (100). The drive unit (110) drives the inner cylinder (210) to rotate so that the reactor cleaning device (200) rotates to replace the stirring shaft of the vessel body (100).
10. A reaction vessel, comprising a vessel body (100), characterized in that, The reactor further includes a reactor cleaning device as described in any one of claims 1-9, the reactor cleaning device being installed in the reactor body (100).