A methanol washing crystallization inhibition device

Abstract

This invention relates to the field of crystallization inhibition devices, and more particularly to a methanol washing crystallization inhibition device. It includes a base plate, a docking structure, and a fixing structure. Three support plates are provided on the upper surface of the base plate. A settling tank is installed on one side of the three support plates that are close to each other. An input pipe, a discharge pipe, a maintenance pipe, a discharge pipe, and a connecting pipe are installed inside the settling tank. A connecting pipe is installed on the side of the input pipe away from the settling tank via the docking structure. A baffle is installed on the side of the maintenance pipe away from the settling tank via the fixing structure. The arc surface of the input pipe has a docking structure. The methanol washing crystallization inhibition device provided by this invention avoids the drawbacks of traditional connection methods, such as cumbersome operation, inconvenient alignment adjustment, and the need for additional tools for locking, leading to low installation efficiency and affecting the timeliness of equipment maintenance and cleaning, when connecting the connecting pipe to the input pipe.

Description

Technical Field

[0001] This invention relates to the field of crystallization inhibition devices, and more particularly to a methanol washing crystallization inhibition device. Background Technology

[0002] The methanol washing crystallization inhibition device is a vertical cone-bottom settling tube. It is a device that achieves directional separation of sulfur crystals and methanol through gravity settling. Its function is to enrich and discharge sulfur-containing crystallized waste liquid, avoid heat exchanger blockage, reduce the total sulfur content of the purified gas, and ensure long-term stable operation of the system.

[0003] Existing technologies, such as the utility model patent with publication number CN206289223U, disclose a low-temperature methanol washing spray device. This patent includes a cooler, a coiled tube heat exchanger, and a spray main pipe. A crude gas inlet pipe is provided at the top of the cooler, and a flange interface and a check valve are provided on the crude gas inlet pipe. A first spray pipe is connected to the flange interface, and a nozzle A is provided at the end of the first spray pipe. A crude gas outlet pipe is provided at the bottom of the cooler, and a filter A, a slanted flange interface, and a check valve are provided on the crude gas outlet pipe. A second spray pipe is connected to the slanted flange interface, and a nozzle B is provided at the end of the second spray pipe. A flow meter is provided on the spray pipe. The spray main pipe is connected to the first and second spray pipes. The crude gas outlet pipe is connected to the coiled tube heat exchanger, and a filter B is provided after the coiled tube heat exchanger. The improvement of the low-temperature methanol washing spray device effectively suppresses the freezing blockage phenomenon of the low-temperature heat exchanger and prevents the entire system from being reduced in load due to crystallization and freezing blockage of the heat exchanger.

[0004] The above-mentioned issues have revealed the following drawbacks: during the installation of the connecting pipe onto the input pipe, the traditional connection method is cumbersome, inconvenient for alignment and adjustment, and requires additional tools for tightening, resulting in low installation efficiency and affecting the timeliness of equipment maintenance and cleaning. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as cumbersome operation, inconvenient alignment and adjustment, and the need for additional tools for locking during the process of connecting the pipe to the input pipe. These shortcomings result in low installation efficiency and affect the timeliness of equipment maintenance and cleaning. Therefore, this invention proposes a methanol washing crystallization inhibition device.

[0006] To solve the above-mentioned technical problems, the present invention provides a methanol washing crystallization inhibition device, comprising: a base plate, a docking structure, and a fixing structure. Three support plates are provided on the upper surface of the base plate. A settling tank is installed on one side of the three support plates close to each other. An input pipe, a discharge pipe, a maintenance pipe, a discharge pipe, and a connecting pipe are installed inside the settling tank. A connecting pipe is installed on the side of the input pipe away from the settling tank via the docking structure. A baffle is installed on the side of the maintenance pipe away from the settling tank via the fixing structure. The arc surface of the input pipe has a docking structure, which includes a rotating ring and a fixed ring. The rotating ring is threadedly connected to the input pipe, and the fixed ring is fixedly connected to the connecting pipe. A movable ring is rotatably connected to the side of the rotating ring near the fixed ring. The movable ring is slidably connected to the input pipe. Two fixed plates are fixedly connected to the arc surface of the movable ring. A limit groove is formed in the inner wall of the fixed plate. Two connecting plates are fixedly connected to the arc surface of the fixed ring. A connecting plate is fixedly connected to the side of the connecting plate near the movable ring, and the connecting plate is slidably connected to the limit groove.

[0007] The effect achieved by the above components is as follows: when personnel need to install the connecting pipe on the input pipe for use, they can move the connecting pipe to make the connecting plate slide into the inner wall of the limiting groove. Then, the personnel can rotate the rotating ring until the connecting pipe abuts against the input pipe, which makes it convenient for personnel to quickly install the connecting pipe on the input pipe and improves the efficiency of the installation.

[0008] Preferably, a limiting tube is fixedly connected to the inner wall of the connecting pipe, and the limiting tube is slidably connected to the input pipe.

[0009] The effect achieved by the above components is that the limiting tube can limit the position of the connecting tube, which can improve the stability of the connecting tube during use.

[0010] Preferably, a plurality of rotating rods are fixedly connected to the arc surface of the rotating ring, and the plurality of rotating rods are evenly distributed on the arc surface of the rotating ring.

[0011] The effect achieved by the above components is that the rotating rod makes it easy for personnel to rotate the rotating ring, which helps to improve the ease of operation for personnel.

[0012] Preferably, a sealing gasket is fixedly connected to the side of the connecting pipe near the input pipe, and the sealing gasket abuts against the input pipe.

[0013] The effect achieved by the above components is that the sealing gasket can increase the sealing between the connecting pipe and the input pipe, and can prevent methanol from leaking out from between the connecting pipe and the input pipe.

[0014] Preferably, a limiting ring is fixedly connected to the arc surface of the input tube, and the side of the limiting ring away from the moving ring is flush with the side of the input tube closer to the connecting tube.

[0015] The effect achieved by the above components is that the limiting ring can limit the movement ring, preventing the movement ring from accidentally rotating the ring excessively and causing it to detach from the surface of the input tube.

[0016] Preferably, the arc surface of the inspection pipe is provided with a fixing structure, which includes a connecting ring, four fixing blocks, a leak-proof pad, and four positioning blocks. The connecting ring is rotatably connected to the inspection pipe, the four fixing blocks are fixedly connected to the baffle, the four positioning blocks are fixedly connected to the inspection pipe, the leak-proof pad abuts against the inspection pipe, and four locking blocks are fixedly connected to the arc surface of the connecting ring. A positioning rod is fixedly connected to the side of the fixing block near the positioning block, the positioning rod is slidably connected to the positioning block, and an installation groove is opened on the inner wall of the positioning rod, the installation groove is slidably connected to the locking block.

[0017] The effect achieved by the above components is as follows: when personnel need to inspect the inside of the settling tank through the inspection pipe, they can first rotate the connecting ring until the locking block slides out of the inner wall of the mounting groove, and then move the baffle until the positioning rod slides out of the inner wall of the positioning block. This allows personnel to quickly disassemble the baffle and improves the efficiency of personnel's inspection.

[0018] Preferably, an adjusting ring is fixedly connected to the side of the connecting ring away from the positioning block, the adjusting ring is rotatably connected to the inspection tube, and a coil spring is provided on the side of the adjusting ring away from the connecting ring. One end of the coil spring is fixedly connected to the adjusting ring, and the other end of the coil spring is fixedly connected to an auxiliary ring, which is fixedly connected to the inspection tube.

[0019] The effect achieved by the above components is that the coil spring and adjusting ring can limit the connecting ring, preventing the connecting ring from rotating on its own during use and causing the locking block to slide out of the inner wall of the mounting groove.

[0020] Preferably, the coil spring has a bellows covering its arc surface, and the two ends of the bellows are rotatably connected to an auxiliary ring and an adjusting ring, respectively.

[0021] The effect achieved by the above components is that the bellows can protect the coil spring, prevent other substances from coming into direct contact with the coil spring, and help to extend the service life of the coil spring.

[0022] Preferably, a guide block is fixedly connected to the end of the positioning rod away from the fixing block, and the end of the guide block away from the fixing block is arc-shaped.

[0023] The effect achieved by the above components is that the guide block can guide the positioning rod, making it easy for personnel to slide the positioning rod into the inner wall of the positioning block.

[0024] Preferably, the upper surfaces of the three support plates are provided with a limiting structure, the limiting structure including three connecting grooves and six positioning posts. The three connecting grooves are respectively opened on the three support plates, and the six positioning posts are respectively fixedly connected to the three support plates. Positioning plates are slidably connected to the inner walls of the connecting grooves. The three positioning plates are fixedly connected to the base plate. Positioning grooves are opened on the inner walls of the positioning plates. Adjusting plates are slidably connected to the inner walls of the positioning grooves. Two auxiliary grooves are opened on the inner walls of the adjusting plates. The auxiliary grooves are slidably connected to the positioning posts. A lead rod is threadedly connected to the inner wall of the adjusting plate. The lead rod is movably connected to the support plate.

[0025] The effect achieved by the above components is as follows: when personnel need to fix the settling tank to the base plate, they can move the settling tank until the three positioning plates slide into the inner walls of the three connecting slots respectively. Then, the personnel can rotate the three adjusting plates and the three lead screws until the adjusting plates slide into the inner walls of the positioning slots and the lead screws slide into the inner walls of the support plates. This allows personnel to quickly and easily fix the settling tank to the base plate, improving their work efficiency.

[0026] Compared with related technologies, the methanol washing crystallization inhibition device provided by the present invention has the following beneficial effects: This invention provides a methanol washing crystallization inhibition device. By setting a docking structure, when personnel need to connect and install the connecting pipe to the input pipe for use, the docking structure can facilitate personnel to quickly connect and install the connecting pipe, thereby improving the personnel's docking and installation efficiency.

[0027] By setting up a fixed structure, when personnel need to inspect the interior of the settling tank through the inspection pipe, the fixed structure allows for quick and easy disassembly of the baffles, thereby speeding up the disassembly process and improving maintenance efficiency.

[0028] By setting a limiting structure, when personnel need to fix the settling tank to the base plate, the limiting structure can facilitate the personnel to fix the settling tank to the base plate quickly and easily, thereby speeding up the fixation speed of the settling tank and improving the personnel's work efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a methanol washing crystallization inhibition device provided by the present invention; Figure 2 for Figure 1 The diagram shows the structural schematic of the docking structure. Figure 3 for Figure 2 The diagram shows the structure of the split structure. Figure 4 for Figure 1The diagram shows the structure of the fixed structure. Figure 5 for Figure 4 The diagram shows a partial structural representation of the structure. Figure 6 for Figure 5 A schematic diagram of the enlarged structure at point A shown; Figure 7 for Figure 4 The diagram shows a partial structural representation of the structure. Figure 8 for Figure 1 The diagram shows the structure of the limiting structure.

[0030] Numbered in the diagram: 1. Base plate; 2. Settling tank; 3. Docking structure; 301. Rotating ring; 302. Rotating rod; 303. Fixed ring; 304. Connecting plate; 305. Limiting groove; 306. Connecting plate; 307. Limiting ring; 308. Sealing gasket; 309. Fixed plate; 310. Moving ring; 311. Limiting tube; 4. Fixed structure; 401. Auxiliary ring; 402. Bellows; 403. Adjusting ring; 404. Fixed block; 405. Positioning block; 40 6. Connecting ring; 407. Positioning rod; 408. Locking block; 409. Mounting groove; 410. Coil spring; 411. Guide block; 412. Leak-proof pad; 5. Limiting structure; 51. Positioning plate; 52. Positioning post; 53. Auxiliary groove; 54. Screw rod; 55. Adjusting plate; 56. Connecting groove; 57. Positioning groove; 6. Connecting pipe; 7. Input pipe; 8. Discharge pipe; 9. Support plate; 10. Inspection pipe; 11. Baffle; 12. Discharge pipe; 13. Connecting pipe. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0033] Please see Figure 1The present invention provides a methanol washing crystallization inhibition device, comprising: a base plate 1, a docking structure 3, and a fixing structure 4. Three support plates 9 are provided on the upper surface of the base plate 1. A settling tank 2 is installed on the side of the three support plates 9 that are close to each other. An input pipe 7, a discharge pipe 8, a maintenance pipe 10, a discharge pipe 12, and a connecting pipe 13 are installed inside the settling tank 2. A connecting pipe 6 is installed on the side of the input pipe 7 away from the settling tank 2 by means of the docking structure 3. A baffle 11 is installed on the side of the maintenance pipe 10 away from the settling tank 2 by means of the fixing structure 4. The arc surface of the input pipe 7 is provided with the docking structure 3, and the arc surface of the maintenance pipe 10 is provided with the fixing structure 4. A limiting structure 5 is provided on the upper surface of the three support plates 9.

[0034] In an embodiment of the present invention, please refer to Figure 2 and Figure 3 The docking structure 3 includes a rotating ring 301 and a fixed ring 303. The rotating ring 301 is threadedly connected to the input pipe 7, and the fixed ring 303 is fixedly connected to the docking pipe 6. A movable ring 310 is rotatably connected to the side of the rotating ring 301 near the fixed ring 303. The movable ring 310 is slidably connected to the input pipe 7. Two fixed plates 309 are fixedly connected to the arc surface of the movable ring 310. A limit groove 305 is opened on the inner wall of the fixed plate 309. Two connecting plates 304 are fixedly connected to the arc surface of the fixed ring 303. A connecting plate 306 is fixedly connected to the side of the connecting plate 304 near the movable ring 310. The connecting plate 306 is slidably connected to the limit groove 305. When personnel need to connect and install the connecting pipe 6 onto the input pipe 7, they can move the connecting pipe 6 to allow the connecting plate 306 to slide into the inner wall of the limiting groove 305. Then, the personnel can rotate the rotating ring 301 until the connecting pipe 6 and the input pipe 7 are in contact, facilitating quick and easy installation and improving efficiency. A limiting tube 311 is fixedly connected to the inner wall of the connecting pipe 6, and the limiting tube 311 is slidably connected to the input pipe 7. The limiting tube 311 limits the connection of the connecting pipe 6, improving its stability during use. Several rotating rods 302 are fixedly connected to the arc surface of the rotating ring 301, evenly distributed on its surface. The rotating rods 302 facilitate rotation of the rotating ring 301, enhancing ease of operation. A sealing gasket 308 is fixedly connected to the side of the connecting pipe 6 closest to the input pipe 7, and the sealing gasket 308 abuts against the input pipe 7. The sealing gasket 308 increases the seal between the connecting pipe 6 and the input pipe 7, preventing methanol from leaking out between them. A limiting ring 307 is fixedly connected to the arc-shaped surface of the input pipe 7. The side of the limiting ring 307 away from the moving ring 310 is flush with the side of the input pipe 7 closest to the connecting pipe 6. The limiting ring 307 limits the movement of the moving ring 310, preventing accidental excessive rotation of the rotating ring 301 and subsequent detachment of the moving ring 310 from the surface of the input pipe 7. In an embodiment of the present invention, please refer to Figures 4 to 7 The fixing structure 4 includes a connecting ring 406, four fixing blocks 404, a leak-proof pad 412, and four positioning blocks 405. The connecting ring 406 is rotatably connected to the inspection pipe 10. The four fixing blocks 404 are fixedly connected to the baffle 11. The four positioning blocks 405 are fixedly connected to the inspection pipe 10. The leak-proof pad 412 abuts against the inspection pipe 10. Four locking blocks 408 are fixedly connected to the arc surface of the connecting ring 406. A positioning rod 407 is fixedly connected to the side of the fixing block 404 near the positioning block 405. The positioning rod 407 is slidably connected to the positioning block 405. An installation groove 409 is opened on the inner wall of the positioning rod 407. The installation groove 409 is slidably connected to the locking block 408. When personnel need to inspect the interior of the settling tank 2 through the inspection pipe 10, they can first rotate the connecting ring 406 until the locking block 408 slides out of the inner wall of the mounting groove 409. Then, the personnel can move the baffle 11 until the positioning rod 407 slides out completely from the inner wall of the positioning block 405. This allows for quick and easy disassembly of the baffle 11, improving the efficiency of the inspection. An adjusting ring 403 is fixedly connected to the side of the connecting ring 406 away from the positioning block 405. The adjusting ring 403 is rotatably connected to the inspection pipe 10. A coil spring 410 is provided on the side of the adjusting ring 403 away from the connecting ring 406. One end of the coil spring 410 is fixedly connected to the adjusting ring 403, and the other end of the coil spring 410 is fixedly connected to an auxiliary ring 401. The auxiliary ring 401 is fixedly connected to the inspection pipe 10. The coil spring 410 and adjusting ring 403 limit the movement of the connecting ring 406, preventing it from rotating during use and causing the locking block 408 to slide out of the inner wall of the mounting groove 409. A bellows 402 is fitted over the arc-shaped surface of the coil spring 410, with both ends of the bellows 402 rotatably connected to the auxiliary ring 401 and adjusting ring 403, respectively. The bellows 402 protects the coil spring 410, preventing direct contact with other substances and extending its service life. A guide block 411 is fixedly connected to the end of the positioning rod 407 furthest from the fixed block 404, and this end is arc-shaped. The guide block 411 guides the positioning rod 407, facilitating its sliding into the inner wall of the positioning block 405. In an embodiment of the present invention, please refer to Figure 8The limiting structure 5 includes three connecting grooves 56 and six positioning pins 52. The three connecting grooves 56 are respectively opened on three support plates 9, and the six positioning pins 52 are respectively fixedly connected to the three support plates 9. The inner wall of the connecting groove 56 is slidably connected to a positioning plate 51. The three positioning plates 51 are fixedly connected to the base plate 1. The inner wall of the positioning plate 51 is provided with a positioning groove 57. The inner wall of the positioning groove 57 is slidably connected to an adjusting plate 55. The inner wall of the adjusting plate 55 is provided with two auxiliary grooves 53. The auxiliary grooves 53 are slidably connected to the positioning pins 52. The inner wall of the adjusting plate 55 is threadedly connected to a lead rod 54. The lead rod 54 is movably connected to the support plate 9. When personnel need to fix the settling tank 2 to the base plate 1, they can move the settling tank 2 until the three positioning plates 51 slide into the inner walls of the three connecting grooves 56 respectively. Then, the personnel can rotate the three adjusting plates 55 and the three lead screws 54 until the adjusting plates 55 slide into the inner walls of the positioning grooves 57 and the lead screws 54 slide into the inner walls of the support plate 9. This allows personnel to quickly and easily fix the settling tank 2 to the base plate 1, improving their work efficiency.

[0035] The working principle of the methanol washing crystallization inhibition device provided by this invention is as follows: When personnel need to inhibit methanol crystallization, they can first move the connecting pipe 6. The connecting pipe 6 drives the two connecting plates 304, the sealing gasket 308, and the limiting tube 311 to move closer to the input pipe 7. The sealing gasket 308 can increase the sealing between the connecting pipe 6 and the input pipe 7, preventing methanol from seeping out from between the connecting pipe 6 and the input pipe 7. The limiting tube 311 can limit the connecting pipe 6, improving the stability of the connecting pipe 6 during use. Then, the connecting plate 304 drives the connecting plate 306 to move closer to the limiting groove 305 until the two connecting plates 306 slide into the inner wall of the limiting groove 305 respectively. At this time, the limiting tube 311 corresponds to the input pipe 7. Then, the personnel use the rotating rod 302 to drive the rotating ring 301 to rotate. The rotating rod 302 facilitates the rotation of the rotating ring 301 and helps to lift the personnel. To improve ease of operation, the rotating ring 301 drives the moving ring 310 to move away from the limiting ring 307. The limiting ring 307 can limit the moving ring 310, preventing personnel from accidentally over-rotating the rotating ring 301 and causing the moving ring 310 to detach from the surface of the input pipe 7. Then, the moving ring 310 drives the two fixed plates 309 to move away from the limiting ring 307. The fixed plates 309 drive the connecting plate 306 to move closer to the settling tank 2 until the sealing gasket 308 abuts against the input pipe 7. At this time, the limiting pipe 311 slides into the inner wall of the input pipe 7. Then, the personnel put the sulfur-containing methanol into the interior of the settling tank 2 through the connecting pipe 6 and the input pipe 7. The baffle plate inside the settling tank 2 slows down the flow speed of the methanol. At this time, the sulfur crystals will quickly sink into the interior of the discharge pipe 12 due to gravity. Then, the removed clean methanol will return to the main process system from the connecting pipe 13. Then, the crystallized waste liquid can be discharged quantitatively through the discharge pipe 8.

[0036] Additionally, when personnel need to inspect the interior of the settling tank 2 through the inspection pipe 10, they can first rotate the adjusting ring 403. The adjusting ring 403 drives the connecting ring 406 to rotate, and the adjusting ring 403 also drives the coil spring 410 to coil up. The coil spring 410 and the connecting ring 406 can limit the connecting ring 406, preventing it from rotating on its own during use and causing the locking block 408 to slide out of the inner wall of the mounting groove 409. Then, the connecting ring 406 drives the four locking blocks 408 to rotate away from the mounting groove 409 until the locking blocks 408 completely slide out of the inner wall of the mounting groove 409. Then, the personnel move the baffle 11, which drives the four fixed blocks 408 to rotate away from the mounting groove 409. The fixed block 404 and the leak-proof pad 412 move away from the adjusting ring 403. The fixed block 404 drives the positioning rod 407 to move away from the positioning block 405. The positioning rod 407 drives the guide block 411 to move away from the positioning block 405 until the guide block 411 and the positioning rod 407 completely slide out of the inner wall of the positioning block 405. The guide block 411 can guide the positioning rod 407, making it easy for personnel to slide the positioning rod 407 into the inner wall of the positioning block 405. The bellows 402 on the arc surface of the coil spring 410 can protect the coil spring 410, preventing other substances from directly contacting the coil spring 410 and helping to extend the service life of the coil spring 410.

[0037] In addition, when personnel need to fix the settling tank 2 to the base plate 1, they can first move the settling tank 2. The settling tank 2 drives the three support plates 9 to move closer to the base plate 1. The support plates 9 drive the two positioning columns 52 to move closer to the base plate 1 until the three positioning plates 51 slide into the inner walls of the three connecting grooves 56 respectively. At this time, the support plates 9 and the base plate 1 are in contact. Then, the personnel move the three adjusting plates 55. The adjusting plates 55 drive the lead screw 54 to move closer to the positioning groove 57. At this time, the positioning column 52 slides on the inner wall of the auxiliary groove 53 until the adjusting plate 55 slides into the inner wall of the positioning groove 57. Then, the personnel rotate the lead screw 54 until the lead screw 54 slides into the inner wall of the support plate 9.

[0038] The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.

[0039] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A methanol washing crystallization inhibition device, characterized in that, include: The base plate (1), the docking structure (3) and the fixing structure (4) are provided. Three support plates (9) are provided on the upper surface of the base plate (1). A settling tank (2) is installed on the side of the three support plates (9) that are close to each other. An inlet pipe (7), a outlet pipe (8), an inspection pipe (10), a discharge pipe (12) and a connecting pipe (13) are installed inside the settling tank (2). A connecting pipe (6) is installed on the side of the inlet pipe (7) away from the settling tank (2) by means of the docking structure (3). A baffle (11) is installed on the side of the inspection pipe (10) away from the settling tank (2) by means of the fixing structure (4). The arc surface of the inlet pipe (7) is provided with the docking structure (3).

2. The methanol washing crystallization inhibition device according to claim 1, characterized in that, The docking structure (3) includes a rotating ring (301) and a fixed ring (303). The rotating ring (301) is threadedly connected to the input pipe (7), and the fixed ring (303) is fixedly connected to the docking pipe (6). A movable ring (310) is rotatably connected to the side of the rotating ring (301) near the fixed ring (303). The movable ring (310) is slidably connected to the input pipe (7). Two fixed plates (309) are fixedly connected to the arc surface of the movable ring (310). The inner wall of the fixed plate (309) is provided with a limiting groove (305). The arc surface of the fixed ring (303) is fixedly connected to two connecting plates (304). The connecting plate (304) is fixedly connected to a connecting plate (306) on the side near the moving ring (310). The connecting plate (306) is slidably connected to the limiting groove (305). The inner wall of the connecting pipe (6) is fixedly connected to a limiting tube (311). The limiting tube (311) is slidably connected to the input pipe (7).

3. The methanol washing crystallization inhibition device according to claim 2, characterized in that, The circular arc surface of the rotating ring (301) is fixedly connected to a number of rotating rods (302), and the number of rotating rods (302) are evenly distributed on the circular arc surface of the rotating ring (301).

4. The methanol washing crystallization inhibition device according to claim 1, characterized in that, A sealing gasket (308) is fixedly connected to the side of the connecting pipe (6) near the input pipe (7), and the sealing gasket (308) abuts against the input pipe (7).

5. The methanol washing crystallization inhibition device according to claim 2, characterized in that, The arc surface of the input tube (7) is fixedly connected to a limiting ring (307), and the side of the limiting ring (307) away from the moving ring (310) is flush with the side of the input tube (7) close to the connecting tube (6).

6. The methanol washing crystallization inhibition device according to claim 1, characterized in that, The arc surface of the inspection pipe (10) is provided with a fixing structure (4). The fixing structure (4) includes a connecting ring (406), four fixing blocks (404), a leak-proof pad (412), and four positioning blocks (405). The connecting ring (406) is rotatably connected to the inspection pipe (10). The four fixing blocks (404) are fixedly connected to the baffle (11). The four positioning blocks (405) are fixedly connected to the inspection pipe (10). The leak-proof pad (412) abuts against the inspection pipe (10). The arc surface of the connecting ring (406) is fixedly connected with four locking blocks (408). The side of the fixing block (404) near the positioning block (405) is fixedly connected with a positioning rod (407). The positioning rod (407) is slidably connected to the positioning block (405). The inner wall of the positioning rod (407) is provided with an installation groove (409). The installation groove (409) is slidably connected to the locking block (408).

7. The methanol washing crystallization inhibition device according to claim 6, characterized in that, An adjusting ring (403) is fixedly connected to the side of the connecting ring (406) away from the positioning block (405). The adjusting ring (403) is rotatably connected to the inspection tube (10). A coil spring is provided on the side of the adjusting ring (403) away from the connecting ring (406). One end of the coil spring (410) is fixedly connected to the adjusting ring (403). An auxiliary ring (401) is fixedly connected to the other end of the coil spring (410). The auxiliary ring (401) is fixedly connected to the inspection tube (10).

8. The methanol washing crystallization inhibition device according to claim 7, characterized in that, The coil spring has a bellows (402) fitted on its arc surface, and the two ends of the bellows (402) are rotatably connected to the auxiliary ring (401) and the adjusting ring (403) respectively.

9. The methanol washing crystallization inhibition device according to claim 6, characterized in that, The positioning rod (407) is fixedly connected to a guide block (411) at the end away from the fixing block (404), and the end of the guide block (411) away from the fixing block (404) is arc-shaped.

10. The methanol washing crystallization inhibition device according to claim 1, characterized in that, The upper surface of the three support plates (9) is provided with a limiting structure (5). The limiting structure (5) includes three connecting grooves (56) and six positioning posts (52). The three connecting grooves (56) are respectively opened on the three support plates (9). The six positioning posts (52) are respectively fixedly connected to the three support plates (9). The inner wall of the connecting groove (56) is slidably connected to a positioning plate (51). The three positioning plates (51) are fixedly connected to the bottom plate (1). The inner wall of the positioning plate (51) is provided with a positioning groove (57). The inner wall of the positioning groove (57) is slidably connected to an adjusting plate (55). The inner wall of the adjusting plate (55) is provided with two auxiliary grooves (53). The auxiliary grooves (53) are slidably connected to the positioning posts (52). The inner wall of the adjusting plate (55) is threadedly connected to a lead screw (54). The lead screw (54) is movably connected to the support plate (9).

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