A sintering flue gas treatment device and a treatment method thereof

Abstract

The application discloses a sintering flue gas treatment device and a treatment method thereof and belongs to the technical field of flue gas treatment. The device comprises a tower body, a waste liquid tank is arranged at the bottom of the tower body, and a plurality of pretreatment adsorption units are arranged around the position corresponding to the waste liquid tank at the bottom of the inner cavity of the tower body. In the application, the water sprayed by the spraying assembly can enter the corresponding pretreatment adsorption unit under the guidance and control of the connecting assembly, the sintering flue gas sent from the bottom can be guided into the corresponding pretreatment adsorption unit through the air inlet guide assembly, the rising sintering flue gas can be contacted with the sprayed water for spraying purification, the activated carbon on the sidewall of the pretreatment adsorption unit can simultaneously perform the pre-adsorption of the flue gas, the air after spraying and adsorption can pass through the gathering of the smoke hood upwards, be conveyed to the tower top through the pipeline and be treated by the subsequent purification process, the pre-spraying and adsorption of the sintering air can reduce the content of large particles in the flue gas, and the difficulty of the subsequent process purification treatment is reduced.

Description

Technical Field

[0001] This invention belongs to the field of flue gas treatment technology, and particularly relates to a sintering flue gas treatment device and its treatment method. Background Technology

[0002] In the steel smelting process, the flue gas emitted during sintering is the largest type of industrial waste gas with the most concentrated and diverse pollutants. The main pollutants in sintering flue gas include particulate matter, SO2, and NOx. Treatment technologies are mainly divided into source emission reduction, process control, and end-of-pipe treatment. When treating sintering flue gas, desulfurization and denitrification treatment are generally required.

[0003] Chinese invention patent CN117258508A discloses a sintering flue gas denitrification treatment device, including an adsorption chamber; the adsorption chamber is slidably connected to a first isolation door and a second isolation door; the adsorption chamber has a cavity; a plurality of isolation plates are fixedly connected to the cavity of the adsorption chamber; the isolation plates are arranged in parallel at equal intervals; one end of each isolation plate has a first opening; a sealing door is slidably connected to each isolation plate; online dust monitors are fixedly connected to the bottom of the adsorption chamber and the isolation plates; adsorption components are inserted and connected to the isolation plates and the top of the adsorption chamber.

[0004] The above solution purifies sintering flue gas in stages using adsorption components. A sealing door separates the adsorption components in the adsorption chamber, and a corresponding carbon replacement door is provided. Each adsorption component can be replaced individually after reaching its maximum adsorption capacity, avoiding waste of activated carbon due to overall replacement. However, in actual use, the contact range between activated carbon and flue gas is constant, causing the activated carbon in the flue gas concentration area to tend to reach its maximum adsorption capacity first. Frequent replacement can easily lead to a decrease in the sealing performance of the adsorption chamber and the sealing door, and affect the continuous treatment efficiency of sintering flue gas, indicating room for improvement. Summary of the Invention

[0005] The purpose of this invention is to address the problem that activated carbon in concentrated flue gas areas often reaches its maximum adsorption capacity first, and frequent replacement can lead to a decrease in the sealing performance of the adsorption chamber and the sealing door, thus affecting the continuous treatment efficiency of sintering flue gas. Therefore, this invention proposes a sintering flue gas treatment device and its treatment method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sintering flue gas treatment device includes a tower body with a waste liquid tank at the bottom. Multiple pretreatment adsorption units are arranged around the bottom of the tower body corresponding to the waste liquid tank, and a rotating frame is connected between the multiple pretreatment adsorption units. A bearing ring is rotatably connected to the outside of the rotating frame and connected to the bottom side of the tower body cavity. A spray assembly is provided on the top side of the tower body cavity corresponding to the top of the pretreatment adsorption unit. The spray assembly is located at the top of the pretreatment adsorption unit, and a communication component is installed at the bottom of the spray assembly. The communication component controls the flow of the spray medium from the spray assembly to the pretreatment adsorption unit, thereby controlling the corresponding pretreatment adsorption unit to participate in flue gas treatment.

[0008] As a further description of the above technical solution:

[0009] The bottom side of the inner cavity of the tower is provided with an air intake guide assembly, which includes an air intake plate. A flow chamber is installed on the top of the air intake plate. Multiple baffles are arranged around the flow chamber along the axis. A pressure cap is connected to the top of the flow chamber, and an air outlet is opened on the top of the pressure cap, which is opposite to the air inlet of the corresponding pretreatment adsorption unit.

[0010] As a further description of the above technical solution:

[0011] The bottom of the air intake plate is surrounded by multiple air intake holes, which extend into the flow chamber through the air chamber.

[0012] As a further description of the above technical solution:

[0013] The connecting assembly includes multiple electric push rods arranged in a mixed manner along the tower body axis, and a support ring is connected between the multiple electric push rods. A fixing ring is sleeved on the outside of the support ring. The fixing ring is connected to one side of the inner cavity of the tower body through a bracket. The support ring and the fixing ring are connected by a plate. A push block is connected to the end of the extended part of the electric push rod. A second wedge is attached to one side of the push block. A moving plate is connected to one side of the second wedge. The moving plate passes through the inner side of the support ring and has a groove and is connected to an air inlet seat. The air inlet seat has a through opening. Multiple fixing blocks are arranged around the axis along the inner side of the opening on one side of the air inlet seat. A squeezing rod is connected to the top of the fixing blocks. The squeezing rod squeezes the spray assembly to form a medium flow channel. A corrugated pipe is connected to the bottom of the opening on the other side of the air inlet seat. The other end of the corrugated pipe is elastically attached to the outside of the air inlet at the top of the pretreatment adsorption unit.

[0014] As a further description of the above technical solution:

[0015] An extrusion block is connected to the outer side of the extension part of the electric push rod. A first wedge is connected to the top of the pretreatment adsorption unit at the position corresponding to the extrusion block. The pretreatment adsorption unit is driven downward to connect with the air intake guide assembly through the cooperation of the extrusion block and the first wedge.

[0016] As a further description of the above technical solution:

[0017] The top of the pressure cap is provided with a conical air guide ring, and when the pretreatment adsorption unit moves downward, the bottom air inlet can be connected to the top of the conical air guide ring.

[0018] As a further description of the above technical solution:

[0019] The spray assembly includes a spray medium chamber connected to the tower body and located at the top of the pretreatment adsorption unit. Multiple liquid outlet holes are arranged around the bottom of the spray medium chamber along the axis. A sealing sleeve is installed inside the liquid outlet hole. Medium tubes are provided on both sides of the sealing sleeve. Multiple sealing sleeves form a medium chamber in the spray medium chamber. The bottom of the sealing sleeve has an opening. A conical plug is slidably connected in the opening. A moving plate is connected to the top of the conical plug. The moving plate is slidably connected in the sealing sleeve. Multiple insertion holes are arranged around the bottom outer side of the sealing sleeve.

[0020] As a further description of the above technical solution:

[0021] The top of the moving plate is connected to a closing spring, and the other end of the closing spring is connected to the top of the inner cavity of the closing sleeve. Multiple guide spiral plates are arranged around the top of the moving plate along the axis. The cross-sectional shape of the guide spiral plates is L-shaped, and the medium is guided out spirally through the guide spiral plates.

[0022] As a further description of the above technical solution:

[0023] The pretreatment adsorption unit has a flue gas outlet on its side wall, and a flue gas pipe is installed between multiple pretreatment adsorption units. The flue gas pipe has an opening on the outside that communicates with the flue gas outlet. The flue gas pipe is connected to the inside of the rotating frame. A smoke collection hood is connected to the inner cavity of the tower. The top of the smoke collection hood extends to the top of the tower through a pipe. The top of the flue gas pipe extends into the smoke collection hood. Sealing gaskets are installed on both sides of the pretreatment adsorption unit.

[0024] As a further description of the above technical solution:

[0025] A method for treating sintering flue gas includes the following steps:

[0026] S1. Flue gas zoning introduction: Sintering flue gas is introduced into the bottom of the tower and guided to be evenly distributed to multiple pretreatment adsorption units by baffles.

[0027] S2. Selective unit activation controls the spray channel. The electric push rod drives the squeezing rod to insert into the closed sleeve of the spray assembly, opening the cone plug to form the spray liquid channel and establish a sealed connection. Simultaneously, the pretreatment adsorption unit is driven to move down, so that its bottom air inlet is sealed and connected with the conical air guide ring of the air inlet guide assembly.

[0028] S3. Synergistic purification treatment: The spray liquid forms a swirling flow through the spiral guide plate and is sprayed downward into the activated pretreatment adsorption unit. The rising flue gas comes into countercurrent contact with the swirling spray liquid to remove large particles. The flue gas is then adsorbed and purified through the activated carbon layer on the side wall of the pretreatment adsorption unit.

[0029] S4. Purified gas collection: The treated gas enters the exhaust pipe through the flue gas outlet and is collected and transported to the top of the tower for subsequent processes by the smoke collection hood.

[0030] S5. Unit maintenance control: shut down the electric push rod of the target unit, release the spray channel and bottom seal, and rotate the frame to replace the failed unit.

[0031] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0032] 1. In this invention, during the treatment of sintering flue gas, the sprayed water can be sent into the spray assembly through an external pumping device. The water sprayed out by the spray assembly can enter the corresponding pretreatment adsorption unit under the guidance and control of the connecting assembly. At this time, the sintering flue gas sent from the bottom can be guided to the corresponding pretreatment adsorption unit through the air inlet guiding assembly. The rising sintering flue gas can come into contact with the sprayed water for spray purification. The activated carbon on the side wall of the pretreatment adsorption unit can also pre-adsorb the flue gas. The air after spray adsorption can rise and be collected by the fume hood and then sent to the top of the tower for subsequent purification processes through the pipeline. By pre-spraying and adsorbing the sintering air, the content of large particulate matter in the flue gas can be reduced, reducing the difficulty of subsequent purification processes.

[0033] 2. In this invention, through the designed connecting component, when the second wedge is pressed, it can be forced to move the moving plate upward. The upward movement of the moving plate can drive the air inlet seat to move. The extrusion rod at the top of the air inlet seat can enter the insertion hole at the bottom of the closed sleeve after the movement. The extrusion rod can squeeze the moving plate at the corresponding position. When the moving plate is pressed, it can be forced upward to drive the cone plug to open the gap at the bottom of the closed sleeve. The liquid sent from the spray medium chamber can enter the bottom pretreatment adsorption unit through the opened gap. The independent openable and closable closed sleeve realizes the independent connection and control of the pretreatment adsorption unit, which facilitates replacement and maintenance and improves the treatment effect of the pretreatment adsorption unit of the modular device.

[0034] 3. In this invention, the designed closed spring can use its own elasticity to close the conical plug after the extrusion rod is disengaged, thus preventing the gap from opening and affecting the spraying pressure of the spray liquid. This allows for the pressure replacement of the pretreatment adsorption unit, improving maintenance efficiency. When the spray liquid overflows from the open gap, multiple guide thread plates can cause the water to be spirally drawn out, improving the spray uniformity and ensuring full contact with the flue gas in the pretreatment adsorption unit. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of a sintering flue gas treatment device proposed in this invention.

[0036] Figure 2 This is a schematic diagram showing the disassembled structure of a sintering flue gas treatment device proposed in this invention;

[0037] Figure 3 This is a schematic diagram of the pretreatment adsorption unit assembly structure of a sintering flue gas treatment device proposed in this invention.

[0038] Figure 4 This is a partially disassembled structural diagram of a sintering flue gas treatment device proposed in this invention.

[0039] Figure 5 The present invention proposes Figure 4 Enlarged structural diagram of section A;

[0040] Figure 6 This is a schematic diagram of the rotating frame assembly structure of a sintering flue gas treatment device proposed in this invention.

[0041] Figure 7 This is a schematic diagram of the connecting component structure of a sintering flue gas treatment device proposed in this invention;

[0042] Figure 8 This is a schematic diagram showing the disassembled structure of the air inlet guiding component of a sintering flue gas treatment device proposed in this invention.

[0043] Figure 9 This is a partially disassembled structural diagram from a bottom view of a sintering flue gas treatment device proposed in this invention.

[0044] Figure 10 This is a bottom-view, disassembled structural diagram of the spray assembly of a sintering flue gas treatment device proposed in this invention;

[0045] Figure 11 This is a schematic diagram of the disassembled structure of the spray assembly of a sintering flue gas treatment device proposed in this invention.

[0046] Legend:

[0047] 1. Tower body; 2. Sealing pad; 3. Waste liquid tank; 4. Air inlet guide assembly; 401. Air inlet plate; 402. Flow chamber; 403. Baffle plate; 404. Pressure cap; 5. Pretreatment adsorption unit; 6. Connecting assembly; 601. Electric push rod; 602. Push block; 603. Extrusion block; 604. First wedge block; 605. Second wedge block; 606. Moving plate; 607. Air inlet seat; 608. Fixed block; 609. Extrusion rod; 7. Spray assembly; 701. Spray medium chamber; 702. Sealing sleeve; 703. Insertion hole; 704. Moving plate; 705. Conical plug; 706. Medium pipe; 707. Guide spiral plate; 708. Sealing spring; 8. Smoke hood; 9. Rotating frame; 10. Bearing ring; 11. Fixing ring; 12. Support ring. Detailed Implementation

[0048] 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.

[0049] Please see Figures 1-11 This invention provides a technical solution: a sintering flue gas treatment device, including a tower body 1, a waste liquid tank 3 at the bottom of the tower body 1, and multiple sets of pretreatment adsorption units 5 arranged around the bottom of the inner cavity of the tower body 1 corresponding to the position of the waste liquid tank 3, and a rotating frame 9 is installed between the multiple sets of pretreatment adsorption units 5. A bearing ring 10 is rotatably connected to the outside of the rotating frame 9 and connected to the bottom side of the inner cavity of the tower body 1. A spray assembly 7 is provided on the top side of the inner cavity of the tower body 1 corresponding to the top of the pretreatment adsorption unit 5. The spray assembly 7 is located at the top of the pretreatment adsorption unit 5. A communication assembly 6 is installed at the bottom of the spray assembly 7. The spray medium of the spray assembly 7 is controlled to enter the pretreatment adsorption unit 5 through the communication assembly 6, thereby controlling the corresponding pretreatment adsorption unit 5 to participate in flue gas treatment.

[0050] Specifically: During sintering flue gas treatment, the sprayed water can be sent into the spray assembly 7 through an external pumping device. The water sprayed from the spray assembly 7 can enter the corresponding pretreatment adsorption unit 5 under the guidance and control of the connecting assembly 6. At this time, the sintering flue gas sent from the bottom can be guided to the corresponding pretreatment adsorption unit 5 through the air inlet guiding assembly 4. The rising sintering flue gas can come into contact with the sprayed water for spray purification. The activated carbon on the side wall of the pretreatment adsorption unit 5 can also pre-adsorb the flue gas. The air after spray adsorption can rise and be collected by the fume hood 8 and then sent to the top of the tower for subsequent purification processes through the pipeline. By pre-spraying and adsorbing the sintering air, the content of large particulate matter in the flue gas can be reduced, reducing the difficulty of subsequent purification processes.

[0051] Please see Figure 8 The bottom of the inner cavity of the tower body 1 is provided with an air intake guide assembly 4. The air intake guide assembly 4 includes an air intake plate 401. A flow chamber 402 is installed on the top of the air intake plate 401. Multiple baffles 403 are arranged around the axis inside the flow chamber 402. A pressure cap 404 is connected to the top of the flow chamber 402. The pressure cap 404 has an air outlet on its top that is opposite to the air inlet of the corresponding pretreatment adsorption unit 5.

[0052] The bottom of the air intake plate 401 is surrounded by multiple air intake holes, which extend into the flow chamber 402 through the air chamber. By setting multiple air intake holes, the flue gas can be fully extended into the air intake holes and then converged in the flow chamber 402 before entering the corresponding pretreatment adsorption unit 5.

[0053] The pretreatment adsorption unit 5 includes an outer shell and an internal mixing baffle channel to ensure full contact between the spray liquid and the flue gas, and allows heavier particles to flow through the bottom air inlet to the bottom waste liquid tank 3 for further purification of the waste liquid.

[0054] Specifically: Through the designed air intake guiding component 4, when the sintering flue gas is pumped into the bottom of the tower body 1 through the pipeline, the rising sintering flue gas can enter the flow chamber 402 through the air intake plate 401. Multiple baffles 403 in the flow chamber 402 can deflect and guide the flue gas, allowing the air to enter the pretreatment adsorption unit 5 through the air outlet at the top of the pressure cap 404. Thus, through the designed air intake guiding component 4, the air can be fully and evenly distributed in multiple pretreatment adsorption units 5. Furthermore, through the control of the top connecting component 6, the contact between the unconnected pretreatment adsorption units 5 and the sintering flue gas can be reduced, improving the zoned optimization control effect.

[0055] Please see Figure 4 and Figure 5The connecting component 6 includes multiple electric push rods 601 arranged in a mixed manner along the axis of the tower body 1, and a support ring 12 is connected between the multiple electric push rods 601. A fixing ring 11 is sleeved on the outside of the support ring 12. The fixing ring 11 is connected to one side of the inner cavity of the tower body 1 by a bracket. The support ring 12 and the fixing ring 11 are connected by a plate. A push block 602 is connected to the end of the extended part of the electric push rod 601. A second wedge 605 is attached to one side of the push block 602. A movable [device] is connected to one side of the second wedge 605. The movable plate 606 passes through the inner side of the support ring 12 and is connected to the air inlet seat 607. The air inlet seat 607 has a through opening. Multiple fixing blocks 608 are arranged around the axis on the inner side of the opening on one side of the air inlet seat 607. The top of the fixing block 608 is connected to the extrusion rod 609. The extrusion rod 609 extrudes the spray assembly 7 to form a medium flow channel. The bottom of the opening on the other side of the air inlet seat 607 is connected to a corrugated pipe. The other end of the corrugated pipe is elastically attached to the outer side of the top air inlet of the pretreatment adsorption unit 5.

[0056] Through the design of the corrugated pipe, the corrugated pipe can use its own elasticity to keep the bottom end fully attached to the pretreatment adsorption unit 5, so that the flow cavity 402 after height adjustment can flow normally into the pretreatment adsorption unit 5 at the corresponding position, and the elastic corrugated pipe can prevent the flue gas from overflowing.

[0057] An extrusion block 603 is connected to the outer side of the extended part of the electric push rod 601. A first wedge block 604 is connected to the top of the pretreatment adsorption unit 5 at the position corresponding to the extrusion block 603. The pretreatment adsorption unit 5 is driven downward to connect with the air intake guide assembly 4 through the cooperation of the extrusion block 603 and the first wedge block 604.

[0058] The top of the pressure cap 404 is provided with a conical air guide ring, and when the pretreatment adsorption unit 5 moves downward, the bottom air inlet can be connected to the top of the conical air guide ring.

[0059] The spray assembly 7 includes a spray medium chamber 701, which is connected to the tower body 1 and located at the top of the pretreatment adsorption unit 5. The bottom of the spray medium chamber 701 is provided with multiple liquid outlet holes along the axis. A sealing sleeve 702 is installed in the liquid outlet hole. Medium pipes 706 are provided on both sides of the sealing sleeve 702. Multiple sealing sleeves 702 form a medium chamber in the spray medium chamber 701. The bottom of the sealing sleeve 702 has an opening, and a conical plug 705 is slidably connected in the opening. A moving plate 704 is connected to the top of the conical plug 705. The moving plate 704 is slidably connected in the sealing sleeve 702. Multiple insertion holes 703 are provided around the bottom outer side of the sealing sleeve 702.

[0060] Specifically: Through the designed connecting component 6, the electric push rod 601 extends and drives the extension part to move. The extension part can push the front push block 602 and the bottom pressing block 603 to press the second wedge block 605 and the first wedge block 604 at the corresponding positions. When the second wedge block 605 is pressed, it can drive the moving plate 606 to move upward. The upward movement of the moving plate 606 can drive the air intake seat 607 to move. The pressing rod 609 at the top of the air intake seat 607 can enter the bottom insertion hole 703 of the sealing sleeve 702 after the movement. The pressing rod 609 can press the corresponding position. The moving plate 704, when pressed, can be forced upward to drive the cone plug 705 to open the gap at the bottom of the sealing sleeve 702. At this time, the liquid sent from the spray medium chamber 701 can enter the bottom pretreatment adsorption unit 5 through the open gap. This is beneficial to achieve independent connection control of the pretreatment adsorption unit 5 through the independently openable and closable sealing sleeve 702, which is convenient for replacement and maintenance. At the same time, it can control the connection between the pretreatment adsorption unit 5 and the spray assembly 7 as needed, which is convenient for establishing the circulation of the spray system and improving the treatment effect of the pretreatment adsorption unit 5 of the modular device.

[0061] The top of the moving plate 704 is connected to a closing spring 708, and the other end of the closing spring 708 is connected to the top of the inner cavity of the closing sleeve 702. Multiple guide spiral plates 707 are arranged around the top of the moving plate 704 along the axis. The cross-sectional shape of the guide spiral plate is L-shaped, and the medium is guided out spirally through the guide spiral plate.

[0062] Specifically: Through the designed sealing spring 708, the sealing spring 708 can use its own elastic force to close the sealing sleeve 702 with the cone plug 705 after the extrusion rod 609 is disengaged. This can prevent the opening of the gap from affecting the spraying pressure of the spray liquid, and can complete the pressure replacement of the pretreatment adsorption unit 5, improving maintenance efficiency. Furthermore, when the spray liquid overflows from the open gap, multiple guide thread plates can make the water spiral out, which is beneficial to improve the spraying uniformity and ensure full contact with the flue gas in the pretreatment adsorption unit 5.

[0063] Please see Figure 4 The pretreatment adsorption unit 5 has a flue gas outlet on its side wall, and a flue gas pipe is provided between multiple pretreatment adsorption units 5. The flue gas pipe has an opening on the outside that communicates with the flue gas outlet. The flue gas pipe is connected to the inside of the rotating frame 9. The inner cavity of the tower body 1 is connected to a smoke collection hood 8. The top of the smoke collection hood 8 extends to the top of the tower body 1 through a pipe, and the top of the flue gas pipe extends into the smoke collection hood 8.

[0064] Through the designed flue gas outlet, the pre-purified flue gas treated in the pretreatment adsorption unit 5 can enter the exhaust pipe through the side flue gas treatment. The gas entering the exhaust pipe can rise through the smoke collection hood 8 and enter the other side section of the top of the tower body 1.

[0065] Furthermore, a partition is connected between adjacent pretreatment adsorption units 5, and the partition is connected to the rotating frame 9 to block heat exchange between adjacent pretreatment adsorption units 5.

[0066] The purification process at the top of tower body 1 can be either packing purification or spray purification. This part is a well-known technology in the field and will not be elaborated further.

[0067] The pretreatment adsorption unit 5 is equipped with sealing pads 2 on both sides. The sealing pads 2 seal the gap between the pretreatment adsorption unit 5 and the rotating frame 9, which helps to improve the flue gas guiding effect.

[0068] Furthermore, the cover plate installed on the outside of the tower body 1 is located on one side of the pretreatment adsorption unit 5 at the corresponding position. The pretreatment adsorption unit 5 can be disassembled by opening the cover plate, which facilitates the independent disassembly of the pretreatment adsorption unit 5 while keeping the top spray assembly 7 closed after disassembly, thereby improving the replacement treatment effect.

[0069] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sintering flue gas treatment device, comprising a tower body (1), wherein the bottom of the tower body (1) has a waste liquid tank (3), characterized in that, Multiple pretreatment adsorption units (5) are arranged around the bottom of the inner cavity of the tower body (1) corresponding to the position of the waste liquid tank (3), and a rotating frame (9) is installed between the multiple pretreatment adsorption units (5). A bearing ring (10) is rotatably connected to the outside of the rotating frame (9). The bearing ring (10) is connected to the bottom side of the inner cavity of the tower body (1). A spray assembly (7) is provided on the top side of the inner cavity of the tower body (1) corresponding to the top of the pretreatment adsorption unit (5). The spray assembly (7) is located at the top of the pretreatment adsorption unit (5). A communication assembly (6) is installed at the bottom of the spray assembly (7). The spray medium of the spray assembly (7) is controlled to enter the pretreatment adsorption unit (5) through the communication assembly (6), and the corresponding pretreatment adsorption unit (5) is controlled to participate in the flue gas treatment. The connecting component (6) includes multiple electric push rods (601) arranged in a mixed manner along the axis of the tower body (1), and a support ring (12) is connected between the multiple electric push rods (601). A fixing ring (11) is sleeved on the outside of the support ring (12). The fixing ring (11) is connected to one side of the inner cavity of the tower body (1) through a bracket. The support ring (12) and the fixing ring (11) are connected through a plate. A push block (602) is connected to the end of the extended part of the electric push rod (601). A second wedge (605) is attached to one side of the push block (602). A second wedge (605) is connected to one side of the second wedge (605). A movable plate (606) is provided with a groove through the inner side of the support ring (12) and connected to an air inlet seat (607). The air inlet seat (607) has a through opening. Multiple fixed blocks (608) are arranged around the inner side of the opening on one side of the air inlet seat (607) along the axis. A squeezing rod (609) is connected to the top of the fixed block (608). The squeezing rod (609) squeezes the spray assembly (7) to form a medium flow channel. A corrugated pipe is connected to the bottom of the opening on the other side of the air inlet seat (607). The other end of the corrugated pipe is elastically attached to the outside of the top air inlet of the pretreatment adsorption unit (5). An extrusion block (603) is connected to the outer side of the extension of the electric push rod (601). A first wedge (604) is connected to the top of the pretreatment adsorption unit (5) at the position corresponding to the extrusion block (603). The pretreatment adsorption unit (5) is driven downward to connect with the air intake guide assembly (4) through the cooperation of the extrusion block (603) and the first wedge (604). The spray assembly (7) includes a spray medium chamber (701), which is connected to the tower body (1) and is located at the top of the pretreatment adsorption unit (5). The bottom of the spray medium chamber (701) is provided with multiple liquid outlet holes along the axis. A sealing sleeve (702) is installed in the liquid outlet hole. Medium pipes (706) are provided on both sides of the sealing sleeve (702). Multiple sealing sleeves (702) form a medium chamber in the spray medium chamber (701). The bottom of the sealing sleeve (702) has an opening. A cone plug (705) is slidably connected in the opening. A moving plate (704) is connected to the top of the cone plug (705). The moving plate (704) is slidably connected in the sealing sleeve (702). Multiple insertion holes (703) are provided around the bottom outer side of the sealing sleeve (702). The top of the moving plate (704) is connected to a closing spring (708), and the other end of the closing spring (708) is connected to the top of the inner cavity of the closing sleeve (702). Multiple guide spiral plates (707) are arranged around the top of the moving plate (704) along the axis. The cross-sectional shape of the guide spiral plate (707) is L-shaped, and the medium is guided out spirally through the guide spiral plate (707).

2. The sintering flue gas treatment device according to claim 1, characterized in that, The bottom of the inner cavity of the tower body (1) is provided with an air intake guide assembly (4). The air intake guide assembly (4) includes an air intake plate (401). A flow chamber (402) is installed on the top of the air intake plate (401). Multiple baffles (403) are arranged around the flow chamber (402) along the axis. A pressure cap (404) is connected to the top of the flow chamber (402), and an air outlet is opened on the top of the pressure cap (404) that is opposite to the air inlet of the corresponding pretreatment adsorption unit (5).

3. The sintering flue gas treatment device according to claim 2, characterized in that, The bottom of the air intake plate (401) is surrounded by multiple air intake holes, which extend into the flow chamber (402) through the air chamber.

4. The sintering flue gas treatment device according to claim 2, characterized in that, The top of the pressure cap (404) is provided with a conical air guide ring. When the pretreatment adsorption unit (5) moves downward, the bottom air inlet can be connected to the top of the conical air guide ring.

5. The sintering flue gas treatment device according to claim 1, characterized in that, The pretreatment adsorption unit (5) has a flue gas outlet on its side wall, and a flue gas pipe is provided between multiple pretreatment adsorption units (5). The flue gas pipe has an opening on the outside that communicates with the flue gas outlet. The flue gas pipe is connected to the inside of the rotating frame (9). The inner cavity of the tower body (1) is connected to a smoke collection hood (8). The top of the smoke collection hood (8) extends to the top of the tower body (1) through a pipe. The top of the flue gas pipe extends into the smoke collection hood (8). Sealing pads (2) are installed on both sides of the pretreatment adsorption unit (5).

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