Demisting device and reaction kettle

Abstract

The utility model relates to the technical field of chemical equipment, and discloses a demisting device and a reaction kettle, the demisting device is used for being installed at a manhole of the reaction kettle, the two ends of a connecting rod are fixedly and rotatably connected with a fan and a connector respectively, and the fan can be conveniently and timely adjusted in position and angle to be installed corresponding to the manhole; the connector is used for being detachably connected with the frame of the manhole, so that mounting, dismounting and repeated use are convenient, the application range of the demisting device is expanded, and the applicability is improved. The demisting device is simple in structure and convenient to quickly mount; according to the reaction kettle applying the demisting device, the manholes are formed in the top and the bottom of the kettle body, and the demisting device is arranged at one or more manholes, so that water mist in the reaction kettle can be pumped out after descaling is completed, the temperature and the humidity in the reaction kettle are rapidly reduced, and the concentration of the water mist is rapidly reduced to the level where a worker can enter; and the descaling operation time is greatly shortened, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a demisting device and a reaction vessel. Background Technology

[0002] With the booming development of the new energy vehicle industry, the industry's demand for nickel, cobalt and manganese metals in new energy ternary materials is increasing day by day. Developing laterite nickel mines with large reserves but low nickel industrial grade has gradually become the focus of the industry.

[0003] Currently, in the hydrometallurgical process for laterite nickel 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 a scale-like precipitate mainly composed of iron and aluminum, which needs to be cleaned when the scale accumulation is significant.

[0004] Current descaling methods involve spraying a descaling agent followed by high-pressure water rinsing. The high-pressure water impacts the inner wall of the reactor, creating numerous small droplets that fill the interior with water mist. Because the high-pressure water mist has a heating effect, it easily creates a high-temperature, high-humidity environment inside the reactor. Furthermore, the water mist obstructs visibility and affects the breathing of workers. Therefore, after descaling, workers must wait for the water mist to settle and dissipate before entering the reactor to inspect and evaluate the descaling effect and disassemble the equipment. The lengthy waiting time for the water mist to dissipate results in excessively long total descaling time, severely impacting work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a demisting device and a reaction vessel, which has a simple structure, strong adaptability, is easy to install quickly, and can rapidly remove water mist, thereby improving work efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A demisting device is used to install at the manhole of a reactor. The demisting device includes a fan and multiple connecting arms. Each connecting arm includes a connecting rod and a connecting head. One end of the connecting rod is fixedly and rotatably connected to the fan, and the other end of the connecting rod is fixedly and rotatably connected to the connecting head. The connecting head is used to detachably connect to the frame of the manhole.

[0008] As an optional technical solution for the defogging device, the connector includes a fixed plate, a movable plate, and a locking member. The fixed plate is rotatably connected to the connecting rod in a fixed manner. The movable plate is spaced apart from the fixed plate and movably connected. The fixed plate and the movable plate can change their relative distance through the locking member so that the fixed plate and the movable plate can selectively clamp the frame of the manhole.

[0009] As an optional technical solution for the defogging device, the fixed plate has a threaded hole, and the movable plate has a through hole. The through hole and the threaded hole are coaxially arranged. One end of the locking member is a threaded segment, and the other end of the locking member is a limiting segment. The limiting segment abuts against the movable plate. The threaded segment passes through the through hole and the threaded hole in sequence, and the threaded segment is screwed to the threaded hole to change the relative interval between the fixed plate and the movable plate.

[0010] As an optional technical solution for the defogging device, the defogging device also includes a duct and an absorber. One end of the duct is connected to the manhole corresponding to the fan, and the other end of the duct is connected to the absorber, which is used to absorb water mist.

[0011] As an optional technical solution for the defogging device, a connecting ring is provided on the connecting rod, and one end of the air duct is hooked on the connecting ring.

[0012] As an optional technical solution for the defogging device, the absorber includes a housing and absorbent cotton. The housing has an air inlet and multiple air outlets. The air duct is connected to the air inlet. The absorbent cotton is built into the housing and contains an alkaline solution.

[0013] As an optional technical solution for the demisting device, the absorber includes a water washing tank and an aeration disc. The aeration disc is located at the bottom of the water washing tank and is connected to the air duct. The water washing tank contains an alkaline solution.

[0014] As an optional technical solution for the demisting device, the alkaline solution is a sodium hydroxide solution or a sodium carbonate solution.

[0015] As an optional technical solution for the defogging device, the fan is an axial flow fan, and multiple connecting rods are arranged around the axial flow fan at intervals.

[0016] A reaction vessel includes a vessel body and a demister as described in any of the above, wherein a plurality of manholes are provided at the top and bottom of the vessel body, and the demister is provided at one or more of the manholes.

[0017] The beneficial effects of this utility model are:

[0018] The demisting device provided by this utility model includes a fan and multiple connecting arms for installation at the manhole of a reaction vessel. Each connecting arm includes a connecting rod and a connector. The two ends of the connecting rod are fixedly and rotatably connected to the fan and the connector, respectively, allowing for convenient and timely adjustment of the fan's position and angle to align with the manhole installation. The connector is detachably connected to the frame of the manhole, facilitating installation, disassembly, and reuse, thus expanding the application range and improving the applicability of the demisting device. This demisting device has a simple structure, is easy to install quickly, and can rapidly remove water mist, improving operational efficiency.

[0019] The reaction vessel provided by this utility model includes a vessel body and the aforementioned demisting device. Several manholes are provided at the top and bottom of the vessel body, and a demisting device is installed at one or more manholes. After descaling is completed, the water mist inside the reaction vessel can be extracted, rapidly reducing the temperature and humidity inside the reaction vessel, so that the water mist concentration can be quickly reduced to a level that allows personnel to enter, and significantly shortening the time of descaling operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation structure of the reaction vessel provided in a specific embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the defogging device provided in a specific embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of the connector of the demisting device provided in a specific embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the absorber of the demisting device provided in a specific embodiment of this utility model.

[0024] In the picture:

[0025] 100. Reactor; 1. Blower; 2. Connecting arm; 21. Connecting rod; 211. Connecting ring; 22. Connector head; 221. Fixing plate; 222. Movable plate; 223. Locking device; 3. Air duct; 4. Absorber; 41. Washing tank; 42. Aeration disc. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] like Figure 1 and Figure 2 As shown, this utility model discloses a demisting device that can be applied to the descaling operation of a reactor 100. It is installed at the manhole of the reactor 100 to quickly remove water mist inside the reactor 100. The demisting device includes a fan 1 and multiple connecting arms 2. Each connecting arm 2 includes a connecting rod 21 and a connecting head 22. One end of the connecting rod 21 is fixedly and rotatably connected to the fan 1, and the other end is fixedly and rotatably connected to the connecting head 22. This allows for easy adjustment of the fan 1's position and angle to accommodate the manhole installation. The connecting head 22 is detachably connected to the frame of the manhole. By rotating the connecting rod 21 and the connecting head 22, it can adapt to manholes of different shapes and sizes, thus smoothly installing the demisting device on different manholes. This facilitates installation, disassembly, and reuse, expanding the application range and improving the applicability of the demisting device. The demisting device has a simple structure, is easy to install quickly, and can rapidly remove water mist, improving operational efficiency. Furthermore, after being rotated to the appropriate angle, the connecting rod 21 and the fan 1, as well as the connecting rod 21 and the connector 22, can be locked to achieve a fixed effect. This can be achieved by tightening bolts or other methods.

[0031] It should be noted that the demisting device in this utility model is used in, but not limited to, the reactor 100, and can also be applied to other equipment that requires the removal of water mist. In this embodiment, only the high-pressure reactor used in the hydrometallurgical smelting of laterite nickel ore is used as an example for explanation. The principle of its application in other equipment is essentially the same as that of its application in this equipment, and will not be described in detail here.

[0032] This utility model also discloses a reaction vessel 100, including a vessel body and the aforementioned demisting device. Several manholes are provided at the top and bottom of the vessel body, and demisting devices can be installed at one or more manholes. Since the reaction vessel 100 generally has multiple manholes, demisting devices can be installed at some manholes, while others are left open to create air convection, further facilitating the rapid discharge of water mist. Alternatively, demisting devices can be installed at each manhole, but some fans 1 should exhaust air outwards, while the remaining fans 1 should blow air inwards, which can also create air convection and facilitate the rapid discharge of water mist. Compared with existing technologies, this arrangement allows water mist to be extracted from the reaction vessel 100 after descaling, rapidly reducing the temperature and humidity inside the reaction vessel 100, quickly lowering the water mist concentration to a level that allows personnel to enter, and significantly shortening the descaling operation time.

[0033] In one embodiment, the fan 1 is specifically an axial flow fan 1. The arrangement of the axial flow fan 1 corresponds to the opening direction of the manhole, and multiple connecting rods 21 are arranged at intervals around the axial flow fan 1 to make the demisting device more stable. For example, the specifications of the fan 1 should be selected according to the size of the manhole, and the installation position of the fan 1 is preferably such that it just covers the manhole.

[0034] Please see Figure 3 In some embodiments, the connector 22 includes a fixed plate 221, a movable plate 222, and a locking member 223. The fixed plate 221 is fixedly rotatably connected to the connecting rod 21. The movable plate 222 is spaced apart from and movably connected to the fixed plate 221. The locking member 223 can change the relative distance between the fixed plate 221 and the movable plate 222 so that the fixed plate 221 and the movable plate 222 can selectively clamp the frame of the manhole. In other embodiments, other fixing methods may be used, such as spring clamps.

[0035] In one embodiment, the fixed plate 221 has a threaded hole, and the movable plate 222 has a through hole. The through hole and the threaded hole are coaxially arranged. One end of the locking member 223 is a threaded section, and the other end of the locking member 223 is a limiting section. The limiting section abuts against the movable plate 222. The threaded section passes through the through hole and the threaded hole in sequence, and the threaded section is screwed into the threaded hole to change the relative distance between the fixed plate 221 and the movable plate 222. Exemplarily, the locking member 223 is a bolt. By turning the bolt, the movable plate 222 can be moved to cooperate with the fixed plate 221 to clamp the frame of the manhole.

[0036] Optionally, the demisting device is installed directly on the manhole at the top of the vessel, which draws the water mist inside the reactor 100 outward from the top, allowing the water mist to be diluted and dispersed into the air more quickly by the air above.

[0037] In some embodiments, the reactor 100 is a high-pressure reactor, and it requires the use of concentrated sulfuric acid and mineral slurry for reaction. During cleaning and descaling, a small amount of sulfuric acid may remain in the reactor 100, which will form acidic water mist under the impact of high-pressure water. Although it is simple to directly discharge the acidic water mist into the atmosphere, it may cause environmental pollution. Therefore, the demisting device can also be equipped with a duct 3 and an absorber 4. One end of the duct 3 is connected to a manhole corresponding to the fan 1, and the other end of the duct 3 is connected to the absorber 4. The water mist drawn out by the fan 1 enters the absorber 4 through the duct 3, and the absorber 4 is used to absorb the water mist. This can further treat the drawn mist and protect the environment.

[0038] Specifically, a connecting ring 211 is provided on the connecting rod 21, and one end of the duct 3 is hooked onto the connecting ring 211, allowing for quick assembly and disassembly of the duct 3 and the connecting rod 21. For example, the duct 3 can be made of a flexible material to change the direction of the channel within the duct 3. The strength of the duct 3 only needs to ensure that the channel does not collapse and become blocked. This arrangement can reasonably save space according to actual conditions, avoiding limitations on the length of the duct 3 and the placement of the absorber 4.

[0039] In one embodiment, the absorber 4 includes a housing and absorbent cotton. The housing has an air inlet and multiple air outlets. The air duct 3 connects to the air inlet. The absorbent cotton is housed within the housing and contains an alkaline solution. The alkaline solution can quickly absorb and neutralize the sulfuric acid in the water mist. The alkaline solution can be a sodium hydroxide solution or a sodium carbonate solution.

[0040] Please see Figure 4 In other embodiments, the absorber 4 includes a water washing tank 41 and an aeration disc 42. The aeration disc 42 is located at the bottom of the water washing tank 41 and is connected to the air duct 3. The water washing tank 41 contains an alkaline solution, which can absorb the water mist and the sulfuric acid in it through alkaline washing.

[0041] In the above embodiments, since the water mist is absorbed instead of being directly discharged into the atmosphere, the demisting device can also be installed at the manhole at the bottom of the reactor body 100, which can greatly reduce the installation difficulty.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A demister, for installation at the manhole of a reactor, characterized in that, The defogging device includes a fan (1) and multiple connecting arms (2). Each connecting arm (2) includes a connecting rod (21) and a connector (22). One end of the connecting rod (21) is fixedly and rotatably connected to the fan (1), and the other end of the connecting rod (21) is fixedly and rotatably connected to the connector (22). The connector (22) is used to detachably connect to the frame of the manhole.

2. The demisting device according to claim 1, characterized in that, The connector (22) includes a fixed plate (221), a movable plate (222), and a locking member (223). The fixed plate (221) is rotatably connected to the connecting rod (21). The movable plate (222) is spaced apart from the fixed plate (221) and movably connected. The fixed plate (221) and the movable plate (222) can change their relative spacing through the locking member (223) so that the fixed plate (221) and the movable plate (222) can selectively clamp the frame of the manhole.

3. The demisting device according to claim 2, characterized in that, The fixed plate (221) has a threaded hole, and the movable plate (222) has a through hole. The through hole and the threaded hole are coaxially arranged. One end of the locking member (223) is a threaded section, and the other end of the locking member (223) is a limiting section. The limiting section abuts against the movable plate (222). The threaded section passes through the through hole and the threaded hole in sequence, and the threaded section is screwed to the threaded hole to change the relative interval between the fixed plate (221) and the movable plate (222).

4. The demisting device according to claim 1, characterized in that, The defogging device also includes a duct (3) and an absorber (4). One end of the duct (3) is connected to the manhole corresponding to the fan (1), and the other end of the duct (3) is connected to the absorber (4). The absorber (4) is used to absorb water mist.

5. The demisting device according to claim 4, characterized in that, A connecting ring (211) is provided on the connecting rod (21), and one end of the air duct (3) is hooked on the connecting ring (211).

6. The demisting device according to claim 4, characterized in that, The absorber (4) includes a housing and absorbent cotton. The housing has an air inlet and multiple air outlets. The air duct (3) is connected to the air inlet. The absorbent cotton is built into the housing and contains alkali solution.

7. The demisting device according to claim 4, characterized in that, The absorber (4) includes a washing tank (41) and an aeration plate (42). The aeration plate (42) is located at the bottom of the washing tank (41) and is connected to the air duct (3). The washing tank (41) contains an alkaline solution.

8. The demisting device according to any one of claims 6 or 7, characterized in that, The alkaline solution is a sodium hydroxide solution or a sodium carbonate solution.

9. The demisting device according to claim 1, characterized in that, The fan (1) is an axial flow fan (1), and a plurality of the connecting rods (21) are arranged around the axial flow fan (1) at intervals.

10. A reaction vessel, characterized in that, The vessel includes a vessel body and a demisting device as described in any one of claims 1-9, wherein the top and bottom of the vessel body are provided with a plurality of manholes, and the demisting device is provided at one or more of the manholes.

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