A purification device for natural gas to methanol

Abstract

The application provides a purification device for methanol production from natural gas, which comprises a purification box, the inside of which is divided into a filtering cavity, a purification cavity A and a purification cavity B; the inside of the filtering cavity is provided with a gas filtering assembly, the gas filtering assembly comprises multiple groups of filtering plates A arranged at equal intervals, the inside of the purification cavity A is provided with a collecting hopper, the bottom of the purification cavity A is provided with a treatment box communicated with the collecting hopper, the inside of the treatment box is provided with a dispersion plate, the bottom of the treatment box is provided with a collecting box, and the inside of the collecting box is provided with a liquid filtering assembly; the inside of the filtering cavity is communicated with the inside of the treatment box through a gas guiding assembly, the purification cavity A and the purification cavity B are communicated through a gas passing pipe group, the inside of the purification cavity A and the inside of the purification cavity B are both provided with a spraying assembly, and the inside of the purification cavity B and the inside of the collecting box are communicated through a liquid inlet pipe. The gas is filtered and then purified twice, and the gas is dispersed in the purification process, so that the mixing effect of the gas and the spraying liquid is improved, and the purification effect of the harmful impurities in the gas is improved.

Description

Technical Field

[0001] This invention relates to the field of methanol production technology from natural gas, and more particularly to a purification device for methanol production from natural gas. Background Technology

[0002] Natural gas is the main raw material for methanol production. The main component of natural gas is methane, and it also contains small amounts of other alkanes, alkenes, and nitrogen. Methods for producing methanol from natural gas include steam reforming, catalytic partial oxidation, and non-catalytic partial oxidation. Among these, steam reforming is the most widely used. It is carried out in a tubular furnace under atmospheric or pressurized conditions. Because the reaction is endothermic, external heating is necessary to maintain the required reforming temperature. This is generally achieved by burning a certain fuel gas between the tubes. The steam used for reforming is directly produced on-site by the heat from the flue gas and the reformed gas.

[0003] Because the syngas produced by the natural gas steam reforming method contains an excess of hydrogen and an insufficient amount of carbon monoxide and carbon dioxide, industrial solutions to this problem include two approaches. One is to use a steam reforming method with added carbon dioxide to achieve a suitable ratio. The carbon dioxide can be supplied externally or recovered from the flue gas of the reformer. The other approach is a two-stage reforming method using natural gas as feedstock. In the first stage, natural gas undergoes steam reforming, with only about 1 / 4 of the methane reacting. This not only results in a suitable syngas ratio but also reduces the amount of residual methane due to the increased reaction temperature in the second stage (above 800°C), thus increasing the effective gaseous components for methanol synthesis.

[0004] Before entering the steam reformer, natural gas needs to be purified to remove harmful impurities. The purified gas must have a low sulfur content so that it can be compressed and sent to the synthesis section to synthesize methanol. Therefore, we propose a purification device for natural gas to methanol production to address these issues. Summary of the Invention

[0005] In view of the problems existing in the existing technical solutions, the purpose of this invention is to provide a purification device for methanol production from natural gas.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A purification device for methanol production from natural gas, comprising:

[0008] The purification chamber is internally divided into a filter chamber, purification chamber A, and purification chamber B by two partitions.

[0009] The filter chamber is equipped with a gas filtration assembly, which includes multiple sets of equally spaced filter plates A, and each filter plate A includes two filter unit plates.

[0010] The purification chamber A has a collection hopper inside, and a processing box connected to the collection hopper is located at the bottom of the purification chamber A. The processing box contains a dispersion plate, and the collection box contains a liquid filtration assembly. The filtration chamber is connected to the processing box via an air intake assembly. The air intake assembly includes a connecting hopper connected to the bottom of the purification box and communicating with the inside of the filtration chamber via a flange. An air inlet pipe A is connected to the bottom of the connecting hopper via the flange. An exhaust fan is located at the end of the air inlet pipe A away from the connecting hopper, and an air inlet pipe B is connected to the exhaust fan away from the air inlet pipe A. The end of the air inlet pipe B away from the exhaust fan extends to the bottom of the processing box and is equipped with a gas dispersion assembly. The gas dispersion assembly includes an upper ball cover and a lower ball cover connected together by threads. Gas dispersion holes are evenly distributed through the surfaces of the upper ball cover and the top of the upper ball cover is fixed with a connecting ring threaded to the air inlet pipe B. A positioning rod is threaded to the bottom of the lower ball cover, and a dispersion fan located inside the lower ball cover is rotatably mounted on the surface of the positioning rod.

[0011] Purification chamber A and purification chamber B are connected by an air-transfer pipe assembly, and both purification chamber A and purification chamber B are equipped with spray components. Purification chamber B is connected to the inside of the collection box by a liquid inlet pipe.

[0012] As a further improvement to this solution, the collection hopper and the treatment box are fixed together by a disassembly assembly A, which includes an extended loop block A and an extended loop block B. The extended loop block A is located at the bottom of the purification box, and the extended loop block B is located on both sides of the treatment box and corresponds to the extended loop block A. The extended loop block A and the extended loop block B are positioned and connected by a U-shaped block.

[0013] As a further improvement to this solution, a collection box is provided at the bottom of the processing box via a disassembly and assembly component B. The disassembly and assembly component B includes a fixing block A and a sealing ring. The fixing block A is fixedly installed on both sides of the processing box and is relatively far away from the extended U-shaped block B. The sealing ring is rectangular and is fixedly installed on the top of the collection box. The sealing ring has concave blocks on both sides that are fixedly connected to the top of the collection box. Positioning blocks are inserted into the fixing block and the concave blocks.

[0014] As a further improvement to this solution, the positioning block includes a vertical part, and a horizontal part A, a horizontal part B and a horizontal part C are provided sequentially from top to bottom on one side of the vertical part. The horizontal part A is located at the top of the fixed block, the horizontal part B is located between the fixed block and the concave block, and the horizontal part C is located in the groove of the concave block.

[0015] As a further improvement to this solution, the purification box is located on one side of the filter chamber and is connected to a venturi tube via a flange.

[0016] As a further improvement to this solution, the gas filtration assembly is fixed inside the filtration chamber by a limiting assembly. An installation port A, communicating with the filtration chamber, is opened on the top of the purification chamber for inserting the filter plate A into it. The limiting assembly includes a T-block and a limiting rod. The T-block passes through the top of the purification chamber, and a sliding groove is opened on the top of the T-block. A slider is provided within the groove, and a locking hole is opened on the top of the slider. A locking block is fixed at the bottom of the limiting rod, engaging with the locking hole. When the filter plate A is inserted into the filtration chamber, the T-block passes through the fixing part of the filter plate A, and the locking block and the locking hole are engaged. A folding block is fixed at one end of the limiting rod, and the folding block is connected to the top of the purification chamber by bolts.

[0017] As a further improvement to this solution, the liquid filtration assembly includes a reinforcing block, and filter plates B are provided at both the upper and lower positions on one side of the reinforcing block. The filter plates B are inserted into the collection box through the mounting port B.

[0018] As a further improvement to this solution, the air passage assembly includes an air passage connecting the purification chamber A and the purification chamber B, and one end of the air passage connecting to the purification chamber B is provided with an air guide tube that extends to the bottom of the interior of the purification chamber B.

[0019] As a further improvement to this solution, the spray assembly includes a T-shaped filling pipe that communicates with an external spraying device, and both ends of the T-shaped filling pipe are provided with H-shaped spray pipes that extend to the top of the purification chamber A and the purification chamber B respectively. The surface of the spray pipe is provided with spray holes.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In the natural gas-to-methanol process of this invention, the gas generated sequentially passes through a venturi tube, a gas filter assembly in the filter chamber, and an air intake assembly before entering the processing tank. In conjunction with a spray assembly, the gas undergoes initial purification in purification chamber A to remove harmful impurities. The gas, after initial purification, sequentially passes through a gas transfer pipe assembly and purification chamber B, where it undergoes further purification in purification chamber B with the help of the spray assembly, before being discharged from the exhaust pipe. The gas is then discharged into the steam reformer. The liquid carrying harmful impurities from purification chambers A and B enters the collection tank through the inlet pipe, where it is finally filtered and discharged through a drain pipe connected to the collection tank. Therefore, during use, harmful impurities (including sulfur) generated during the natural gas-to-methanol process can be filtered and purified, effectively reducing the impact of the discharged gas on the external environment and further protecting the environment.

[0022] 2. In the process of purifying the gas, the present invention can better disperse the gas and improve the mixing of the gas and the spray liquid, thereby improving the purification effect of the spray liquid on substances in the gas that affect the external environment.

[0023] 3. In this invention, the filtration structure and purification structure, as well as the purification box, treatment box and collection box, are easy to disassemble and assemble, thus providing convenience for assembly and disassembly. Attached Figure Description

[0024] The invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is an axial view of a purification device for methanol production from natural gas, as proposed in this invention.

[0026] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below;

[0027] Figure 3 for Figure 1 Layout diagram of the middle limit component;

[0028] Figure 4 for Figure 3 A schematic diagram of the structure viewed from below;

[0029] Figure 5 for Figure 2 A schematic diagram of the structure of the dismantling and processing box and the collection box from below;

[0030] Figure 6 for Figure 2 A top view of the intermediate processing box and the collection box;

[0031] Figure 7 for Figure 5 Cross-sectional view;

[0032] Figure 8 for Figure 6 A breakdown diagram of the processing tank and the collection tank;

[0033] Figure 9 for Figure 8 Cross-sectional view;

[0034] Figure 10 for Figure 9 A schematic diagram of the structure of the central air intake assembly.

[0035] The diagram shows the following components: 1. Purification box; 2. Venturi tube; 3. Mounting port A; 4. Filter plate A; 5. Slider; 6. Slide groove; 7. Locking hole; 8. Limiting rod; 9. Locking block; 10. Folding block; 11. Divider plate; 12. Connecting hopper; 13. Air inlet pipe A; 14. Exhaust fan; 15. Air inlet pipe B; 16. Air dissipation assembly; 1610. Upper ball cover; 1620. Connecting ring; 1630. Lower ball cover; 1640. Positioning rod. 1650. Dispersion fan; 17. Collection hopper; 18. Extended U-shaped block A; 19. Processing box; 20. Extended U-shaped block B; 21. U-shaped block; 22. Dispersion plate; 23. Fixing block A; 24. Collection box; 25. Sealing ring; 26. Concave block; 27. Mounting port B; 28. Filter plate B; 29. ​​Liquid inlet pipe; 30. Positioning block; 31. Air passage pipe; 32. Air guide pipe; 33. Liquid filling pipe; 34. Spray pipe. Detailed Implementation

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] Example 1

[0038] Reference Figure 1-10 This embodiment of a purification device for methanol production from natural gas includes an L-shaped purification chamber 1. The purification chamber 1 is divided into a filter chamber, a purification chamber A, and a purification chamber B by two partition plates 11. One end of the purification chamber 1 is provided with a venturi tube 2 that communicates with the filter chamber via a flange. The venturi tube 2 can enhance the impact force during air intake. A gas filter assembly is provided inside the filter chamber via a limiting component. A collection hopper 17 is provided inside the purification chamber A. A processing box 19 is provided at the bottom of the purification chamber A via a disassembly assembly A that communicates with the collection hopper 17. A dispersion plate 22 is provided inside the processing box 19. Several through holes are uniformly perforated on the surface of the dispersion plate 22 to allow gas to pass through. A collection box 24 is provided at the bottom of the processing box 19 via a disassembly assembly B. A liquid filter assembly is provided inside the collection box 24. The filter chamber is connected to the processing box 19 via a gas priming component. The purification chamber A and the purification chamber B are connected by a gas transfer pipe assembly. The purification chamber A and the purification chamber B are provided with the same spray assembly. The purification chamber B and the collection box 24 are connected by a liquid inlet pipe 29.

[0039] As described above, during operation, the venturi tube 2 is connected to the gas discharge port of the natural gas to methanol equipment. The induced draft assembly draws in gas generated during the natural gas to methanol process, drawing it through the venturi tube 2 into the filter chamber. After being filtered by the gas filter assembly, the gas then enters the processing chamber 19 through the induced draft assembly. From there, it rises from the bottom of the processing chamber 19. Simultaneously, the spray assembly sprays downwards from the part inside the purification chamber A to perform the initial gas purification. During this process, the gas to be purified mixes and reacts with the spray liquid. Harmful impurities fall with the liquid. The gas that has undergone the initial purification rises and enters the purification chamber B through the gas transfer pipe assembly, then rises from the bottom. Simultaneously, the spray assembly... The gas inside the purification chamber B is sprayed downwards and further purified. The purified gas in the purification chamber B is discharged through the exhaust pipe located at the top of the purification box 1, which is connected to the purification chamber B. The exhaust pipe is connected to the steam reformer, so the gas is discharged into the steam reformer. At the same time, the liquid sprayed down from the purification chamber B and carrying harmful impurities enters the collection box 24 through the liquid inlet pipe 29. In addition, the liquid sprayed down from the purification chamber A and carrying harmful impurities also enters the collection box 24 through the treatment box 19. The liquid carrying harmful impurities is filtered inside the collection box 24 and then discharged through the drain pipe connected to the collection box 24.

[0040] See you later Figure 3 , Figure 4 The gas filtration assembly includes multiple sets of filter plates A4, wherein the pore size of the multiple sets of filter plates A4 decreases sequentially along the direction away from the venturi tube 2. Each filter plate A4 includes two filter unit plates, which are designed to facilitate the replacement of different filter plates A4 by first removing one old filter unit from each filter plate A4, leaving the other old filter unit to continue filtering, and then replacing it with a new filter unit while removing the other old filter unit and replacing it with the corresponding new filter unit. This ensures that the normal filtering function of each filter plate A4 is not affected during use. A fixing ring is fixedly provided at the top center of the filter plate A4 for matching with the limiting component.

[0041] See Figure 7 The air intake assembly includes a connecting hopper 12 connected to the bottom of the purification chamber 1 via a flange and communicating with the inside of the filter chamber. The bottom of the connecting hopper 12 is connected to an air inlet pipe A13 via a flange. An exhaust fan 14 is provided at the end of the air inlet pipe A13 away from the connecting hopper 12. The exhaust fan 14 is existing technology and will not be described in detail here. An air inlet pipe B15 is connected at the position of the exhaust fan 14 away from the air inlet pipe A13. The end of the air inlet pipe B15 away from the exhaust fan 14 extends to the bottom of the inside of the processing chamber 19 and is provided with an air dissipation assembly 16.

[0042] See Figure 9 , Figure 10The air dispersion assembly 16 includes an upper ball cover 1610 and a lower ball cover 1630 connected together by threads. Air dispersion holes are uniformly penetrated on the surfaces of the upper ball cover 1610 and the lower ball cover 1630. A connecting ring 1620 that is threadedly connected to the air intake pipe B15 is fixedly provided on the top of the upper ball cover 1610. A positioning rod 1640 is threadedly connected to the bottom of the lower ball cover 1630, and a dispersion fan 1650 located inside the lower ball cover 1630 is rotatably provided on the surface of the positioning rod 1640.

[0043] When the air intake assembly and the air dispersing assembly 16 are in use, the exhaust fan 14 draws gas from inside the filter chamber through the air intake pipe A13 and the connecting bucket 12, and then enters the air dispersing assembly through the air intake pipe B15. When the gas rushes out from the bottom of the air intake pipe B15 and blows onto the dispersing fan 1650, the dispersing fan 1650 rotates on the surface of the positioning rod 1640. The rotating dispersing fan 1650 causes the gas to be dispersed from the upper ball cover 1610 and the lower ball cover 1630 through the air dispersing holes, and then disperses upward through the two dispersing plates 22 in sequence, preventing the gas from directly rushing into the treatment box 19 and making it difficult to fully contact and react with the spray liquid.

[0044] See you later Figure 3 , Figure 4 The limiting assembly includes an installation port A3 located on the top of the purification chamber 1 and connected to the filter chamber for inserting the filter plate A4 into the filter chamber; a T-shaped block located on the top of the purification chamber 1, with a slider 5 located on the top of the T-shaped block via a sliding groove 6; a locking hole 7 located on the top of the slider 5; a limiting rod 8, with a locking block 9 fixedly attached to the bottom of the limiting rod 8 to engage with the locking hole 7; and a folding block 10 fixedly attached to one end of the limiting rod 8, which is connected to the top of the purification chamber 1 by bolts. When installing the filter plate A4, the operator inserts the filter plate A4 through the installation port A3. The slide block 5 is then slidably mounted on the T-shaped block via the slide groove 6 into the filter chamber. The slide block 5 is then moved along the T-shaped block and inserted into the fixing ring. The limiting rod 8 is then removed and the locking block 9 at the bottom of the limiting rod 8 is inserted into the locking hole 7. Finally, the folding block 10 is connected to the top of the purification box 1 by bolts. This prevents the limiting rod 8 from detaching, prevents the slide block 5 from moving, and prevents the filter plate A4 from loosening or even detaching from the installation port A3. This facilitates the filtration of the gas after it enters the filter chamber through the venturi tube 2 before it enters the filter assembly.

[0045] The liquid filtration assembly includes a reinforcing block, and filter plates B28 are provided at the top and bottom positions on one side of the reinforcing block. The filter plates B28 are inserted into the collection box 24 through the mounting port B27. Then the reinforcing block is connected to the collection box 24 by screws to prevent the filter plates B28 from detaching from the collection box 24. The spray liquid flowing into the collection box 24 can be filtered through the filter plates B28.

[0046] The air passage assembly includes an air passage 31 that connects purification chamber A and purification chamber B. One end of the air passage 31 that connects to purification chamber B is provided with an air guide 32 that extends to the bottom of the purification chamber B. This allows the gas that has been purified once to rise in purification chamber A to enter the bottom of the purification chamber B through the air passage 31 and the air guide 32 and then rise again.

[0047] The spray assembly includes a T-shaped filling pipe 33 that is connected to an external spraying device. Both ends of the T-shaped filling pipe 33 are provided with H-shaped spray pipes 34 that extend to the top of the purification chamber A and the purification chamber B, respectively. The surface of the spray pipes 34 is provided with spray holes. Spray liquid is filled into the T-shaped filling pipe 33 by the external spraying device, and then sprayed out from the spray holes on the surfaces of the two H-shaped spray pipes 34 into the gas in the two purification chambers and mixed with the gas to purify harmful impurities in the gas.

[0048] Example 2

[0049] This embodiment is basically the same as embodiment 1 in structure. The difference is that this embodiment discloses the specific structure of the disassembly and assembly component A based on embodiment 1. The disassembly and assembly component A includes an extended loop block A18 and an extended loop block B20. The extended loop block A18 is set at the bottom of the purification box 1. Specifically, the bottom of the purification box 1 is connected to the bottom of the collection hopper 17. The extended loop block A18 is located on both sides of the connection position. The extended loop block B20 is set on both sides of the processing box 19 and corresponds to the extended loop block A18. The extended loop block A18 and the extended loop block B20 are positioned and inserted by U-shaped block 21.

[0050] When connecting the treatment box 19 to the bottom of the purification box 1, the operator aligns the top of the treatment box 19 with the bottom of the purification box 1 and connects it to the bottom of the collection hopper 17. At the same time, the extended loop block A18 and the extended loop block B20 are brought into contact. Then, the U-shaped block 21 is inserted into the gap between the extended loop block A18 and the extended loop block B20, and the extended loop block A18, the extended loop block B20, and the U-shaped block 21 are connected together with bolts. This connects the bottom of the treatment box 19 to the bottom of the purification box 1, making it easier for the spray liquid to fall into the treatment box 19 and for the gas and spray liquid to mix and react in the treatment box 19.

[0051] Example 3

[0052] This embodiment is basically the same as embodiment 1 in structure. The difference is that this embodiment discloses the specific structure of the disassembly and assembly component B based on embodiment 1. The disassembly and assembly component B includes a fixing block A23 and a sealing ring 25. The sealing ring 25 can improve the sealing of the connection between the processing box 19 and the collection box 24. The fixing block A23 is fixedly set on both sides of the processing box 19 and is relatively far away from the extended U-shaped block B20, so that the fixing block A23 and the extended U-shaped block B20 are vertically far apart. The sealing ring 25 is rectangular and is fixedly set on the top of the collection box 24. The sealing ring 25 has concave blocks 26 on both sides that are fixedly connected to the top of the collection box 24. When the bottom of the processing box 19 is inserted into the sealing ring 25 and communicates with the inside of the collection box 24, the fixing block 23 is located above the concave block 26. The fixing block 23 and the concave block 26 are fitted with positioning blocks 30.

[0053] The positioning block 30 includes a vertical part, and a horizontal part A, a horizontal part B and a horizontal part C are arranged sequentially from top to bottom on one side of the vertical part. The horizontal part A is located at the top of the fixing block 23, the horizontal part B is located between the fixing block 23 and the concave block 26, and the horizontal part C is located in the groove of the concave block 26. Then, the fixing block 23, the concave block 26 and the positioning block 30 are positioned together by bolts to realize the connection between the processing box 19 and the collection box 24.

[0054] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0055] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0056] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A purification device for methanol production from natural gas, comprising: The purification chamber (1) is divided into a filter chamber, a purification chamber A and a purification chamber B by two partition plates (11); Its features The filter chamber is equipped with a gas filter assembly, which includes multiple sets of equally spaced filter plates A (4), and each filter plate A (4) includes two filter unit plates. The purification chamber A is equipped with a collection hopper (17) inside. The bottom of the purification chamber A is equipped with a processing box (19) that connects to the collection hopper (17). The processing box (19) is equipped with a dispersion plate (22) inside. The bottom of the processing box (19) is equipped with a collection box (24), and the collection box (24) is equipped with a liquid filtration assembly inside. The filtration chamber is connected to the processing box (19) through an air intake assembly. The air intake assembly includes a connecting hopper (12) that is connected to the bottom of the purification box (1) and communicates with the inside of the filtration chamber through a flange. The bottom of the connecting hopper (12) is connected to an air inlet pipe A (13) through a flange. The end of the air inlet pipe A (13) away from the connecting hopper (12) is equipped with an exhaust fan (14), and the exhaust fan (14) is away from the air inlet pipe A (13). The position is connected to the air inlet pipe B (15), and the end of the air inlet pipe B (15) away from the exhaust fan (14) extends to the bottom of the inside of the processing box (19) and is provided with a gas dispersing assembly (16); the gas dispersing assembly (16) includes an upper ball cover (1610) and a lower ball cover (1630) connected together by threads. The surfaces of the upper ball cover (1610) and the lower ball cover (1630) are uniformly perforated with gas dispersing holes. The top of the upper ball cover (1610) is fixedly provided with a connecting ring (1620) that is threadedly connected to the air inlet pipe B (15). The bottom of the inside of the lower ball cover (1630) is threadedly connected with a positioning rod (1640), and the surface of the positioning rod (1640) is rotatably provided with a dispersing fan (1650) located inside the lower ball cover (1630). Purification chamber A and purification chamber B are connected by an air-transfer pipe assembly, and both purification chamber A and purification chamber B are equipped with spray components. Purification chamber B is connected to the inside of collection box (24) through liquid inlet pipe (29). The collection hopper (17) and the treatment box (19) are fixed together by a disassembly assembly A, which includes an extended loop block A (18) and an extended loop block B (20). The extended loop block A (18) is located at the bottom of the purification box (1), and the extended loop block B (20) is located on both sides of the treatment box (19) and corresponds to the extended loop block A (18). The extended loop block A (18) and the extended loop block B (20) are positioned and inserted by a U-shaped block (21). The bottom of the processing box (19) is provided with a collection box (24) via a disassembly assembly B. The disassembly assembly B includes a fixing block A (23) and a sealing ring (25). The fixing block A (23) is fixedly installed on both sides of the processing box (19) and is relatively far away from the extended U-shaped block B (20). The sealing ring (25) is rectangular and is fixedly installed on the top of the collection box (24). The sealing ring (25) has concave blocks (26) on both sides that are fixedly connected to the top of the collection box (24). The fixing block A (23) and the concave blocks (26) are provided with positioning blocks (30). The positioning block (30) includes a vertical part, and a horizontal part A, a horizontal part B and a horizontal part C are arranged sequentially from top to bottom on one side of the vertical part. The horizontal part A is located at the top of the fixing block A (23), the horizontal part B is located between the fixing block A (23) and the concave block (26), and the horizontal part C is located in the groove of the concave block (26).

2. The purification device for methanol production from natural gas according to claim 1, characterized in that, The purification box (1) is located on one side of the filter chamber and is connected to a venturi tube (2) via a flange.

3. The purification device for methanol production from natural gas according to claim 1, characterized in that, The liquid filtration assembly includes a reinforcing block, and filter plates B (28) are provided at the top and bottom positions on one side of the reinforcing block. The filter plates B (28) are inserted into the collection box (24) through the mounting port B (27).

4. A purification device for methanol production from natural gas according to claim 1, characterized in that, The air passage assembly includes an air passage (31) connecting the purification chamber A and the purification chamber B, and one end of the air passage (31) connected to the purification chamber B is provided with an air guide (32) and extends to the bottom of the purification chamber B.

5. A purification device for methanol production from natural gas according to claim 1, characterized in that, The spray assembly includes a T-shaped filling pipe (33) connected to an external spraying device, and both ends of the T-shaped filling pipe (33) are provided with H-shaped spray pipes (34) that extend to the top of the purification chamber A and the purification chamber B respectively. The surface of the spray pipe (34) is provided with spray holes.

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