Deep purification and drying device based on carbon dioxide recovery treatment

Abstract

The application discloses a deep purification and drying device based on carbon dioxide recovery treatment and mainly relates to the technical field of carbon dioxide recovery treatment, and comprises a vertical pressure-bearing cylinder body, a closed cylinder which is in a ring-shaped surrounding structure and is installed, is used for fixing and supporting the closed cylinder, and is provided with an air inlet pipe and an air outlet pipe corresponding to the two sides of the side wall, three groups of gradient precision filter elements are connected in series, dust is gradually and deeply intercepted, the dust content of the outlet is further reduced, the same rotating main shaft is used for synchronously driving the fan blade negative pressure internal suction and the filter element centrifugal self-cleaning, the low-resistance operation can be maintained without blowing gas, a pure mechanical linkage mechanism is triggered through speed change, the brush contacts the filter element to perform circumferential brushing and synchronously sucks and peels off the dust in the low-speed mode, online self-cleaning is realized without shutdown, the problems of insufficient filtering precision, cleaning dependence on shutdown or external air source and difficult function switching are solved, and the filter element replacement cycle is greatly prolonged.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide recovery and treatment technology, specifically to a deep purification and drying device based on carbon dioxide recovery and treatment. Background Technology

[0002] In the carbon dioxide recovery process, deep purification and drying are key steps to ensure the quality of recovered carbon dioxide. The recovered carbon dioxide gas usually contains a large number of dust particles, including large fly ash particles, micron-sized aluminosilicate powder, and submicron-sized charged flocculants. If these impurities are not effectively removed, they will seriously affect the normal operation of subsequent compression, liquefaction, and storage processes, and may even cause irreversible damage to downstream precision equipment. Therefore, it is essential to set up a high-efficiency gas filtration and purification device in the carbon dioxide recovery system.

[0003] Currently, carbon dioxide gas filtration and purification devices mainly employ adsorption towers, filters, and other units connected in series or parallel via pipelines. For example, the carbon dioxide recovery equipment disclosed in invention application CN120550553A includes three parallel drying mechanisms that adsorb and remove moisture from carbon dioxide using adsorbent in the dryer. It also includes a carbon dioxide water content control system, which uses a buffer tank, filter, compressor, cooler, water-gas separator, adsorption drying tower, and liquefaction unit arranged in sequence to form a purification process. There is also a closed-loop zero-gas-consumption carbon dioxide drying and dehydration device, which uses a first drying tower, a second drying tower, and an auxiliary drying tower arranged in parallel to achieve self-regeneration of the adsorbent. The above technologies can purify and dry carbon dioxide to a certain extent, but they still have the following shortcomings: the filtration precision is limited, making it difficult to achieve gradient depth purification. Most of them use single-precision filter elements or adsorbents for filtration. Dust particles of different sizes are mixed and intercepted in the same filtration stage. This not only causes coarse particles to quickly clog the pores on the surface of the filter element and greatly shorten the service life of the filter element, but also causes fine particles to be deposited again on the "filter cake layer" formed by the accumulation of coarse particles, further aggravating the increase in filtration resistance. Furthermore, cleaning the filter element relies on stopping the machine for disassembly or introducing an external backflushing air source, which affects continuous production efficiency. As the filtration process continues, a large amount of dust will inevitably accumulate on the surface of the filter element, leading to increased filtration resistance and decreased purification efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a deep purification and drying device based on carbon dioxide recovery treatment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a deep purification and drying device based on carbon dioxide recovery treatment, comprising: The vertical pressure-bearing cylinder has a ring-shaped enclosed structure and is equipped with a sealed cylinder for fixing and supporting the sealed cylinder. The side walls are equipped with air inlet pipes and air outlet pipes respectively. The sealed cylinders are arranged in a triangular vertical distribution on the vertical pressure-bearing cylinder body and fixed by bolts. A branch pipe is set at the bottom of the sealed cylinder on the side of the air inlet pipe and connected to the air inlet pipe. At the same time, a branch pipe on the side wall of the sealed cylinder is connected to the bottom of the other sealed cylinder. The three sets of sealed cylinders are connected by the bottom inlet and the side wall outlet branch pipe. The last sealed cylinder side wall branch pipe is connected to the air outlet pipe. The vertical rotating assembly is located on a sealed cylinder and includes a motor set at the top of the sealed cylinder and a hollow main shaft that moves inside the sealed cylinder. Fan blades are sleeved and installed on the side wall of the hollow main shaft, and the fan blade ends are connected to the motor. A nested annular filter element is fixedly connected to the other end of the hollow main shaft, and the nested annular filter element is driven to rotate by the rotation of the motor. The partition is installed on the inner wall of the sealed cylinder to divide the upper and lower areas, and is used to seal the top of the nested annular filter element.

[0006] Furthermore, the three sets of sealed cylinders are equipped with nested annular filter elements, namely annular stainless steel sintered felt, annular metal powder sintered porous tube, and annular membrane-coated PTFE composite mesh, with precision of 50μm, 10μm, and 1μm, respectively.

[0007] Furthermore, the vertical rotating assembly also includes a swing arm and a counterweight rod. The swing arm is uniformly rotatably connected to the side wall of the hollow main shaft, and the counterweight rod is hinged to the end of the swing arm. The counterweight rod is provided with multiple sets of through holes and rotates with the hollow main shaft to accelerate the airflow inside the nested annular filter element.

[0008] Furthermore, a semi-circular limiting sleeve is slidably engaged on the swing arm, and the other side of the limiting sleeve is locked by a nut. The opening angle of the semi-circular limiting sleeve can be adjusted by interlocking adjustment. The counterweight rod is sleeved on the limiting sleeve and a stop is installed on one side. The swing angle of the counterweight rod is limited by the cooperation of the stop and the limiting sleeve.

[0009] Furthermore, a sleeve is slidably fitted on the hollow main shaft, and a rotating sleeve is rotatably connected to the bottom of the sleeve through a bearing. The side wall of the rotating sleeve is engaged with the side wall of the swing arm through a groove on the rod body, and the rotating sleeve is pulled down as the swing arm rotates. A spring is fitted on the top of the sleeve at the partition plate.

[0010] Furthermore, the sidewall of the nested annular filter element, which is fixed to the bottom of the sealed cylinder, is provided with a side-flushing cleaning assembly. The side-flushing cleaning assembly includes a fixed vertical cover, a lifting rod slidably connected inside the vertical cover, a hanging plate slidably connected inside the vertical cover on the side of the lifting rod, and the two are hinged together by a connecting rod. A cleaning brush is provided on the side of the hanging plate, and a suction tube is installed on the inner wall of the vertical cover.

[0011] Furthermore, a rocker arm is rotatably connected to the top of the partition and the corresponding lifting rod end. One end of the rocker arm is slidably connected to the lifting rod, and the other side is abutted against the inner wall of the top of the sleeve by means of ball bearings.

[0012] Furthermore, a detection grid is installed on the vertical pressure-bearing cylinder to monitor in real time large dust particles escaping from the middle filter layer into the branch pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention constructs a three-in-one high-efficiency filtration system of "series gradient interception - negative pressure internal suction enhancement - centrifugal self-cleaning" to achieve continuous deep purification with low resistance drop and long life. Through the series arrangement of three sets of sealed cylinders, with three-stage annular filter elements of progressively increasing precision, it ensures that dust-laden carbon dioxide passes through the filter element barrier step by step, fundamentally eliminating flow deviation and short circuit, reducing the dust content at the outlet. The rotation of the fan blades generates negative pressure to force flow through, overcoming the defect of insufficient flow velocity when relying on pipeline pressure to drive the flow. The centrifugal force generated by the rotation of the filter element itself continuously throws the intercepted dust outward, forming a dynamic balance with the negative pressure internal suction, making it difficult for a thick filter cake to form on the filter element surface. The pressure drop rises very slowly, and self-cleaning can be achieved without backflushing gas, greatly reducing energy consumption and meeting the stringent standards for electronic-grade carbon dioxide recovery.

[0014] 2. This invention also utilizes a purely mechanical speed-displacement conversion mechanism comprised of a swing arm, counterweight rod, sleeve, and spring on a hollow main shaft. This mechanism works in conjunction with the lifting rod, hanging plate, brush, and rocker arm in the side-flushing cleaning assembly. During high-speed filtration, the brush automatically separates from the side wall of the filter element, avoiding additional resistance. During low-speed cleaning, the brush closely contacts the rotating filter element surface for circumferential sweeping, while the suction pipe creates a slight negative pressure in the brushing area, instantly removing the loosened dust. The entire cleaning process is triggered solely by changes in motor speed, requiring no pneumatic or hydraulic components. Furthermore, the opening and closing angle of the limiting sleeve can be independently adjusted to achieve differentiated cleaning of the three-stage filter elements, enabling online self-cleaning without stopping the machine or consuming air, significantly extending the filter element replacement cycle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the deep purification and drying device for carbon dioxide recovery and treatment according to the present invention; Figure 2 This is a bottom view of the vertical pressure-bearing cylinder of the present invention. Figure 3 This is a schematic diagram of the sealed cylindrical installation structure inside the vertical pressure-bearing cylinder of the present invention. Figure 4 This is a schematic diagram of the installation structure of the inner partition plate of the sealed cylinder of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the sealed cylindrical structure of the present invention; Figure 6This is a schematic diagram of the installation structure of the side flushing cleaning assembly for the outer wall of the nested annular filter element of the present invention; Figure 7 This is a schematic diagram of the installation structure of the swing arm and counterweight rod on the hollow main shaft of the present invention; Figure 8 This is a schematic diagram of the structure in which the limiting sleeve installed on the inner side of the swing arm abuts against the stop block on the counterweight rod according to the present invention.

[0016] In the diagram: 1. Vertical pressure-bearing cylinder; 2. Sealed cylinder; 3. Inlet pipe; 4. Branch pipe; 5. Outlet pipe; 6. Detection grid; 7. Partition plate; 8. Vertical rotating assembly; 801. Motor; 802. Hollow main shaft; 803. Fan blade; 804. Nested annular filter element; 805. Swing arm; 806. Counterweight rod; 9. Sleeve; 10. Spring; 11. Rotating sleeve; 12. Side flushing cleaning assembly; 121. Vertical cover; 122. Lifting rod; 123. Hanging plate; 124. Suction pipe; 13. Tilter rod; 14. Stop block; 15. Limiting sleeve. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-8 The present invention provides a technical solution: Example 1: The deep purification and drying device based on carbon dioxide recovery of the present invention constructs a series deep purification channel by means of three sets of sealed cylinders 2 arranged in a triangular vertical distribution on a vertical pressure cylinder 1, and connected by a bottom-in and side-out branch pipe 4. Dust-laden ultra-dry carbon dioxide gas enters the bottom of the first set of sealed cylinders 2 from the inlet pipe 3, and completes the initial interception in the process of passing through the filter element. Then it enters the bottom of the second set of sealed cylinders 2 from the side wall branch pipe 4, and so on, and finally exits from the outlet pipe 5, thereby realizing the stepwise gradient purification of recovered carbon dioxide. like Figure 1 As shown, the vertical pressure-bearing cylinder 1 serves as the load-bearing skeleton of the entire device, forming a ring-shaped enclosed structure. The air inlet pipe 3 and air outlet pipe 5 are installed on both sides of its side wall. The three sets of sealed cylinders 2 are vertically fixed to the vertical pressure-bearing cylinder 1 by bolts, forming a triangular symmetrical layout. This structural design not only makes the entire device structure compact, but also effectively counteracts the vibration and off-center load caused by centrifugal rotation, improving the stability of equipment operation. A branch pipe 4 is installed at the bottom of the sealed cylinder 2 located on the side of the inlet pipe 3 and is connected to the inlet pipe 3. At the same time, the branch pipe 4 on the side wall of the sealed cylinder 2 is connected to the bottom of the other sealed cylinder 2. The three sets of sealed cylinders 2 are connected in series through this "bottom in, side wall out" branch pipe 4 connection method. The last sealed cylinder 2 side wall branch pipe 4 is connected to the outlet pipe 5. This series layout ensures that all carbon dioxide gas must pass through three layers of filter elements with increasing precision in sequence, and the flow deviation and short circuit phenomenon common in parallel structures will not occur, which fundamentally guarantees the reliability of the purification effect. In specific filtration, the nested annular filter elements 804 installed in the three sets of sealed cylinders 2 are respectively annular stainless steel sintered felt, annular metal powder sintered porous tube and annular membrane PTFE composite mesh, with accuracies of 50μm, 10μm and 1μm respectively. The gas passes through three barriers in sequence: coarse filtration, medium filtration, and fine filtration. Large particles of fly ash, micron-sized aluminosilicate powder, and submicron-sized charged flocculants are intercepted layer by layer. Compared with traditional single-precision filtration methods, the gradient precision combination of this invention not only extends the service life of the expensive fine filter layer, but also reduces the outlet dust content from the conventional mg / m³. 3 The level dropped directly to μg / m 3 Grade 1, meeting the stringent standards for electronic-grade carbon dioxide recycling and reuse; The vertical rotating assembly 8 located within each sealed cylinder 2 is the core component for achieving integrated dynamic filtration and self-cleaning. Figure 3 and Figure 4 As shown, the vertical rotating assembly 8 includes a motor 801 disposed at the top of the sealed cylinder 2 and a hollow main shaft 802 movably disposed inside the sealed cylinder 2. The output end of the motor 801 is connected to the hollow main shaft 802. A fan blade 803 is fitted on the side wall of the hollow main shaft 802. The fan blade 803 is located in the area above the partition 7, and one end of the fan blade 803 is connected to the motor 801. The other end of the hollow main shaft 802 is fixedly connected to a nested annular filter element 804. When working, the motor 801 starts and drives the fan blade 803 and the nested annular filter element 804 to rotate synchronously through the hollow main shaft 802. The partition 7 is installed on the inner wall of the sealed cylinder 2 to divide the upper and lower areas and to form a seal on the top of the nested annular filter element 804. The fan blade 803 rotates at high speed with the main shaft, generating a stable negative pressure field in the central area inside the nested annular filter element 804, forming an "inner suction" effect. This negative pressure forces the dust-laden carbon dioxide outside the sealed cylinder 2 to be drawn in radially and penetrate the filter element, overcoming the problems of insufficient flow velocity and low filtration efficiency that easily occur when relying solely on the system pipeline pressure drive. At the same time, the rotation of the nested annular filter element 804 generates centrifugal force, which throws the dust particles intercepted on the outer surface of the filter element radially outward. The "inward suction" of the fan blade 803 and the "outward throwing" of the filter element form a counterforce, making it difficult for a thick filter cake layer to form on the surface of the filter element. The pressure drop rise rate is extremely slow, realizing dynamic self-cleaning without backflushing gas and greatly reducing system energy consumption. At the same time, such as Figure 5 , Figure 7 and Figure 8 As shown, a swing arm 805 is uniformly rotatably connected to the side wall of the hollow main shaft 802. A counterweight rod 806 is hinged to the end of the swing arm 805. When the hollow main shaft 802 rotates at high speed, the swing arm 805 opens outward under the action of centrifugal force, and the counterweight rod 806 is further thrown outward. Multiple sets of through holes are opened on the counterweight rod 806. The operator can flexibly adjust the position of the counterweight according to the actual working conditions, change the centrifugal torque, and thus control the opening range of the swing arm 805. When it is necessary to increase the air disturbance intensity inside the filter element, the opening angle of the limiting sleeve 15 can be increased to allow the counterweight rod 806 to have a larger swing amplitude. Conversely, under conditions of low dust load, the angle can be adjusted to reduce unnecessary mechanical wear and energy consumption. This adjustable opening and closing angle mechanical structure allows the device to flexibly match the best operating parameters according to actual conditions such as the dust concentration of the incoming air and the degree of filter clogging, making it more widely applicable. A sleeve 9 is also fitted onto the hollow spindle 802. A rotating sleeve 11 is rotatably connected to the bottom of the sleeve 9 via a bearing. The side wall of the rotating sleeve 11 is engaged with the side wall of the swing arm 805 via a groove through a rod. As the swing arm 805 rotates, the rotating sleeve 11 is pulled down. A spring 10 is fitted onto the top of the sleeve 9 at the partition 7. When the hollow spindle 802 rotates at high speed, the swing arm 805 opens and drives the rotating sleeve 11 to move downward, thereby causing the sleeve 9 to compress the spring 10 and slide downward. When the speed of the hollow spindle 802 decreases or stops, the spring 10 releases its elastic force to push the sleeve 9 back to its original position. like Figure 5 and Figure 6 As shown, a side-flushing cleaning assembly 12 is provided on the side wall of the nested annular filter element 804 and fixed to the bottom of the sealed cylinder 2. This assembly cleverly utilizes the mechanical linkage caused by the change in the rotation speed of the hollow main shaft 802 to achieve online cleaning of the filter element side wall. The side-flushing cleaning assembly 12 includes a fixedly installed vertical cover 121, a lifting rod 122 slidably connected inside the vertical cover 121, a hanging plate 123 slidably connected inside the vertical cover 121 on the side of the lifting rod 122, and the two are hinged by a connecting rod. A cleaning brush is provided on the side of the hanging plate 123, and a suction tube 124 is installed on the inner wall of the vertical cover 121. A rocker arm 13 is rotatably connected to the top of the partition 7 and the end of the corresponding lifting rod 122. One end of the rocker arm 13 is slidably connected to the lifting rod 122, and the other end is abutted against the inner wall of the top of the sleeve 9 by means of ball bearings. The specific working process is as follows: When the system is filtering at high speed, the hollow main shaft 802 rotates at high speed and the swing arm 805 opens significantly. The sleeve 9 is pulled down through the rotating sleeve 11. During the downward movement of the sleeve 9, it contacts one end of the rocker arm 13, causing the lifting rod 122 connected to the other end of the rocker arm 13 to rise. The hanging plate 123 is pulled and separated from the side wall of the filter element, thus avoiding the brush from generating additional resistance to the high-efficiency filtration process or abrading the surface of the filter element. When the system enters the low-speed cleaning mode, the motor 801 slows down, the hollow main shaft 802 rotates less, the centrifugal force weakens, the swing arm 805 and the counterweight rod 806 retract inward, the spring 10 pushes the sleeve 9 to return to its original position, causing the rocker arm 13 to rock. The other end of the rocker arm 13 presses the lifting rod 122 downward. During the downward movement of the lifting rod 122, the hinged connecting rod pushes the hanging plate 123 to move laterally, so that the cleaning brushes are in close contact with the side wall of the nested annular filter element 804. At this time, although the rotation speed is low, the filter element is still in a slow rotation state. The brushes perform circumferential brushing on the surface of the filter element, brushing off the stubborn dust layer attached to the outer surface of the filter element. At the same time, the suction pipe 124 installed on the inner wall of the vertical cover 121 is connected to the external negative pressure suction system, forming a micro negative pressure environment in the local area brushed by the brushes, so that the brushed dust is promptly removed to prevent secondary dust pollution. The dust extracted by the suction pipe 124 of the side flushing cleaning component 12 can be led to an external collection device for centralized treatment through a pipeline, avoiding the accumulation of dust at the bottom of the sealed cylinder 2. Compared with the traditional cleaning method that requires stopping the machine for disassembly and cleaning or introducing high-pressure backflushing gas, this invention can complete the cleaning of the filter element surface by switching the rotation speed of its own rotational kinetic energy, realizing true online self-cleaning without stopping the machine or consuming air. Moreover, the cleaning timing and cleaning duration can be flexibly controlled by the operator according to the filter element pressure difference, greatly extending the filter element replacement cycle. In addition, such as Figure 2 As shown, a detection grid 6 is installed on the vertical pressure cylinder 1 to monitor large dust particles escaping from the middle filter layer into the branch pipe 4 in real time. When the filter element of the second-stage middle filter layer is partially damaged or penetrated, large dust particles will enter the branch pipe 4 with the airflow, impact the detection grid 6 and generate identifiable vibration or acoustic emission signals, prompting the operator to intervene in time and effectively protect the downstream third-stage fine filter layer from being damaged by high-energy particles.

[0019] In summary, the deep purification and drying device provided in this embodiment constructs a complete "filtration-self-cleaning-deep cleaning" three-in-one purification system through gradient interception of three sets of series filter elements, enhanced filtration by negative pressure internal suction driven by the rotation of fan blade 803, preliminary self-cleaning achieved by the centrifugal force of the rotating filter elements, and deep cleaning completed by the side flushing cleaning component 12 in low-speed mode. The entire cleaning process is triggered entirely by the speed adjustment of motor 801, without the need for additional pneumatic or hydraulic actuators. The structure is simple and reliable, with excellent explosion-proof performance, and is particularly suitable for high-pressure ultra-dry carbon dioxide recovery and treatment scenarios.

[0020] Example 2: For working conditions with heavy dust load or long-term continuous operation, this example further optimizes the matching logic between the swing angle of the counterweight rod 806 and the cleaning frequency. At the same time, the locking adjustment of the limit sleeve 15 is used to achieve precise control of the stroke of the side flushing cleaning component 12 hanging plate 123, ensuring that filter elements of different precision can obtain appropriate cleaning intensity. In Example 1, it was mentioned that the hanging plate 123 is driven by the lifting rod 122 in the following way: lifting to disengage and pressing to contact. Subsequently, the entire driving method is changed to lifting to contact and pressing to disengage. In this way, the contact intensity and time between the hanging plate 123 and the filter element can be effectively controlled. Because the nested annular filter elements 804 in the three sets of sealed cylinders 2 have different precision, their surface dust accumulation characteristics are significantly different. The particles intercepted by the coarse filter layer are large in size and heavy in mass, and are more likely to fall off under the action of centrifugal force, so the requirements for the contact pressure and brushing frequency of the cleaning brush are lower. The submicron-sized dust intercepted by the fine filter layer has strong adhesion and is not easy to fall off, requiring the brush to apply greater contact pressure and longer brushing time; To this end, the present invention slides and engages a semi-circular limiting sleeve 15 on the swing arm 805. By adjusting the locking position of the limiting sleeve 15, the opening angle of the counterweight rod 806 in each set of sealed cylinders 2 can be independently controlled. When a certain stage of filter element needs to be cleaned in an enhanced manner, the operator can reduce the opening angle of the limiting sleeve 15, so that the counterweight rod 806 can obtain a larger centrifugal opening amplitude at the same speed. The rotating sleeve 11 transmits a larger downward force, which increases the downward stroke of the sleeve 9. Then, through the lever amplification effect of the rocker arm 13, the lifting rod 122 is raised a longer distance, and finally the cleaning brush on the hanging plate 123 presses against the side wall of the filter element with greater pressure, achieving powerful cleaning. Conversely, for filter elements that are not easily clogged, such as coarse filter layers, the opening angle of the limiting sleeve 15 can be increased to limit the maximum opening range of the counterweight rod 806, thus avoiding unnecessary wear caused by excessive pressure from the brush. This separate and independently adjustable design allows the same set of rotary drive mechanisms to adapt to the different cleaning needs of filter elements of different precision, achieving precise progressive control of cleaning intensity. It should be noted that the entire fan blade 803 rotates together, and independent rotation control can be used later to prevent the dust that has been scraped off from being re-adsorbed onto the surface of the filter element. The invention features an ingenious structural design that integrates filtration, centrifugal self-cleaning, brush mechanical cleaning, and dust extraction into a single rotating system. The functions are decoupled and switched through a single variable: rotation speed. This ensures continuous high-efficiency filtration while addressing the industry pain point that traditional filter cleaning requires shutdown or the introduction of an auxiliary air source. The entire device is easy to maintain and has low operating costs, making it particularly suitable for carbon dioxide recovery and treatment production lines with extremely high requirements for continuous production.

[0021] The above are merely examples and descriptions of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A deep purification and drying device based on carbon dioxide recovery and treatment, characterized in that, include: The vertical pressure-bearing cylinder (1) has an annular surrounding structure and is equipped with a sealed cylinder (2) for fixing and supporting the sealed cylinder (2). The side walls are equipped with an air inlet pipe (3) and an air outlet pipe (5). The sealed cylinder (2) is arranged in a triangular vertical distribution on the vertical pressure cylinder (1) and fixed by bolts. The bottom of the sealed cylinder (2) located on the side of the air inlet pipe (3) is provided with a branch pipe (4) and connected to the air inlet pipe (3). At the same time, the side wall of the sealed cylinder (2) is connected to the bottom of the other sealed cylinder (2) through the branch pipe (4). The three sets of sealed cylinders (2) are connected by the bottom inlet and the side wall outlet branch pipe (4). The last sealed cylinder (2) side wall branch pipe (4) is connected to the air outlet pipe (5). The vertical rotating assembly (8) is located on the sealed cylinder (2) and includes a motor (801) set at the top of the sealed cylinder (2) and a hollow main shaft (802) that moves inside the sealed cylinder (2). A fan blade (803) is sleeved on the side wall of the hollow main shaft (802), and one end of the fan blade (803) is connected to the motor (801). A nested annular filter element (804) is fixedly connected to the other end of the hollow main shaft (802), and the nested annular filter element (804) is driven to rotate by the rotation of the motor (801). The partition (7) is installed on the inner wall of the sealed cylinder (2) to divide the upper and lower areas and is used to seal the top of the nested annular filter element (804).

2. The deep purification and drying device based on carbon dioxide recovery and treatment according to claim 1, characterized in that, The three sets of sealed cylinders (2) are equipped with nested annular filter elements (804), which are respectively annular stainless steel sintered felt, annular metal powder sintered porous tube and annular membrane PTFE composite mesh, with precision of 50μm, 10μm and 1μm respectively.

3. The deep purification and drying device based on carbon dioxide recovery treatment according to claim 2, characterized in that, The vertical rotating assembly (8) also includes a swing arm (805) and a counterweight rod (806). The swing arm (805) is uniformly rotatably connected to the side wall of the hollow main shaft (802). The counterweight rod (806) is hinged to the end of the swing arm (805). Multiple sets of through holes are set on the counterweight rod (806), and it rotates with the hollow main shaft (802) to accelerate the air flow inside the nested annular filter element (804).

4. The deep purification and drying device based on carbon dioxide recovery treatment according to claim 3, characterized in that, A semi-circular limiting sleeve (15) is slidably engaged on the swing arm (805), and the other side of the limiting sleeve (15) is locked by a nut. The semi-circular opening angle of the limiting sleeve (15) can be adjusted by interlacing adjustment. The counterweight rod (806) is sleeved on the limiting sleeve (15) and a stop block (14) is installed on one side. The swing angle of the counterweight rod (806) is limited by the cooperation between the stop block (14) and the limiting sleeve (15).

5. The deep purification and drying device based on carbon dioxide recovery treatment according to claim 4, characterized in that, A sleeve (9) is slidably mounted on the hollow main shaft (802). A rotating sleeve (11) is rotatably connected to the bottom of the sleeve (9) through a bearing. The side wall of the rotating sleeve (11) is engaged with the groove of the side wall of the swing arm through the rod body. The rotating sleeve (11) is pulled down as the swing arm (805) rotates. A spring (10) is mounted on the top of the sleeve (9) on the partition plate (7).

6. The deep purification and drying device based on carbon dioxide recovery treatment according to claim 5, characterized in that, The nested annular filter element (804) is fixed to the bottom of the sealed cylinder (2) and a side flushing cleaning component (12) is provided. The side flushing cleaning component (12) includes a fixed vertical cover (121), a lifting rod (122) is slidably connected inside the vertical cover (121), a hanging plate (123) is slidably connected inside the vertical cover (121) on the side of the lifting rod (122), and the two are hinged by a connecting rod. A cleaning brush is provided on the side of the hanging plate (123), and a suction tube (124) is installed on the inner wall of the vertical cover (121).

7. The deep purification and drying device based on carbon dioxide recovery treatment according to claim 6, characterized in that, A rocker arm (13) is rotatably connected to the top of the partition (7) and the end of the corresponding lifting rod (122). One end of the rocker arm (13) is slidably connected to the lifting rod (122), and the other side is connected to the inner wall of the top of the sleeve (9) by setting a ball bearing.

8. The deep purification and drying device based on carbon dioxide recovery and treatment according to claim 1, characterized in that, The vertical pressure cylinder (1) is equipped with a detection grid (6) for real-time monitoring of large dust particles escaping from the middle filter layer into the branch pipe (4).

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