Large-scale pretreatment cleaning device and method for carbon dioxide direct air trapping raw materials

Abstract

The invention discloses a carbon dioxide direct air trapping raw material large-scale pretreatment cleaning device and method, and aims to provide a cleaning device which can provide more powerful stirring to scatter agglomerated resin in the initial stage of the cleaning process and can reduce stirring resistance in the later stage of the cleaning process. The invention relates to a carbon dioxide direct air capture raw material large-scale pretreatment cleaning device and method. The large-scale pretreatment cleaning device for the carbon dioxide direct air capture raw materials comprises a heating separation assembly, a cleaning assembly and a cleaning assembly, the stirring device comprises a driving motor and stirring blades arranged in the heating cylinder; the anti-adhesion unit comprises a stirring plate which is fixed on the stirring blade and is close to the inner wall of the heating cylinder, and a guide cavity is formed in the stirring plate; the cleaning plate is arranged in the guide cavity in a sliding manner; the scattering assembly comprises a moving plate arranged in the guide cavity in a sliding mode and a plurality of scattering rods arranged on the moving plate, and the moving plate is in linkage with the cleaning plate; and the thermal telescopic mechanism drives the cleaning plate to move.

Description

Technical Field

[0001] This invention relates to the field of mixing and separation technology, specifically to a pretreatment and cleaning device and method for large-scale carbon dioxide direct air capture raw materials. Background Technology

[0002] In direct carbon dioxide air capture technology, functionalized resins such as amine resins are commonly used as adsorbents. After undergoing multiple adsorption-desorption cycles, these resins accumulate contaminants such as dust, metal oxides, and organic impurities on their surfaces and in their pores. These contaminants significantly reduce the adsorption capacity and kinetic performance of the resin, affecting the capture efficiency and economy of the entire direct carbon dioxide air capture system.

[0003] Currently, the large-scale cleaning and regeneration of such adsorption resins typically employs simple agitation cleaning or fluidized bed treatment. However, these current adsorption resin cleaning devices and methods suffer from significant technical bottlenecks. Specifically, the initial stage of the cleaning process requires strong dispersal of the agglomerated resin; in the later stages, to reduce agitation resistance and save energy, the number of agitation elements needs to be reduced to lower agitation resistance. However, existing adsorption resin cleaning devices are usually fixed in structure and cannot adjust the agitation elements according to different stages of the cleaning process, resulting in a contradiction between functionality and energy consumption. Therefore, there is an urgent need to improve the large-scale pretreatment cleaning device and method for carbon dioxide direct air capture raw materials to solve the aforementioned problems.

[0004] For example, Chinese Patent Publication No. CN221062763U describes an invention entitled "A Device for Cleaning Macroporous Adsorption Resin," which includes a cleaning tank, an air inlet pipe and a liquid outlet pipe connected to the cleaning tank, and a stirring mechanism. The stirring mechanism includes a stirring shaft, stirring blades fixedly connected to the stirring shaft, and a motor that drives the stirring shaft to rotate. The device improves the cleaning effect by stirring the resin through the stirring mechanism; however, it also has the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a carbon dioxide direct air capture raw material large-scale pretreatment cleaning device and method that can provide stronger stirring to break up agglomerated resin in the early stage of the cleaning process and reduce stirring resistance and save energy in the later stage of the cleaning process, thereby ensuring the cleaning effect while reducing energy consumption.

[0006] The technical solution of this invention is: A pretreatment and cleaning device for large-scale carbon dioxide direct air capture raw materials includes: Heating separation assembly, including a heating cylinder; A stirring device, including a drive motor and stirring blades disposed inside a heating cylinder; The anti-adhesion unit includes: A stirring plate is fixed on the stirring blades and close to the inner wall of the heating cylinder; a guide cavity is provided inside the stirring plate. The cleaning plate is slidably disposed within the guide cavity; The dispersing component includes a movable plate slidably disposed in the guide cavity and a number of dispersing rods disposed on the movable plate, the movable plate being linked with the cleaning plate; A thermo-expansion mechanism that drives the cleaning plate to move includes a thermo-expansion material.

[0007] When the internal temperature of the heating cylinder is lower than the set temperature, the cleaning plate extends out under the action of the thermal expansion mechanism and presses against the inner wall of the heating cylinder. At the same time, the cleaning plate drives the moving plate to move, so that the dispersing rod extends out of the guide cavity. When the internal temperature of the heating cylinder exceeds the set temperature, the thermo-expanding material expands, and the cleaning plate retracts into the guide cavity under the action of the thermo-expanding mechanism. Simultaneously, the cleaning plate moves the moving plate, causing the dispersing rod to retract into the guide cavity. This solution employs an anti-adhesion unit driven by thermo-expanding material. In the initial stage of the cleaning process (low-temperature cleaning stage), the cleaning plate extends and presses against the inner wall of the heating cylinder under the action of the thermo-expanding mechanism. As the cleaning plate rotates with the stirring blades, it scrapes away dirt from the inner wall of the heating cylinder. Simultaneously, the cleaning plate moves the moving plate, causing the dispersing rod to extend out of the guide cavity, providing stronger stirring to disperse the adhesive resin, thus performing the resin dispersing function. In the middle and later stages of the cleaning process (after the internal temperature of the heating cylinder exceeds the set temperature), the thermo-expanding material expands, and the cleaning plate automatically retracts into the guide cavity under the action of the thermo-expanding mechanism. Simultaneously, the cleaning plate moves the moving plate, causing the dispersing rod to retract into the guide cavity. This reduces the number of stirring elements, lowers stirring resistance, and saves energy, ensuring cleaning effectiveness while reducing energy consumption.

[0008] Preferably, the thermal expansion mechanism includes: The adjustment chamber is fixed on the cleaning plate. One end of the adjustment chamber is provided with a guide rod through hole, and the other end is provided with an air hole. A piston plate is slidably positioned within the adjustment chamber. One end of the piston plate has a guide rod, which is slidably and sealingly connected to a guide rod through-hole. One end of the guide rod is fixed to the stirring plate between the moving plate and the cleaning plate. A thermo-expandable material is placed within the adjustment chamber, with the guide rod and the thermo-expandable material located on the same side of the piston plate. Thus, when the internal temperature of the heating cylinder is lower than the set temperature, the thermo-expandable material is in a contracted state. At this time, the cleaning plate extends and presses against the inner wall of the heating cylinder under the action of the thermo-expandable mechanism; simultaneously, the cleaning plate moves the moving plate, causing the dispersing rod to extend out of the guide cavity. When the internal temperature of the heating cylinder is higher than the set temperature, the thermo-expandable material expands, and the cleaning plate contracts into the guide cavity under the action of the thermo-expandable mechanism. Simultaneously, the cleaning plate moves the moving plate, causing the dispersing rod to contract into the guide cavity.

[0009] Preferably, the moving plate and the cleaning plate are linked by a linkage assembly, which includes an inclined plate rotatably disposed within the guide cavity via a rotating shaft. The inclined plate has positioning shafts at both ends, one of which is slidably connected to the moving plate, and the other to the cleaning plate. Thus, as the moving plate extends out of the guide cavity, the inclined plate will cause the moving plate to move in the opposite direction, causing the dispersing rod to extend out of the guide cavity. Conversely, as the moving plate retracts into the guide cavity, the inclined plate will cause the moving plate to move in the opposite direction, causing the dispersing rod to retract into the guide cavity.

[0010] Preferably, the device also includes an outer casing, the upper end of which is connected to the heating cylinder; the stirring device further includes: The transmission unit includes an outer gear ring and an intermediate gear rotatably disposed inside an outer casing. A planetary gear meshes between the outer gear ring and the intermediate gear. The intermediate gear is fixedly connected to a transmission shaft. The drive motor drives the transmission shaft to rotate. The stirring blades include an inner spiral stirring blade and an outer spiral stirring blade. The inner spiral stirring blade is fixedly connected to the drive shaft, and the outer spiral stirring blade is fixed to the bottom surface of the outer gear ring. The stirring plate is fixed on the outer spiral stirring blade and extends vertically, close to the inner wall of the heating cylinder. This solution uses a drive motor to drive the transmission unit, causing the inner and outer spiral stirring blades to rotate in opposite directions. This creates a strong composite vortex and shear field inside the container. This bidirectional disturbance effectively disperses resin agglomerates, eliminates cleaning dead zones, and ensures that each resin particle is thoroughly rinsed by the water flow. Simultaneously, combined with the heating function, it effectively softens and removes stubborn impurities, thereby achieving large-scale, uniform, and thorough cleaning of a large amount of resin and ensuring the adsorption performance of the regenerated resin.

[0011] Preferably, the stirring plate extends vertically, is close to the inner wall of the heating cylinder, and has a discharge hole at the bottom that communicates with the bottom of the guide cavity. On the side of the stirring plate facing the center of the heating cylinder, there are several dispersing through holes that correspond one-to-one with the dispersing rods. The dispersing through holes are connected to the guide cavity, and the dispersing rods pass through the corresponding dispersing through holes. The guide cavity opens to the side facing the inner wall of the heating cylinder, and the cleaning plate can extend out from the opening on one side of the guide cavity.

[0012] Preferably, the cleaning plate includes a cleaning scraper with a removable cleaning layer on the side facing the inner wall of the heating cylinder. During operation, the cleaning plate uses the cleaning layer to scrape away dirt from the inner wall of the heating cylinder. This allows the cleaning layer to be replaced individually, extending the service life of the cleaning plate.

[0013] Preferably, the heating separation assembly also includes a removable filter screen and a drain valve located at the bottom of the heating cylinder. This solution, by installing a removable filter screen at the bottom of the heating cylinder, allows for the selection of a filter screen with an appropriate mesh size according to actual needs, achieving an optimal balance between effectively intercepting fine particulate impurities that cause resin loss and maintaining good drainage to prevent rapid clogging.

[0014] Preferably, the heating and separation assembly also includes a spinning impeller and an electric heating element mounted on the heating cylinder. The spinning impeller is rotatably positioned between the filter screen and the bottom of the heating cylinder. Thus, when the drain valve is opened, the spinning impeller automatically rotates under the action of the water flow, further preventing the filter screen from becoming clogged.

[0015] A cleaning method for a large-scale pretreatment and cleaning device for raw materials using direct carbon dioxide air capture includes the following steps: Add the resin and water into the heating cylinder; When the drive motor is powered on, the stirring blades stir the resin. The heating cylinder heats the resin and water to a set temperature. During this process, when the internal temperature of the heating cylinder is lower than the set temperature, the cleaning plate extends out under the action of the thermal expansion mechanism and presses against the inner wall of the heating cylinder. At the same time, the dispersing rod extends out of the guide cavity to disperse the adhesive resin. When the internal temperature of the heating cylinder is higher than the set temperature, the cleaning plate retracts into the guide cavity under the action of the thermal expansion mechanism, and at the same time, the dispersing rod retracts into the guide cavity. After setting the time, open the drain valve to drain the water and impurities, and then remove the resin.

[0016] The beneficial effects of this invention are: Firstly, an anti-adhesion unit driven by a thermo-expandable material is employed. In the initial stage of the cleaning process, the cleaning plate and dispersing rod extend out of the guide cavity. The cleaning plate presses against the inner wall of the heating cylinder, scraping away dirt; the dispersing rod extends out of the guide cavity, providing stronger agitation to disperse the adhesive resin. During the middle and later stages of the cleaning process, the thermo-expandable material expands, and the cleaning plate and dispersing rod retract into the guide cavity, thereby reducing the number of agitating elements, lowering agitation resistance, and saving energy. This ensures effective cleaning while reducing energy consumption.

[0017] Secondly, the counter-rotating inner and outer spiral stirring blades create a powerful composite vortex and shear field inside the container. This bidirectional disturbance effectively breaks up resin agglomerates, ensuring that each resin particle is thoroughly washed away by the water flow. Simultaneously, combined with the heating function, it effectively softens and removes stubborn impurities, thus achieving large-scale, uniform, and thorough cleaning of a large quantity of resin, guaranteeing the adsorption performance of the regenerated resin.

[0018] Thirdly, in practical applications, a filter with a suitable mesh size can be selected according to actual needs to achieve the best balance between effectively intercepting fine particulate impurities that cause resin loss and maintaining good drainage and preventing rapid clogging. Attached Figure Description

[0019] Figure 1 This is an exploded view of the carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device of the present invention.

[0020] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0021] Figure 3 This is a schematic diagram of a structure at the transmission unit of the present invention.

[0022] Figure 4 This is a schematic diagram of the anti-adhesion unit of the present invention.

[0023] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle.

[0024] Figure 6 This is a cross-sectional structural diagram of the cleaning plate of the present invention.

[0025] Figure 7 yes Figure 6 A magnified view of a section at point C.

[0026] In the picture: Outer casing 1; Drive motor 2; Transmission unit 3, external gear ring 31, planetary gear 32, intermediate gear 33, transmission shaft 34; 4 internal spiral stirring blades; 5 outer spiral stirring blades; Anti-adhesion unit 6, stirring plate 61, guide cavity 611, discharge hole 612, dispersing through hole 613, cleaning plate 62, cleaning scraper 621, cleaning layer 622, fixing plate 623, guide rod 624, adjusting cavity 625, air hole 626, piston plate 627, thermally expandable material 628; dispersing assembly 63, moving plate 631, dispersing rod 632, linkage assembly 64, inclined plate 641, rotating shaft 642, positioning shaft 643, slide groove 644; Heating separation component 7, heating cylinder 71, drain valve 72, rotating impeller 73, filter screen 74. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Specific Implementation Example 1, such as Figures 1-7As shown, a pretreatment and cleaning device for large-scale carbon dioxide direct air capture raw materials includes a heating and separation component 7, a stirring device, and an anti-sticking unit 6.

[0028] The heating separation assembly 7 includes a heating cylinder 71, a removable filter screen 74 located at the bottom of the heating cylinder 71, and a drain valve 72. The heating cylinder 71 is cylindrical. The upper end of the heating cylinder 71 is open, and the lower end is closed. The drain valve 72 is located at the lower end of the heating cylinder 71.

[0029] The stirring device includes stirring blades disposed in the heating cylinder 71 and a drive motor 2 for driving the stirring blades to rotate.

[0030] The anti-sticking unit 6 includes a stirring plate 61, a cleaning plate 62, a dispersing component 63, and a thermal expansion mechanism.

[0031] The stirring plate 61 is fixed on the stirring blade and is close to the inner wall of the heating cylinder 71. The stirring plate 61 extends axially along the heating cylinder 71. A guide cavity 611 is provided inside the stirring plate 61.

[0032] The cleaning plate 62 is slidably disposed in the guide cavity 611. In this embodiment, the cleaning plate 62 slides radially along the heating cylinder 71. The cleaning plate 62 can move to the outside of the stirring plate 61 and abut against the inner wall of the heating cylinder 71.

[0033] The dispersing assembly 63 includes a movable plate 631 slidably disposed within the guide cavity 611 and a plurality of dispersing rods 632 disposed on the movable plate 631. In this embodiment, the movable plate 631 slides radially along the heating cylinder 71, and the dispersing rods 632 can move to the outside of the stirring plate 61. The movable plate 631 is linked with the cleaning plate 62.

[0034] A thermal expansion mechanism drives the cleaning plate 62 to move; the thermal expansion mechanism is located within the stirring plate 61. The thermal expansion mechanism includes a thermal expansion material 628.

[0035] When the internal temperature of the heating cylinder 71 is lower than the set temperature, the thermal expansion material 628 is in a contracted state. The cleaning plate 62 extends out and presses against the inner wall of the heating cylinder 71 under the action of the thermal expansion mechanism. At the same time, the cleaning plate 62 drives the moving plate 631 to move, so that the dispersing rod 632 extends out of the guide cavity 611.

[0036] When the internal temperature of the heating cylinder 71 is higher than the set temperature, the thermal expansion material 628 expands, and the cleaning plate 62 contracts into the guide cavity 611 under the action of the thermal expansion mechanism. At the same time, the cleaning plate 62 drives the moving plate 631 to move, so that the dispersing rod 632 contracts into the guide cavity 611.

[0037] This embodiment employs an anti-adhesion unit 6 driven by a thermo-expandable material 628. In the initial stage of the cleaning process (low-temperature cleaning stage), the cleaning plate 62 extends and presses against the inner wall of the heating cylinder 71 under the action of the thermo-expandable mechanism. As the cleaning plate 62 rotates with the stirring blades, it scrapes away dirt from the inner wall of the heating cylinder 71. Simultaneously, the cleaning plate 62 moves the moving plate 631, causing the dispersing rod 632 to extend outside the guide cavity 611, providing stronger stirring to disperse the adhesive resin and performing the resin dispersing function. During the middle and later stages of the cleaning process (after the internal temperature of the heating cylinder 71 exceeds the set temperature), the thermo-expandable material 628 expands, and the cleaning plate 62 automatically retracts into the guide cavity 611 under the action of the thermo-expandable mechanism. Simultaneously, the cleaning plate 62 moves the moving plate 631, causing the dispersing rod 632 to retract into the guide cavity 611. This reduces the number of stirring elements, lowers stirring resistance, and saves energy, ensuring cleaning effectiveness while reducing energy consumption.

[0038] Specific embodiment two, such as Figures 1-7 As shown, a pretreatment and cleaning device for large-scale carbon dioxide direct air capture raw materials includes an outer casing 1, a heating and separation component 7, a stirring device, and an anti-sticking unit 6.

[0039] The heating and separation assembly 7 includes a heating cylinder 71, a removable filter screen 74 and a drain valve 72 located at the bottom of the heating cylinder 71, and an electric heating element located on the heating cylinder 71. The electric heating element is an electric heating rod, an electric heating wire, or other commercially available electric heating element. The heating cylinder 71 is cylindrical. The heating cylinder 71 is open at the top and closed at the bottom, with the drain valve 72 located at the bottom of the heating cylinder 71. The axis of the heating cylinder 71 is vertically distributed. The upper end of the heating cylinder 71 is connected to the outer casing 1. A material inlet / outlet is provided on the top of the side wall of the heating cylinder 71, or on the top of the outer casing 1. The resin to be treated is added into the heating cylinder 71 through the material inlet / outlet.

[0040] The stirring device includes stirring blades disposed in the heating cylinder 71 and a drive motor 2 for driving the stirring blades to rotate.

[0041] In one embodiment, such as Figure 1 , Figure 3As shown, the stirring device also includes a transmission unit 3. The transmission unit 3 includes an outer gear ring 31 and an intermediate gear 33 rotatably disposed within the outer casing 1. The intermediate gear 33 is located at the center of the outer gear ring 31. Planetary gears 32 mesh between the outer gear ring 31 and the intermediate gear 33. There are one or more planetary gears 32; in this embodiment, there are two planetary gears 32, symmetrically distributed on both sides of the intermediate gear 33. The intermediate gear 33 is fixedly connected to a transmission shaft 34. The transmission shaft 34 is coaxially distributed with the heating cylinder 71. The drive motor 2 drives the transmission shaft 34 to rotate, thereby causing the intermediate gear 33 and the outer gear ring 31 to rotate in opposite directions. The stirring blades consist of an inner spiral stirring blade 4 and an outer spiral stirring blade 5. The inner spiral stirring blade 4 is fixedly connected to the transmission shaft. The rotation shaft 642 of the inner spiral stirring blade 4 is coaxial with the transmission shaft. The inner spiral stirring blade 4 is located at the center of the heating cylinder 71. The outer spiral stirring blade 5 is fixed to the bottom surface of the outer gear ring 31. The rotation shaft 642 of the outer spiral stirring blade 5 is coaxial with the transmission shaft. The outer spiral stirring blade 5 extends in a spiral shape and is close to the inner wall of the heating cylinder 71. In this embodiment, the drive motor 2 drives the transmission unit 3 to make the inner spiral stirring blade 4 and the outer spiral stirring blade 5 rotate in opposite directions, forming a strong composite vortex and shear field inside the container. This bidirectional disturbance can fully disperse resin agglomerates, eliminate cleaning dead corners, and ensure that each resin particle can be fully rinsed by the water flow. At the same time, combined with the heating function, it effectively softens and removes stubborn impurities, thereby achieving large-scale, uniform and thorough cleaning of a large amount of resin and ensuring the adsorption performance of the regenerated resin.

[0042] In the second embodiment, the stirring device further includes a drive shaft rotatably disposed within the outer casing 1. The drive shaft is coaxially distributed with the heating cylinder 71. The drive motor 2 drives the drive shaft to rotate. The stirring blades consist of inner spiral stirring blades 4. The inner spiral stirring blades 4 are fixedly connected to the drive shaft. The rotation axis 642 of the inner spiral stirring blades 4 is coaxial with the drive shaft. The inner spiral stirring blades 4 are located at the center of the heating cylinder 71. In this embodiment, the drive motor 2 drives the drive shaft to rotate, and the drive shaft drives the inner spiral stirring blades 4 to rotate, forming a vortex inside the container, which fully disperses the resin agglomerates; at the same time, combined with the heating function, it effectively softens and removes stubborn impurities, thereby achieving large-scale, uniform and thorough cleaning of a large amount of resin, ensuring the adsorption performance of the regenerated resin.

[0043] In the third embodiment, the stirring device further includes a drive shaft rotatably disposed within the outer casing 1. The drive shaft is coaxially distributed with the heating cylinder 71. The drive motor 2 drives the drive shaft to rotate. The stirring blades consist of outer spiral stirring blades 5. The outer spiral stirring blades 5 are fixedly connected to the drive shaft. The rotation axis 642 of the outer spiral stirring blades 5 is coaxial with the drive shaft. The outer spiral stirring blades 5 extend spirally and are close to the inner wall of the heating cylinder 71. In this embodiment, the drive motor 2 drives the drive shaft to rotate, and the drive shaft drives the outer spiral stirring blades 5 to rotate, forming a vortex inside the container, which fully disperses the resin agglomerates; at the same time, combined with the heating function, it effectively softens and removes stubborn impurities, thereby achieving large-scale, uniform and thorough cleaning of a large amount of resin, ensuring the adsorption performance of the regenerated resin.

[0044] The anti-sticking unit 6 includes a stirring plate 61, a cleaning plate 62, a dispersing component 63, and a thermal expansion mechanism.

[0045] The stirring plate 61 is fixed on the stirring blade and is close to the inner wall of the heating cylinder 71. The stirring plate 61 extends axially along the heating cylinder 71. A guide cavity 611 is provided inside the stirring plate 61.

[0046] The stirring plate 61 consists of one or more pieces, which are evenly distributed around the heating cylinder 71. In this embodiment, there are two stirring plates 61. The cleaning plate 62 corresponds to one stirring plate 61. The dispersing component 63 corresponds to one stirring plate 61. A thermal expansion mechanism is provided in the stirring plate 61, and each stirring plate 61 has one or more thermal expansion mechanisms.

[0047] In one implementation, such as Figure 1 The stirring blades consist of an inner spiral stirring blade 4 and an outer spiral stirring blade 5. In this embodiment, the stirring plate 61 is fixed on the outer spiral stirring blade 5. The stirring plate 61 extends vertically and is close to the inner wall of the heating cylinder 71.

[0048] In the second embodiment, the stirring blades are composed of inner spiral stirring blades 4. In this embodiment, a stirring plate 61 is fixed on the inner spiral stirring blades 4. The stirring plate 61 extends vertically and is close to the inner wall of the heating cylinder 71.

[0049] In the third embodiment, the stirring blades are composed of outer spiral stirring blades 5. In this embodiment, a stirring plate 61 is fixed on the outer spiral stirring blades 5. The stirring plate 61 extends vertically and is close to the inner wall of the heating cylinder 71.

[0050] The cleaning plate 62 is slidably disposed in the guide cavity 611. In this embodiment, the cleaning plate 62 slides radially along the heating cylinder 71. The cleaning plate 62 can move to the outside of the stirring plate 61 and abut against the inner wall of the heating cylinder 71.

[0051] The dispersing assembly 63 includes a movable plate 631 slidably disposed within the guide cavity 611 and a plurality of dispersing rods 632 disposed on the movable plate 631. In this embodiment, the movable plate 631 slides radially along the heating cylinder 71, and the dispersing rods 632 can move to the outside of the stirring plate 61. Specifically, a plurality of dispersing through holes 613 corresponding one-to-one with the dispersing rods 632 are provided on the side of the stirring plate 61 facing the center of the heating cylinder 71. The dispersing through holes 613 are connected to the guide cavity 611, and the dispersing rods 632 pass through the corresponding dispersing through holes 613. The guide cavity 611 has an opening on the side facing the inner wall of the heating cylinder 71, and the cleaning plate 62 can extend out from the opening on one side of the guide cavity 611.

[0052] The moving plate 631 is linked with the cleaning plate 62. Specifically, the moving plate 631 and the cleaning plate 62 are linked through the linkage component 64.

[0053] In one implementation, such as Figure 4 , Figure 5 As shown, the linkage component 64 includes an inclined plate 641 rotatably disposed within a guide cavity 611 via a rotating shaft 642. The rotating shaft 642 is fixed to the inner wall of the guide cavity 611 and is located between a moving plate 631 and a cleaning plate 62. Positioning shafts 643 are provided at both ends of the inclined plate 641, one of which is slidably connected to the moving plate 631, and the other is slidably connected to the cleaning plate 62. Specifically, both the moving plate 631 and the cleaning plate 62 are disposed in a sliding groove 644, which extends vertically. The positioning shaft 643 at one end of the inclined plate 641 is slidably disposed within the sliding groove 644 of the moving plate 631, and the positioning shaft 643 at the other end of the inclined plate 641 is slidably disposed within the sliding groove 644 of the cleaning plate 62. Thus, as the moving plate 631 extends outward from the guide cavity 611, the inclined plate 641 will drive the moving plate 631 to move in the opposite direction, causing the dispersing rod 632 to extend outward from the guide cavity 611. As the moving plate 631 retracts into the guide cavity 611, the inclined plate 641 will drive the moving plate 631 to move in the opposite direction, causing the dispersing rod 632 to retract into the guide cavity 611.

[0054] In another embodiment, the linkage assembly 64 includes a linkage gear and two racks meshing with the linkage gear. The linkage gear is rotatably mounted in the guide cavity 611 via a rotating shaft 642, and is located between the moving plate 631 and the cleaning plate 62. The racks are horizontally distributed, with two racks positioned on the upper and lower sides of the linkage gear. One rack is fixed to the moving plate 631, and the other rack is fixed to the cleaning plate 62. Thus, as the moving plate 631 extends outward from the guide cavity 611, the two racks mesh with the linkage gear, causing the moving plate 631 to move in the opposite direction, causing the dispersing rod 632 to extend outward from the guide cavity 611. As the moving plate 631 retracts into the guide cavity 611, the two racks mesh with the linkage gear, causing the moving plate 631 to move in the opposite direction, causing the dispersing rod 632 to retract into the guide cavity 611.

[0055] like Figures 4-7 As shown, a thermal expansion mechanism drives the cleaning plate 62 to move. The thermal expansion mechanism includes a thermal expansion material 628.

[0056] When the internal temperature of the heating cylinder 71 is lower than the set temperature (in this embodiment, the set temperature is 40 degrees), the thermal expansion material 628 is in a contracted state, and the cleaning plate 62 extends out and abuts against the inner wall of the heating cylinder 71 under the action of the thermal expansion mechanism. At the same time, the cleaning plate 62 drives the moving plate 631 to move, so that the dispersing rod 632 extends out of the guide cavity 611.

[0057] When the internal temperature of the heating cylinder 71 exceeds the set temperature, the thermal expansion material 628 expands, and the cleaning plate 62 retracts into the guide cavity 611 under the action of the thermal expansion mechanism. Simultaneously, the cleaning plate 62 drives the moving plate 631 to move, causing the dispersing rod 632 to retract into the guide cavity 611. Specifically, The thermal expansion mechanism includes an adjustment cavity 625 and a piston plate 627. The adjustment cavity 625 is fixed to the cleaning plate 62. One end of the adjustment cavity 625 is provided with a guide rod through hole, and the other end of the adjustment cavity 625 is provided with an air hole 626.

[0058] In one example, such as Figure 7 As shown, the adjustment cavity 625 is directly disposed within the cleaning plate 62, and the axis of the adjustment cavity 625 is parallel to the moving direction of the cleaning plate 62. The guide rod through hole and the air hole are both directly disposed within the cleaning plate 62.

[0059] In another example, the thermal expansion mechanism also includes a cylinder, the inner cavity of which forms the adjustment chamber 625. The cylinder is fixed to one side of the cleaning plate 62, and the axis of the adjustment chamber 625 is parallel to the direction of movement of the cleaning plate 62. Guide rod through holes and air holes are both provided on the cylinder.

[0060] Piston plate 627 is slidably disposed within adjustment cavity 625. A guide rod 624 is provided at one end of piston plate 627. The guide rod 624 passes through a guide rod through hole, and the guide rod 624 is slidably and sealingly connected to the guide rod through hole. One end of guide rod 624 is fixed to stirring plate 61 between moving plate 631 and cleaning plate 62. In this embodiment, a fixing plate 623 is fixed to one end of guide rod 624, and the fixing plate 623 is fixed to stirring plate 61 between moving plate 631 and cleaning plate 62. Thermally expandable material 628 is disposed within adjustment cavity 625, and guide rod 624 and thermally expandable material 628 are located on the same side of piston plate 627. Thus, when the internal temperature of heating cylinder 71 is lower than the set temperature, thermally expandable material 628 is in a contracted state. At this time, cleaning plate 62 extends out and abuts against the inner wall of heating cylinder 71 under the action of the thermally expandable mechanism; simultaneously, cleaning plate 62 drives moving plate 631 to move, causing dispersing rod 632 to extend outside guide cavity 611. When the internal temperature of the heating cylinder 71 is higher than the set temperature, the thermal expansion material 628 expands, and the cleaning plate 62 contracts into the guide cavity 611 under the action of the thermal expansion mechanism. At the same time, the cleaning plate 62 drives the moving plate 631 to move, so that the dispersing rod 632 contracts into the guide cavity 611.

[0061] In one example, the thermally expandable material 628 is composed of paraffin wax, ethylene vinyl acetate (EVA), and flake graphite. Paraffin wax (such as Fischer-Tropsch wax) with a melting point of 38-42℃ is used as the phase change expansion medium and is uniformly dispersed in a flexible ethylene vinyl acetate (EVA) polymer framework. At the same time, highly thermally conductive flake graphite is added. On the one hand, it promotes rapid heat transfer to make the paraffin wax melt synchronously. The significant volume expansion (about 10-15%) during the phase change of paraffin wax drives the overall material expansion. On the other hand, the graphite flakes form micro-bridges in the matrix, inhibiting the thermoelastic shrinkage of EVA and synergistically enhancing the net expansion effect. Finally, the phase change expansion force of paraffin wax overcomes the elastic recovery of EVA, so that the composite material accurately exhibits significant thermal expansion behavior at 40℃.

[0062] In another example, the thermally expandable material 628 is composed of paraffin wax and ethylene vinyl acetate (EVA). Paraffin wax (such as Fischer-Tropsch wax) with a melting point of 38-42°C is used as a phase change expansion medium and is uniformly dispersed in a flexible ethylene vinyl acetate (EVA) polymer framework. The significant volume expansion (about 10-15%) during the phase change of paraffin wax drives the expansion of the entire material, so that the composite material precisely exhibits significant thermal expansion behavior at 40°C.

[0063] In the third example, the thermal expansion material 628 is composed of paraffin wax, which uses paraffin wax (such as Fischer-Tropsch wax) with a melting point of 38-42°C as a phase change expansion medium. It utilizes the significant volume expansion (about 10-15%) during the phase change of paraffin wax to drive the overall material expansion, so that the composite material accurately exhibits significant thermal expansion behavior at 40°C.

[0064] The specific use of the carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device in this embodiment is as follows. Add the resin and water into the heating cylinder 71.

[0065] When the drive motor 2 is powered on, it drives the stirring blades to rotate, thereby stirring the resin in the heating cylinder 71.

[0066] When the electric heating element is energized, it heats the resin and water to the set temperature. During the process of heating the resin and water to the set temperature, when the internal temperature of the heating cylinder 71 is 40 degrees lower than the set temperature (at the beginning of the cleaning process), the thermal expansion material 628 is in a contracted state. The cleaning plate 62 extends out under the action of the thermal expansion mechanism and presses against the inner wall of the heating cylinder 71. As the cleaning plate 62 rotates with the stirring blades, it can scrape off the dirt on the inner wall of the heating cylinder 71. At the same time, the cleaning plate 62 drives the moving plate 631 to move, so that the dispersing rod 632 extends out of the guide cavity 611, providing stronger stirring to disperse the adhesive resin and perform the resin dispersing function.

[0067] As the cleaning process progresses, when the internal temperature of the heating cylinder 71 exceeds the set temperature by 40 degrees (during the middle and later stages of the cleaning process), the thermo-expansion material 628 expands, and the cleaning plate 62 contracts into the guide cavity 611 under the action of the thermo-expansion mechanism. At the same time, the dispersing rod 632 contracts into the guide cavity 611. This reduces the number of stirring elements, lowers stirring resistance, and saves energy, thus reducing energy consumption while ensuring the cleaning effect.

[0068] After the set time is completed and cleaning is finished, open the drain valve 72 to drain the water and impurities. The filter screen 74 retains the resin in the heating cylinder 71, and then the resin is removed.

[0069] The mesh size of filter 74 can be selected according to actual needs. In this embodiment, a 300-mesh filter 74 is selected to achieve the best balance between effectively intercepting fine particulate impurities that cause resin loss and maintaining good drainage and preventing rapid clogging. The selection of 300 mesh instead of coarser or finer meshes is based on the following trade-offs: Coarser filter screens (such as 100 mesh, 150μm) drain water faster and are less prone to clogging, but they cannot effectively intercept fine resin, which may result in the loss of some smaller resin particles.

[0070] Finer filter screens (e.g., 500 mesh, 25μm) can intercept even smaller impurities, but they are extremely prone to clogging: small impurities quickly block the filter pores, requiring frequent cleaning, and the drainage speed is slow, increasing cleaning time and energy consumption.

[0071] Furthermore, such as Figure 2As shown, the heating and separation assembly 7 also includes a spinning impeller 73, which is rotatably disposed between the filter screen 74 and the bottom end of the heating cylinder 71. The spinning impeller 73 can be directly mounted on the filter screen 74, or directly mounted on the bottom end of the heating cylinder 71. Thus, after the drain valve 72 is opened, the spinning impeller 73 automatically rotates under the action of water flow, further preventing the filter screen 74 from clogging.

[0072] Furthermore, such as Figure 5 As shown, the cleaning plate 62 includes a cleaning scraper 621, and a removable cleaning layer 622 is provided on the side of the cleaning scraper 621 facing the inner wall of the heating cylinder 71. In actual operation, the cleaning plate 62, through the cleaning layer 622, presses against the inner wall of the heating cylinder 71 to scrape away dirt on the inner wall of the heating cylinder 71. In this way, the cleaning layer 622 can be replaced separately to extend the service life of the cleaning plate 62.

[0073] Furthermore, such as Figure 5 As shown, the bottom of the stirring plate 61 is provided with a discharge hole 612 that communicates with the bottom of the guide cavity 611. In this way, fine resin particles that enter the guide cavity 611 can be discharged through the discharge hole.

[0074] Specific embodiment three: A method for large-scale pretreatment and cleaning of carbon dioxide direct air capture (CAFC) feedstock, utilizing a CAFC feedstock large-scale pretreatment and cleaning device. The specific structure of the CAFC feedstock large-scale pretreatment and cleaning device is described in specific embodiment two.

[0075] A method for large-scale pretreatment and cleaning of carbon dioxide direct air capture feedstock includes the following steps: S1, add the set amount of resin and water into the heating cylinder 71.

[0076] S2, drive motor 2 is energized, and the resin is stirred by the stirring blades.

[0077] The electric heating element of the heating cylinder 71 is energized to heat the resin and water to the set temperature. During this process, when the internal temperature of the heating cylinder 71 is 40 degrees below the set temperature, the cleaning plate 62 extends under the action of the thermal expansion mechanism and presses against the inner wall of the heating cylinder 71. The cleaning plate 62 scrapes away the dirt on the inner wall of the heating cylinder 71 as it rotates with the stirring blades. At the same time, the cleaning plate 62 drives the moving plate 631 to move, so that the dispersing rod 632 extends out of the guide cavity 611 to disperse the adhesive resin. The dispersing rod 632 can provide stronger stirring to disperse the adhesive resin, thus performing the function of dispersing the resin.

[0078] When the internal temperature of the heating cylinder 71 is higher than the set temperature of 40°C, the thermal expansion material 628 expands, and the cleaning plate 62 contracts into the guide cavity 611 under the action of the thermal expansion mechanism. At the same time, the dispersing rod 632 contracts into the guide cavity 611. This reduces the number of stirring elements, lowers the stirring resistance, and saves energy. While ensuring the cleaning effect, it also reduces energy consumption.

[0079] S3, after the set time, the drive motor 2 and the electric heating element stop working, the drain valve 72 is opened to drain the water and impurities, and then the cleaned resin is taken out. After the resin is removed, the filter screen 74 is disassembled and cleaned, completing one cleaning process.

[0080] Finally, if the resin cleaning does not meet the requirements, repeat steps S1-S3 until the resin cleaning meets the requirements.

[0081] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, alterations, and equivalent transformations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A pretreatment and cleaning device for large-scale carbon dioxide direct air capture raw materials, characterized in that, include: Heating separation assembly, including a heating cylinder; A stirring device, including a drive motor and stirring blades disposed inside a heating cylinder; The anti-adhesion unit includes: A stirring plate is fixed on the stirring blades and close to the inner wall of the heating cylinder; a guide cavity is provided inside the stirring plate. The cleaning plate is slidably disposed within the guide cavity; The dispersing component includes a movable plate slidably disposed in the guide cavity and a number of dispersing rods disposed on the movable plate, the movable plate being linked with the cleaning plate; A thermo-expansion mechanism that drives the cleaning plate to move includes a thermo-expansion material.

2. The carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device according to claim 1, characterized in that, When the internal temperature of the heating cylinder is lower than the set temperature, the cleaning plate extends out under the action of the thermal expansion mechanism and presses against the inner wall of the heating cylinder. At the same time, the cleaning plate drives the moving plate to move, so that the dispersing rod extends out of the guide cavity. When the internal temperature of the heating cylinder is higher than the set temperature, the thermal expansion material expands, and the cleaning plate contracts into the guide cavity under the action of the thermal expansion mechanism. At the same time, the cleaning plate drives the moving plate to move, causing the dispersing rod to contract into the guide cavity.

3. The carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device according to claim 1, characterized in that, The thermal expansion mechanism includes: The adjustment chamber is fixed on the cleaning plate. One end of the adjustment chamber is provided with a guide rod through hole, and the other end is provided with an air hole. A piston plate is slidably disposed in the adjustment cavity. A guide rod is provided at one end of the piston plate. The guide rod is slidably and sealed to the guide rod through hole. One end of the guide rod is fixed to the stirring plate between the moving plate and the cleaning plate. The thermo-expandable material is disposed in the adjustment cavity. The guide rod and the thermo-expandable material are located on the same side of the piston plate.

4. The carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device according to claim 1, characterized in that, The moving plate and the cleaning plate are linked by a linkage assembly, which includes an inclined plate that is rotatably disposed in the guide cavity via a rotating shaft. The inclined plate has positioning shafts at both ends, one of which is slidably connected to the moving plate and the other is slidably connected to the cleaning plate.

5. The carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device according to claim 1, 2, 3, or 4, characterized in that, It also includes an outer casing, the upper end of which is connected to the heating cylinder; the stirring device further includes: The transmission unit includes an outer gear ring and an intermediate gear rotatably disposed inside an outer casing. A planetary gear meshes between the outer gear ring and the intermediate gear. The intermediate gear is fixedly connected to a transmission shaft. The drive motor drives the transmission shaft to rotate. The stirring blades include an inner spiral stirring blade and an outer spiral stirring blade. The inner spiral stirring blade is fixedly connected to the drive shaft, and the outer spiral stirring blade is fixed to the bottom surface of the outer gear ring. The stirring plate is fixed on the outer spiral stirring blade and extends vertically, with the stirring plate close to the inner wall of the heating cylinder.

6. The carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device according to claim 1, 2, 3, or 4, characterized in that, The stirring plate extends vertically and is close to the inner wall of the heating cylinder. The bottom of the stirring plate is provided with a discharge hole that communicates with the bottom of the guide cavity. On the side of the stirring plate facing the center of the heating cylinder, there are several dispersing through holes that correspond one-to-one with the dispersing rods. The dispersing through holes are connected to the guide cavity, and the dispersing rods pass through the corresponding dispersing through holes. The guide cavity opens to the inner wall of the heating cylinder, and the cleaning plate can extend out from the opening on one side of the guide cavity.

7. The carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device according to claim 1, 2, 3, or 4, characterized in that, The cleaning plate includes a cleaning scraper, on which a removable cleaning layer is provided on the side facing the inner wall of the heating cylinder.

8. The carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device according to claim 1, 2, 3, or 4, characterized in that, The heating separation assembly also includes a detachable filter and a drain valve located at the bottom of the heating cylinder.

9. The carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device according to claim 8, characterized in that, The heating and separation assembly also includes a spinning impeller and an electric heating element disposed on the heating cylinder. The spinning impeller is rotatably disposed between the filter screen and the bottom end of the heating cylinder.

10. A cleaning method using the carbon dioxide direct air capture raw material large-scale pretreatment and cleaning device according to any one of claims 1-9, characterized in that, Includes the following steps, Add the resin and water into the heating cylinder; When the drive motor is powered on, the stirring blades stir the resin. The heating cylinder heats the resin and water to a set temperature. During this process, when the internal temperature of the heating cylinder is lower than the set temperature, the cleaning plate extends out under the action of the thermal expansion mechanism and presses against the inner wall of the heating cylinder. At the same time, the dispersing rod extends out of the guide cavity to disperse the adhesive resin. When the internal temperature of the heating cylinder is higher than the set temperature, the cleaning plate retracts into the guide cavity under the action of the thermal expansion mechanism, and at the same time, the dispersing rod retracts into the guide cavity. After setting the time, open the drain valve to drain the water and impurities, and then remove the resin.

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