A carbon dioxide adsorption tower for methanol production

Abstract

A carbon dioxide adsorption tower for methanol production belongs to the technical field of adsorption towers and is designed to solve the problem that existing carbon dioxide removal equipment is large in number, high in cost and cannot work continuously. The present invention designs the adsorption mechanism to be rotatable, and arranges two groups of semicircular channels and corresponding first adsorption fillers and second adsorption fillers inside. The drive mechanism is used to drive the rotation of the adsorption mechanism so that the two groups of adsorption fillers perform adsorption and desorption regeneration operations in turn. The extrusion mechanism is combined to control the gas flow direction and pressure change. When the adsorption fillers are switched, the extrusion mechanism uses the product gas in the exhaust pipe and compresses it into the fillers so that the residual carbon dioxide re-enters the adsorption fillers to be adsorbed. The process is simple, the carbon dioxide adsorption process is continuous and uninterrupted, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of adsorption towers, in particular to a carbon dioxide adsorption tower for methanol production. Background Art

[0002] In modern industrial production, the production and utilization of carbon dioxide is an important research field. For example, in the field of coal chemical industry, complex processes are usually involved to produce and process carbon dioxide.

[0003] In the prior art, the coal gas is used to produce methanol, which requires pressurizing and purifying the coal gas. After carbon monoxide is converted into hydrogen and carbon dioxide, the excess carbon dioxide is removed through a decarbonization process. The removal of carbon dioxide consists of multiple adsorption towers, which need to alternately perform multiple operation steps such as adsorption and regeneration, including adsorption, 8 equalizing pressure reductions, 2 inversions, vacuuming, 8 equalizing pressure increases, and final pressure increase of purified gas. The process is complex and requires numerous equipment. A large investment in equipment means high costs. From adsorption towers to various compressors, reactors and other equipment, the purchase, installation, and maintenance require a lot of money. The operation of many equipment consumes a lot of energy, which increases production costs. Such a complex equipment system is difficult to achieve continuous and stable operation during operation. Summary of the invention

[0004] The object of the present invention is to provide a carbon dioxide adsorption tower for methanol production, which solves the problem that the existing carbon dioxide removal equipment in the background technology is large in number, high in cost and cannot work continuously.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a carbon dioxide adsorption tower for methanol production, comprising a shell and an adsorption mechanism arranged inside the shell, the adsorption mechanism is rotatably arranged inside the shell, and a driving mechanism for driving the adsorption mechanism to rotate is arranged outside the shell, the shell is composed of a base and a tower body installed on the top of the base, the adsorption mechanism comprises a rotating shell rotatably arranged inside the shell, two groups of semicircular channels are arranged through the inside of the rotating shell, and the two channels are not connected, a first adsorption filler and a second adsorption filler are respectively arranged in the two channels, and the first adsorption filler and the second adsorption filler are alternately adsorbed and desorbed and regenerated, a first pipe and a second pipe are respectively fixedly installed on both sides of the bottom of the adsorption mechanism, and the first pipe and the second pipe are respectively connected to the inside of the first adsorption filler and the second adsorption filler, an air intake pipe and a negative pressure pipe are respectively fixedly installed on both sides of the outside of the base, the air intake pipe is used for air intake, the first adsorption filler and the second adsorption filler are used for adsorbing carbon dioxide in the incoming gas, and the other end of the negative pressure pipe is connected to a negative pressure device for desorbing carbon dioxide adsorbed inside the first adsorption filler and the second adsorption filler;

[0006] A first branch pipe is installed in the middle of the first pipe, a second branch pipe is installed in the lower part of the first pipe, a third branch pipe is installed in the middle of the second pipe, and a fourth branch pipe is installed in the lower part of the second pipe. The third branch pipe and the first branch pipe correspond to the air inlet pipe and the negative pressure pipe. An extrusion mechanism is arranged inside the base. The second branch pipe and the fourth branch pipe extend to the inside of the base and correspond to the extrusion mechanism. An exhaust pipe is arranged on the top of the tower body. A connecting pipe is arranged between the exhaust pipe and the base. The extrusion mechanism is used to generate pressure inside the base during the rotation of the adsorption mechanism, and to suck and push the gas in the exhaust pipe into the adsorption mechanism, so that the residual carbon dioxide between the fillers in the first adsorption filler or the second adsorption filler generates kinetic energy and is adsorbed.

[0007] Furthermore, an exhaust shell and an air intake shell are fixedly installed on the top and bottom of the rotating shell respectively, and the exhaust shell and the air intake shell are respectively provided with two groups corresponding to the first adsorption filler and the second adsorption filler. A one-way exhaust valve is embedded above the exhaust shell, and the first pipe and the second pipe are fixedly installed below the air intake shell.

[0008] Furthermore, a groove is provided in the upper middle of the base, an annular inner cavity is provided inside the base, a connecting groove connected to the inner cavity is provided inside the groove, and a movable groove is also provided inside the base, and the movable groove is connected to the inner cavity.

[0009] Furthermore, the extrusion mechanism includes a connecting rod fixedly installed below between the two groups of air intake shells, a rotating sealing plate is installed at the bottom of the connecting rod, the rotating sealing plate is rotatably arranged inside the groove for sealing the connecting groove, the first pipe and the second pipe penetrate from the top of the rotating sealing plate and pass through and extend to the interior of the inner cavity from the side; the extrusion mechanism also includes a first valve plate and a second valve plate fixedly installed on the second branch pipe and the fourth branch pipe, the first valve plate and the second valve plate are rotatably arranged inside the inner cavity, and a movable sealing plate is movably arranged inside the movable groove; a first one-way air intake valve and a second one-way air intake valve are fixedly arranged on the top of the base, and the bottom of the connecting pipe is forked in a Y shape and is connected to the interior of the inner cavity through the first one-way air intake valve and the second one-way air intake valve.

[0010] Further, the end of the second branch pipe is located on the first valve plate, penetrates the first valve plate in a clockwise direction and is connected to the inner cavity, and the end of the fourth branch pipe is located on the second valve plate, penetrates the second valve plate in a counterclockwise direction and is connected to the inner cavity. The driving mechanism rotates 180 degrees clockwise or counterclockwise each time, and the extrusion mechanism rotates accordingly during the rotation. When the adsorption mechanism rotates clockwise, the first valve plate compresses the gas between the first valve plate and the movable sealing plate, and the gas enters the first adsorption filler along the second branch pipe and the first pipeline, so that the residual carbon dioxide in the first adsorption filler moves upward and is completely adsorbed. In this process, the second valve plate rotates clockwise, and the pressure between the second valve plate and the movable sealing plate decreases. The gas inside the exhaust pipe is adsorbed through the second one-way intake valve and the connecting pipe. The gas is the product gas after the carbon dioxide is removed. After the rotation of the adsorption mechanism is completed, the first adsorption filler and the second adsorption filler are replaced, and the third branch pipe below the second adsorption filler corresponds to the intake pipe and starts to adsorb carbon dioxide, while the first branch pipe below the first adsorption filler corresponds to the negative pressure pipe, and the filler inside the first adsorption filler is regenerated and carbon dioxide is desorbed by negative pressure.

[0011] Furthermore, a sealed shell is installed on the outside of the tower body, and the driving mechanism includes a gear ring rotatably arranged inside the tower body and the sealed shell, and the gear ring is fixedly connected to the outside of the rotating shell. The driving mechanism also includes a motor fixedly installed on the outer wall of the base, and the output end of the motor extends to the inside of the sealed shell and is fixedly connected to a spur gear, and the spur gear is meshed with the gear ring.

[0012] Furthermore, the first pipeline, the first branch pipe and the second branch pipe are in an inverted F shape, and the first pipeline, the first branch pipe and the second branch pipe are interconnected, and the structure of the second pipeline is the same as that of the first pipeline.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: a carbon dioxide adsorption tower for methanol production provided by the present invention designs the adsorption mechanism to be rotatable, and two groups of semicircular channels and corresponding first adsorption fillers and second adsorption fillers are arranged inside, and the drive mechanism is used to drive the rotation thereof, so that the two groups of adsorption fillers take turns to perform adsorption and desorption regeneration operations. At the same time, branch pipes corresponding to the air inlet pipe and the negative pressure pipe are arranged on the base of the outer shell, and the gas flow direction and pressure change are controlled in combination with the extrusion mechanism. When the adsorption filler is switched, the extrusion mechanism utilizes the product gas in the exhaust pipe and compresses it into the filler, so that the residual carbon dioxide re-enters the adsorption filler to be adsorbed. Only one adsorption tower is required to complete the continuous adsorption and desorption process of carbon dioxide. Compared with the complex operation of multiple adsorption towers in alternation in the traditional process, the adsorption efficiency is improved, the residual amount of carbon dioxide in the product gas is reduced, the process flow is simplified, the continuous and uninterrupted carbon dioxide adsorption process is realized, and the production interruption caused by the intermittent period of the alternating operation of the adsorption tower in the traditional process is avoided, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a disassembled diagram of the overall structure of the present invention;

[0016] Figure 3 It is a schematic diagram of the adsorption mechanism, the driving mechanism, the first pipeline, the second pipeline and the extrusion mechanism of the present invention;

[0017] Figure 4 It is a cross-sectional view of the adsorption mechanism and the driving mechanism structure of the present invention;

[0018] Figure 5 It is a schematic diagram of the structure of the first pipeline and the second pipeline of the present invention;

[0019] Figure 6 It is a schematic diagram of the base structure of the present invention;

[0020] Figure 7 It is a structural diagram of the dissected state of the base of the present invention;

[0021] Figure 8 It is a schematic diagram of the motion state of the base and the extrusion mechanism of the present invention.

[0022] In the figure: 1. shell; 11. base; 111. groove; 112. connecting groove; 113. inner cavity; 114. movable groove; 115. first one-way air intake valve; 116. second one-way air intake valve; 12. tower body; 121. exhaust pipe; 122. sealing shell; 2. adsorption mechanism; 21. rotating shell; 22. first adsorption filler; 23. second adsorption filler; 24. exhaust shell; 25. one-way exhaust valve; 26. air intake shell; 3. driving mechanism; 31. motor; 32. spur gear; 33. gear ring; 4. first pipeline; 41. first branch pipe; 42. second branch pipe; 5. second pipeline; 51. third branch pipe; 52. fourth branch pipe; 6. extrusion mechanism; 61. connecting rod; 62. rotating sealing plate; 63. first valve plate; 64. second valve plate; 65. movable sealing plate; 7. connecting pipe; 8. air intake pipe; 9. negative pressure pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In order to solve the technical problems that the existing carbon dioxide removal equipment is large in number, high in cost and cannot work sustainably, such as Figure 1-Figure 8 As shown, the following preferred technical solutions are provided:

[0025] like Figure 1-Figure 2 As shown, a carbon dioxide adsorption tower for methanol production includes a shell 1 and an adsorption mechanism 2 arranged inside the shell 1. The adsorption mechanism 2 is rotatably arranged inside the shell 1. A driving mechanism 3 for driving the adsorption mechanism 2 to rotate is arranged outside the shell 1. The shell 1 is composed of a base 11 and a tower body 12 installed on the top of the base 11. The adsorption mechanism 2 includes a rotating shell 21 rotatably arranged inside the shell 1. Figure 4 As shown, two groups of semicircular channels are provided in the interior of the rotating shell 21 from top to bottom, and the two channels are not connected. The first adsorption filler 22 and the second adsorption filler 23 are respectively provided in the two channels, and the first adsorption filler 22 and the second adsorption filler 23 perform adsorption and desorption regeneration in turn. The first pipe 4 and the second pipe 5 are respectively fixedly installed on both sides of the bottom of the adsorption mechanism 2, and the first pipe 4 and the second pipe 5 are respectively connected to the first adsorption filler 22 and the second adsorption filler 23. The air intake pipe 8 and the negative pressure pipe 9 are respectively fixedly installed on both sides of the outside of the base 11, and the air intake pipe 8 is used for air intake. The first adsorption filler 22 and the second adsorption filler 23 are used to adsorb carbon dioxide in the incoming gas. The other end of the negative pressure pipe 9 is connected to a negative pressure device for desorbing carbon dioxide adsorbed in the first adsorption filler 22 and the second adsorption filler 23.

[0026] like Figure 5 As shown, a first branch pipe 41 is installed in the middle of the first pipe 4, a second branch pipe 42 is installed in the lower part of the first pipe 4, a third branch pipe 51 is installed in the middle of the second pipe 5, and a fourth branch pipe 52 is installed in the lower part of the second pipe 5. The third branch pipe 51 and the first branch pipe 41 correspond to the air inlet pipe 8 and the negative pressure pipe 9. An extrusion mechanism 6 is arranged inside the base 11. The second branch pipe 42 and the fourth branch pipe 52 extend to the inside of the base 11 and correspond to the extrusion mechanism 6. An exhaust pipe 121 is arranged on the top of the tower body 12. A connecting pipe 7 is arranged between the exhaust pipe 121 and the base 11. The extrusion mechanism 6 is used to generate pressure inside the base 11 during the rotation of the adsorption mechanism 2, and to suck and push the gas in the exhaust pipe 121 into the adsorption mechanism 2, so that the residual carbon dioxide between the fillers in the first adsorption filler 22 or the second adsorption filler 23 generates kinetic energy and is adsorbed.

[0027] like Figure 4As shown, an exhaust shell 24 and an air intake shell 26 are fixedly installed on the top and bottom of the rotating shell 21 respectively. The exhaust shell 24 and the air intake shell 26 are respectively provided with two groups corresponding to the first adsorption filler 22 and the second adsorption filler 23. A one-way exhaust valve 25 is embedded above the exhaust shell 24, and the first pipe 4 and the second pipe 5 are fixedly installed below the air intake shell 26.

[0028] like Figure 6-Figure 7 As shown, a groove 111 is provided in the middle upper part of the base 11, an annular inner cavity 113 is provided inside the base 11, a connecting groove 112 connected to the inner cavity 113 is provided inside the groove 111, and a movable groove 114 is also provided inside the base 11, and the movable groove 114 is connected to the inner cavity 113.

[0029] like Figure 5 As shown, the extrusion mechanism 6 includes a connecting rod 61 fixedly installed below between the two groups of air intake shells 26, a rotating sealing plate 62 is installed at the bottom of the connecting rod 61, and the rotating sealing plate 62 is rotatably set inside the groove 111 for sealing the connecting groove 112, and the first pipe 4 and the second pipe 5 penetrate from the top of the rotating sealing plate 62 and extend from the side to the inside of the inner cavity 113; the extrusion mechanism 6 also includes a first valve plate 63 and a second valve plate 64 fixedly installed on the second branch pipe 42 and the fourth branch pipe 52, the first valve plate 63 and the second valve plate 64 are rotatably set inside the inner cavity 113, and a movable sealing plate 65 is movably set inside the movable groove 114; a first one-way air intake valve 115 and a second one-way air intake valve 116 are fixedly set on the top of the base 11, and the bottom of the connecting pipe 7 is forked in a Y shape and is connected to the inside of the inner cavity 113 through the first one-way air intake valve 115 and the second one-way air intake valve 116.

[0030] like Figure 3 and Figure 5 As shown, the end of the second branch pipe 42 is located at the first valve plate 63, passes through the first valve plate 63 in a clockwise direction and is connected to the inner cavity 113, and the end of the fourth branch pipe 52 is located at the second valve plate 64, passes through the second valve plate 64 in a counterclockwise direction and is connected to the inner cavity 113. Each time the driving mechanism 3 rotates 180° clockwise or counterclockwise, the extrusion mechanism 6 rotates accordingly, as shown in FIG. Figure 8As shown on the left side, when the adsorption mechanism 2 rotates clockwise, the first valve plate 63 compresses the gas between the first valve plate 63 and the movable sealing plate 65, and the gas enters the first adsorption filler 22 along the second branch pipe 42 and the first pipeline 4, so that the residual carbon dioxide in the first adsorption filler 22 moves upward and is completely adsorbed. In this process, the second valve plate 64 rotates clockwise, and the pressure between the second valve plate 64 and the movable sealing plate 65 decreases. The gas inside the exhaust pipe 121 is adsorbed through the second one-way air intake valve 116 and the connecting pipe 7. The gas is the product gas after the carbon dioxide is removed. After the rotation of the adsorption mechanism 2 is completed, the first adsorption filler 22 and the second adsorption filler 23 are replaced, and the third branch pipe 51 below the second adsorption filler 23 corresponds to the air intake pipe 8, and starts to adsorb carbon dioxide, while the first branch pipe 41 below the first adsorption filler 22 corresponds to the negative pressure pipe 9, and the internal filler of the first adsorption filler 22 is regenerated and the carbon dioxide is desorbed by negative pressure.

[0031] like Figure 3 As shown, a sealed shell 122 is installed on the outside of the tower body 12, and the driving mechanism 3 includes a gear ring 33 rotatably arranged inside the tower body 12 and the sealed shell 122, and the gear ring 33 is fixedly connected to the outside of the rotating shell 21. The driving mechanism 3 also includes a motor 31 fixedly installed on the outer wall of the base 11, and the output end of the motor 31 extends to the inside of the sealed shell 122 and is fixedly connected to a spur gear 32, and the spur gear 32 is meshed with the gear ring 33.

[0032] The first pipeline 4 , the first branch pipe 41 and the second branch pipe 42 are in an inverted F shape, and the first pipeline 4 , the first branch pipe 41 and the second branch pipe 42 are interconnected. The structure of the second pipeline 5 is the same as that of the first pipeline 4 .

[0033] The specific working principle is:

[0034] Intake adsorption stage: the raw gas enters the tower body 12 through the intake pipe 8. At this time, the adsorption mechanism 2 is in the initial position. The first branch pipe 41 of the first pipeline 4 below the first adsorption filler 22 is connected to the intake pipe 8. At this time, the second adsorption filler 23 is in the regeneration process. The raw gas enters the first adsorption filler 22 through the first pipeline 4. The carbon dioxide in the gas is adsorbed by the adsorption filler. The purified product gas is discharged through the exhaust shell 24 and the one-way exhaust valve 25, and is discharged to the next process outside the tower through the exhaust pipe 121;

[0035] Adsorption filler switching and residual gas processing stage: When the adsorption of the first adsorption filler 22 is close to saturation, the motor 31 starts and drives the adsorption mechanism 2 to rotate 180° clockwise. During the rotation, the connecting rod 61 drives the rotating sealing plate 62 to rotate, and the first valve plate 63 and the second valve plate 64 also rotate accordingly. The first valve plate 63 compresses the gas between it and the movable sealing plate 65, so that the gas enters the first adsorption filler 22 along the second branch pipe 42 and the first pipeline 4, pushing the residual carbon dioxide to move upward and be completely adsorbed. At the same time, the second valve plate 64 rotates to reduce the pressure between it and the movable sealing plate 65, and the product gas in the exhaust pipe 121 is sucked into the inner cavity 113 through the connecting pipe 7 and the second one-way air inlet valve 116 to prepare for subsequent circulation;

[0036] Desorption and regeneration stage: After the adsorption mechanism 2 completes its rotation, the first adsorption filler 22 and the second adsorption filler 23 swap positions. At this time, the second adsorption filler 23 begins to adsorb carbon dioxide, and the first branch pipe 41 below the first adsorption filler 22 is connected to the negative pressure pipe 9. The negative pressure device evacuates the inside of the first adsorption filler 22 through the negative pressure pipe 9, breaking the adsorption equilibrium, so that the adsorbed carbon dioxide is desorbed and extracted, thereby realizing the regeneration of the adsorption filler.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A carbon dioxide adsorption tower for methanol production, comprising a shell (1) and an adsorption mechanism (2) arranged inside the shell (1), characterized in that: The adsorption mechanism (2) is rotatably arranged inside the shell (1), and a driving mechanism (3) for driving the adsorption mechanism (2) to rotate is arranged outside the shell (1). The shell (1) is composed of a base (11) and a tower body (12) installed on the top of the base (11). The adsorption mechanism (2) comprises a rotating shell (21) rotatably arranged inside the shell (1), and two groups of semicircular channels are arranged in the interior of the rotating shell (21) from top to bottom, and the two channels are not connected. A first adsorption filler (22) and a second adsorption filler (23) are respectively arranged in the two channels, and the first adsorption filler (22) and the second adsorption filler (23) perform adsorption and desorption in turn. Regeneration, a first pipe (4) and a second pipe (5) are fixedly mounted on both sides of the bottom of the adsorption mechanism (2), and the first pipe (4) and the second pipe (5) are respectively connected to the inside of the first adsorption filler (22) and the second adsorption filler (23), and an air intake pipe (8) and a negative pressure pipe (9) are fixedly mounted on both sides of the outside of the base (11), the air intake pipe (8) is used for air intake, the first adsorption filler (22) and the second adsorption filler (23) are used for adsorbing carbon dioxide in the incoming gas, and the other end of the negative pressure pipe (9) is connected to a negative pressure device for desorbing carbon dioxide adsorbed inside the first adsorption filler (22) and the second adsorption filler (23); A first branch pipe (41) is installed in the middle of the first pipe (4), a second branch pipe (42) is installed in the lower part of the first pipe (4), a third branch pipe (51) is installed in the middle of the second pipe (5), a fourth branch pipe (52) is installed in the lower part of the second pipe (5), the third branch pipe (51) and the first branch pipe (41) correspond to the air intake pipe (8) and the negative pressure pipe (9), a squeezing mechanism (6) is arranged inside the base (11), and the second branch pipe (42) and the fourth branch pipe (52) extend to The interior of the base (11) corresponds to the extrusion mechanism (6); an exhaust pipe (121) is provided at the top of the tower body (12); a connecting pipe (7) is provided between the exhaust pipe (121) and the base (11); the extrusion mechanism (6) is used to generate pressure inside the base (11) during the rotation of the adsorption mechanism (2), and to suck and push the gas in the exhaust pipe (121) into the adsorption mechanism (2), so that the residual carbon dioxide between the fillers in the first adsorption filler (22) or the second adsorption filler (23) generates kinetic energy and is adsorbed.

2. A carbon dioxide adsorption tower for methanol production as claimed in claim 1, characterized in that: An exhaust shell (24) and an air intake shell (26) are fixedly mounted on the top and bottom of the rotating shell (21), respectively. Two groups of the exhaust shell (24) and the air intake shell (26) are provided corresponding to the first adsorption filler (22) and the second adsorption filler (23), respectively. A one-way exhaust valve (25) is embedded above the exhaust shell (24), and the first pipe (4) and the second pipe (5) are fixedly mounted below the air intake shell (26).

3. A carbon dioxide adsorption tower for methanol production as claimed in claim 2, characterized in that: A groove (111) is provided in the middle upper portion of the base (11), an annular inner cavity (113) is provided inside the base (11), and a connecting groove (112) communicating with the inner cavity (113) is provided inside the groove (111).

4. A carbon dioxide adsorption tower for methanol production as claimed in claim 3, characterized in that: A movable groove (114) is also provided inside the base (11), and the movable groove (114) is communicated with the inner cavity (113).

5. A carbon dioxide adsorption tower for methanol production as claimed in claim 4, characterized in that: The extrusion mechanism (6) comprises a connecting rod (61) fixedly mounted below the two groups of air intake shells (26); a rotating sealing plate (62) is mounted at the bottom of the connecting rod (61); the rotating sealing plate (62) is rotatably disposed inside the groove (111) for sealing the connecting groove (112); the first pipe (4) and the second pipe (5) penetrate from the top of the rotating sealing plate (62) and extend from the side to the inside of the inner cavity (113).

6. A carbon dioxide adsorption tower for methanol production as claimed in claim 5, characterized in that: The extrusion mechanism (6) further comprises a first valve plate (63) and a second valve plate (64) fixedly mounted on the second branch pipe (42) and the fourth branch pipe (52); the first valve plate (63) and the second valve plate (64) are rotatably arranged inside the inner cavity (113); and a movable sealing plate (65) is movably arranged inside the movable groove (114).

7. A carbon dioxide adsorption tower for methanol production as claimed in claim 6, characterized in that: A first one-way air intake valve (115) and a second one-way air intake valve (116) are fixedly arranged on the top of the base (11), and the bottom of the connecting pipe (7) is forked in a Y shape and is connected to the interior of the inner cavity (113) through the first one-way air intake valve (115) and the second one-way air intake valve (116).

8. A carbon dioxide adsorption tower for methanol production as claimed in claim 7, characterized in that: The end of the second branch pipe (42) is located on the first valve plate (63), penetrates the first valve plate (63) in a clockwise direction and is connected to the inner cavity (113); the end of the fourth branch pipe (52) is located on the second valve plate (64), penetrates the second valve plate (64) in a counterclockwise direction and is connected to the inner cavity (113); the driving mechanism (3) is configured to rotate 180° clockwise or counterclockwise each time.

9. A carbon dioxide adsorption tower for methanol production as claimed in claim 1, characterized in that: A sealed shell (122) is installed outside the tower body (12), the driving mechanism (3) comprises a gear ring (33) rotatably arranged inside the tower body (12) and the sealed shell (122), the gear ring (33) being fixedly connected to the outside of the rotating shell (21), the driving mechanism (3) further comprising a motor (31) fixedly installed on the outer wall of the base (11), the output end of the motor (31) extending to the inside of the sealed shell (122) and being fixedly connected to a spur gear (32), the spur gear (32) being meshingly connected to the gear ring (33).

10. The carbon dioxide adsorption tower for methanol production according to claim 1, characterized in that: The first pipeline (4), the first branch pipe (41) and the second branch pipe (42) are in an inverted F shape, and the first pipeline (4), the first branch pipe (41) and the second branch pipe (42) are interconnected. The structure of the second pipeline (5) is the same as that of the first pipeline (4).

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