Reaction kettle for preparing methanol by hydrogenating carbon dioxide

Abstract

The invention relates to a reaction kettle for preparing methanol through hydrogenation of carbon dioxide. The reaction kettle comprises a rack; the barrel is connected with the rack; the cover body covers a barrel opening of the barrel body; the clamping mechanism comprises a protruding block, a fixing block, a first spring and a first sliding rod, one of the protruding block and the fixing block is connected with the outer wall of the barrel body, the other one of the protruding block and the fixing block is connected with the outer wall of the cover body, the fixing block is provided with a groove, the protruding block is connected with the groove in a clamped mode, the fixing block and the protruding block are each provided with a limiting hole, and the first sliding rod is arranged in the two limiting holes in a sliding and penetrating mode. The first spring is arranged between the fixing block and the first sliding rod and has elastic force for driving the first sliding rod to penetrate through the limiting hole. When the cover body and the barrel body need to be separated, the first sliding rod is pulled to extend out of the limiting hole, at the moment, the first sliding rod does not clamp the convex block and the groove any more, after internal parts are maintained, the convex block extends into the groove, the cover body and the barrel body can be detachably separated conveniently, and therefore a technician can maintain the parts in the reaction kettle conveniently.

Description

Technical Field

[0001] The present disclosure relates to the technical field of reactor preparation, and in particular, to a reactor for preparing methanol by hydrogenating carbon dioxide. Background Art

[0002] Methanol is one of the important basic raw materials in the chemical industry, mainly used to produce organic chemical products such as formaldehyde and dimethyl ether. In addition, methanol is also a clean energy source that can be directly used as a fuel for internal combustion engines or fuel cells. Methanol can be prepared by hydrogenating carbon dioxide. In the related art, the cover of the reactor is not easy to disassemble, which is not conducive to the technicians to inspect and maintain the inside of the reactor. Summary of the invention

[0003] The purpose of the present disclosure is to provide a reactor for producing methanol by hydrogenating carbon dioxide, so as to at least partially solve the problems existing in the related art.

[0004] In order to achieve the above object, the present disclosure provides a reactor for preparing methanol by hydrogenating carbon dioxide, comprising: frame; A cylinder body connected to the frame; a cover body, which is arranged to cover the cylinder mouth of the cylinder body; and A locking mechanism, the locking mechanism includes a protrusion, a fixed block, a first spring and a first sliding rod, wherein one of the protrusion and the fixed block is connected to the outer wall of the cylinder, and the other is connected to the outer wall of the cover body, the fixed block is provided with a groove, the protrusion is engaged with the groove, the fixed block and the protrusion are both provided with limiting holes, the first sliding rod can be slidably passed through the two limiting holes, the first spring is arranged between the fixed block and the first sliding rod, and has an elastic force that drives the first sliding rod to pass through the limiting hole.

[0005] Optionally, a sleeve is installed at one end of the fixing block away from the protrusion, the first sliding rod includes a first rod segment and a second rod segment, the first rod segment and the second rod segment are arranged at an angle, a ring piece is fixed at one end of the first rod segment away from the second rod segment, the first rod segment drives the ring piece to be slidably arranged in the sleeve, and the first spring abuts between the sleeve and the ring piece; Wherein, when the first rod segment is inserted into the limiting hole, the ring piece abuts against the fixing block, and the second rod segment is used to abut against the outer wall of the end of the sleeve away from the fixing block.

[0006] Optionally, the first spring is sleeved on the outer circumference of the first rod segment.

[0007] Optionally, the carbon dioxide hydrogenation to methanol reactor further includes a shock absorbing mechanism, and the cylinder is connected to the frame via the shock absorbing mechanism.

[0008] Optionally, the shock absorbing mechanism comprises: An abutment block, which can be horizontally slidably arranged on the frame; a shock absorbing assembly installed between the frame and the abutment block; and The transmission assembly is arranged between the abutment block and the cylinder to convert the up-and-down movement of the cylinder into the horizontal sliding of the abutment block.

[0009] Optionally, the shock absorbing assembly includes a hydraulic damper and a second spring, and the second spring is sleeved on the outer circumference of the hydraulic damper.

[0010] Optionally, the transmission assembly includes: A second sliding rod is slidably connected to the frame in a vertical direction and fixedly connected to the bottom of the cylinder; and The rotating rod has two ends respectively hinged to the second sliding rod and the abutment block.

[0011] Optionally, a guide rod extending along the sliding direction of the abutment block is mounted on the frame, and the abutment block is slidably sleeved on the guide rod.

[0012] Optionally, a movable plate is installed at one end of the second sliding rod away from the cylinder, protrusions are provided at both ends of the movable plate, the frame is provided with a slide groove extending in the up and down directions, the protrusion is slidably connected to the slide groove, and the rotating rod is hinged to the movable plate.

[0013] Optionally, the carbon dioxide hydrogenation to methanol reactor further comprises a screw and an adjustment plate, wherein the screw extends into the frame and is screwed to the frame and the adjustment plate respectively, and an end of the adjustment plate away from the screw abuts against the movable plate.

[0014] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects: The cylinder is installed on the frame, and the cover can be covered at the mouth of the cylinder. Hydrogen and carbon dioxide and other raw materials are introduced into the cylinder or the cover to prepare methanol. The cylinder and the cover are connected by a snap-fit ​​mechanism. Specifically, when the cover and the cylinder need to be separated, the first slide bar is pulled to extend the first slide bar out of the limit hole. Since the first slide bar no longer forms a stop on the protrusion and the groove, the technician can easily remove the cover from the cylinder, which is convenient for the technician to inspect the parts in the cylinder or the cover. The first spring is compressed. After inspecting and maintaining the parts inside the reactor for producing methanol from carbon dioxide hydrogenation, the protrusion is inserted into the groove again. The elastic reset of the first spring drives the first slide bar to extend into the two limit holes, avoiding the separation of the cover and the cylinder during operation of the reactor for producing methanol from carbon dioxide hydrogenation, facilitating the detachable separation and connection of the cover and the cylinder, so as to facilitate the technician to repair the parts inside the reactor for producing methanol from carbon dioxide hydrogenation.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 It is a schematic diagram of a reactor for producing methanol by hydrogenating carbon dioxide according to an exemplary embodiment of the present disclosure.

[0017] Figure 2 It is a cross-sectional view of a reactor for producing methanol by hydrogenating carbon dioxide according to an exemplary embodiment of the present disclosure.

[0018] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A in the middle.

[0019] Figure 4 It is a schematic diagram of a shock absorbing mechanism in a reactor for producing methanol by hydrogenation of carbon dioxide according to an exemplary embodiment of the present disclosure.

[0020] Description of Reference Numerals 100, frame; 110, guide rod; 120, slide; 200, cylinder; 210, drain outlet; 300, cover; 310, water inlet pipe; 320, air inlet pipe; 400, locking mechanism; 410, protrusion; 420, fixing block; 421, groove; 430, first spring; 440, first slide bar; 441, first rod section; 442, second rod section; 450, sleeve; 460, ring plate; 500, shock absorbing mechanism; 510, abutment block; 520, shock absorbing assembly; 521, hydraulic damper; 522, second spring; 530, transmission assembly; 531, second slide bar; 532, rotating rod; 540, moving plate; 551, screw rod; 552, adjusting plate; 610, motor; 620, stirring blade. DETAILED DESCRIPTION

[0021] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0022] In this disclosure, unless otherwise stated, directional words such as "upper, lower, left, right" are used for the convenience of description and are defined according to the drawing direction of the corresponding drawings, and "inside, outside" are defined according to the contours of the corresponding parts. Terms such as "first, second" and the like used in this disclosure are used to distinguish one element from another and do not have order or importance. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0023] See also Figure 1 and Figure 2 , a carbon dioxide hydrogenation methanol reactor provided in an embodiment of the present disclosure can be used to prepare chemical products such as methanol and formaldehyde. The carbon dioxide hydrogenation methanol reactor includes a frame 100, a cylinder 200, a cover 300 and a clamping mechanism 400. Among them, the cylinder 200 can be connected to the frame 100. The cover 300 can be covered on the cylinder mouth of the cylinder 200. The clamping mechanism 400 may include a convex block 410, a fixed block 420, a first spring 430 and a first slide bar 440. Among them, one of the protrusion 410 and the fixed block 420 can be connected to the outer wall of the cylinder 200, and the other can be connected to the outer wall of the cover 300. The fixed block 420 can be provided with a groove 421, and the protrusion 410 can be engaged with the groove 421. The fixed block 420 and the protrusion 410 can both be provided with a limiting hole. The first slide bar 440 can be slidably penetrated in the two limiting holes, and one end of the first slide bar 440 close to the limiting hole is configured as an arc structure, which is convenient for insertion into the limiting hole. The first spring 430 can be arranged between the fixed block 420 and the first slide bar 440, and can have an elastic force that drives the first slide bar 440 to penetrate in the limiting hole.

[0024] It can be understood that the barrel 200 is installed on the frame 100, and the cover 300 can be covered at the barrel mouth of the barrel 200, and raw materials such as hydrogen and carbon dioxide are introduced into the barrel 200 or the cover 300 to achieve the preparation of methanol. The barrel 200 and the cover 300 are connected by a snap-fit ​​mechanism 400. Specifically, when the cover 300 and the barrel 200 need to be separated, the first slide bar 440 is pulled to make the first slide bar 440 extend out of the limit hole. Since the first slide bar 440 no longer forms a stop on the protrusion 410 and the groove 421, it is convenient for the cover 300 and the barrel 200 to be detachable and separated, so that Technicians can easily disassemble and separate the cover body 300 from the cylinder body 200, which is convenient for technicians to inspect and repair the components inside the cylinder body 200 or the cover body 300. The first spring 430 is compressed. After inspecting and maintaining the internal parts, the protrusion 410 is extended into the groove 421. The elastic reset of the first spring 430 drives the first slide bar 440 to extend into the two limit holes, thereby preventing the cover body 300 and the cylinder body 200 from separating during the preparation of methanol, facilitating the detachable separation and connection of the cover body 300 and the cylinder body 200, thereby facilitating technicians to repair the components inside the reactor for producing methanol from carbon dioxide by hydrogenation.

[0025] In one embodiment, see Figure 1 and Figure 2 The number of the engaging mechanisms 400 can be multiple, and can be arranged on the cylinder 200 and the cover 300 at intervals along the circumferential direction. For example, the number of the engaging mechanisms 400 can be three, four, or five or more, etc., and no specific limitation is made here. By providing multiple engaging mechanisms 400, the stability of the connection between the cylinder 200 and the cover 300 can be improved, and the separation of the cylinder 200 and the cover 300 caused by the high internal gas pressure during the chemical reaction of the reactor for preparing methanol by hydrogenation of carbon dioxide can be avoided.

[0026] In one embodiment, see Figure 2 and Figure 3, a sleeve 450 may be installed at one end of the fixed block 420 away from the protrusion 410, the first slide bar 440 may include a first rod segment 441 and a second rod segment 442, the first rod segment 441 and the second rod segment 442 may be arranged at an angle, a ring piece 460 may be fixed at one end of the first rod segment 441 away from the second rod segment 442, the first rod segment 441 may drive the ring piece 460 to be slidably penetrated in the sleeve 450, because the sleeve 450 may be used to support and store the first rod segment 441, so when the cylinder 200 and the cover body 300 are separated, there is no need for workers to additionally store the first slide bar 440. The first spring 430 may abut between the sleeve 450 and the ring piece 460. Among them, when the first rod segment 441 is penetrated in the limiting hole, the ring piece 460 may abut against the fixed block 420, and the second rod segment 442 may be used to abut against the outer wall of the end of the sleeve 450 away from the fixed block 420. The first slide bar 440 is configured in a bent shape, so that the worker can hold the first slide bar 440. At the same time, it is ensured that the first slide bar 440 will not be completely inserted into the sleeve 450 during the process of penetrating the limiting hole.

[0027] It can be understood that when the cover body 300 and the cylinder body 200 need to be separated, the first slide bar 440 is pulled to extend the first slide bar 440 out of the limiting hole, and the first spring 430 is compressed. At this time, pulling the cover body 300 upward can disengage the protrusion 410 from the groove 421, so that the cover body 300 can be separated from the cylinder body 200; after inspecting the parts in the cylinder body 200, the cover body 300 is placed on the cylinder mouth of the cylinder body 200. At this time, the protrusion 410 can extend into the groove 421, and the elastic reset of the first spring 430 can drive the first slide bar 440 to extend into the two limiting holes until the ring piece 460 abuts against the fixed block 420, thereby preventing the cover body 300 and the cylinder body 200 from being separated during operation of the reactor for producing methanol from carbon dioxide hydrogenation.

[0028] In this implementation, see Figure 2 and Figure 3 , the protrusion 410 can be connected to the outer wall of the cover body 300, and the fixing block 420 can be connected to the outer wall of the cylinder 200. When the cover body 300 and the cylinder 200 are separated, there is no need for the cover body 300 to drive the sleeve 450, the first spring 430 and the first slide bar 440 to move upward, which is more labor-saving. Of course, in other embodiments, the protrusion 410 can be connected to the outer wall of the cylinder 200, and the fixing block 420 can be connected to the outer wall of the cover body 300, and no specific limitation is made here.

[0029] In one embodiment, see Figure 3 The first spring 430 can be sleeved on the outer circumference of the first rod segment 441 , saving the installation space of the first rod segment 441 and facilitating the miniaturization of the sleeve 450 .

[0030] In one embodiment, see Figure 1 and Figure 2 The carbon dioxide hydrogenation methanol reactor may further include a shock absorbing mechanism 500, and the cylinder 200 may be connected to the frame 100 through the shock absorbing mechanism 500. The carbon dioxide hydrogenation methanol reactor is prevented from vibrating during the reaction process, thereby improving the practicality of the device. The number of the shock absorbing mechanisms 500 may be multiple, so as to reduce the vibration of the carbon dioxide hydrogenation methanol reactor during the operation process.

[0031] In one embodiment, see Figure 2 , the shock absorbing mechanism 500 may include an abutment block 510, a shock absorbing assembly 520 and a transmission assembly 530. The abutment block 510 may be horizontally slidably arranged on the frame 100. The shock absorbing assembly 520 may be installed between the frame 100 and the abutment block 510. The transmission assembly 530 may be arranged between the abutment block 510 and the cylinder 200 to convert the up and down movement of the cylinder 200 into the horizontal sliding of the abutment block 510. The up and down movement energy of the cylinder 200 is effectively converted into the horizontal sliding of the abutment block 510, so that the shock absorbing assembly 520 and the abutment block 510 can jointly consume the vibration energy of the cylinder 200. Specifically, during the horizontal sliding process, frictional force will be generated between the abutment block 510 and the frame 100, and the frictional force can consume the energy of the up and down vibration of the cylinder 200 together with the shock absorbing buffering force of the shock absorbing assembly 520.

[0032] It can be understood that the carbon dioxide hydrogenation methanol reactor can move downward during the vibration process. At this time, the transmission assembly 530 can convert the downward movement of the cylinder 200 into the outward horizontal movement of the abutment block 510, so that the abutment block 510 can abut the shock absorbing assembly 520. According to the principle of action and reaction force, the shock absorbing assembly 520 can give the abutment block 510 a reverse force to prevent it from continuing to move, thereby preventing the cylinder 200 from continuing to move downward; when the carbon dioxide hydrogenation methanol reactor moves upward during the vibration process, the transmission assembly 530 converts the upward movement of the cylinder 200 into the inward horizontal movement of the abutment block 510, and the abutment block 510 will pull the shock absorbing assembly 520 to move. The shock absorbing assembly 520 can give the abutment block 510 a reverse pulling force to prevent it from continuing to move, thereby preventing the cylinder 200 from continuing to move downward.

[0033] Furthermore, a rubber pad is provided at the bottom of the abutment block 510 , and the rubber pad can be used to increase the friction resistance between the abutment block 510 and the frame 100 to prevent the horizontal movement of the abutment block 510 , thereby reducing the vibration of the cylinder 200 .

[0034] In one embodiment, see Figure 4The shock absorbing assembly 520 may include a hydraulic damper 521 and a second spring 522. The second spring 522 may be sleeved on the outer circumference of the hydraulic damper 521, saving the installation space of the hydraulic damper 521. The second spring 522 may be used to buffer and offset the force of the abutment block 510 on the shock absorbing assembly 520. The hydraulic damper 521 provides resistance to movement to consume the movement energy of the abutment block 510, thereby consuming the movement energy of the cylinder 200.

[0035] Of course, in other embodiments, the shock absorbing assembly 520 may include an electromagnetic damper, an oil damper, etc., which is not specifically limited here.

[0036] In one embodiment, see Figure 4 The transmission assembly 530 may include a second slide bar 531 and a rotating rod 532. The second slide bar 531 may be slidably connected to the frame 100 in the vertical direction, and may be fixedly connected to the bottom of the cylinder 200. The two ends of the rotating rod 532 may be hinged to the second slide bar 531 and the abutment block 510, respectively, so that the up-and-down movement of the second slide bar 531 driven by the cylinder 200 is converted into the horizontal movement of the abutment block 510, and the vibration of the cylinder 200 may be reduced under the dual effects of the buffering force of the shock absorbing assembly 520 and the friction force of the abutment block 510.

[0037] It can be understood that when the cylinder 200 vibrates upward, it can drive the second slide bar 531 to move upward, and the second slide bar 531 can pull one end of the rotating rod 532 to move upward, so that the other end of the rotating rod 532 can pull the abutment block 510 to move inward, and the abutment block 510 can pull the shock absorbing assembly 520 to consume energy; when the cylinder 200 drives the second slide bar 531 to move downward, the second slide bar 531 can push one end of the rotating rod 532 to move downward, so that the other end of the rotating rod 532 pushes the abutment block 510 to move outward horizontally, and the abutment block 510 pushes the shock absorbing assembly 520 to consume energy.

[0038] For further information, see Figure 4 , the number of the second sliding bars 531 is two, and they are symmetrically arranged at the bottom of the cylinder 200. It is ensured that both sides of the cylinder 200 can move up and down at the same time. A moving plate 540 can be installed at the bottom of the two second sliding bars 531, and the rotating rod 532 is hinged to the moving plate 540, and the second sliding bar 531 drives the rotating rod 532 to move through the moving plate 540. The number of the rotating rods 532 is two, and they are symmetrically arranged on the frame 100. The number of the abutment blocks 510 and the shock absorbing assembly 520 is two, and they are respectively arranged in one-to-one correspondence with the two rotating rods 532. By setting two groups of rotating rods 532, abutment blocks 510 and shock absorbing assemblies 520, the vibration reduction of the cylinder 200 by the shock absorbing mechanism 500 can be enhanced.

[0039] In another embodiment, the transmission assembly 530 may include a first sliding shaft and a second sliding shaft. The first sliding shaft can be installed at the bottom of the cylinder 200 and can be slidably connected to the frame 100 in the vertical direction. The second sliding shaft can slide on the frame 100. One end of the second sliding shaft is connected to the abutment block 510, and the other end is constructed in a wedge shape for abutting and cooperating with the first sliding shaft. The cylinder 200 can drive the first sliding shaft to move downward, so that the first sliding shaft can abut the wedge-shaped portion of the second sliding shaft, so that the second sliding shaft can drive the abutment block 510 to move horizontally, thereby converting the downward movement of the cylinder 200 into the horizontal movement of the abutment block 510 and the shock absorbing assembly 520.

[0040] Furthermore, a damper may be installed at the bottom of the cylinder 200 , and the damper is used to reduce the vibration of the cylinder 200 .

[0041] In one embodiment, see Figure 4 The frame 100 may be provided with a guide rod 110 extending along the sliding direction of the abutment block 510, and the abutment block 510 may be slidably sleeved on the guide rod 110. The abutment block 510 is ensured to move in a straight line, thereby ensuring the stability of the buffering and shock absorbing process.

[0042] In one embodiment, see Figure 4 A movable plate 540 may be installed at one end of the second slide bar 531 away from the cylinder 200, protrusions may be provided at both ends of the movable plate 540, the frame 100 may be provided with a slide groove 120 extending in the up and down directions, the protrusion may be slidably connected to the slide groove 120, and the rotating rod 532 may be hinged to the movable plate 540 to ensure that the second slide bar 531 can move in a straight line.

[0043] In one embodiment, see Figure 4 The carbon dioxide hydrogenation reactor for methanol production may further include a screw 551 and an adjustment plate 552. The screw 551 may extend into the frame 100 and may be screwed to the frame 100 and the adjustment plate 552 respectively. The end of the adjustment plate 552 away from the screw 551 may abut against the moving plate 540. This facilitates controlling the initial compression amount of the shock absorbing assembly 520 and preventing the cylinder 200 from moving during the shock absorbing process.

[0044] It can be understood that by rotating the screw rod 551 to drive the adjustment plate 552 to move downward, the movable plate 540 can push one end of the rotating rod 532 to move downward, so that the other end of the rotating rod 532 can drive the abutment block 510 to slide horizontally outward, thereby increasing the compression amount of the shock absorbing assembly 520 in the initial state. Similarly, rotating the screw rod 551 in the opposite direction can reduce the compression amount of the shock absorbing assembly 520 in the initial state.

[0045] In one embodiment, see Figure 2A motor 610 is installed on the cover body 300 , and a stirring blade 620 is installed on the rotating shaft of the motor 610 for stirring the reactants in the cylinder body 200 .

[0046] In one embodiment, see Figure 2 The cover 300 is provided with a water inlet pipe 310 and an air inlet pipe 320. When the carbon dioxide hydrogenation to methanol reactor is used to prepare methanol, the air inlet pipe 320 is used to inject hydrogen. Hydrogen and water react in the cylinder 200 to generate methanol. This reaction is a prior art and will not be described in detail here. A drain port 210 may be provided at the bottom of the cylinder 200 for discharging water after the reaction. A drain pipe may be installed at the drain port 210, and a solenoid valve may be installed on the drain pipe to control the discharge of water.

[0047] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0048] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0049] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A reactor for preparing methanol by hydrogenation of carbon dioxide, characterized in that: include: frame; A cylinder body connected to the frame; A cover body, which is arranged to cover the mouth of the cylinder body; as well as A locking mechanism, the locking mechanism includes a protrusion, a fixed block, a first spring and a first sliding rod, wherein one of the protrusion and the fixed block is connected to the outer wall of the cylinder, and the other is connected to the outer wall of the cover body, the fixed block is provided with a groove, the protrusion is engaged with the groove, the fixed block and the protrusion are both provided with limiting holes, the first sliding rod can be slidably passed through the two limiting holes, the first spring is arranged between the fixed block and the first sliding rod, and has an elastic force that drives the first sliding rod to pass through the limiting hole.

2. The reactor for preparing methanol by hydrogenation of carbon dioxide according to claim 1, characterized in that: A sleeve is installed at one end of the fixing block away from the protrusion, the first sliding rod includes a first rod segment and a second rod segment, the first rod segment and the second rod segment are arranged at an angle, a ring piece is fixed at one end of the first rod segment away from the second rod segment, the first rod segment drives the ring piece to be slidably inserted into the sleeve, and the first spring abuts between the sleeve and the ring piece; Wherein, when the first rod segment is inserted into the limiting hole, the ring piece abuts against the fixing block, and the second rod segment is used to abut against the outer wall of the end of the sleeve away from the fixing block.

3. The reactor for preparing methanol by hydrogenation of carbon dioxide according to claim 2, characterized in that: The first spring is sleeved on the outer circumference of the first rod segment.

4. The reactor for preparing methanol by hydrogenation of carbon dioxide according to any one of claims 1 to 3, characterized in that: The reactor for preparing methanol by hydrogenating carbon dioxide further comprises a shock absorbing mechanism, and the cylinder is connected to the frame via the shock absorbing mechanism.

5. The reactor for preparing methanol by hydrogenation of carbon dioxide according to claim 4, characterized in that: The shock absorbing mechanism comprises: An abutment block, which can be horizontally slidably arranged on the frame; a shock absorbing assembly installed between the frame and the abutment block; and The transmission assembly is arranged between the abutment block and the cylinder body, and is used for converting the up-and-down movement of the cylinder body into the horizontal sliding of the abutment block.

6. The reactor for preparing methanol by hydrogenation of carbon dioxide according to claim 5, characterized in that: The shock absorbing assembly includes a hydraulic damper and a second spring, wherein the second spring is sleeved on the outer circumference of the hydraulic damper.

7. The reactor for preparing methanol by hydrogenation of carbon dioxide according to claim 5, characterized in that: The transmission assembly comprises: A second sliding rod is slidably connected to the frame in a vertical direction and fixedly connected to the bottom of the cylinder; and The rotating rod has two ends respectively hinged to the second sliding rod and the abutment block.

8. The reactor for preparing methanol by hydrogenation of carbon dioxide according to claim 7, characterized in that: A guide rod extending along the sliding direction of the abutment block is installed on the frame, and the abutment block is slidably sleeved on the guide rod.

9. The reactor for preparing methanol by hydrogenation of carbon dioxide according to claim 7, characterized in that: A movable plate is installed at one end of the second slide rod away from the cylinder, protrusions are provided at both ends of the movable plate, the frame is provided with a slide groove extending in the up and down directions, the protrusion is slidably connected to the slide groove, and the rotating rod is hinged to the movable plate.

10. The reactor for preparing methanol by hydrogenation of carbon dioxide according to claim 9, characterized in that: The reactor for preparing methanol by hydrogenating carbon dioxide also includes a screw and an adjustment plate. The screw extends into the frame and is screwed to the frame and the adjustment plate respectively. One end of the adjustment plate away from the screw abuts against the movable plate.

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