Cement kiln carbon dioxide capture and flue gas purification integrated device

Abstract

The invention discloses a cement kiln carbon dioxide capture and flue gas purification integrated device which comprises a regeneration tower, an exhaust cylinder, a purification cylinder and a cylindrical roller, the regeneration tower is used for separating carbon dioxide in flue gas and is connected with the purification cylinder through the exhaust cylinder, and the cylindrical roller, a carrying purification mechanism and an auxiliary mechanism are arranged in the purification cylinder; the purification mechanism is composed of a movable groove and a filter plate, automatic stretching and retracting of the filter plate are achieved through a cylindrical block and a cam groove, the filtering efficiency is improved, the auxiliary mechanism sprays an adsorbent through a U-shaped pipe and an atomization nozzle, and the carbon dioxide capturing effect is enhanced; according to the device, the flue gas purification efficiency is improved, carbon dioxide is effectively captured, the maintenance cost is reduced, and an environment-friendly solution is provided for the cement industry.

Description

Technical Field

[0001] The invention relates to the technical field of carbon dioxide capture and flue gas purification in cement kilns, and in particular to an integrated device for carbon dioxide capture and flue gas purification in cement kilns. Background Art

[0002] During cement production, limestone (calcium carbonate) decomposes at high temperatures to produce calcium oxide (clinker) and carbon dioxide (CO2), which is one of the main sources of carbon emissions in the cement industry. Carbon dioxide is one of the most important greenhouse gases, and its increase will lead to an intensification of the greenhouse effect in the atmosphere, increasing the absorption of solar radiation by the earth's surface, leading to rising global temperatures. In addition, the flue gas from cement kilns also contains various harmful gases and particulate matter, such as sulfur oxides (SOx), nitrogen oxides (NOx) and dust, which pollute the environment. Therefore, how to effectively capture CO2 and purify flue gas while improving cement production efficiency has become a problem that the current cement industry needs to solve.

[0003] The existing Chinese patent with publication number CN117298766A includes an absorption tower. The specific steps of desulfurization are as follows: Step 1: When the gas enters the smoke inlet pipe of the absorption tower, the gas blows the driving component to rotate, and at this time the driving component will drive the dredging component to clean the impurities adsorbed on the dust removal equipment; Step 2: During the reciprocating movement of the dredging component, the dredging component will dredge the impurities in the holes of the dust removal equipment so that the subsequent incoming gas can be continuously purified; Step 3: During the movement of the dredging component, the dredging component will drive the cleaning component to move synchronously, and the cleaning component will collect the impurities cleaned in the holes of the dust removal equipment in a centralized manner.

[0004] When the above-mentioned device is in use, the driving component is driven by the continuously entering gas, so that the driving component can drive the unblocking component to clean the dust removal equipment. The holes of the dust removal equipment can be cleaned while occupying less space, thereby avoiding affecting the dust removal equipment's purification of impurities in the gas. During the actual use of the above-mentioned device, since the dust removal equipment can only purify the dust in the flue gas, the purified flue gas contains carbon dioxide, which will be discharged into the outside air along with the gas, thereby affecting the global climate. Therefore, it is difficult to capture the carbon dioxide in the purified flue gas. Summary of the invention

[0005] The object of the present invention is to provide a cement kiln carbon dioxide capture and flue gas purification integrated device, which has the advantage of capturing carbon dioxide in the purified flue gas and solves the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cement kiln carbon dioxide capture and flue gas purification integrated device, comprising a regeneration tower for separating carbon dioxide in flue gas, one side of the regeneration tower is penetrated and fixedly connected with an exhaust chimney, the end of the exhaust chimney away from the regeneration tower is fixedly connected with a purification chimney, an air inlet chimney is fixedly connected to a symmetrical position on the side of the purification chimney away from the exhaust chimney, and a semicircular air inlet hole for cement flue gas to enter the purification chimney is provided on the side of the purification chimney close to the air inlet chimney, a guide plate for guiding the flue gas to the top side of the purification chimney is fixedly connected to the inner wall of the air inlet chimney close to one end of the purification chimney, an exhaust hole connected to the exhaust chimney is provided at a corresponding position of the purification chimney close to the exhaust chimney, both ends of the inside of the purification chimney are penetrated and fixedly connected with cylindrical rollers, and the cylindrical rollers are provided with a purification mechanism for filtering dust in the flue gas and an auxiliary mechanism for capturing carbon dioxide in the flue gas.

[0007] Preferably, the purification mechanism includes a plurality of evenly arranged movable grooves on the outer contour of a cylindrical roller, the inner wall of each movable groove is telescopically connected to a filter plate for filtering dust in the flue gas, and support grooves connected to the movable grooves are provided on the cylindrical rollers at symmetrical positions at both ends of each filter plate.

[0008] Preferably, each of the filter plates is fixedly connected to a columnar block at a symmetrical position at both ends, and the end of the columnar block away from the filter plate penetrates through the inner wall of the support groove on the adjacent side and is movably connected, and both ends of the inner wall of the purification cylinder are provided with cam grooves for pulling the filter plate to perform telescopic reciprocating movement, and the end of the columnar blocks at both ends away from the filter plate penetrates through the inner wall of the cam groove on the adjacent side and is movably connected.

[0009] Preferably, an annular plate is fixedly sleeved on the outer contour of the cylindrical roller near the two ends of the filter plate, and a cleaning mechanism for cleaning the dust on the surface of the filter plate is provided on the annular plate;

[0010] The cleaning mechanism includes a plurality of evenly placed cleaning rollers which are penetrated and connected to the opposite surfaces of the annular plates at both ends for fixed-axis rotation. Each of the cleaning rollers is respectively in contact with the surface of the filter plate on the adjacent side, and a hard brush is provided on the outer contour of the cleaning roller for cleaning dust on the surface of the filter plate.

[0011] Preferably, both ends of the inner wall of the purification cylinder are fixedly connected to a gear ring that drives the cleaning roller to rotate through an external bracket, and the gear ring is movably sleeved on the outer contour of the cylindrical roller. Both ends of each cleaning roller are coaxially fixed with a gear that meshes with the gear ring for transmission.

[0012] Preferably, a slag discharge pipe for guiding dust discharge is penetrated and fixedly connected to the bottom side of the purification cylinder, and a collection box for collecting dust is penetrated and fixedly connected to the bottom end of the slag discharge pipe.

[0013] Preferably, the auxiliary mechanism includes a storage box for storing adsorbent fixedly connected to the top side of the exhaust chimney, and a U-shaped tube is penetrated and fixedly connected on one side of the exhaust chimney, both ends of the U-shaped tube are fixedly connected with atomizing nozzles for atomizing and spraying the adsorbent into the flue gas, and a rectangular shell for horizontal reciprocating movement is sleeved on the outer contour of the U-shaped tube, and liquid inlet pipes are penetrated and fixedly connected at symmetrical positions near both ends of the rectangular shell, and the ends of the two liquid inlet pipes away from the rectangular shell are penetrated to the inner wall of the storage box and fixedly connected.

[0014] Preferably, a piston plate movably connected to the inner wall of the rectangular shell is fixedly connected to the outer contour of the U-shaped tube, and liquid inlet valves are fixedly connected to the inner walls of the two liquid inlet pipes near one end of the rectangular shell, and drain valves are penetrated and fixedly connected to symmetrical positions on both sides of the U-shaped tube near the piston plate, an L-shaped pull rod is fixedly connected to the side of the rectangular shell away from the exhaust pipe, and the end of the L-shaped pull rod away from the rectangular shell is fixedly connected to a rectangular frame, and a circular plate is coaxially fixedly connected to the end of the cylindrical roller near the atomizing nozzle, and an eccentric block for pulling the rectangular shell for horizontal reciprocating movement is fixedly connected to the circular plate at a position off-center, and the eccentric block penetrates to the inner wall of the rectangular frame and is movably connected.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. A plurality of movable grooves are provided on the cylindrical roller inside the purification cylinder, and a filter plate is connected to the inner wall of each movable groove. The filter plate can realize continuous filtration of dust in the flue gas under the rotation of the cylindrical roller. In addition, the columnar blocks at both ends of the filter plate cooperate with the cam grooves on the inner wall of the purification cylinder to realize the automatic telescopic reciprocating movement of the filter plate. This reciprocating motion not only improves the filtration efficiency, but also helps to prevent dust accumulation and maintain the continuous and efficient operation of the filter plate. Through the coordinated use of this structure, the present invention significantly improves the purification efficiency of the flue gas and reduces the frequency of equipment maintenance caused by dust accumulation.

[0017] Second, through the cleaning roller and hard brush on the annular plate, and the gear ring on the inner wall of the purification cylinder meshing with the gear on the cleaning roller, the cylindrical roller drives the annular plate to rotate on a fixed axis, and the gear can drive the cleaning roller to rotate on a fixed axis under the action of the gear ring, and the filter plate shrinks and moves, so that the dust on the surface of the filter plate can be automatically cleaned, ensuring that the filter plate maintains an efficient working state, thereby improving the reliability and safety of the entire system.

[0018] 3. Through the storage box on the top side of the exhaust chimney and the atomizing nozzle on the U-shaped tube, the circular plate pulls the rectangular shell to move horizontally back and forth on the U-shaped tube, so that the atomizing nozzle can continuously spray the adsorbent inside the exhaust chimney, and the adsorbent can be evenly atomized and sprayed into the flue gas, so that the purified flue gas and the adsorbent are evenly mixed, and the carbon dioxide in the flue gas reacts chemically with the adsorbent and is captured by the adsorbent, further improving the capture effect of carbon dioxide in the flue gas.

[0019] The above structure solves the problem that in the actual use of the existing device, since the dust removal equipment can only purify the dust in the flue gas, the carbon dioxide in the purified flue gas will be discharged into the external air along with the gas, thus affecting the global climate, so it is difficult to capture the carbon dioxide in the purified flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a cross-sectional schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle;

[0023] Figure 4 For the present invention Figure 2 Schematic diagram of the structure at B in the middle;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the annular plate of the present invention;

[0025] Figure 6 It is a schematic cross-sectional view of the three-dimensional structure of the purification cartridge of the present invention;

[0026] Figure 7 It is a cross-sectional schematic diagram of the three-dimensional structure of a rectangular shell of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at C in the middle;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the part where the filter plate of the present invention is located.

[0029] In the figure: 1. regeneration tower; 2. exhaust pipe; 3. purification cylinder; 301. semicircular air inlet hole; 302. exhaust hole; 303. cam groove; 4. air inlet pipe; 5. guide plate; 6. cylindrical roller; 601. movable groove; 602. support groove; 7. filter plate; 8. cylindrical block; 9. annular plate; 10. cleaning roller; 11. gear; 12. gear ring; 13. slag discharge pipe; 14. collection box; 15. storage box; 16. U-shaped pipe; 161. discharge valve; 17. atomizing nozzle; 18. rectangular shell; 19. liquid inlet pipe; 191. liquid inlet valve; 20. piston plate; 21. circular plate; 22. eccentric block; 23. rectangular frame; 24. L-shaped pull rod. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1:

[0032] See also Figures 1 to 9 The present invention provides a technical solution: a cement kiln carbon dioxide capture and flue gas purification integrated device, comprising a regeneration tower 1 for separating carbon dioxide in flue gas, one side of the regeneration tower 1 is penetrated and fixedly connected with an exhaust pipe 2, the end of the exhaust pipe 2 away from the regeneration tower 1 is fixedly connected with a purification cylinder 3, the purification cylinder 3 is fixedly connected with an air intake cylinder 4 at a symmetrical position on the side away from the exhaust pipe 2, and a semicircular air intake hole 301 for cement flue gas to enter the purification cylinder 3 is provided on the side of the purification cylinder 3 close to the air intake cylinder 4, the inner wall of the air intake cylinder 4 close to one end of the purification cylinder 3 is fixedly connected with a guide plate 5 for guiding the flue gas to the top side of the purification cylinder 3, the corresponding position of the purification cylinder 3 close to the exhaust pipe 2 is provided with an exhaust hole 302 connected with the exhaust pipe 2, the two ends of the inside of the purification cylinder 3 are penetrated and fixedly connected with a cylindrical roller 6, and the cylindrical roller 6 is provided with a purification mechanism for filtering dust in the flue gas and an auxiliary mechanism for capturing carbon dioxide in the flue gas.

[0033] When in use, the regeneration tower 1 is arranged and fixedly supported on the ground, so that the regeneration tower 1 can subsequently separate the carbon dioxide in the purified flue gas. The exhaust pipe 2 is arranged on the regeneration tower 1, and the exhaust pipe 2 is fixedly supported on the regeneration tower 1, so that the exhaust pipe 2 is connected with the inner wall of the regeneration tower 1. The purification cylinder 3 is arranged on the exhaust pipe 2, and the air intake cylinder 4 is arranged on the purification cylinder 3, so that the purification cylinder 3 drives the air intake cylinder 4 to be fixedly supported on the exhaust pipe 2, and the air intake cylinder 4 is connected with the cement kiln exhaust pipe, so that the cement kiln exhaust pipe can discharge the flue gas to the air intake cylinder 4, through the semicircular air inlet hole 301 opened on the purification cylinder 3, the semicircular air inlet hole 301 connects the air inlet cylinder 4 with the inner wall of the purification cylinder 3, and the guide plate 5 is arranged on the air inlet cylinder 4, so that the guide plate 5 can guide the inside of the air inlet cylinder 4 to the top side of the purification cylinder 3 for flow, and the exhaust hole 302 opened on the purification cylinder 3, the exhaust hole 302 connects the exhaust cylinder 2 with the inner wall of the purification cylinder 3, and the smoke inside the purification cylinder 3 flows along the arc surface of the top side, so that the smoke on the top side of the purification cylinder 3 can enter the exhaust cylinder 2 through the exhaust hole 302.

[0034] Through the cylindrical roller 6 arranged on the purification cylinder 3, and the cylindrical roller 6 is driven to rotate by a motor, the motor can drive the cylindrical roller 6 to rotate on a fixed axis on the inner wall of the purification cylinder 3, and the purification mechanism and auxiliary mechanism arranged on the cylindrical roller 6 enable the purification mechanism to filter the dust in the top side flue gas multiple times, thereby improving the purification effect of the flue gas. At the same time, the auxiliary mechanism can spray the adsorbent into the exhaust pipe 2, so that the flue gas and the adsorbent are evenly mixed, and the carbon dioxide in the flue gas reacts chemically with the adsorbent and is captured by the adsorbent.

[0035] The exhaust pipe 2 discharges the mixed flue gas into the regeneration tower 1, so that the carbon dioxide in the flue gas inside the regeneration tower 1 is released and separated under the action of heat, and the released carbon dioxide gas flow is compressed after condensation and drying for easy transportation and storage. The above-mentioned regeneration tower 1 is an existing equipment well known to people in this field, so it will not be described here.

[0036] Embodiment 2:

[0037] On the basis of the first embodiment, further:

[0038] The purification mechanism includes a cylindrical roller 6 with a plurality of evenly arranged movable grooves 601 on its outer contour, the inner wall of each movable groove 601 is telescopically connected to a filter plate 7 for filtering dust in the flue gas, and each cylindrical roller 6 at symmetrical positions at both ends of the filter plate 7 is provided with a supporting groove 602 connected to the movable groove 601.

[0039] A columnar block 8 is fixedly connected to the symmetrical positions at both ends of each filter plate 7, and the end of the columnar block 8 away from the filter plate 7 penetrates the inner wall of the support groove 602 on the adjacent side and is movably connected. Cam grooves 303 for pulling the filter plate 7 to perform telescopic reciprocating movement are provided at both ends of the inner wall of the purification cylinder 3, and the ends of the columnar blocks 8 away from the filter plate 7 penetrate to the inner wall of the cam groove 303 on the adjacent side and are movably connected.

[0040] When in use, the movable groove 601 is provided on the cylindrical roller 6, and the filter plate 7 is arranged on the movable groove 601, so that the movable groove 601 provides limited support for the moving direction of the filter plate 7, and the filter plate 7 is connected to the inner wall of the movable groove 601 for telescopic movement, and the support groove 602 provided on the cylindrical roller 6 can make the support groove 602 communicate with the movable groove 601, and the columnar block 8 is provided on the filter plate 7, and the columnar block 8 penetrates to the inner wall of the support groove 602, so that the support groove 602 provides movably support for the columnar block 8, and the cam groove 303 provided on the purification cylinder 3 and the semicircular air inlet hole 301 provide limited support for the columnar block 8, and the cylindrical roller 6 drives the filter plate 7 to rotate along a fixed axis, so that the columnar block 8 pulls the filter plate 7 to telescopically reciprocate along the inner wall of the movable groove 601 under the action of the cam groove 303.

[0041] like Figure 2 , Figure 5 and Figure 6 As shown, as the cylindrical roller 6 rotates in the direction of D, the cylindrical roller 6 can drive the filter plate 7 to rotate relative to the air inlet direction of the semicircular air inlet hole 301, and the filter plate 7 on the bottom side of the cylindrical roller 6 is in a contracted state. As the cylindrical roller 6 drives the filter plate 7 on the bottom side to rotate in the direction of D, the columnar block 8 pulls the filter plate 7 to extend outward under the action of the semicircular air inlet hole 301, and the filter plate 7 fits with the inner wall of the purification cylinder 3, so that the filter plate 7 can filter the dust in the flue gas on the top side of the purification cylinder 3, and five filter plates 7 are provided. As the cylindrical roller 6 drives the filter plate 7 to rotate on a fixed axis, the dust in the flue gas on the top side of the purification cylinder 3 can be filtered multiple times, thereby improving the purification effect of the flue gas.

[0042] As the cylindrical roller 6 drives the filter plate 7 on the top side to rotate in the direction D, the columnar block 8 pulls the filter plate 7 to retract and move toward the inner wall of the movable groove 601 under the action of the cam groove 303, so as to facilitate the subsequent cleaning of the dust filtered on the surface of the filter plate 7.

[0043] Embodiment three:

[0044] On the basis of the second embodiment, further:

[0045] The outer contour of the cylindrical roller 6 near the two ends of the filter plate 7 is fixedly sleeved with an annular plate 9, and the annular plate 9 is provided with a cleaning mechanism for cleaning the dust on the surface of the filter plate 7;

[0046] The cleaning mechanism includes a plurality of evenly placed cleaning rollers 10 that are penetrated and rotatably connected on opposite surfaces of the annular plates 9 at both ends, each of the cleaning rollers 10 is respectively in contact with the surface of the filter plate 7 on the adjacent side, and a hard brush is provided on the outer contour of the cleaning roller 10 for cleaning dust on the surface of the filter plate 7.

[0047] Both ends of the inner wall of the purification cylinder 3 are fixedly connected with a gear ring 12 through an external bracket to drive the cleaning roller 10 to rotate, and the gear ring 12 is movably sleeved on the outer contour of the cylindrical roller 6. Both ends of each cleaning roller 10 are coaxially fixed with a gear 11 that meshes with the gear ring 12 for transmission.

[0048] When in use, the annular plate 9 is arranged on the cylindrical roller 6, and the annular plate 9 is fixedly supported on the cylindrical roller 6, so that the annular plate 9 can be synchronously rotated with the cylindrical roller 6, and the cleaning roller 10 is arranged on the annular plate 9, and the cleaning roller 10 is provided with a hard brush, so that the hard brush on the cleaning roller 10 fits with the surface of the filter plate 7, and the gear ring 12 is arranged on the purification cylinder 3, and the gear ring 12 is fixedly supported on the purification cylinder 3, and the gear 11 is arranged on the cleaning roller 10, and the gear 11 and the gear ring 12 meshes and rotates, and the cylindrical roller 6 drives the annular plate 9 to rotate on a fixed axis, so that the gear 11 can drive the cleaning roller 10 to rotate on a fixed axis under the action of the gear ring 12, and the cylindrical block 8 on the bottom side of the cylindrical roller 6 pulls the filter plate 7 to shrink and move toward the inner wall of the movable groove 601, so that the cleaning roller 10 can clean the dust filtered on the surface of the filter plate 7, and the cleaned dust falls on the bottom side of the purification cylinder 3, further realizing the cleaning of the filter plate 7 and ensuring the filtering effect of the filter plate 7.

[0049] Embodiment 4:

[0050] On the basis of the third embodiment, further:

[0051] The bottom end of the purification cylinder 3 is penetrated and fixedly connected with a slag discharge pipe 13 for guiding dust discharge, and the bottom end of the slag discharge pipe 13 is penetrated and fixedly connected with a collection box 14 for collecting dust.

[0052] When in use, through the slag discharge pipe 13 arranged on the purification cylinder 3 and the collecting box 14 arranged on the slag discharge pipe 13, the slag discharge pipe 13 can fix the collecting box 14 on the bottom side of the purification cylinder 3, and the slag discharge pipe 13 connects the purification cylinder 3 with the inner wall of the collecting box 14, so that the slag discharge pipe 13 can guide the dust swept from the bottom side to be discharged into the collecting box 14 for collection, and the collecting box 14 and the slag discharge pipe 13 are detachably connected, so that personnel can subsequently remove the collecting box 14 from the slag discharge pipe 13 for cleaning.

[0053] Embodiment five:

[0054] On the basis of the fourth embodiment, further:

[0055] The auxiliary mechanism includes a storage box 15 for storing adsorbent fixedly connected to the top side of the exhaust chimney 2, and a U-shaped tube 16 is penetrated and fixedly connected on one side of the exhaust chimney 2, and both ends of the U-shaped tube 16 are fixedly connected to atomizing nozzles 17 for atomizing and spraying the adsorbent into the flue gas, and a rectangular shell 18 for horizontal reciprocating movement is sleeved on the outer contour of the U-shaped tube 16, and liquid inlet pipes 19 are penetrated and fixedly connected at symmetrical positions near both ends of the rectangular shell 18, and the ends of the two liquid inlet pipes 19 away from the rectangular shell 18 are penetrated to the inner wall of the storage box 15 and fixedly connected.

[0056] A piston plate 20 movably connected to the inner wall of the rectangular shell 18 is fixedly connected to the outer contour of the U-shaped tube 16, and the inner walls of the two liquid inlet pipes 19 close to one end of the rectangular shell 18 are fixedly connected to liquid inlet valves 191, and the U-shaped tube 16 is penetrated and fixedly connected to discharge valves 161 at symmetrical positions on both sides close to the piston plate 20, and an L-shaped pull rod 24 is fixedly connected to the side of the rectangular shell 18 away from the exhaust pipe 2, and the end of the L-shaped pull rod 24 away from the rectangular shell 18 is fixedly connected to a rectangular frame 23, and the end of the cylindrical roller 6 close to the atomizing nozzle 17 is coaxially fixedly connected to a circular plate 21, and an eccentric block 22 for pulling the rectangular shell 18 to move horizontally reciprocatingly is fixedly connected to the circular plate 21 at a position off-center, and the eccentric block 22 penetrates to the inner wall of the rectangular frame 23 and is movably connected.

[0057] When in use, through the storage box 15 set on the exhaust pipe 2, the storage box 15 is fixedly supported on the exhaust pipe 2, and the adsorbent is first stored on the inner wall of the storage box 15. Through the U-shaped tube 16 set on the exhaust pipe 2, the two ends of the U-shaped tube 16 are connected with the inner wall of the exhaust pipe 2, and through the rectangular shell 18 set on the U-shaped tube 16, the rectangular shell 18 can be horizontally moved and connected on the U-shaped tube 16. Through the liquid inlet pipe 19 set on the rectangular shell 18, the liquid inlet pipe 19 can connect the storage box 15 with the inner wall of the rectangular shell 18. Through the piston plate 20 set on the U-shaped tube 16, the piston plate 20 is fixedly supported on the U-shaped tube 16, and at the same time, the U-shaped tube 16 is attached to the inner wall of the rectangular shell 18 and movably connected.

[0058] Through the L-shaped pull rod 24 set on the rectangular shell 18 and the 025 set on the L-shaped pull rod 24, the L-shaped pull rod 24 can fix the rectangular frame 23 on the rectangular shell 18. Through the circular plate 21 set on the cylindrical roller 6, and the circular plate 21 is coaxially fixed to the cylindrical roller 6, the cylindrical roller 6 can drive the circular plate 21 to rotate synchronously on a fixed axis. Through the eccentric block 22 set on the circular plate 21, and the eccentric block 22 is movably supported on the inner wall of the rectangular frame 23, the circular plate 21 rotates on a fixed axis, so that the rectangular frame 23 can pull the rectangular shell 18 to move horizontally back and forth on the U-shaped tube 16 through the L-shaped pull rod 24 under the action of the eccentric block 22.

[0059] like Figure 1 ,picture, Figure 7 and Figure 8As shown, through the liquid inlet valve 191 provided on the liquid inlet pipe 19 and the liquid discharge valve 161 provided on the U-shaped tube 16, when the rectangular shell 18 moves horizontally toward the direction close to the purification tube 3, the air pressure on the inner wall of the rectangular shell 18 away from the purification tube 3 is in a positive pressure state, and the liquid inlet valve 191 away from the end of the purification tube 3 is in a closed state, and the liquid discharge valve 161 is in an open state, so that the internal adsorbent of the end of the rectangular shell 18 away from the purification tube 3 can be discharged to the interior of the exhaust tube 2 through the two ends of the U-shaped tube 16, and the atomizing nozzle 17 provided on the U-shaped tube 16 can spray the adsorbent on the inner wall of the exhaust tube 2 in atomized form, so that The purified flue gas is evenly mixed with the adsorbent, and the carbon dioxide in the flue gas reacts chemically with the adsorbent and is captured by the adsorbent. At the same time, the internal air pressure of 108 near one end of the purification cylinder 3 is in a negative pressure state, and the liquid inlet valve 191 near one end of the purification cylinder 3 is in an open state, and the liquid discharge valve 161 is in a closed state, so that the liquid inlet pipe 19 can draw the adsorbent inside the storage box 15 to the interior of the rectangular shell 18 near one end of the purification cylinder 3. When the rectangular shell 18 is horizontally reset and moved in a direction away from the purification cylinder 3, it is opposite to the movement direction of the above-mentioned structure, thereby realizing continuous spraying of the adsorbent inside the exhaust pipe 2, and further improving the capture effect of carbon dioxide in the flue gas.

[0060] It is further realized that the existing device can capture carbon dioxide in the purified flue gas during actual use, is easy to use, and is better than traditional products.

[0061] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cement kiln carbon dioxide capture and flue gas purification integrated device, characterized in that: The invention comprises a regeneration tower (1) for separating carbon dioxide from flue gas, wherein one side of the regeneration tower (1) is penetrated and fixedly connected with an exhaust pipe (2), the end of the exhaust pipe (2) away from the regeneration tower (1) is fixedly connected with a purification pipe (3), the purification pipe (3) is fixedly connected with an air intake pipe (4) at a symmetrical position on the side away from the exhaust pipe (2), and a semicircular air intake hole (301) for allowing cement flue gas to enter the purification pipe (3) is opened on the side of the purification pipe (3) close to the air intake pipe (4), The inner wall of the air inlet cylinder (4) close to one end of the purification cylinder (3) is fixedly connected to a guide plate (5) for guiding the smoke to the top side of the purification cylinder (3); the corresponding position of the purification cylinder (3) close to one side of the exhaust cylinder (2) is provided with an exhaust hole (302) connected to the exhaust cylinder (2); the two ends of the interior of the purification cylinder (3) are penetrated and connected to a cylindrical roller (6) for fixed axis rotation; the cylindrical roller (6) is provided with a purification mechanism for filtering dust in the smoke and an auxiliary mechanism for capturing carbon dioxide in the smoke.

2. The integrated device for carbon dioxide capture and flue gas purification in a cement kiln according to claim 1, characterized in that: The purification mechanism comprises a cylindrical roller (6) having a plurality of evenly arranged movable grooves (601) formed on its outer contour, the inner wall of each movable groove (601) being telescopically connected to a filter plate (7) for filtering dust in the flue gas, and supporting grooves (602) connected to the movable grooves (601) being formed on the cylindrical rollers (6) at symmetrical positions at both ends of each filter plate (7).

3. The integrated device for carbon dioxide capture and flue gas purification in a cement kiln according to claim 2, characterized in that: A columnar block (8) is fixedly connected at a symmetrical position at both ends of each filter plate (7), and the end of the columnar block (8) away from the filter plate (7) penetrates the inner wall of the support groove (602) on the adjacent side and is movably connected. Cam grooves (303) for pulling the filter plate (7) to perform telescopic reciprocating movement are provided at both ends of the inner wall of the purification cylinder (3), and the ends of the columnar blocks (8) away from the filter plate (7) penetrate the inner wall of the cam groove (303) on the adjacent side and are movably connected.

4. The integrated device for carbon dioxide capture and flue gas purification in a cement kiln according to claim 3, characterized in that: An annular plate (9) is fixedly sleeved on the outer contour of the cylindrical roller (6) at both ends of the filter plate (7) and the annular plate (9) is provided with a cleaning mechanism for cleaning dust on the surface of the filter plate (7); The cleaning mechanism comprises a plurality of uniformly placed cleaning rollers (10) which are penetrated and rotatably connected on opposite surfaces of the annular plates (9) at both ends, each of the cleaning rollers (10) being respectively fitted with the surface of the filter plate (7) on an adjacent side, and a hard brush for cleaning dust on the surface of the filter plate (7) is provided on the outer contour of the cleaning roller (10).

5. The integrated device for carbon dioxide capture and flue gas purification in a cement kiln according to claim 4, characterized in that: Both ends of the inner wall of the purification cylinder (3) are fixedly connected to a toothed ring (12) through an external bracket for driving the cleaning roller (10) to rotate, and the toothed ring (12) is movably sleeved on the outer contour of the cylindrical roller (6), and both ends of each cleaning roller (10) are coaxially fixedly connected to a gear (11) for meshing transmission with the toothed ring (12).

6. The integrated device for carbon dioxide capture and flue gas purification in a cement kiln according to claim 5, characterized in that: The bottom side of the purification cylinder (3) is penetrated and fixedly connected with a slag discharge pipe (13) for guiding dust discharge, and the bottom end of the slag discharge pipe (13) is penetrated and fixedly connected with a collection box (14) for collecting dust.

7. The integrated device for carbon dioxide capture and flue gas purification in a cement kiln according to claim 6, characterized in that: The auxiliary mechanism comprises a storage box (15) for storing adsorbent fixedly connected to the top side of the exhaust pipe (2), and a U-shaped tube (16) is penetrated and fixedly connected to one side of the exhaust pipe (2), and both ends of the U-shaped tube (16) are fixedly connected to atomizing nozzles (17) for atomizing and spraying the adsorbent into the flue gas, and a rectangular shell (18) for horizontal reciprocating movement is sleeved on the outer contour of the U-shaped tube (16), and liquid inlet pipes (19) are penetrated and fixedly connected at symmetrical positions near both ends of the rectangular shell (18), and the ends of the two liquid inlet pipes (19) away from the rectangular shell (18) are penetrated to the inner wall of the storage box (15) and fixedly connected.

8. The integrated device for carbon dioxide capture and flue gas purification in a cement kiln according to claim 7, characterized in that: A piston plate (20) movably connected to the inner wall of the rectangular shell (18) is fixedly connected to the outer contour of the U-shaped tube (16); the inner walls of the two liquid inlet pipes (19) close to one end of the rectangular shell (18) are fixedly connected to liquid inlet valves (191); liquid discharge valves (161) are penetrated and fixedly connected at symmetrical positions on both sides of the U-shaped tube (16) close to the piston plate (20); and the side of the rectangular shell (18) away from the exhaust pipe (2) is fixedly connected to the inner wall of the two liquid inlet pipes (19) and the inner wall of the two liquid inlet pipes (19 ... An L-shaped pull rod (24) is provided, and one end of the L-shaped pull rod (24) away from the rectangular shell (18) is fixedly connected to a rectangular frame (23); one end of the cylindrical roller (6) close to the atomizing nozzle (17) is coaxially fixedly connected to a circular plate (21); an eccentric block (22) is fixedly connected to the circular plate (21) at a position offset from the center, and the eccentric block (22) is connected to the inner wall of the rectangular frame (23) and is movably connected.

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