A flue gas dust removal and desulfurization reaction device

Abstract

The present application provides a flue gas dust removal and desulfurization reaction device, which belongs to the field of flue gas treatment technology, and comprises a desulfurization tower, a packing bed arranged in the middle of the desulfurization tower, and a spray pipe for spraying an alkaline solution above the packing bed; an exhaust port for flue gas circulation is provided at the top of the interior of the desulfurization tower, a rotating rod capable of penetrating the packing bed is rotatably connected to the top of the interior of the desulfurization tower, a rubber rod is arranged on the rotating rod, and a plurality of protrusions capable of abutting the rubber rod are arranged at the bottom of the packing bed; a lifting drive member is provided at the top of the interior of the desulfurization tower, and a sealing plate capable of sealing the exhaust port is vertically slidably connected to the execution end of the lifting drive member; a linkage member is provided between the lifting drive member and the rotating rod; the present application can reduce the probability that the filler gaps are not uniformly penetrated by the alkaline solution, so that the flue gas and the alkaline solution can fully react.

Description

Technical Field

[0001] The present application relates to the technical field of flue gas treatment, and in particular to a flue gas dust removal and desulfurization reaction device. Background Art

[0002] Flue gas dust removal and desulfurization is an important step in the treatment of waste gas in industrial production processes, aiming to reduce environmental pollution. Flue gas desulfurization technologies mainly include wet desulfurization and dry desulfurization. Wet desulfurization technology is currently the most widely used desulfurization method. It achieves desulfurization by spraying alkaline solution into the flue gas, so that sulfur dioxide in the flue gas reacts with the alkaline solution to form sulfate.

[0003] In the current wet desulfurization tower, when the wet desulfurization work is carried out, the flue gas is often in a state of natural upward flow in the desulfurization tower, while the alkaline solution is in a state of downward spraying. In order to improve the dust removal and desulfurization effect of the flue gas, a packing bed is usually installed inside the desulfurization tower. The flue gas can not only contact with the spraying alkaline solution in the desulfurization tower during the rising process, but the flue gas and the alkaline solution can also be further contacted with the packing bed as a medium. The packing inside the packing bed is used to disperse the flue gas, so that the flue gas and the alkaline solution are evenly filled in the gaps of the packing. On the one hand, it can promote the contact and reaction of the alkaline solution with the flue gas, and on the other hand, it can also filter the dust mixed in the flue gas.

[0004] Referring to the Chinese patent application document with publication number CN116492797A and publication date July 28, 2023, entitled "An environmentally friendly and efficient industrial flue gas desulfurization and dust removal device", a compartment design is adopted to divide the flue gas channel into multiple areas and increase the flow length of the flue gas, thereby extending the residence time of the flue gas so that the flue gas has sufficient time to contact the desulfurizer and desulfurize.

[0005] Referring to the above technical scheme, when the flue gas and the alkaline solution contact in the packed bed, due to the uncertainty of the distribution position of the packing in the packed bed, there is a possibility that the alkaline solution fails to penetrate into the packing gaps evenly. If the flue gas passes directly through the packing gaps that have not been penetrated by the alkaline solution, the contact effect between the flue gas and the alkaline solution in the packed bed is poor, thereby affecting the reaction effect between the flue gas and the alkaline solution. In addition, due to the randomness of the flue gas rising path, the flue gas may even be discharged from the desulfurization tower without coming into contact with the alkaline solution in the spraying state during the rising process. Summary of the invention

[0006] In view of this, the present application provides a flue gas dust removal and desulfurization reaction device, which is mainly used to solve the problem that flue gas and alkaline solution are difficult to fully contact and react in the desulfurization tower.

[0007] In order to solve the above-mentioned technical problems, the present application provides a flue gas dust removal and desulfurization reaction device, including a desulfurization tower, a packing bed arranged in the middle of the desulfurization tower and a spray pipe for spraying an alkaline solution above the packing bed; an exhaust port for flue gas circulation is opened at the top of the desulfurization tower, and a rotating rod capable of penetrating the packing bed is rotatably connected to the top of the desulfurization tower, a rubber rod is arranged on the rotating rod, and a plurality of protrusions capable of abutting the rubber rod are arranged at the bottom of the packing bed; a lifting drive member is arranged at the top of the desulfurization tower, and the execution end of the lifting drive member is vertically slidably connected to a sealing plate capable of blocking the exhaust port; a linkage member is arranged between the lifting drive member and the rotating rod, which is used to rotate the rotating rod when the lifting drive member drives the transition plate to rise and fall.

[0008] By adopting the above technical solution, the vibration generated by the collision between the rubber rod and the convex block is used to displace the fillers in the filler bed, so that the alkaline solution is evenly distributed on the outer surface of the fillers as the fillers are displaced.

[0009] Optionally, the linkage member includes a screw rod fixedly connected to the execution end of the lifting drive member, and the central axes of the screw rod and the rotating rod coincide with each other. The top of the rotating rod is provided with a screw hole matching the screw rod and an avoidance cavity for inserting the screw rod.

[0010] By adopting the above technical solution, when the lifting drive member is in operation, the screw rod will be vertically displaced, and at this time, the spiral hole will cause the rotating rod to rotate due to the pressure exerted by the screw rod.

[0011] Optionally, the inner top wall of the packing bed is provided with bristles.

[0012] By adopting the above technical solution, when the filler inside the packing bed is vibrated and displaced, the dust attached to the outer surface of the filler will be scraped by the bristles and cleaned.

[0013] Optionally, a plurality of the packing beds are provided, and a plurality of spray openings corresponding to the packing beds are provided on the spray pipe.

[0014] By adopting the above technical solution and using multi-layer fillers and spraying methods, the effect of flue gas desulfurization and dust removal can be improved.

[0015] Optionally, the desulfurization tower is provided with a plurality of guide cone disks corresponding one-to-one to the packing bed and located directly below the packing bed, and the guide cone disks are each provided with an air guide gap for the flue gas to circulate, and the side wall of the desulfurization tower is provided with a reflux pipe connected to its own inner cavity, and the multiple liquid inlets of the reflux pipe correspond one-to-one to each guide cone disk, and the discharge port of the reflux pipe is connected to the bottom of the inner cavity of the desulfurization tower.

[0016] By adopting the above technical scheme, the alkaline solution that has reacted with the flue gas in the upper packed bed can be introduced from the side to the bottom of the desulfurization tower, preventing the alkaline solution in the upper layer from directly merging into the alkaline solution in the lower packed bed that has not reacted with the flue gas, so as to avoid the pH value of the alkaline solution in the lower layer being reduced due to dilution, thereby effectively carrying out the flue gas desulfurization and dust removal work in each layer of the packed bed.

[0017] Optionally, the guide cone is composed of a plurality of conical rings arranged in a stacked form, and the diameters of the plurality of conical rings increase sequentially from the inside to the outside, and the air guide gap is located at the junction of every two adjacent conical rings.

[0018] By adopting the above technical solution, the rising smoke can be guided and at the same time, the smoke can be prevented from converging to a certain extent.

[0019] Optionally, the rotating rod is provided with centrifugal blades for diffusing the smoke in a circumferential direction.

[0020] By adopting the above technical solution, during the rotation of the rotating rod, the centrifugal blades can generate centrifugal gravity, causing the smoke to diffuse in a circumferential direction, thereby dispersing the rising smoke and evenly entering the packing bed.

[0021] Optionally, an overflow plate is provided at the bottom of the desulfurization tower to form a sedimentation area at the bottom of the desulfurization tower.

[0022] By adopting the above technical solution, when the alkaline solution after the reaction falls to the bottom of the desulfurization tower, a sedimentation area can be formed at the bottom of the desulfurization tower, so that the dust entrained in the alkaline solution can settle, and the alkaline solution on the surface will pass over the overflow plate and enter the subsequent circulation work.

[0023] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Vibration displacement is used to move the packing so that the alkaline solution is evenly filled in the packing bed, reducing the probability that the filler gaps are not evenly penetrated by the alkaline solution. At the same time, the residence time of the flue gas in the desulfurization tower can be extended by periodically blocking the flue gas discharge process, reducing the possibility of the flue gas being discharged from the desulfurization tower without contacting the alkaline solution.

[0025] 2. During the displacement of the packing, the mutual friction between the packing and the continuous change of the packing gaps can be used to increase the rate at which the alkaline solution entrains the dust and discharges it downward, reducing the probability that the packing gaps are blocked by dust and affect the fluidity of the flue gas.

[0026] 3. While using multi-layer fillers and multi-layer spraying to improve the flue gas desulfurization and dust removal effect, the alkaline solution that has reacted with the flue gas in the upper layer of the filler bed can be introduced from the side to the bottom of the desulfurization tower to prevent the upper alkaline solution from directly merging into the alkaline solution that has not reacted with the flue gas in the lower layer of the filler bed, so as to avoid the pH value of the lower alkaline solution being reduced due to dilution, so that the flue gas desulfurization and dust removal work in each layer of the filler bed can be carried out effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a flue gas dust removal and desulfurization reaction device for this application;

[0028] Figure 2 Cross-section of the desulfurization tower for this application Figure 1 ;

[0029] Figure 3 Cross-section of the desulfurization tower for this application Figure 2 ;

[0030] Figure 4 For this application Figure 3 A partial enlarged view of the middle area A;

[0031] Figure 5 This is a schematic diagram of the structure of the spiral rod and spiral hole of this application;

[0032] Figure 6 This is a schematic diagram of the structure of the packed bed of this application;

[0033] Figure 7 This is a schematic diagram of the structure of the guide cone of this application.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. Desulfurization tower; 11. Packing bed; 12. Liquid storage tank; 13. Liquid supply pump; 14. Spray pipe; 2. Carrying plate; 21. Exhaust port; 22. Turning rod; 23. Rubber rod; 24. Bump; 3. Lifting drive member; 31. Transition plate; 32. Spring; 33. Sealing plate; 4. Linkage member; 41. Screw rod; 42. Spiral hole; 43. Avoidance chamber; 5. Bristles; 6. Guide cone; 61. Air guide gap; 62. Reflux pipe; 7. Centrifugal blades; 8. Overflow plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 7 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0036] Reference Figure 1 , Figure 2 and Figure 3 This embodiment provides a flue gas dust removal and desulfurization reaction device, including a desulfurization tower 1, a packed bed 11, a spray pipe 14, a carrier plate 2, an exhaust port 21, a plugging mechanism and a vibration mechanism. The packed bed 11 is arranged inside the desulfurization tower 1, and the packing inside the packed bed 11 is a spherical packing. The spray pipe 14 is connected to the inner cavity of the desulfurization tower 1 and is located above the packed bed 11. The carrier plate 2 is arranged at the top of the desulfurization tower 1, and the exhaust port 21 is opened on the carrier plate 2; the plugging mechanism is arranged at the top of the desulfurization tower 1, and is used to periodically plug the exhaust port 21; the vibration mechanism is arranged between the desulfurization tower 1 and the packed bed 11, and can move the packing inside the packed bed 11 in the form of vibration displacement.

[0037] Among them, refer to Figure 3 and Figure 4 The blocking mechanism includes a lifting drive member 3, a transition plate 31, a spring 32 and a sealing plate 33. The lifting drive member 3 is arranged in the middle of the carrier plate 2, the transition plate 31 is arranged at the execution end at the bottom of the lifting drive member 3, and the sealing plate 33 is vertically slidably connected to the transition plate 31 through the spring 32. The lifting drive member 3 can use a cylinder, and the cylinder is used to alternately extend and contract to drive the sealing plate 33 to move up and down, so as to achieve periodic blocking of the exhaust port 21 by the sealing plate 33.

[0038] Among them, refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 The vibration mechanism includes a rotating rod 22, a rubber rod 23, a protrusion 24 and a linkage member 4. The rotating rod 22 is rotatably connected to the middle of the carrier plate 2 and penetrates the packing bed 11 from top to bottom. The rubber rod 23 is evenly arranged on the outer arc surface of the rotating rod 22, and the protrusion 24 is evenly arranged on the bottom surface of the packing bed 11. When the rotating rod 22 drives the rubber rod 23 to rotate, the rubber rod 23 collides with the protrusion 24 to vibrate the packing bed 11. The linkage member 4 is arranged between the transition plate 31 and the rotating rod 22, and can rotate the rotating rod 22 when the lifting drive member 3 drives the transition plate 31 to rise and fall.

[0039] Among them, refer to Figure 4 and Figure 5 The linkage 4 includes a spiral rod 41, a spiral hole 42 and an avoidance cavity 43. The spiral rod 41 is fixedly connected to the center of the bottom surface of the transition plate 31. The spiral rod 41 should be a spiral rod body with a large pitch, a large lead angle and no self-locking property. The central axis of the spiral rod 41 and the rotating rod 22 coincide. The spiral hole 42 and the avoidance cavity 43 are both opened at the top of the rotating rod 22 and match the spiral rod 41. When the transition plate 31 is vertically displaced, the spiral rod 41 will move with the transition plate 31. At this time, the spiral hole 42 will cause the rotating rod 22 to rotate due to the pressure exerted by the spiral surface on the spiral rod 41.

[0040] Among them, refer to Figure 1 and Figure 2 A liquid storage tank 12 is arranged on the base where the desulfurization tower 1 is located. The liquid storage tank 12 is provided with a liquid supply pump 13 connected to itself. The liquid supply port of the liquid supply pump 13 is connected to the spray pipe 14. A demister is arranged on the top of the desulfurization tower 1 to capture mist particles and droplets entrained in the flue gas.

[0041] When the flue gas is introduced into the desulfurization tower 1 through the smoke inlet pipe at the bottom of the desulfurization tower 1, the liquid supply pump 13 passes the alkaline solution in the liquid storage tank 12 into the interior of the desulfurization tower 1 through the spray pipe 14, so that the alkaline solution drips onto the packing bed 11 and seeps downward from the gaps in the packing inside, thereby carrying out the dust removal and desulfurization work of the flue gas.

[0042] In the subsequent flue gas dust removal and desulfurization process, the lifting drive member 3 can periodically extend and contract. When the lifting drive member 3 extends downward, it will drive the transition plate 31 and the sealing plate 33 to move downward together until the sealing plate 33 blocks the exhaust port 21, thereby blocking the exhaust process of the flue gas, allowing the flue gas to stay in the desulfurization tower 1 for a sufficient time, thereby reducing the possibility that the flue gas is directly discharged from the desulfurization tower 1 without reacting with the alkaline solution; when the exhaust port 21 is blocked and the lifting drive member 3 continues to extend, the spring 32 will be gradually compressed, and the rotating rod 22 will rotate under the action of the linkage member 4. At this time, the rubber rod 23 that rotates with the rotating rod 22 will continuously hit the protrusion 24, causing the filler inside the filler bed 11 to vibrate and displace, thereby causing the alkaline solution to be evenly distributed on the outer surface of the filler as the filler moves, thereby reducing the probability that the filler gaps are not evenly penetrated by the alkaline solution.

[0043] After the flue gas stays in the desulfurization tower 1 for a sufficient time, the lifting drive member 3 contracts upward to drive the transition plate 31 and the sealing plate 33 to move up and reset together, so that the flue gas rises from the exhaust port 21. After the flue gas passes through the demister arranged on the top of the desulfurization tower 1, the flue gas will continue to rise and be discharged from the desulfurization tower 1.

[0044] In addition, the gaps in the packing that are in a continuously changing state can extend the passage time of the flue gas to a certain extent, allowing the flue gas to fully contact and react with the alkaline solution; and as the flue gas dust removal and desulfurization work continues, the dust in the flue gas will gradually adhere to the packing. As the packings rub against each other and the gaps in the packings continue to change, the alkaline solution can entrain the dust and discharge it downward, reducing the probability of the packing gaps being blocked by dust and affecting the fluidity of the flue gas.

[0045] Reference Figure 2 and Figure 6 The top wall of the packing bed 11 is provided with bristles 5 .

[0046] When the filler inside the filler bed 11 is vibrated and displaced, the dust attached to the outer surface of the filler will be scraped by the bristles 5 due to the presence of the bristles 5, thereby further improving the dust cleaning effect.

[0047] Reference Figure 1 and Figure 2 There are multiple packing beds 11, and the spray pipe 14 is provided with multiple spray ports corresponding to the packing beds 11 one by one.

[0048] Among them, refer to Figure 2 , Figure 3 and Figure 7 , a drainage mechanism is arranged inside the desulfurization tower 1, which can prevent the alkaline solution dripping from the upper packing bed 11 from directly flowing into the lower packing bed 11. The drainage mechanism includes a guide cone 6, an air guide gap 61 and a reflux pipe 62. A plurality of guide cones 6 are arranged and correspond one-to-one with the packing bed 11, and the guide cone 6 is located directly below the packing bed 11 corresponding to itself. The guide cone 6 is arranged in a stacked form by a plurality of conical rings, and the diameters of the plurality of conical rings increase successively from the inside to the outside, and the air guide gap 61 is located at the junction of two adjacent conical rings; the reflux pipe 62 is arranged on the side wall of the desulfurization tower 1 and is connected to the inner cavity of the desulfurization tower 1, and the plurality of liquid inlets of the reflux pipe 62 correspond one-to-one with the guide cone 6, and the discharge port of the reflux pipe 62 is connected to the bottom of the inner cavity of the desulfurization tower 1.

[0049] The use of multiple layers of fillers and spraying can improve the effect of flue gas desulfurization and dust removal. Due to the arrangement of the guide cone 6 and the reflux pipe 62, the alkaline solution that has reacted with the flue gas in the upper packed bed 11 can be introduced from the side to the bottom of the desulfurization tower 1, preventing the upper alkaline solution from directly merging into the alkaline solution that has not reacted with the flue gas in the lower packed bed 11, so as to avoid the pH value of the lower alkaline solution being reduced due to dilution, thereby effectively carrying out the flue gas desulfurization and dust removal work in each layer of the packed bed 11.

[0050] Reference Figure 2 and Figure 3 The rotating rod 22 is provided with centrifugal blades 7 for diffusing the smoke in a circumferential direction.

[0051] During the rotation of the rotating rod 22 , the centrifugal blades 7 can generate centrifugal force to diffuse the smoke in a circumferential direction, so that the rising smoke is dispersed and evenly enters the packing bed 11 .

[0052] Reference Figure 2 An overflow plate 8 is provided at the bottom of the desulfurization tower 1 to form a sedimentation area at the bottom of the desulfurization tower 1.

[0053] When the alkaline solution after the reaction falls to the bottom of the desulfurization tower 1, a sedimentation area will be formed at the bottom of the desulfurization tower 1 under the barrier effect of the overflow plate 8, so that the dust entrained in the alkaline solution can settle, and the alkaline solution on the surface will pass over the overflow plate 8 and enter the subsequent circulation work, reducing the difficulty of subsequent treatment of the alkaline solution.

[0054] The implementation principle of a flue gas dust removal and desulfurization reaction device in the embodiment of the present application is:

[0055] When the flue gas is introduced into the desulfurization tower 1 through the smoke inlet pipe at the bottom of the desulfurization tower 1, the liquid supply pump 13 passes the alkaline solution in the liquid storage tank 12 into the interior of the desulfurization tower 1 through the spray pipe 14, so that the alkaline solution drips onto the packing bed 11 and seeps downward from the gaps in the packing inside, thereby carrying out the dust removal and desulfurization work of the flue gas.

[0056] In the subsequent flue gas dust removal and desulfurization process, the lifting drive member 3 can be extended and retracted periodically. When the lifting drive member 3 extends downward, it will drive the transition plate 31 and the sealing plate 33 to move downward together until the sealing plate 33 blocks the exhaust port 21, thereby blocking the exhaust process of the flue gas, allowing the flue gas to stay in the desulfurization tower 1 for a sufficient time, thereby reducing the possibility that the flue gas is directly discharged from the desulfurization tower 1 without reacting with the alkaline solution; when the exhaust port 21 is blocked and the lifting drive member 3 continues to extend, the spring 32 will be gradually compressed, and the rotating rod 22 will rotate under the action of the linkage member 4. At this time, the rubber rod 23 that rotates with the rotating rod 22 will continuously hit the protrusion 24, causing the filler inside the filler bed 11 to vibrate and displace, thereby causing the alkaline solution to be evenly distributed on the outer surface of the filler as the filler moves, thereby reducing the probability that the filler gaps are not evenly penetrated by the alkaline solution.

[0057] After the flue gas stays in the desulfurization tower 1 for a sufficient time, the lifting drive member 3 contracts upward to drive the transition plate 31 and the sealing plate 33 to move up and reset together, so that the flue gas rises from the exhaust port 21. After the flue gas passes through the demister arranged on the top of the desulfurization tower 1, the flue gas will continue to rise and be discharged from the desulfurization tower 1.

[0058] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A flue gas dust removal and desulfurization reaction device, comprising a desulfurization tower, a packed bed arranged in the middle of the desulfurization tower, and a spray pipe for spraying an alkaline solution above the packed bed, characterized in that: An exhaust port for flue gas circulation is provided at the top of the desulfurization tower, a rotating rod capable of penetrating the packing bed is rotatably connected to the top of the desulfurization tower, a rubber rod is provided on the rotating rod, and a plurality of protrusions capable of abutting against the rubber rod are provided at the bottom of the packing bed; A lifting drive member is provided at the top of the desulfurization tower, and a sealing plate capable of sealing the exhaust port is vertically slidably connected to the execution end of the lifting drive member; A linkage member is provided between the lifting drive member and the rotating rod, and is used to rotate the rotating rod when the lifting drive member drives the transition plate to rise and fall; The linkage member includes a spiral rod fixedly connected to the execution end of the lifting drive member, and the central axes of the spiral rod and the rotating rod coincide with each other. The top of the rotating rod is provided with a spiral hole matching the spiral rod and an avoidance cavity for inserting the spiral rod; The desulfurization tower is provided with a plurality of guide cones corresponding to the packing bed one by one and located directly below the packing bed, and each guide cone is provided with a gas guide gap for flue gas circulation. The side wall of the desulfurization tower is provided with a reflux pipe connected to its inner cavity, and the plurality of liquid inlets of the reflux pipe correspond to each guide cone one by one, and the liquid discharge port of the reflux pipe is connected to the bottom of the inner cavity of the desulfurization tower; The rotating rod is provided with centrifugal blades for diffusing the smoke in a circumferential direction; When the lifting drive member extends downward, it drives the transition plate and the sealing plate to move downward until the sealing plate blocks the exhaust port, thereby blocking the exhaust of flue gas and allowing the flue gas to stay in the desulfurization tower for a sufficient time; When the exhaust port is blocked and the lifting drive member continues to extend, the spring will be gradually compressed, and the rotating rod will rotate under the action of the linkage member. At this time, the rubber rod rotating with the rotating rod will continuously hit the bump, causing the filler inside the packing bed to vibrate and displace, thereby making the alkaline solution evenly distributed on the outer surface of the filler as the filler moves, reducing the probability that the filler gaps are not evenly penetrated by the alkaline solution; After the flue gas stays in the desulfurization tower for a sufficient period of time, the lifting drive member contracts upward to drive the transition plate and the sealing plate to move upward and reset together, so that the flue gas can rise from the exhaust port.

2. A flue gas dust removal and desulfurization reaction device according to claim 1, characterized in that: The inner top wall of the packing bed is provided with bristles.

3. A flue gas dust removal and desulfurization reaction device according to claim 1, characterized in that: There are multiple packing beds, and the spray pipe is provided with multiple spray ports corresponding to the packing beds one by one.

4. A flue gas dust removal and desulfurization reaction device according to claim 1, characterized in that: The guide cone is arranged in a stacked form by a plurality of conical rings, and the diameters of the plurality of conical rings increase from the inside to the outside, and the air guide gap is located at the junction of every two adjacent conical rings.

5. A flue gas dust removal and desulfurization reaction device according to claim 1, characterized in that: An overflow plate is provided at the bottom of the desulfurization tower to form a sedimentation area at the bottom of the desulfurization tower.

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