Catalyst carrier device based on benzyl chloride directional chlorination

Abstract

The utility model discloses a catalyst carrier device based on benzyl chloride directional chlorination, which relates to the field of organic synthesis catalysis equipment, and adopts the technical scheme that the catalyst carrier device comprises a container cover arranged above a reaction container and a vertical rod positioned below the container cover, and the bottom end of the vertical rod is detachably connected with a metal net groove seat; the metal net groove seat is composed of a frame made of a corrosion-resistant metal material and a metal net arranged in the frame, a catalyst carrier is placed through the metal net groove, and the container cover is driven by the lifting mechanism so as to move up and down relative to the reaction container. The bearing function of the catalyst carrier and the opening and closing function of the reaction container are integrated in the up-down moving process of the container cover, the problems that in the prior art, a reactor needs to be detached for carrier replacement, and operation is tedious are effectively solved, convenient installation, replacement and in-place adjustment of the catalyst carrier are achieved, and the practicability and production efficiency of the reaction device are improved.

Description

Technical Field

[0001] This utility model relates to the field of synthetic catalytic equipment, and more specifically, it relates to a catalyst support device based on the directional chlorination of benzyl chloride. Background Technology

[0002] In the field of organic synthesis, the directed chlorination reaction of benzyl chloride is a key process for preparing fine chemical products such as pharmaceuticals and pesticides. The performance of its core catalyst support device directly affects the reaction efficiency and product quality.

[0003] However, existing catalyst support devices generally suffer from the significant problem of inconvenient catalyst support replacement in practical applications. Traditional devices often employ a fixed structure, with the catalyst support typically directly filled or fixed inside the reaction vessel. For example, in a fixed-bed reactor, the catalyst support is often densely packed in granular or block form at the bottom of the reactor, forming a fixed connection with the inner wall and supporting structure of the reaction vessel. When the support needs to be replaced, the reactor must be shut down and the entire reactor disassembled. The old support must be manually cleaned layer by layer and refilled with new support. This process is not only time-consuming and labor-intensive but also prone to damaging and wasting the catalyst support, while also occupying a large amount of production time, seriously affecting the efficiency of industrial production. In addition, although some devices are equipped with a support structure, the connection between the support components and the reactor is complex, such as using welding or bolt fastening, which are structures that cannot be quickly disassembled. This results in the need for cumbersome operations with specialized tools when replacing the support, and may even cause a decrease in the reactor's sealing performance due to repeated disassembly, introducing impurities that affect the stability of the reaction. More importantly, in existing devices, the container lid and the reaction vessel are mostly fixed or semi-fixed, lacking an independently driven lifting mechanism. This makes it impossible to easily pick up and put down the supporting structure by moving the container lid up and down, which means that the catalyst carrier replacement process must be carried out with the reactor fully open, further increasing the difficulty and risk of replacement.

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a catalyst support device based on the directional chlorination of benzyl chloride. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a catalyst support device based on the directional chlorination of benzyl chloride.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a catalyst support device based on the directional chlorination of benzyl chloride, comprising a container cover placed above the benzyl chloride directional chlorination reaction vessel, and a vertical rod located below the container cover. The bottom end of the vertical rod is detachably connected to a metal mesh trough seat. The metal mesh trough seat is composed of a frame made of corrosion-resistant metal material and a metal mesh set within the frame. The catalyst support is placed through the metal mesh trough. The container cover is driven by a lifting mechanism, thereby moving up and down relative to the reaction vessel.

[0007] Preferably, a connecting plate is fixedly connected to the bottom end of the vertical rod, and a through hole A is provided on the connecting plate. A screw is fixedly connected to the top end of the metal mesh groove seat, and a nut is threaded onto the outer side wall of the screw.

[0008] Preferably, the bottom plate of the metal mesh channel seat can be flipped, and when the bottom plate is close to the bottom end of the metal mesh channel seat, it is fixed by a buckle, and a top cover is installed on the top of the metal mesh channel seat.

[0009] Preferably, the lifting mechanism includes a mounting plate, with guide rails fixedly connected to both sides of the top of the mounting plate and a top plate fixedly connected to the top of the guide rails. A motor is mounted on the top plate to drive a lead screw located between the guide rails to rotate. A rod sleeve is threadedly connected to the outer wall of the lead screw. Both sides of the rod sleeve are slidably connected to the guide rails via sliders. The rod sleeve is connected to the container lid via a connecting plate.

[0010] Preferably, a rotating rod is fixedly connected to the bottom end of the lead screw, and the rotating rod is rotatably connected to the mounting plate through a bearing.

[0011] Preferably, the length of the vertical rod is adjustable.

[0012] Preferably, the vertical rod includes an outer rod connected to the container lid, and an inner rod is slidably connected inside the outer rod. The surface of the inner rod has multiple screw holes arranged in a vertical array, and a through hole B is provided on the lower part of the outer side wall of the outer rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model utilizes a lifting mechanism and a detachable metal mesh trough structure to integrate the catalyst carrier bearing and the opening and closing function of the reaction vessel into the up and down movement of the container lid. This effectively solves the problems of disassembling the reactor and cumbersome operation required for carrier replacement in the prior art, and realizes convenient installation, replacement and in-situ adjustment of the catalyst carrier, thereby improving the practicality and production efficiency of the benzyl chloride directional chlorination reaction device.

[0015] 2. When the porous ceramic catalyst carrier needs to be replaced, this utility model only requires opening the buckle and flipping the bottom plate downwards to pour the catalyst carrier directly out from the bottom of the metal mesh tray. Opening the top cover also allows for the direct addition of a new catalyst carrier into the metal mesh tray, making the replacement of the catalyst carrier more convenient.

[0016] 3. By adjusting the length of the vertical rod, this utility model can precisely control the vertical position of the metal mesh trough seat and catalyst carrier in the reaction vessel, so that it can adapt to the reaction needs of reaction vessels of different heights or different areas in the same vessel. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the specific structure of the side of this utility model;

[0020] Figure 3 This utility model Figure 1 Enlarged view of the local structure of A;

[0021] Figure 4 This utility model Figure 1 Enlarged view of the local structure of B;

[0022] Figure 5 This utility model Figure 2 Enlarged view of the local structure of C.

[0023] In the diagram: 1. Container lid; 2. Vertical rod; 201. Outer rod; 202. Inner rod; 203. Screw hole; 204. Through hole B; 3. Metal mesh channel seat; 301. Base plate; 302. Buckle; 4. Lifting mechanism; 401. Mounting plate; 402. Guide rail; 403. Top plate; 404. Lead screw; 405. Motor; 406. Rod sleeve; 407. Slider; 408. Rotating rod; 409. Bearing; 410. Connecting plate; 5. Connecting disc; 6. Screw; 7. Nut; 8. Through hole A; 9. Top cover. Detailed Implementation

[0024] like Figure 1-5As shown, this utility model provides a catalyst support device based on benzyl chloride directional chlorination, including a container cover 1 placed above the benzyl chloride directional chlorination reaction vessel, and a vertical rod 2 located below the container cover 1. The bottom end of the vertical rod 2 is detachably connected to a metal mesh trough 3. The metal mesh trough 3 is composed of a frame made of corrosion-resistant metal material and a metal mesh set in the frame. The catalyst support is placed through the metal mesh trough. The container cover 1 is driven by a lifting mechanism 4, thereby moving up and down relative to the reaction vessel.

[0025] The lifting mechanism 4 drives the container cover 1 to move up and down relative to the reaction vessel, enabling convenient loading, unloading, and position adjustment of the metal mesh tray 3 and the catalyst carrier. Specifically, when it is necessary to install or replace the catalyst carrier, the lifting mechanism 4 drives the container cover 1 to rise, causing the metal mesh tray 3 connected to the bottom of the vertical rod 2 to rise synchronously with the container cover 1 until it is exposed above the reaction vessel. At this time, the metal mesh tray 3 can be directly disassembled (using the detachable connection structure between the vertical rod 2 and the metal mesh tray 3), the old catalyst carrier can be taken out of the metal mesh tray, and a new catalyst carrier can be installed. Then, the metal mesh tray 3 is reinstalled at the bottom of the vertical rod 2. After the carrier replacement is completed, the lifting mechanism 4 drives the container cover 1 to fall, so that the metal mesh tray 3 and the catalyst carrier are accurately reset to the preset position inside the reaction vessel, and the container cover 1 and the reaction vessel are closed to form a sealed space. During the reaction, the corrosion-resistant metal frame and metal mesh structure of the metal mesh holder 3 stably support the porous ceramic catalyst carrier. The pores of the metal mesh allow benzyl chloride reactants and other reactants to pass through uniformly, ensuring full contact with the metal chloride catalyst loaded on the carrier surface, thus achieving a directional chlorination reaction. When maintenance or carrier replacement is required, there is no need to disassemble the entire reaction vessel. Simply adjust the height of the container cover 1 using the lifting mechanism 4 and remove the metal mesh holder 3 (it can be replaced along with the metal mesh holder 3, as the metal mesh holder is prone to clogging; if there is no clogging, only the catalyst carrier in the metal mesh holder can be replaced). This allows for quick carrier replacement, significantly simplifying the operation process. This invention integrates the catalyst carrier support and the opening and closing function of the reaction vessel into the up-and-down movement of the container cover 1 using the lifting mechanism 4 and the detachable metal mesh holder 3. This effectively solves the problem of disassembling the reactor and cumbersome operation required for carrier replacement in existing technologies, enabling convenient installation, replacement, and in-situ adjustment of the catalyst carrier, thus improving the practicality and production efficiency of the benzyl chloride directional chlorination reaction device.

[0026] Furthermore, the base plate 301 of the metal mesh tray 3 can be flipped. When the base plate 301 is close to the bottom of the metal mesh tray 3, it is fixed by the buckle 302. The top of the metal mesh tray 3 is equipped with a top cover 9. When it is necessary to replace the porous ceramic catalyst carrier (this is for cases where it is not necessary to replace the metal mesh tray 3), simply open the buckle 302, flip the base plate 301 downwards, and the catalyst carrier can be poured out directly from the bottom of the metal mesh tray 3. Opening the top cover 9 can also directly add new catalyst carriers into the metal mesh tray 3, making the replacement operation of the catalyst carrier more convenient.

[0027] Furthermore, the length of the vertical rod 2 can be adjusted. By adjusting the length of the vertical rod 2, the vertical position of the metal mesh tray 3 and the catalyst carrier in the reaction vessel can be precisely controlled, so that it can adapt to the reaction needs of reaction vessels of different heights or different areas in the same vessel. For example, the carrier can be placed in the middle area with a higher reactant concentration or in the position with the best temperature gradient to optimize the contact efficiency between benzyl chloride and the catalyst. The specific structure of the vertical rod 2 is as follows: The vertical rod 2 includes an outer rod 201 connected to the container cover 1, and an inner rod 202 is slidably connected inside the outer rod 201. Multiple screw holes 203 are arranged in a vertical array on the surface of the inner rod 202, and a through hole B204 is opened on the lower part of the outer side wall of the outer rod 201.

[0028] Pull the inner rod 202 up and down, and the inner rod 202 moves in a straight line up and down along the outer rod 201, thereby adjusting the vertical position of the metal mesh trough seat 3 and the catalyst carrier in the reaction vessel. After adjustment, the screw is inserted into the corresponding height screw hole 203 by passing through the through hole B204 on the outer rod 201 and rotating clockwise, thus fixing the outer rod 201 and the inner rod 202, and fixing the adjusted length of the vertical rod 2.

[0029] The following is the specific detachable structure between the metal mesh trough seat 3 and the vertical rod 2: A connecting plate 5 is fixedly connected to the bottom end of the vertical rod 2, and a through hole A8 is opened on the connecting plate 5. A screw 6 is fixedly connected to the top end of the metal mesh trough seat 3, and a nut 7 is threaded onto the outer wall of the screw 6. During installation, the screw 6 on the metal mesh trough seat 3 is passed through the connecting plate 5 at the bottom of the vertical rod 2. After passing through, the nut 7 is rotated clockwise to install the nut 7 on the screw 6. The nut 7 moves downward along the screw 6 and slowly abuts against the surface of the connecting plate 5, thereby fixing the metal mesh trough seat 3 and the vertical rod 2 together. Conversely, the nut 7 is removed, and the screw 6 is pulled out from the through hole A8 on the connecting plate 5, thus completing the disassembly between the metal mesh trough seat 3 and the vertical rod 2.

[0030] The following is the specific structure of the lifting mechanism 4: The lifting mechanism 4 includes a mounting plate 401. Guide rails 402 are fixedly connected to both sides of the top of the mounting plate 401, and a top plate 403 is fixedly connected to the top of the guide rails 402. A motor 405 is installed on the top plate 403 to drive the lead screw 404 located between the guide rails 402 to rotate. A rod sleeve 406 is threadedly connected to the outer wall of the lead screw 404. Both sides of the rod sleeve 406 are slidably connected to the guide rails 402 through sliders 407. The rod sleeve 406 is connected to the container cover 1 through a connecting plate 410. A rotating rod 408 is fixedly connected to the bottom end of the lead screw 404. The rotating rod 408 is rotatably connected to the mounting plate 401 through a bearing 409.

[0031] The lifting mechanism 4 is installed in a suitable position using the mounting plate 401. In use, the motor 405 is rotated clockwise or counterclockwise using the control button. The motor 405 drives the lead screw 404 to rotate clockwise or counterclockwise. The lead screw 404 drives the sleeve 406 to move up and down. The sleeve 406 drives the slider 407 to move up and down. The slider 407 slides up and down along the guide rail 402 to maintain the linear up and down movement of the sleeve 406. The sleeve 406 can then drive the container lid 1 to move up and down through the connecting plate 410, thereby realizing the lifting and lowering of the container lid 1. When the lead screw 404 rotates, it will drive the rotating rod 408 to rotate. The rotating rod 408 drives the inner ring of the bearing 409 to rotate. The inner ring of the bearing 409 rotates along its outer ring, thereby providing rotational support for the rotating rod 408 and the lead screw 404 through the bearing 409, maintaining the stability of the lead screw 404's rotation.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A catalyst support device based on benzyl chloride directional chlorination, comprising a container cover (1) placed above a benzyl chloride directional chlorination reaction vessel, and a vertical rod (2) located below the container cover (1), characterized in that: The bottom end of the vertical rod (2) is detachably connected to a metal mesh trough seat (3). The metal mesh trough seat (3) is composed of a frame made of corrosion-resistant metal material and a metal mesh set in the frame. The catalyst carrier is placed through the metal mesh trough. The container cover (1) is driven by a lifting mechanism (4) so ​​that it moves up and down relative to the reaction container.

2. The catalyst support device based on the directional chlorination of benzyl chloride according to claim 1, characterized in that: The bottom end of the vertical rod (2) is fixedly connected to a connecting plate (5), and a through hole A (8) is provided on the connecting plate (5). The top end of the metal mesh groove seat (3) is fixedly connected to a screw (6), and a nut (7) is threaded onto the outer side wall of the screw (6).

3. The catalyst support device based on the directional chlorination of benzyl chloride according to claim 1, characterized in that: The bottom plate (301) of the metal mesh trough seat (3) can be flipped. When the bottom plate (301) is close to the bottom end of the metal mesh trough seat (3), it is fixed by a buckle (302). The top of the metal mesh trough seat (3) is equipped with a top cover (9).

4. The catalyst support device based on the directional chlorination of benzyl chloride according to claim 1, characterized in that: The lifting mechanism (4) includes a mounting plate (401). The top two sides of the mounting plate (401) are fixedly connected to guide rails (402), and the top of the guide rails (402) is fixedly connected to a top plate (403). The top plate (403) is equipped with a motor (405) that drives the lead screw (404) located between the guide rails (402) to rotate. The outer side wall of the lead screw (404) is threaded with a rod sleeve (406). Both sides of the rod sleeve (406) are slidably connected to the guide rails (402) through sliders (407). The rod sleeve (406) is connected to the container lid (1) through a connecting plate (410).

5. The catalyst support device based on the directional chlorination of benzyl chloride according to claim 4, characterized in that: The bottom end of the lead screw (404) is fixedly connected to a rotating rod (408), and the rotating rod (408) is rotatably connected to the mounting plate (401) through a bearing (409).

6. The catalyst support device based on the directional chlorination of benzyl chloride according to claim 1, characterized in that: The length of the vertical rod (2) can be adjusted.

7. The catalyst support device based on the directional chlorination of benzyl chloride according to claim 6, characterized in that: The vertical rod (2) includes an outer rod (201) connected to the container lid (1), and an inner rod (202) is slidably connected inside the outer rod (201). The surface of the inner rod (202) is arranged with multiple screw holes (203) in a vertical array. A through hole B (204) is opened at the lower part of the outer side wall of the outer rod (201).

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