Dry desulfurization and denitrification reactor

Abstract

The utility model provides a dry desulfurization and denitrification reactor. The dry desulfurization and denitrification reactor comprises a bottom plate; the supporting frame is fixedly connected to the top of the bottom plate, a first-stage reaction barrel is installed at the top of the supporting frame, a plurality of first arc-shaped retarding plates are alternately installed in the first-stage reaction barrel, an air inlet pipe is installed at the bottom of the first-stage reaction barrel, and a connecting pipe is installed at the top of the first-stage reaction barrel; a second-stage reaction barrel is mounted at the top of the first-stage reaction barrel through a mounting frame, a plurality of second arc-shaped retarding plates are alternately mounted in the second-stage reaction barrel, and medicament conveying structures are mounted at the tops of the first-stage reaction barrel and the second-stage reaction barrel. According to the dry desulfurization and denitrification reactor provided by the utility model, dual reaction is adopted through the design, and the arc-shaped retarding plate and the mixing frame are matched to enable flue gas to uniformly flow in the reaction barrel to form turbulent flow, so that the sufficient reaction of sulfur nitrate in the flue gas and an absorbent is improved, and the desulfurization and denitrification effect is improved.

Description

A dry desulfurization and denitrification reactor Technical Field

[0001] This utility model relates to the field of dry desulfurization and denitrification reactor technology, and in particular to a dry desulfurization and denitrification reactor. Background Technology

[0002] Thermal power plants generate large amounts of sulfur and nitrate-containing waste gases from burning coal. These waste gases, when released into the atmosphere, cause pollution and form acid rain. Desulfurization and denitrification equipment in thermal power plants is used to treat these waste gases containing large amounts of sulfur and nitrate.

[0003] Desulfurization and denitrification reactors are divided into wet and dry types. Dry desulfurization and denitrification uses limestone powder as an absorbent and is suitable for small and medium-sized boilers. The limestone powder reacts with the flue gas containing sulfur and nitrate inside the reactor.

[0004] In the existing dry desulfurization and denitrification reactors, the flue gas containing sulfur and nitrate flows at a relatively high velocity in the reactor, which cannot fully react with the absorbent of the dry denitrification and desulfurization process, thus affecting the denitrification and desulfurization effect.

[0005] Therefore, it is necessary to provide a dry desulfurization and denitrification reactor to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a dry desulfurization and denitrification reactor, which solves the problem that the flue gas containing sulfur and nitrate flows too fast in the reactor, causing insufficient reaction between the flue gas and the absorbent and reducing the desulfurization and denitrification effect.

[0007] To solve the above-mentioned technical problems, the dry desulfurization and denitrification reactor provided by this utility model includes: a bottom plate;

[0008] A support frame is fixedly connected to the top of the base plate. A primary reaction tank is installed on the top of the support frame. Multiple first arc-shaped deceleration plates are alternately installed inside the primary reaction tank. An air inlet pipe is installed at the bottom of the primary reaction tank. A connecting pipe is installed at the top of the primary reaction tank. A secondary reaction tank is installed on the top of the primary reaction tank via a mounting frame. Multiple second arc-shaped deceleration plates are alternately installed inside the secondary reaction tank. A reagent delivery structure is installed on the top of the primary and secondary reaction tanks.

[0009] A fixed frame is connected to the top of the secondary reaction tank. A drive assembly is installed on the top of the fixed frame. A rotating shaft is installed at the output end of the drive assembly. Two mixing frames are installed on the outer surface of the rotating shaft through two mounting rings. An exhaust pipe is installed on the outer surface of the secondary reaction tank at the top position.

[0010] The arc-shaped deceleration plate is semi-conical. The reagent delivery structure is pneumatically fed, using compressed air or other gases as power to deliver the reagent to the reactor through pipelines. At the pipeline inlet, the reagent mixes with the high-speed airflow to form a gas-solid two-phase flow, and then is injected from a specific position in the reactor. In reactors with a staged reaction zone structure, multiple pneumatic delivery nozzles can be set at different positions in the pre-reaction zone and main reaction zone to achieve precise reagent delivery and maximize the reagent's effect in each reaction zone. When the flue gas containing pollutants enters the reaction tank, the airflow direction changes continuously under the action of the arc-shaped deceleration plate, forming a strong turbulent effect. The shape of the mixing rack is designed to both drive the airflow and promote the diffusion of reagent particles. When the flue gas enters the interior of the reaction tank, the rotating shaft drives the mixing rack to rotate at high speed, allowing the flue gas and reagent to mix fully in the rotating flow field. This structure is particularly suitable for large-scale dry desulfurization and denitrification reactors that treat high-concentration pollutant flue gas. By optimizing the rotation speed and shape of the mixing rack, the reaction rate can be effectively improved, and the reactor volume and floor space can be reduced.

[0011] Preferably, a control box is mounted on the top of the base plate, and a door is rotatably connected to the front of the control box;

[0012] The control box contains power switches and controllers for operating the equipment.

[0013] Preferably, the other end of the air intake pipe is fitted with a connecting pipe via a connector, and the other end of the connecting pipe is fixedly connected to a filter assembly.

[0014] Preferably, the filter assembly includes a filter box, an interceptor component, and an inlet pipe, wherein the filter box is used to install the interceptor component capable of filtering dust.

[0015] Preferably, the drive assembly includes a protective housing, a drive component, and an angle sensor, wherein the drive component is used to provide rotational driving force;

[0016] An angle sensor, in conjunction with the controller of the drive component, can control the rotation speed and rotation angle.

[0017] Preferably, a mounting base is installed on one side of the control box, and an operation panel is installed on one side of the mounting base.

[0018] Compared with related technologies, the dry desulfurization and denitrification reactor provided by this utility model has the following beneficial effects:

[0019] This invention provides a dry desulfurization and denitrification reactor. To improve the reaction efficiency of the dry desulfurization and denitrification reactor, the reactor is divided into a primary reaction tank and a secondary reaction tank. Multiple first arc-shaped deceleration plates and multiple second arc-shaped deceleration plates are alternately installed in the primary and secondary reaction tanks. The first and second arc-shaped deceleration plates continuously change the airflow direction of the flue gas inside the reaction tank, creating a strong turbulent effect. A drive assembly is installed at the top of the secondary reaction tank, providing rotational driving force to rotate two mixing frames on the outer surface of the rotating shaft in both the primary and secondary reaction tanks. This allows the flue gas and reagents to be fully mixed in the rotating flow field, improving the reaction effect. This design employs a dual reaction, combined with the arc-shaped deceleration plates and mixing frames, to ensure uniform flow and turbulence of the flue gas inside the reaction tank, improving the full reaction of sulfur and nitrates in the flue gas with the absorbent and enhancing the desulfurization and denitrification effect. Attached Figure Description

[0020] Figure 1 is a schematic diagram of a preferred embodiment of the dry desulfurization and denitrification reactor provided by this utility model;

[0021] Figure 2 is a structural schematic diagram of the exhaust pipe provided by this utility model;

[0022] Figure 3 is a structural schematic diagram of the second arc-shaped deceleration plate provided by this utility model;

[0023] Figure 4 is a structural schematic diagram of the driving component provided by this utility model;

[0024] Figure 5 is a structural schematic diagram of the interception component provided by this utility model.

[0025] The diagram is labeled as follows: 1. Base plate, 2. Control box, 3. Box door, 4. Mounting base, 5. Operation panel, 6. Support frame, 7. Primary reaction tank, 8. Mounting frame, 9. Secondary reaction tank, 10. Fixing frame, 11. Drive assembly, 111. Protective shell, 112. Drive component, 113. Angle sensor, 12. Reagent delivery structure, 13. Connecting pipe, 14. Connecting pipe, 15. Filter assembly, 151. Filter box, 152. Interception component, 153. Inlet pipe, 16. Connecting joint, 17. Air inlet pipe, 18. Exhaust pipe, 19. First arc-shaped deceleration plate, 20. Mounting ring, 21. Second arc-shaped deceleration plate, 22. Rotating shaft, 23. Mixing frame. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Please refer to Figures 1, 2, 3, 4, and 5. Figure 1 is a schematic diagram of a preferred embodiment of the dry desulfurization and denitrification reactor provided by this invention; Figure 2 is a schematic diagram of the exhaust pipe provided by this invention; Figure 3 is a schematic diagram of the arc-shaped deceleration plate provided by this invention; Figure 4 is a schematic diagram of the driving component provided by this invention; and Figure 5 is a schematic diagram of the interception component provided by this invention. The dry desulfurization and denitrification reactor includes: a bottom plate 1;

[0028] A support frame 6 is fixedly connected to the top of the base plate 1. A primary reaction tank 7 is installed on the top of the support frame 6. Multiple first arc-shaped deceleration plates 19 are alternately installed inside the primary reaction tank 7. An air inlet pipe 17 is installed at the bottom of the primary reaction tank 7. A connecting pipe 13 is installed at the top of the primary reaction tank 7. A secondary reaction tank 9 is installed on the top of the primary reaction tank 7 through a mounting frame 8. Multiple second arc-shaped deceleration plates 21 are alternately installed inside the secondary reaction tank 9. A reagent delivery structure 12 is installed on the top of the primary reaction tank 7 and the secondary reaction tank 9.

[0029] A fixing frame 10 is connected to the top of the secondary reaction tank 9. A drive assembly 11 is installed on the top of the fixing frame 10. A rotating shaft 22 is installed at the output end of the drive assembly 11. Two mixing frames 23 are installed on the outer surface of the rotating shaft 22 through two mounting rings 20. An exhaust pipe 18 is installed on the outer surface of the secondary reaction tank 9 at the top position.

[0030] The arc-shaped deceleration plate is semi-conical. The reagent delivery structure 12 is a pneumatic delivery type, using compressed air or other gases as power to deliver the reagent to the reactor through pipelines. At the pipeline inlet, the reagent mixes with the high-speed airflow to form a gas-solid two-phase flow, which is then sprayed into the reactor from a specific location. In a reactor with a staged reaction zone structure, multiple pneumatic delivery nozzles can be set at different locations in the pre-reaction zone and main reaction zone to achieve precise reagent delivery and maximize the reagent's effect in each reaction zone. When the flue gas containing pollutants enters the reaction tank, the airflow direction continuously changes under the action of the arc-shaped deceleration plate, forming... The strong turbulence effect, the shape of the mixing rack 23 is designed to both drive the airflow and promote the diffusion of reagent particles. When the flue gas enters the inside of the reaction tank, the rotating shaft 22 drives the mixing rack 23 to rotate at high speed, so that the flue gas and reagent are fully mixed in the rotating flow field. This structure is particularly suitable for large-scale dry desulfurization and denitrification reactors that treat flue gas with high concentration of pollutants. By optimizing the rotation speed and shape of the mixing rack 23, the reaction rate can be effectively improved and the volume and floor space of the reactor can be reduced. The two mixing racks 23 are located inside the primary reaction tank 7 and the secondary reaction tank 9, respectively, and are connected to the top of the connecting pipe 13 and the secondary reaction tank 9.

[0031] The control box 2 is installed on the top of the base plate 1, and the front of the control box 2 is rotatably connected to the door 3;

[0032] The control box 2 contains power switches and controllers for controlling the operation of the equipment.

[0033] The other end of the air intake pipe 17 is connected to the connecting pipe 14 via the connecting joint 16, and the other end of the connecting pipe 14 is fixedly connected to the filter assembly 15.

[0034] The filter assembly 15 can perform preliminary filtration of large particles in the flue gas.

[0035] The filter assembly 15 includes a filter box 151, an interceptor 152, and an inlet pipe 153. The filter box 151 is used to install the interceptor 152, which can filter dust.

[0036] Connect the inlet pipe 153 to the flue gas duct.

[0037] The drive assembly 11 includes a protective shell 111, a drive component 112 and an angle sensor 113, wherein the drive component 112 is used to provide rotational driving force.

[0038] The angle sensor 113, together with the controller of the drive component 112, can control the rotation speed and rotation angle.

[0039] A mounting base 4 is installed on one side of the control box 2, and an operation panel 5 is installed on one side of the mounting base 4.

[0040] The operation panel 5 can control the operation of the equipment on the base plate 1.

[0041] The working principle of the dry desulfurization and denitrification reactor provided by this utility model is as follows:

[0042] The reactor is divided into a primary reaction chamber 7 and a secondary reaction chamber 9. Multiple first arc-shaped deceleration plates 19 and multiple second arc-shaped deceleration plates 21 are then alternately installed in the primary reaction chamber 7 and the secondary reaction chamber 9, respectively. The first arc-shaped deceleration plates 19 and the second arc-shaped deceleration plates 21 continuously change the airflow direction of the flue gas inside the reaction chamber, creating a strong turbulent effect. A drive assembly 11 is installed at the top of the secondary reaction chamber 9. The drive assembly 11 provides rotational driving force to drive two mixing frames 23 on the outer surface of the rotating shaft 22 in the primary reaction chamber. Rotating within the primary reaction tank 7 and the secondary reaction tank 9 allows the flue gas and reagents to mix thoroughly in the rotating flow field, enhancing the reaction effect. In actual use, the flue gas enters sequentially from the inlet pipe 17 through the interior of the primary reaction tank 7 and the secondary reaction tank. During this process, the reagent delivery structure 12 delivers the absorbent from the top of the primary reaction tank 7 and the secondary reaction tank to the interior of the reaction tank. The flue gas is slowed down by the first arc-shaped deceleration plate 19 and the second arc-shaped deceleration plate 21, and the mixing frame 23 ensures that the flue gas and absorbent are fully mixed. The well-reacted flue gas is discharged from the exhaust pipe 18.

[0043] Compared with related technologies, the dry desulfurization and denitrification reactor provided by this utility model has the following beneficial effects:

[0044] To improve the reaction efficiency of the dry desulfurization and denitrification reactor, the reactor is divided into a primary reaction tank 7 and a secondary reaction tank 9. Multiple first arc-shaped deceleration plates 19 and multiple second arc-shaped deceleration plates 21 are alternately installed in the primary reaction tank 7 and the secondary reaction tank 9, respectively. The first and second arc-shaped deceleration plates 19 and 21 continuously change the airflow direction of the flue gas inside the reaction tank, creating a strong turbulent effect. A drive assembly 11 is installed at the top of the secondary reaction tank 9. The drive assembly 11 provides rotational driving force, causing two mixing frames 23 on the outer surface of the rotating shaft 22 to rotate in the primary reaction tank 7 and the secondary reaction tank 9, respectively. This allows the flue gas and reagents to be fully mixed in the rotating flow field, improving the reaction efficiency. This design employs a dual reaction, combined with the arc-shaped deceleration plates and mixing frames 23, to create uniform turbulence within the reaction tank, enhancing the reaction of sulfur and nitrates in the flue gas with the absorbent and improving the desulfurization and denitrification efficiency.

[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dry desulfurization and denitrification reactor, characterized in that, include: A base plate; a support frame, the support frame being fixedly connected to the top of the base plate, a primary reaction tank being mounted on the top of the support frame, multiple first arc-shaped deceleration plates being alternately installed inside the primary reaction tank, an air inlet pipe being mounted at the bottom of the primary reaction tank, a connecting pipe being mounted on the top of the primary reaction tank, a secondary reaction tank being mounted on the top of the primary reaction tank via a mounting bracket, multiple second arc-shaped deceleration plates being alternately installed inside the secondary reaction tank, and a reagent delivery structure being mounted on the top of the primary and secondary reaction tanks; a fixed frame, the fixed frame being connected to the top of the secondary reaction tank, a drive assembly being mounted on the top of the fixed frame, a rotating shaft being mounted on the output end of the drive assembly, two mixing frames being mounted on the outer surface of the rotating shaft via two mounting rings, and an exhaust pipe being mounted on the top position of the outer surface of the secondary reaction tank.

2. The dry desulfurization and denitrification reactor according to claim 1, characterized in that, A control box is mounted on the top of the base plate, and a door is rotatably connected to the front of the control box.

3. The dry desulfurization and denitrification reactor according to claim 1, characterized in that, The other end of the intake pipe is connected to a connecting pipe via a connector, and the other end of the connecting pipe is fixedly connected to a filter assembly.

4. The dry desulfurization and denitrification reactor according to claim 3, characterized in that, The filter assembly includes a filter box, an interceptor component, and an inlet pipe. The filter box is used to install the interceptor component, which can filter dust.

5. The dry desulfurization and denitrification reactor according to claim 1, characterized in that, The drive assembly includes a protective housing, a drive component, and an angle sensor, the drive component being used to provide rotational driving force.

6. The dry desulfurization and denitrification reactor according to claim 2, characterized in that, A mounting base is installed on one side of the control box, and an operation panel is installed on one side of the mounting base.

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