Methanol synthesis device

Abstract

The invention belongs to the technical field of methanol synthesis, and discloses a methanol synthesis device, which comprises a methanol synthesis tower and a plurality of catalyst members, the outer wall of the methanol synthesis tower is fixedly connected with two tower covers, the tower covers are communicated with the methanol synthesis tower, a connecting shaft is rotatably connected between the two tower covers, and the connecting shaft is connected with the methanol synthesis tower. And two positioning sleeves are fixedly connected to the peripheral wall of the connecting shaft. According to the device, through one-time rotation of the connecting shaft, alignment of catalyst piece stations can be completed, through one-time linear pushing of the plug rod, loading of a new piece and discharging of an old piece can be completed synchronously, and the replacement efficiency is improved; the replacement operation is completed in the fixed and sealed chamber, and the replacement path of the catalyst part is limited in a closed channel formed by the two electric gate valves and the interior of the methanol synthesis tower, so that the leakage risk caused by long-term abrasion of a complex movable sealing mechanism at high temperature and high pressure is eliminated; and the safety and reliability of long-term operation of the equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of methanol synthesis, and more specifically, to a methanol synthesis apparatus. Background Technology

[0002] Methanol synthesis is a typical catalytic reaction process, and its production efficiency is closely related to catalyst activity. In traditional fixed-bed methanol synthesis towers, the catalyst is usually packed in granular form. When the catalyst deactivates, the reactor must be shut down, depressurized, and cooled before replacement. This process is not only time-consuming and leads to production interruptions and significant economic losses, but also poses safety risks under high temperature and high pressure conditions.

[0003] In actual industrial operations, due to factors such as syngas flow distribution, temperature gradient, local poisoning or sintering, catalyst deactivation is often uneven, and some catalyst cartridges may deactivate before others.

[0004] To reduce downtime, existing technology, as disclosed in document CN116899521B, presents a methanol synthesis unit that uses a rotatable turntable and angled drum to arrange catalyst cartridges, which are then removed and placed using an external robotic arm. While this approach achieves a degree of mechanized replacement, it still has shortcomings. First, the catalyst cartridge replacement process in this unit is an intermittent operation of removing and then reinstalling, resulting in low replacement efficiency. Second, enabling the robotic arm to enter and exit the reactor requires a complex movable sealing mechanism, which poses a leakage risk under the high-temperature and high-pressure syngas environment during long-term use. Therefore, we propose a methanol synthesis unit. Summary of the Invention

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a methanol synthesis apparatus in which the catalyst assembly position can be aligned with a single rotation of the connecting shaft, and a new assembly can be simultaneously loaded and an old assembly discharged with a single linear advance of the plug rod, thus improving replacement efficiency. Furthermore, all replacement operations are completed within a fixed, sealed chamber, and the catalyst replacement path is confined to a closed channel formed by two electric gate valves and the interior of the methanol synthesis tower. This eliminates the risk of leakage caused by long-term wear of complex moving sealing mechanisms under high temperature and pressure, thereby enhancing the long-term safety and reliability of the equipment.

[0006] A methanol synthesis apparatus includes a methanol synthesis tower and multiple catalyst elements. Two tower covers are fixedly connected to the outer wall of the methanol synthesis tower, and the tower covers communicate with the methanol synthesis tower. A connecting shaft is rotatably connected between the two tower covers. Two positioning sleeves are fixedly connected to the outer peripheral wall of the connecting shaft. Each positioning sleeve has multiple positioning holes on its end face. A fixing sleeve is fixedly connected to the outer peripheral wall of the connecting shaft, and the fixing sleeve has multiple fixing holes on its end face. A positioning assembly is installed on the outer wall of the fixing sleeve. One end of each catalyst element is inserted into a fixing hole, and the other end passes through the positioning holes on the two positioning sleeves respectively. The positioning assembly is used to fix the catalyst elements. Electric gate valves are fixedly connected to the outer end faces of both tower covers, and the electric gate valves communicate with the methanol synthesis tower. A limit groove is formed on the outer wall of the methanol synthesis tower. A conveying plate is slidably connected to the inner wall of the limit groove. A stopper rod is fixedly connected to the inner wall of the conveying plate. An external hydraulic cylinder pushes the conveying plate to move, and the conveying plate drives the stopper rod to move sequentially into the discharge pipe, the electric gate valve, and the methanol synthesis tower.

[0007] Preferably, the catalyst component includes a catalyst cylinder, the outer peripheral wall of which has multiple through holes and a positioning groove, and both ends of the catalyst cylinder are fitted with plugs.

[0008] Preferably, the positioning assembly includes multiple positioning rods, each of which is slidably connected to a fixed sleeve. The ends of the positioning rods extend into the fixed holes, and each positioning rod has a first spring sleeved on its outer peripheral wall. The ends of the positioning rods are respectively engaged with positioning grooves.

[0009] Preferably, one end of the first spring is fixedly connected to the fixed sleeve, and the other end of the first spring is fixedly connected to the positioning rod.

[0010] Preferably, a motor is fixedly connected to the outer end of one of the tower covers, and the output end of the motor is fixedly connected to the connecting shaft.

[0011] Preferably, the end of the electric gate valve near the fixed sleeve is fixedly connected to a feeding pipe, and the end of the electric gate valve away from the fixed sleeve is fixedly connected to a discharging pipe.

[0012] Preferably, two support plates are fixedly connected to the outer wall of the discharge pipe, and a sliding rod is fixedly connected to the inner wall of each support plate. A second spring is sleeved on the outer circumference of each sliding rod, and a slider is slidably connected to the outer wall of each sliding rod. A rotating shaft is rotatably connected between the two sliders. The two ends of the rotating shaft pass through the sliders and extend to their outer sides. A conveying gear is fixedly connected to the outer circumference of each rotating shaft. The conveying gear is located between the two support plates, and a rubber block is fixedly connected to the tooth end of each conveying gear. One end of the second spring is fixedly connected to the slider, and the other end of the second spring is fixedly connected to the support plate.

[0013] Preferably, two fork arms are fixedly connected to the end of the conveyor plate. The ends of the fork arms are bent towards the discharge pipe to form bent ends. Two support plates are located between the two fork arms. The outer walls of the fork arms are provided with through holes. The distance between the two through holes is greater than the length of the rotating shaft. The inner walls of the through holes are rotatably connected to fixed shafts. A torsion spring is sleeved on the end of the fixed shaft. One end of the torsion spring is fixedly connected to the fork arm, and the other end of the torsion spring is fixedly connected to a baffle. A baffle is fixedly connected to the outer peripheral wall of the fixed shaft. The end of the baffle is bent to form a bent plate. The bending direction of the bent plate is opposite to that of the bent end. A bending hole is provided at the top of the bent plate. A fracture crack is provided on the inner wall of the bending hole. The bent plate forms an elastic bend through the bending hole and the fracture crack.

[0014] Preferably, the inner wall of the discharge pipe is embedded with a plurality of rotating balls, and the outer wall of the discharge pipe is provided with a connection hole.

[0015] Preferably, the methanol synthesis device further includes a drive gear plate, with guide rods slidably connected to each of the four corners of the drive gear plate. The ends of the guide rods are fixedly connected to the fork arms, and a third spring is sleeved on the outer wall of each guide rod. The drive gear plate meshes with the conveying gear.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention aligns the catalyst element position with a single rotation of the connecting shaft and simultaneously inserts a new element and removes an old one with a single linear advance of the plug rod. This process eliminates the need for repeated robotic arm movements, resulting in simple and continuous actions. The replacement time for a single element is reduced to a single linear stroke, significantly improving replacement efficiency. Furthermore, all replacement operations are performed within a fixed, sealed chamber, confining the catalyst element replacement path to a closed channel formed by two electric gate valves and the methanol synthesis tower. The electric gate valves remain closed before and after replacement, opening only during material feeding and discharging. As mature static sealing elements, their sealing reliability far exceeds that of dynamic, movable seals. This design eliminates the leakage risk caused by the long-term wear of complex movable sealing mechanisms under high temperature and pressure, enhancing the long-term safety and reliability of the equipment. This invention supports selective replacement based on catalyst activity monitoring. By identifying individual deactivated catalyst cartridges and replacing them specifically, it avoids the waste of overall replacement, extends the catalyst system's lifespan, and reduces operating costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the methanol synthesis tower of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the installation structure of the methanol synthesis tower of the present invention; Figure 5 This is a schematic diagram of the installation structure of the positioning sleeve and the fixing sleeve of the present invention; Figure 6 This is a schematic diagram of the catalyst cartridge of the present invention; Figure 7 This is a schematic diagram of the fork arm mounting structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle; Figure 9 For the present invention Figure 7 Enlarged view of point B in the middle; Figure 10 This is a schematic diagram of the installation structure of the conveying gear of the present invention; Figure 11 This is a schematic diagram of the installation structure of the baffle of the present invention.

[0019] Explanation of the numbers in the diagram: 1. Methanol synthesis tower; 2. Tower cover; 3. Limiting groove; 4. Electric gate valve; 5. Feed pipe; 6. Discharge pipe; 601. Connecting hole; 602. Ball bearing; 7. Connecting shaft; 8. Positioning sleeve; 801. Positioning hole; 9. Fixing sleeve; 10. Fixing hole; 11. Positioning rod; 12. First spring; 13. Motor; 14. Catalyst cylinder; 15. Through hole; 16. Positioning groove; 17. Plug; 18. 1801. Conveyor plate; 19. Fork arm; 20. Plug rod; 21. Bending end; 22. Support plate; 23. Slide rod; 24. Second spring; 25. Slider; 26. Rotating shaft; 27. Conveyor gear; 28. Rubber block; 29. ​​Drive gear plate; 30. Guide rod; 31. Third spring; 32. Through hole; 33. Fixed shaft; 34. Torsion spring; 35. Bending plate; 36. Bending hole; 37. Crack. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] like Figures 1-5 As shown, a methanol synthesis apparatus includes a methanol synthesis tower 1 and multiple catalyst elements. Two tower covers 2 are fixedly connected to the outer wall of the methanol synthesis tower 1, and the tower covers 2 communicate with the methanol synthesis tower 1. A connecting shaft 7 is rotatably connected between the two tower covers 2. Two positioning sleeves 8 are fixedly connected to the outer peripheral wall of the connecting shaft 7, and each positioning sleeve 8 has multiple positioning holes 801 on its end face. A fixing sleeve 9 is fixedly connected to the outer peripheral wall of the connecting shaft 7, and the fixing sleeve 9 has multiple fixing holes 10 on its end face. A positioning assembly is installed on the outer wall of the fixing sleeve 9. One end of each catalyst element is inserted into a fixing hole 10. Inside the 0, the other end passes through the positioning holes 801 on the two positioning sleeves 8 respectively. The positioning components are used to fix the catalyst components. Electric gate valves 4 are fixedly connected to the outer end faces of the two tower covers 2. Electric gate valves 4 are connected to methanol synthesis tower 1. Limit grooves 3 are opened on the outer wall of methanol synthesis tower 1. A conveying plate 18 is slidably connected to the inner wall of the limit groove 3. A stopper rod 19 is fixedly connected to the inner wall of the conveying plate 18. The external hydraulic cylinder pushes the conveying plate 18 to move. The conveying plate 18 drives the stopper rod 19 to move sequentially into the discharge pipe 6, the electric gate valve 4 and the methanol synthesis tower 1.

[0022] One of the tower covers 2 has a motor 13 fixedly connected to its outer end, and the output end of the motor 13 is fixedly connected to the connecting shaft 7.

[0023] The connection shaft 7 drives the fixed sleeve 9 and the positioning sleeve 8 to rotate to achieve alignment, and then the linear motion of the plug rod 19 completes the pushing and replacement. This transforms the intermittent operation of the existing technology of taking out and putting in into a continuous operation of taking in and putting out at the same time, thus improving the replacement efficiency.

[0024] The electric gate valve 4 replaces the complex moving sealing mechanism, controls the internal seal of the tower through the opening and closing of the valve, solves the leakage risk under high temperature and high pressure, and simplifies the structure and maintenance of the device.

[0025] The cooperation between the stopper rod 19 and the conveyor plate 18 provides mechanical thrust for the replacement of the catalyst cartridge 14, avoiding positioning deviations caused by manual operation and adapting to the replacement requirements of the heavy catalyst cartridge 14; the limiting groove 3 provides guidance for the conveyor plate 18, ensuring the accurate movement trajectory of the stopper rod 19 and avoiding interference with the internal components of the tower.

[0026] like Figure 5 and Figure 6 As shown, the catalyst component includes a catalyst cylinder 14, with multiple through holes 15 on the outer peripheral wall of the catalyst cylinder 14, a positioning groove 16 on the outer wall of the catalyst cylinder 14, and plugs 17 installed at both ends of the catalyst cylinder 14.

[0027] The through-hole 15 of the catalyst cartridge 14 is designed to increase the contact area between the synthesis gas and the catalyst, thereby improving the reaction efficiency; the plug 17 can protect the catalyst before the catalyst cartridge 14 is installed, preventing it from getting damp or contaminated during transportation or installation, and facilitating overall assembly and disassembly; the positioning groove 16 provides a snap-fit ​​point for the subsequent positioning components, ensuring that the catalyst cartridge 14 is fixed and stable, and preventing the contact area from being affected by vibration during the reaction.

[0028] The positioning assembly includes multiple positioning rods 11, which are slidably connected to the fixing sleeve 9. The ends of the positioning rods 11 extend into the fixing holes 10. Each positioning rod 11 has a first spring 12 sleeved on its outer peripheral wall. The ends of the positioning rods 11 are respectively engaged with the positioning grooves 16. One end of the first spring 12 is fixedly connected to the fixing sleeve 9, and the other end of the first spring 12 is fixedly connected to the positioning rod 11.

[0029] The first spring 12 is fixed at one end to the fixing sleeve 9 and at the other end to the positioning rod 11, ensuring that the positioning rod 11 automatically resets after the catalyst cylinder 14 is removed, without the need for manual adjustment, thus facilitating the installation of the new catalyst cylinder 14.

[0030] like Figure 4 As shown, the end of the electric gate valve 4 near the fixed sleeve 9 is fixedly connected to the feeding pipe 5, and the end of the electric gate valve 4 away from the fixed sleeve 9 is fixedly connected to the discharge pipe 6.

[0031] like Figures 7-11 As shown, two support plates 21 are fixedly connected to the outer wall of the discharge pipe 6. Slide rods 22 are fixedly connected to the inner wall of each support plate 21. A second spring 23 is sleeved on the outer circumference of each slide rod 22. A slider 24 is slidably connected to the outer wall of each slide rod 22. A rotating shaft 25 is rotatably connected between the two sliders 24. The two ends of the rotating shaft 25 pass through the sliders 24 and extend to their outer sides. A conveying gear 26 is fixedly connected to the outer circumference of each rotating shaft 25. The conveying gear 26 is located between the two support plates 21. A rubber block 27 is fixedly connected to the tooth end of each conveying gear 26. One end of the second spring 23 is fixedly connected to the slider 24, and the other end of the second spring 23 is fixedly connected to the support plate 21.

[0032] Two fork arms 1801 are fixedly connected to the end of the conveyor plate 18. The ends of the fork arms 1801 are bent towards the side of the discharge pipe 6 to form bent ends 20. Two support plates 21 are located between the two fork arms 1801. The outer wall of each fork arm 1801 is provided with a through hole 31. The distance between the two through holes 31 is greater than the length of the rotating shaft 25. The inner wall of each through hole 31 is rotatably connected with a fixed shaft 32. A torsion spring 33 is sleeved on the end of the fixed shaft 32. One end of the torsion spring 33 is fixedly connected to the fork arm 1801, and the other end of the torsion spring 33 is fixedly connected to the baffle 34. The outer peripheral wall of the fixed shaft 32 is fixedly connected with the baffle 34. The end of the baffle 34 is bent to form a bent plate 35. The bending direction of the bent plate 35 is opposite to that of the bent end 20. A bending hole 36 is provided at the top of the bent plate 35. A fracture crack 37 is provided on the inner wall of the bending hole 36. The bent plate 35 forms an elastic bend through the bending hole 36 and the fracture crack 37.

[0033] The inner wall of the discharge pipe 6 is embedded with multiple rotating balls 602, and the outer wall of the discharge pipe 6 is provided with a connection hole 601.

[0034] The methanol synthesis unit also includes a drive toothed plate 28, with guide rods 29 slidably connected at each of the four corners of the drive toothed plate 28. The distance between the two guide rods 29 at the same end of the drive toothed plate 28 is greater than the length of the rotating shaft 25, so that the rotating shaft 25 can pass between the two guide rods 29. The ends of the guide rods 29 are fixedly connected to the fork arms 1801 respectively. A third spring 30 is sleeved on the outer wall of each guide rod 29. The drive toothed plate 28 meshes with the conveying gear 26.

[0035] The conveying gear 26 cooperates with the rubber block 27 to provide auxiliary power for pushing the catalyst cylinder 14, reduce the pushing resistance of the plug rod 19, and avoid damage to the catalyst cylinder 14 caused by friction jamming; the second spring 23 provides elastic support for the rotating shaft 25 through the slider 24 to ensure that the rubber block 27 is always in contact with the catalyst cylinder 14.

[0036] The bent end 20 of the fork arm 1801 and the bent plate 35 of the baffle 34 form a double guide.

[0037] In this invention, not only is assistance provided when loading new catalyst components, but also the power to discharge old catalyst components is actively provided during the reset phase of the plug rod 19. The discharge of old components does not depend on gravity or the residual thrust of new components, but has an independent and reliable power guarantee, ensuring a smooth replacement process.

[0038] When the old part gets stuck and the resistance is too great, the conveying gear 26 stops rotating, causing the drive gear plate 28 to be unable to move. At this time, the fork arm 1801, which continues to reset, will absorb energy through the compression of the third spring 30 and the elastic bending or breaking of the baffle 34, thus avoiding motor overload or mechanism damage that may be caused by rigid connection.

[0039] In actual industrial operations, catalyst deactivation is often uneven due to factors such as syngas flow distribution, temperature gradient, local poisoning, or sintering, with some catalyst cartridges 14 deactivating first. However, existing technologies cannot selectively replace deactivated catalyst cartridges 14; they can only replace the entire cartridge, resulting in low catalyst utilization and high replacement costs. This invention supports selective replacement based on catalyst activity monitoring. By identifying individual deactivated catalyst cartridges 14 and replacing them specifically, it avoids the waste of replacing the entire cartridge, extends the lifespan of the catalyst system, and reduces operating costs.

[0040] In practical industrial applications, this device can be integrated with a catalyst activity monitoring system, such as an online gas analyzer or temperature sensor, to monitor the activity status of each catalyst cartridge 14 in real time. When the monitoring system detects that a catalyst cartridge 14 has become deactivated, for example, through changes in the composition of the gas at the reactor outlet or local temperature anomalies, it triggers a replacement procedure. The motor 13 is started, driving the connecting shaft 7 to rotate, aligning the position of the deactivated catalyst cartridge 14 with the electric gate valve 4. Then, the electric gate valve 4 is opened, and the hydraulic cylinder pushes the conveying plate 18 and the stopper rod 19 to simultaneously complete the loading of the new catalyst cartridge 14 and the discharge of the old catalyst cartridge 14. After replacement, the electric gate valve 4 is closed to restore the seal. This monitoring-based selective replacement method allows for the maintenance of catalyst efficiency without shutting down the reactor, extending the overall catalyst life and reducing replacement costs.

[0041] Syngas from the upstream section enters the methanol synthesis tower 1 from the top. The syngas first fills the annular space within the tower, enclosed by the tower body, positioning sleeve 8, and multiple catalyst cylinders 14. This space is the primary distribution zone of the entire reaction system, ensuring uniform contact between the gas and the outer wall of each catalyst cylinder. Under pressure differential, the syngas flows horizontally and radially through numerous through-holes 15 on the outer side of the catalyst cylinder 14, entering the interior of the catalyst cylinder. The catalyst cylinder 14 is filled with granular or other forms of catalyst. As the syngas passes through the catalyst bed within the cylinder, a catalytic reaction occurs under specific temperature and pressure conditions, primarily producing methanol and water.

[0042] Working principle: When the catalyst needs to be replaced, the stopper rod 19 is removed from the feed pipe 5, the new catalyst cylinder 14 is placed into the feed pipe 5, and the two electric gate valves 4 are opened.

[0043] Start motor 13 to drive connecting shaft 7 to rotate, which in turn drives fixed sleeve 9 and two positioning sleeves 8 fixed on it to rotate together, aligning one end of the deactivated catalyst cylinder 14 in the tower with the inlet of electric gate valve 4, while aligning the other end with the outlet of another electric gate valve 4.

[0044] An external hydraulic cylinder pushes the conveying plate 18 to slide along the limiting groove 3. The conveying plate 18 drives the stopper rod 19 to move. The stopper rod 19 enters the feeding pipe 5 and squeezes the new catalyst cylinder 14 into the tower. The end of the new catalyst cylinder 14 squeezes the old catalyst cylinder 14 on the fixing sleeve 9 and the positioning sleeve 8. At this time, the positioning rod 11 disengages from the positioning groove 16 on the old catalyst cylinder 14 until the positioning groove 16 is replaced in the fixing sleeve 9 and the positioning sleeve 8. Under the elastic force of the first spring 12, the positioning rod 11 automatically engages in the positioning groove 16, locking the new catalyst cylinder 14. The end of the old catalyst cylinder 14 extends into the discharge pipe 6 and rolls in contact with the ball bearing 602.

[0045] Before the old catalyst cylinder 14 enters the discharge pipe 6, the conveying plate 18 drives the two forks 1801 to move. The forks 1801 squeeze the two ends of the rotating shaft 25 through the bent ends 20. The rotating shaft 25 drives the slider 24 to slide along the slide bar 22, so that the second spring 23 is stretched. The rotating shaft 25 drives the conveying gear 26 to move out of the connecting hole 601.

[0046] As the fork arm 1801 continues to move, the rotating shaft 25 passes between the two guide rods 29 and slides along the fork arm 1801. When the conveying gear 26 moves out of the discharge pipe 6, it will squeeze the drive tooth plate 28 to move. The drive tooth plate 28 slides along the guide rod 29, stretches the third spring 30, and always maintains a state of engagement with the conveying gear 26. When the fork arm 1801 drives the drive tooth plate 28 to move, the drive tooth plate 28 can drive the conveying gear 26 to rotate.

[0047] The rotating shaft 25 slides along the baffle 34, squeezing the elastic bending plate 35. The bending plate 35 bends elastically along the bending hole 36 until the rotating shaft 25 moves to one side of the end of the bending plate 35. At this time, the old catalyst cylinder 14 enters the discharge pipe 6.

[0048] An external hydraulic cylinder drives the conveying plate 18 to move in the opposite direction, and the two ends of the rotating shaft 25 squeeze the bending plate 35. At this time, the fracture cracks 37 in the bending hole 36 come into contact with each other and limit the bending plate 35. Under the squeezing of the rotating shaft 25, the baffle 34 drives the fixed shaft 32 to rotate. The rotating shaft 25 passes through the through hole 31. Under the tension of the second spring 23, some of the teeth of the conveying gear 26 enter the connecting hole 601 and squeeze the outer wall of the old catalyst cylinder 14 through the rubber block 27. Under the tension of the third spring 30, the drive tooth plate 28 keeps meshed with the conveying gear 26. At this time, the fork arm 1801 drives the drive tooth plate 28 to move in the opposite direction, thereby driving the conveying gear 26 to rotate in the opposite direction, thereby pushing the old catalyst cylinder 14 out of the discharge pipe 6 and completing one replacement operation.

[0049] After replacement, close the two electric gate valves 4 to isolate the interior of methanol synthesis tower 1 from the external environment and ensure the stability of the reaction conditions inside the tower.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A methanol synthesis apparatus, comprising a methanol synthesis tower (1) and a plurality of catalyst elements, characterized in that: Two tower covers (2) are fixedly connected to the outer wall of the methanol synthesis tower (1). The tower covers (2) are connected to the methanol synthesis tower (1). A connecting shaft (7) is rotatably connected between the two tower covers (2). Two positioning sleeves (8) are fixedly connected to the outer peripheral wall of the connecting shaft (7). Multiple positioning holes (801) are opened on the end face of each positioning sleeve (8). A fixing sleeve (9) is fixedly connected to the outer peripheral wall of the connecting shaft (7). Multiple fixing holes (10) are opened on the end face of the fixing sleeve (9). A positioning component is installed on the outer wall of the fixing sleeve (9). One end of multiple catalyst elements is inserted into the fixing hole (10), and the other end passes through the two positioning components respectively. The positioning hole (801) on the sleeve (8) is used to fix the catalyst component. The outer end faces of the two tower covers (2) are fixedly connected to electric gate valves (4). The electric gate valves (4) are connected to the methanol synthesis tower (1). The outer wall of the methanol synthesis tower (1) is provided with a limiting groove (3). The inner wall of the limiting groove (3) is slidably connected to a conveying plate (18). The inner wall of the conveying plate (18) is fixedly connected to a stopper rod (19). The external hydraulic cylinder pushes the conveying plate (18) to move. The conveying plate (18) drives the stopper rod (19) to move sequentially into the discharge pipe (6), the electric gate valve (4), and the methanol synthesis tower (1).

2. The methanol synthesis apparatus according to claim 1, characterized in that: The catalyst component includes a catalyst cylinder (14), the outer peripheral wall of the catalyst cylinder (14) is provided with multiple through holes (15), the outer wall of the catalyst cylinder (14) is provided with a positioning groove (16), and plugs (17) are installed at both ends of the catalyst cylinder (14).

3. The methanol synthesis apparatus according to claim 2, characterized in that: The positioning assembly includes multiple positioning rods (11), which are slidably connected to the fixing sleeve (9). The ends of the positioning rods (11) extend into the fixing holes (10). The outer peripheral walls of the positioning rods (11) are all fitted with first springs (12). The ends of the positioning rods (11) are respectively engaged with the positioning grooves (16) on the catalyst cylinder (14).

4. The methanol synthesis apparatus according to claim 3, characterized in that: One end of the first spring (12) is fixedly connected to the fixed sleeve (9), and the other end of the first spring (12) is fixedly connected to the positioning rod (11).

5. The methanol synthesis apparatus according to claim 4, characterized in that: One of the tower covers (2) has a motor (13) fixedly connected to its outer end, and the output end of the motor (13) is fixedly connected to the connecting shaft (7).

6. The methanol synthesis apparatus according to claim 5, characterized in that: The end of the electric gate valve (4) near the fixed sleeve (9) is fixedly connected to the feed pipe (5), and the end of the electric gate valve (4) away from the fixed sleeve (9) is fixedly connected to the discharge pipe (6).

7. The methanol synthesis apparatus according to claim 6, characterized in that: Two support plates (21) are fixedly connected to the outer wall of the discharge pipe (6). A slide rod (22) is fixedly connected to the inner wall of each support plate (21). A second spring (23) is sleeved on the outer circumference of each slide rod (22). A slider (24) is slidably connected to the outer wall of each slide rod (22). A rotating shaft (25) is rotatably connected between the two sliders (24). The two ends of the rotating shaft (25) pass through the sliders (24) and extend to their outer sides. A conveying gear (26) is fixedly connected to the outer circumference of each rotating shaft (25). The conveying gear (26) is located between the two support plates (21). A rubber block (27) is fixedly connected to the tooth end of each conveying gear (26). One end of the second spring (23) is fixedly connected to the slider (24), and the other end of the second spring (23) is fixedly connected to the support plate (21).

8. The methanol synthesis apparatus according to claim 7, characterized in that: Two fork arms (1801) are fixedly connected to the end of the conveyor plate (18). The ends of the fork arms (1801) are bent towards the side of the discharge pipe (6) to form bent ends (20). Two support plates (21) are located between the two fork arms (1801). The outer walls of the fork arms (1801) are provided with through holes (31). The distance between the two through holes (31) is greater than the length of the rotating shaft (25). The inner walls of the through holes (31) are rotatably connected with fixed shafts (32). The end of the fixed shaft (32) is fitted with a torsion spring (33). One end of the spring (33) is fixedly connected to the fork arm (1801), and the other end of the spring (33) is fixedly connected to the baffle (34). The baffle (34) is fixedly connected to the outer peripheral wall of the fixed shaft (32). The end of the baffle (34) is bent to form a bending plate (35). The bending direction of the bending plate (35) is opposite to that of the bending end (20). A bending hole (36) is provided at the top of the bending plate (35). A fracture crack (37) is provided on the inner wall of the bending hole (36). The bending plate (35) forms an elastic bend through the bending hole (36) and the fracture crack (37).

9. The methanol synthesis apparatus according to claim 8, characterized in that: The inner wall of the discharge pipe (6) is provided with a plurality of rotating balls (602), and the outer wall of the discharge pipe (6) is provided with a connection hole (601).

10. The methanol synthesis apparatus according to claim 9, characterized in that: It also includes a drive gear plate (28), and guide rods (29) are slidably connected at the four corners of the drive gear plate (28). The ends of the guide rods (29) are fixedly connected to the fork arm (1801) respectively. A third spring (30) is sleeved on the outer wall of the guide rods (29). The drive gear plate (28) meshes with the conveying gear (26).

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