A flue gas purification device based on a moving bed

Abstract

This invention relates to the field of flue gas desulfurization and dust removal, and discloses a flue gas purification device based on a moving bed. The device comprises: a waste incinerator, an adsorption filter, a desulfurization moving bed, and a desulfurization material recovery device. The dust outlet of the waste incinerator is connected to the adsorption filter via a first connecting pipe. The end of the adsorption filter away from the first connecting pipe is fixedly connected to one end of the desulfurization moving bed via a second connecting pipe. The other end of the desulfurization moving bed is fixedly connected to a third connecting pipe, and the end of the third connecting pipe away from the desulfurization moving bed is fixedly connected to an SCR denitrification module. A desulfurization material recovery device is fixedly installed on the side wall of the desulfurization moving bed, and a second reactant recovery tank is fixedly installed below the desulfurization material recovery device. This invention solves the problems of poor desulfurization and dust removal effect, cumbersome desulfurization and dust removal steps, inability to recycle desulfurizing agents, and energy waste in the prior art.

Description

Technical Field

[0001] This invention relates to the field of flue gas desulfurization and dust removal, and in particular to a flue gas purification device based on a moving bed. Background Technology

[0002] With increasing environmental awareness and stricter environmental regulations, the treatment of domestic and industrial waste is receiving more and more attention. Generally, high-temperature incineration of domestic and industrial waste can convert a large amount of harmful substances into harmless substances for emission. However, the high-temperature incineration of chlorine-containing wastes such as household garbage, waste plastics, chemical waste, and medical waste produces high concentrations of acidic gases, which not only cause significant environmental damage but also lead to substantial corrosion of production equipment, affecting safe production. Therefore, deacidification treatment of the dust after combustion is a crucial measure for environmental protection. Currently, existing deacidification technologies mainly involve multi-step deacidification, removing HCl and SO2 sequentially. Because it is a multi-step process, the steps are very complicated, and the deacidification effect is very poor. The effects of dust removal and deacidification are both unsatisfactory, and the deacidifying agents used for deacidification are also difficult to recycle. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention aims to provide a flue gas purification device based on a moving bed, so as to solve the problems of poor acid removal and dust removal effect, cumbersome acid removal and dust removal steps, inability to recycle and reuse acid removal agent, and waste of energy in the existing technology.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A flue gas purification device based on a moving bed, characterized in that it includes: a waste incinerator, an adsorption filter, a deacidification moving bed, and a deacidification material recovery device; The fly ash outlet of the waste incinerator is connected to the adsorption and filtration device for adsorbing and filtering impurities from dust via a first connecting pipe. The end of the adsorption and filtration device away from the first connecting pipe is fixedly connected to one end of the deacidification moving bed for adsorbing and deacidifying dust via a second connecting pipe. The other end of the deacidification moving bed is fixedly connected to a third connecting pipe. The end of the third connecting pipe away from the deacidification moving bed is sequentially fixedly connected to a ceramic foam dust collector, an SCR denitrification module, and a chimney. A deacidification material recovery device for recycling deacidified material is fixedly installed on the side wall of the deacidification moving bed. Below the deacidification material recovery device is a second reactant recovery tank for recovering reactants adsorbed on the deacidification material reactants.

[0005] Preferably, the adsorption filtration device includes: a filter chamber wall, a first adsorption filter cylinder, a second adsorption filter cylinder, and an annular connecting baffle; one end of the first adsorption filter cylinder, loaded with activated carbon, is fixedly connected to the inner side of the filter chamber wall, and the other end is fixedly connected to the outer ring of the annular connecting baffle; the second adsorption filter cylinder, also loaded with activated carbon, is fitted inside the first adsorption filter cylinder, one end of the second adsorption filter cylinder is fixedly connected to the inner ring of the annular connecting baffle, and the other end of the second adsorption filter cylinder is fixedly connected to a conical diverter for dust diversion; the first adsorption filter cylinder and the second adsorption filter cylinder have an "arch"-shaped structure; a fly ash discharge pipe for discharging fly ash is fixedly connected to the bottom side wall of the adsorption filtration device near the first connecting pipe, and the end of the fly ash discharge pipe away from the adsorption filtration device is connected to a second reactant recovery tank for receiving fly ash.

[0006] Preferably, the deacidification moving bed includes: a moving bed wall, connecting pulleys, and a moving bed inner tube; the two ends of the moving bed wall are rotatably connected to the second connecting pipe and the third connecting pipe respectively via the connecting pulleys, wherein one end of the connecting pulley is driven by a drive structure, the drive structure provides rotational power to the connecting pulley, thereby driving the moving bed wall to rotate; the moving bed inner tube, which is in the shape of a zigzag line, is fixedly connected inside the moving bed wall, and the two ends of the moving bed inner tube are respectively connected to the second connecting pipe and the third connecting pipe, and a plurality of deacidification materials for adsorbing acidic substances are placed in the moving bed inner tube.

[0007] Preferably, the drive structure includes a drive motor and a drive shaft; the power output shaft of the drive motor is meshed with the drive shaft, and the drive shaft provides rotational power to the moving bed wall.

[0008] Preferably, the inner wall of the moving bed inner tube near the second connecting pipe and the third connecting pipe is fixedly connected with an arc-shaped rigid guide baffle that guides the dust and prevents the deacidified material from sliding out of the moving bed inner tube when the moving bed wall rotates.

[0009] Preferably, an inner tube valve is fixedly provided at the contact point between the inner tube of the moving bed and the inner wall of the moving bed, which can be freely opened and closed to add / pour deacidification material.

[0010] Preferably, the deacidification material recovery device includes: a recovery pipe inlet, a first recovery pipe, a second recovery pipe, a third recovery pipe, and a deacidification material recovery port; the recovery pipe inlet is fixedly located at the lower end of the inner pipe valve, the lower end of the recovery pipe inlet is fixedly connected to the first recovery pipe, and the end of the first recovery pipe away from the recovery pipe inlet is fixedly connected to an inclined second recovery pipe; the end of the second recovery pipe away from the first recovery pipe is fixedly connected to the third recovery pipe, the lower side wall of the second recovery pipe is fixedly connected to a first filter screen with elastic function for filtering reactants, and the lower end of the first filter screen is fixedly provided with a second reactant recovery tank for receiving reactants; the end of the third recovery pipe away from the second recovery pipe is fixedly connected to a fourth recovery pipe, the third recovery pipe is a conveyor belt pipe structure, the fourth recovery pipe is an inclined slide structure, the end of the fourth recovery pipe away from the third recovery pipe is fixedly connected to the deacidification material recovery port, and the deacidification material recovery port is fixedly located at the upper end of the recovery pipe inlet on the opposite side to the recovery pipe inlet at the upper end of the inner pipe valve.

[0011] Preferably, the first recovery pipe is fixed with an elastic guide plate that bounces up and down to shake off the reactants attached to the deacidified material.

[0012] Preferably, an air guide duct is fixedly provided on the first recycling pipe at the lower end of the elastic guide plate, and a dry ice spray gun that provides airflow is fixedly connected to the end of the air guide duct away from the first recycling pipe; an exhaust structure for discharging air is fixedly connected to the first recycling pipe corresponding to the airflow direction inside the air guide duct.

[0013] Preferably, the exhaust structure includes: a second filter screen, an exhaust duct, and a first reactant recovery tank; the second filter screen is an activated carbon adsorption filter screen, the second filter screen is fixedly installed in the air duct on the first recovery duct corresponding to the airflow direction, one end of the second filter screen located outside the first recovery duct is fixedly connected to the exhaust duct for exhaust, and the first reactant recovery tank for reactant recovery is fixedly installed near the lower end of the exhaust duct.

[0014] The beneficial effects of this invention are as follows: This invention uses an "arch"-shaped adsorption filter cartridge to filter dust, preventing dust blockage during filtration. The use of a transverse filter screen provides better filtration than traditional single-layer filters, and slows down dust flow during filtration, thus achieving a cooling effect. The moving bed deacidification structure allows the deacidification material to roll within the inner tube, resulting in a more uniform reaction between the material and dust, leading to better deacidification. This ensures that SOx levels in the flue gas before entering the SCR denitrification module are ≤2 mg / Nm3, significantly extending the SCR catalyst life and improving denitrification efficiency. In the deacidification recovery device, an elastic guide plate lifts the deacidification material with adhering reactants, and vibration removes the reactants from the surface. A dry ice spray gun further removes the reactants before the material is recovered, achieving recycling and significantly reducing energy consumption. This results in faster deacidification, lower energy consumption, and better deacidification performance. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a front half-sectional view of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 2 This is a front half-sectional view of the adsorption filtration device of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 3 This is a front half-sectional view of the deacidification moving bed of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 4 This is a front half-sectional view of a deacidification material recovery device of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 5 This is an enlarged structural diagram of point A provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the first recovery pipe, the second recovery pipe, the third recovery pipe and the fourth recovery pipe of the deacidification material recovery device provided in the embodiment of the present invention.

[0017] In the diagram: 1-Waste incinerator, 2-Adsorption filtration device, 201-Filter chamber wall, 202-First adsorption filter cartridge, 203-Second adsorption filter cartridge, 204-Diverter, 205-Annular connecting baffle, 3-Deacidification moving bed, 301-Moving bed wall, 302-Connecting pulley, 303-Moving bed inner tube, 304-Inner tube valve, 305-Guide baffle, 4-Drive structure, 401-Drive motor, 402-Drive shaft, 5-Deacidification material recovery device, 501-Recovery pipe opening, 502-First recovery pipe, 503-Elastic guide plate, 50 4-Second recovery pipe, 505-First filter screen, 506-Third recovery pipe, 507-Deacidified material recovery port, 508-Fourth recovery pipe, 6-Blower structure, 601-Dry ice spray gun, 602-Air guide pipe, 7-Exhaust structure, 701-Second filter screen, 702-Exhaust pipe, 703-First reactant recovery tank, 8-Second reactant recovery tank, 9-First connecting pipe, 10-Second connecting pipe, 11-Third connecting pipe, 12-SCR denitrification module, 13-Ceramic foam dust removal device, 14-Chimney, 15-Fly ash discharge pipe. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] Currently, existing deacidification technologies mainly involve multi-step deacidification, removing HCl and SO2 sequentially. Because it is a multi-step process, the steps are very complicated, and the deacidification effect is very poor. The effects of dust removal and deacidification are both unsatisfactory, and the deacidifying agents used for deacidification are also difficult to recycle.

[0022] In view of the shortcomings of the existing technology, the present invention aims to provide a flue gas purification device based on a moving bed, so as to solve the problems of poor acid removal and dust removal effect, cumbersome acid removal and dust removal steps, inability to recycle and reuse acid removal agent, and waste of energy in the existing technology. Example

[0023] Please see Figures 1-3 , Figure 1 This is a front half-sectional view of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 2 This is a front half-sectional view of the adsorption filtration device of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 3 This is a front half-sectional view of the deacidification moving bed of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; the flue gas purification device based on a moving bed is characterized in that it includes: a waste incinerator 1, an adsorption filter 2, a deacidification moving bed 3, and a deacidification material recovery device 5. The fly ash discharge port of the waste incinerator 1 is connected to an adsorption and filtration device 2 for adsorbing and filtering impurities from dust via a first connecting pipe 9. The adsorption and filtration device 2 includes: a filter chamber wall 201, a first adsorption filter cylinder 202, a second adsorption filter cylinder 203, and an annular connecting baffle 205. One end of the first adsorption filter cylinder 202, which is loaded with activated carbon, is fixedly connected to the inner side of the filter chamber wall 201, and the other end is fixedly connected to the outer ring of the annular connecting baffle 205. Similarly, the second adsorption filter cylinder 203, which is also loaded with activated carbon, is fitted inside the first adsorption filter cylinder 202. One end of the second adsorption filter cylinder 203 is fixedly connected to the inner ring of the annular connecting baffle 205, and the other end of the second adsorption filter cylinder 203 is fixedly connected to a conical diverter 204 for dust diversion. The first adsorption filter cartridge 202 and the second adsorption filter cartridge 203 have an "arch"-shaped structure. A fly ash discharge pipe 15 for discharging fly ash is fixedly connected to the bottom side wall of the adsorption filter device 2 near the first connecting pipe 9. The end of the fly ash discharge pipe 15 away from the adsorption filter device 2 is connected to a second reactant recovery tank 8 for receiving fly ash. The end of the adsorption filter device 2 away from the first connecting pipe 9 is fixedly connected to one end of a deacidification moving bed 3 for adsorbing and deacidifying dust via a second connecting pipe 10. The deacidification moving bed 3 includes: a moving bed wall 301, connecting pulleys 302, and a moving bed inner tube 303. Both ends of the moving bed wall 301 are rotatably connected to the second connecting pipe 10 and the third connecting pipe 11 respectively via connecting pulleys 302. The pulley 302 is connected to a drive structure 4, which provides rotational power to the pulley 302, thereby driving the moving bed wall 301 to rotate. The drive structure 4 includes a drive motor 401 and a drive shaft 402. The power output shaft of the drive motor 401 is meshed with the drive shaft 402, which provides rotational power to the moving bed wall 301. A zigzag-shaped moving bed inner tube 303 is fixedly connected inside the moving bed wall 301. The two ends of the moving bed inner tube 303 are respectively connected to the second connecting pipe 10 and the third connecting pipe 11. A number of deacidifying materials for adsorbing acidic substances are placed in the moving bed inner tube 303. Dust guiding powder is fixedly connected to the inner wall of the moving bed inner tube 303 near the second connecting pipe 10 and the third connecting pipe 11. A rigid, arc-shaped baffle 305 is provided to prevent the deacidified material from sliding out of the inner tube 303 of the moving bed when the moving bed wall 301 rotates. A third connecting pipe 11 is fixedly connected to the other end of the deacidified moving bed 3. A ceramic foam dust removal device 13, an SCR denitrification module 12, and a chimney 14 are sequentially fixedly connected to the end of the third connecting pipe 11 away from the deacidified moving bed 3. An inner tube valve 304 is fixedly provided at the contact point between the inner tube 303 of the moving bed and the inner wall of the moving bed wall 301, which can be freely opened and closed to add / pour the deacidified material. A deacidified material recovery device 5 for recycling the deacidified material is fixedly provided on the side wall of the deacidified moving bed 3. A second reactant recovery tank 8 for recovering the reactants adsorbed on the deacidified material reactants is fixedly provided below the deacidified material recovery device 5. Example

[0024] Please see Figures 1-6 , Figure 1 This is a front half-sectional view of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 2 This is a front half-sectional view of the adsorption filtration device of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 3 This is a front half-sectional view of the deacidification moving bed of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 4 This is a front half-sectional view of a deacidification material recovery device of a flue gas purification device based on a moving bed provided in an embodiment of the present invention; Figure 5 This is an enlarged structural diagram of point A provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the first recovery pipe, the second recovery pipe, the third recovery pipe, and the fourth recovery pipe of the deacidification material recovery device provided in the embodiment of the present invention; a flue gas purification device based on a moving bed, characterized in that it includes: a waste incinerator 1, an adsorption filtration device 2, a deacidification moving bed 3, and a deacidification material recovery device 5. The fly ash discharge port of the waste incinerator 1 is connected to an adsorption and filtration device 2 for adsorbing and filtering impurities from dust via a first connecting pipe 9. The adsorption and filtration device 2 includes: a filter chamber wall 201, a first adsorption filter cylinder 202, a second adsorption filter cylinder 203, and an annular connecting baffle 205. One end of the first adsorption filter cylinder 202, which is loaded with activated carbon, is fixedly connected to the inner side of the filter chamber wall 201, and the other end is fixedly connected to the outer ring of the annular connecting baffle 205. Similarly, the second adsorption filter cylinder 203, which is also loaded with activated carbon, is fitted inside the first adsorption filter cylinder 202. One end of the second adsorption filter cylinder 203 is fixedly connected to the inner ring of the annular connecting baffle 205, and the other end is fixedly connected to... The device is equipped with a conical dust diversion component 204. The first adsorption filter cartridge 202 and the second adsorption filter cartridge 203 have an "arch"-shaped structure. A fly ash discharge pipe 15 for discharging fly ash is fixedly connected to the bottom side wall of the adsorption filter device 2 near the first connecting pipe 9. The end of the fly ash discharge pipe 15 away from the adsorption filter device 2 is connected to a second reactant recovery tank 8 for receiving fly ash. The end of the adsorption filter device 2 away from the first connecting pipe 9 is fixedly connected to one end of a deacidification moving bed 3 for adsorbing and deacidifying dust through a second connecting pipe 10. The deacidification moving bed 3 includes: a moving bed wall 301, connecting pulleys 302, and a moving bed inner tube 303. The two ends of the moving bed wall 301 are connected by connecting pulleys. 302 is rotatably connected to the second connecting pipe 10 and the third connecting pipe 11 respectively. One end of the connecting pulley 302 is connected to a drive structure 4, which provides rotational power to the connecting pulley 302, thereby driving the moving bed wall 301 to rotate. The drive structure 4 includes a drive motor 401 and a drive shaft 402. The power output shaft of the drive motor 401 is meshed with the drive shaft 402, providing rotational power to the moving bed wall 301 through the drive shaft 402. A zigzag-shaped moving bed inner tube 303 is fixedly connected inside the moving bed wall 301. Both ends of the moving bed inner tube 303 are connected to the second connecting pipe 10 and the third connecting pipe 11 respectively. Several... The moving bed 303 is used to adsorb acidic substances and remove acidic material. An arc-shaped rigid guide baffle 305 is fixedly connected to the inner wall of the moving bed inner tube 303 near the second connecting pipe 10 and the third connecting pipe 11 to guide dust and prevent the deacidified material from sliding out of the moving bed inner tube 303 when the moving bed wall 301 rotates. The other end of the deacidification moving bed 3 is fixedly connected to the third connecting pipe 11, and the end of the third connecting pipe 11 away from the deacidification moving bed 3 is sequentially fixedly connected to a ceramic foam dust removal device 13, an SCR denitrification module 12, and a chimney 14. An inner tube valve 304, which can be freely opened and closed to add / pour the deacidified material, is fixedly opened at the contact point between the moving bed inner tube 303 and the inner wall of the moving bed wall 301.The deacidification moving bed 3 is fixedly equipped with a deacidification material recovery device 5 for recycling deacidification material on its side wall. The deacidification material recovery device 5 includes: a recovery pipe port 501, a first recovery pipe 502, a second recovery pipe 504, a third recovery pipe 506, and a deacidification material recovery port 507. The recovery pipe port 501 is fixedly located at the lower end of the inner pipe valve 304. The lower end of the recovery pipe port 501 is fixedly connected to the first recovery pipe 502. The first recovery pipe 502 is fixedly equipped with an elastic guide plate 503 that bounces the deacidification material and shakes off the reactants attached to the deacidification material. The first recovery pipe is located at the lower end of the elastic guide plate 503. A duct 602 is fixedly provided on the first recovery pipe 502. A dry ice spray gun 601, which provides airflow, is fixedly connected to the end of the duct 602 away from the first recovery pipe 502. An exhaust structure 7 for discharging air is fixedly connected to the first recovery pipe 502 in the direction of airflow within the duct 602. The exhaust structure 7 includes a second filter 701, an exhaust pipe 702, and a first reactant recovery tank 703. The second filter 701 is an activated carbon adsorption filter. The second filter 701 is fixedly installed on the first recovery pipe 502 in the direction of airflow within the duct 602. The end of the second filter 701 located outside the first recovery pipe 502 is fixedly connected to... An exhaust duct 702 is provided for ventilation. A first reactant recovery tank 703 for reactant recovery is fixedly installed near the lower end of the second filter screen 701. An inclined second recovery duct 504 is fixedly connected to the end of the first recovery duct 502 away from the recovery duct opening 501. A third recovery duct 506 is fixedly connected to the end of the second recovery duct 504 away from the first recovery duct 502. A first filter screen 505 with elasticity for filtering reactants is fixedly connected to the lower side wall of the second recovery duct 504. A second reactant recovery tank 706 for receiving reactants is fixedly installed at the lower end of the first filter screen 505. The third recovery duct... A fourth recovery pipe 508 is fixedly connected to the end of the third recovery pipe 506 away from the second recovery pipe 504. The third recovery pipe 506 is a conveyor belt pipe structure, and the fourth recovery pipe 508 is an inclined slide structure. A deacidification material recovery port 507 is fixedly connected to the end of the fourth recovery pipe 508 away from the third recovery pipe 506. The deacidification material recovery port 507 is fixedly located on the upper end of the recovery pipe port 501 on the opposite side from the upper end of the inner pipe valve 304. A second reactant recovery tank 8 is fixedly provided below the deacidification material recovery device 5 to recover the reactants adsorbed on the deacidification material reactants.

[0025] The specific implementation method is as follows: Dust is discharged from the waste incinerator 1 into the adsorption filter device 2 through the first connecting pipe 9. The dust is diverted by the diverter 204, filtered through the first adsorption filter cylinder 202 and the second adsorption filter cylinder 203, and then discharged into the deacidification moving bed 3 through the second connecting pipe 10. The deacidified material is added into the moving bed inner tube 303 of the deacidification moving bed 3 through the inner tube valve 304. The deacidification moving bed 3 transmits rotational power to the drive shaft 402 through the drive motor 401, thereby driving the connecting pulley 302 to rotate and driving the moving bed wall 3. 01. The deacidification material rotates, moving up and down within the moving bed inner tube 303, allowing the dust to fully contact and react with the deacidification material in the moving bed inner tube 303 to carry out the deacidification process. After reacting with the acidic substances in the dust, a large amount of reactants adhere to the surface of the deacidification material. After the deacidification process, the dust is discharged from the third connecting pipe 11 to the ceramic foam dust collector for dust removal, and then enters the SCR denitrification module. The SOx content in the flue gas entering the SCR denitrification module is ≤2mg / Nm3, which can greatly extend the SCR catalyst life and improve the denitrification effect. Finally, the flue gas exits from the chimney. The deacidified material with reactants attached is discharged from the inner pipe valve 304 and falls into the recovery pipe port 501 of the deacidified material recovery device 5. It bounces repeatedly on the elastic guide plate 503 of the first recovery pipe 502, using vibration to remove the reactants attached to the material. Then, at the air duct 602, the air blown by the dry ice spray gun 601 performs a secondary removal of the reactants. The air passes through the second filter screen 701 and is discharged from the exhaust pipe 702. A portion of the reactants carried away by the air falls into the first reactant recovery tank 703 after passing through the second filter screen 701. The reactants fall from the first recovery pipe 502 into the first filter screen 505 on the lower side wall of the second recovery pipe 504 due to gravity, and finally fall into the second reactant recovery tank 8 below. The deacidified material passes through the second recovery pipe 504, the third recovery pipe 506 and the fourth recovery pipe 508, and finally flows from the deacidified material recovery port 507 into the moving bed inner pipe 303 through the inner pipe valve 304, realizing the recycling of the deacidified material. After the deacidified material has reacted, deacidified material is added again through the recovery pipe port 501 to complete the dust filtration and deacidification process.

[0026] The beneficial effects of this invention are as follows: This invention uses an "arch"-shaped adsorption filter cartridge to filter dust, preventing dust blockage during filtration. The use of a transverse filter screen provides better filtration than traditional single-layer filters, and slows down the dust flow rate, thus achieving a cooling effect. The moving bed deacidification structure allows the deacidified material to roll within the inner tube, resulting in a more uniform reaction between the material and dust and a better deacidification effect. In the deacidification recovery device, an elastic guide plate lifts the deacidified material with adhering reactants, and vibration removes the reactants from the surface. A dry ice spray gun further removes the reactants before the material is recovered, achieving recycling and significantly reducing energy consumption. This results in faster deacidification, lower energy consumption, and a better deacidification effect.

[0027] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the scope of the present invention, and these should also be considered within the protection scope of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A flue gas purification device based on a moving bed, characterized in that, include: Waste incinerator (1), adsorption filtration device (2), deacidification moving bed (3), deacidification material recovery device (5); The fly ash outlet of the waste incinerator (1) is connected to the adsorption and filtration device (2) for adsorbing and filtering impurities of dust through the first connecting pipe (9). The adsorption and filtration device (2) is fixedly connected to one end of the deacidification moving bed (3) for adsorbing and deacidifying dust through the second connecting pipe (10) at the end away from the first connecting pipe (9). The other end of the deacidification moving bed (3) is fixedly connected to the third connecting pipe (11). The end of the third connecting pipe (11) away from the deacidification moving bed (3) is sequentially fixedly connected to the ceramic foam dust removal device (13), the SCR denitrification module (12), and the chimney (14). The deacidification moving bed (3) is fixedly provided with a deacidification material recovery device (5) for recycling deacidification material on the side wall. A second reactant recovery tank (8) for recovering reactants adsorbed on the deacidification material reactants is fixedly provided below the deacidification material recovery device (5). The deacidification moving bed (3) includes: a moving bed wall (301), connecting pulleys (302), and a moving bed inner tube (303); The two ends of the movable bed wall (301) are rotatably connected to the second connecting pipe (10) and the third connecting pipe (11) respectively via the connecting pulleys (302). One end of the connecting pulley (302) is connected to a drive structure (4), which provides rotational power to the connecting pulley (302) and drives the movable bed wall (301) to rotate. The movable bed wall (301) is fixedly connected to a movable bed inner tube (303) in the shape of a zigzag line. The two ends of the movable bed inner tube (303) are respectively connected to the second connecting pipe (10) and the third connecting pipe (11). A number of deacidifying materials for adsorbing acidic substances are placed in the movable bed inner tube (303). The drive structure (4) includes: a drive motor (401) and a drive shaft (402); The power output shaft of the drive motor (401) is meshed with the drive shaft (402), and the drive shaft (402) provides rotational power to the moving bed wall (301); The inner wall of the moving bed inner tube (303) near the second connecting pipe (10) and the third connecting pipe (11) is fixedly connected with an arc-shaped hard guide baffle (305) that guides dust and prevents the deacidified material from sliding out of the moving bed inner tube (303) when the moving bed wall (301) rotates. The inner tube (303) of the moving bed is fixedly provided with an inner tube valve (304) that can be freely opened and closed to add / pour deacidified material at the contact point between the inner tube (303) and the inner wall of the moving bed wall (301); The deacidified material recovery device (5) includes: a recovery pipe port (501), a first recovery pipe (502), a second recovery pipe (504), a third recovery pipe (506), and a deacidified material recovery port (507); The recycling pipe opening (501) is fixedly installed at the lower end of the inner pipe valve (304). A first recycling pipe (502) is fixedly connected to the lower end of the recycling pipe opening (501). An inclined second recycling pipe (504) is fixedly connected to the end of the first recycling pipe (502) away from the recycling pipe opening (501). The second recovery pipe (504) is fixedly connected to the third recovery pipe (506) at the end away from the first recovery pipe (502). The lower side wall of the second recovery pipe (504) is fixedly connected to a first filter screen (505) with elastic function to filter the reactants. The lower end of the first filter screen (505) is fixedly provided with a second reactant recovery tank (8) for receiving reactants. The third recovery pipe (506) is fixedly connected to a fourth recovery pipe (508) at the end away from the second recovery pipe (504). The third recovery pipe (506) is a conveyor belt pipe structure, and the fourth recovery pipe (508) is an inclined slide structure. The fourth recovery pipe (508) is fixedly connected to a deacidified material recovery port (507) at the end away from the third recovery pipe (506). The deacidified material recovery port (507) is fixedly located on the upper end of the recovery pipe port (501) on the opposite side of the recovery pipe port (501) at the upper end of the inner pipe valve (304). The first recovery pipe (502) is fixed with an elastic guide plate (503) that bounces up and shakes off the reactants attached to the deacidified material.

2. The flue gas purification device based on a moving bed according to claim 1, characterized in that: The adsorption filtration device (2) includes: a filter chamber wall (201), a first adsorption filter cylinder (202), a second adsorption filter cylinder (203), and an annular connecting baffle (205); One end of the first adsorption filter cartridge (202) loaded with activated carbon is fixedly connected to the inner side of the filter chamber wall (201), and the other end is fixedly connected to the outer ring of the annular connecting baffle (205); similarly, the second adsorption filter cartridge (203) loaded with activated carbon is sleeved inside the first adsorption filter cartridge (202), one end of the second adsorption filter cartridge (203) is fixedly connected to the inner ring of the annular connecting baffle (205), and the other end of the second adsorption filter cartridge (203) is fixedly connected to a conical diverter (204) for dust diversion. The first adsorption filter cartridge (202) and the second adsorption filter cartridge (203) have an "arch" shaped structure. The adsorption filter device (2) is fixedly connected to the bottom side wall near the first connecting pipe (9) with a fly ash discharge pipe (15) for discharging fly ash. The fly ash discharge pipe (15) is connected to the second reactant recovery tank (8) for receiving fly ash at the end away from the adsorption filter device (2).

3. The flue gas purification device based on a moving bed according to claim 1, characterized in that: An air guide pipe (602) is fixedly provided on the first recycling pipe (502) at the lower end of the elastic guide plate (503), and a dry ice spray gun (601) that provides air power is fixedly connected to the end of the air guide pipe (602) away from the first recycling pipe (502). An exhaust structure (7) for exhaust air is fixedly connected to the first recovery pipe (502) corresponding to the wind direction inside the air guide pipe (602).

4. The flue gas purification device based on a moving bed according to claim 3, characterized in that: The exhaust structure (7) includes: a second filter (701), an exhaust duct (702), and a first reactant recovery tank (703); The second filter screen (701) is an activated carbon adsorption filter screen. The second filter screen (701) is fixedly installed in the air guide pipe (602) on the first recovery pipe (502) corresponding to the wind direction. The second filter screen (701) is located outside the first recovery pipe (502) and is fixedly connected to the exhaust pipe (702) for exhaust. The exhaust pipe (702) is fixedly provided with the first reactant recovery tank (703) for reactant recovery near the lower end of the second filter screen (701).

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