A high-temperature flue gas emission desulfurization and denitrification device

Abstract

This invention relates to the field of air pollution control technology, specifically a high-temperature flue gas emission desulfurization and denitrification device, comprising a denitrification mechanism and a desulfurization mechanism. The denitrification mechanism employs a vacuum-jacketed mounting cylinder, which contains an array of denitrification arc-shaped guide holes and a combined denitrification module. The module includes a denitrification guide cylinder, an arc-shaped filter screen, and a limiting guide cylinder with oblique guide grooves, effectively expanding the catalytic area and uniformly distributing the flow. A back-blowing fan and an elastically limiting rotating guide plate are also included to achieve online vibration self-cleaning. The desulfurization mechanism introduces flue gas into the desulfurization mounting cylinder through a gradient annular guide cylinder and uniformly enlarging inlet holes from top to bottom, forming a gradient three-dimensional desulfurization. A bottom discharge drive and a spiral guide plate ensure uniform catalyst renewal. This device has a compact structure, excellent insulation and airflow organization, and solves problems such as ash accumulation and blockage, difficult maintenance, and low catalyst utilization in existing technologies, thus improving denitrification and desulfurization efficiency and continuous operation stability.

Description

Technical Field

[0001] This invention relates to the field of air pollution control technology, and in particular to a high-temperature flue gas emission desulfurization and denitrification device. Background Technology

[0002] High-temperature flue gas is a common emission in industrial production processes. Its composition is complex, typically containing sulfur oxides, nitrogen oxides, and a large amount of particulate matter. With the rapid advancement of industrialization and urbanization, the technological demand for high-temperature flue gas purification is becoming increasingly urgent. From the development history of flue gas treatment processes, denitrification and desulfurization are two core components. These two processes differ significantly in reaction mechanisms, catalyst selection, and operating temperature windows, which necessitates that most current flue gas purification systems employ separate, series-connected independent reaction units.

[0003] In traditional split-type treatment processes, the denitrification unit and the desulfurization unit are usually located in different reaction towers or absorption towers, connected by long flue ducts. This layout first results in a large footprint, complex piping, and high construction costs for the entire purification system. More importantly, significant heat loss occurs during the long-distance transport of flue gas between units, leading to a temperature drop. Since denitrification reactions often have strict temperature requirements, the natural temperature decay of the flue gas causes the operating conditions before entering the desulfurization unit to deviate from the optimal reaction conditions, directly affecting the subsequent desulfurization efficiency. At the same time, controlling the airflow distribution within each reactor in the split unit is also difficult. Flue gas is prone to flow deviation and channeling when entering the catalyst bed, resulting in some catalyst not making sufficient contact with the flue gas, wasting catalytic potential, and causing unstable purification effects.

[0004] In the standalone denitrification stage, the mainstream existing technologies mostly employ catalyst modules fixedly packed within the reactor. To increase the contact area between the flue gas and the catalyst, the catalyst is often designed with a honeycomb or plate structure. However, after prolonged operation, the primary problem faced by such structures is dust blockage and ash accumulation on the catalyst surface. High-temperature flue gas inevitably contains a large amount of fine dust, which gradually deposits and bridges as it passes through the catalyst channels, leading to a rapid increase in system resistance and a significant decrease in denitrification efficiency. Therefore, frequent shutdowns are required for catalyst cleaning or replacement. Although some systems have introduced online cleaning devices, the actual results are often unsatisfactory. For example, conventional jetting airflow cannot evenly act on all catalyst surfaces, has limited effectiveness in removing highly adhesive ash, and the mechanical stress during cleaning can cause physical wear on the catalyst, shortening its effective service life. Furthermore, the disassembly and replacement of catalyst modules are cumbersome, requiring significant manpower and time, greatly increasing the system's maintenance difficulty and downtime losses.

[0005] In desulfurization units, while traditional wet processes are technologically mature and highly efficient, they generate large amounts of byproduct wastewater, leading to secondary pollution and a heavy treatment burden. Furthermore, in high-temperature flue gas treatment scenarios, the installation of wet scrubbing towers can cause a series of problems, such as "wet chimneys." Dry or semi-dry desulfurization technologies avoid wastewater issues, but there is still room for improvement in reaction rate, desulfurization efficiency, and catalyst utilization. Many dry desulfurization units use fixed-bed reactors, where flue gas passes through the catalyst bed in a single pass. In this operation, the uneven distribution of the flue gas flow field leads to inconsistent catalyst consumption rates in different areas of the bed. Catalysts in some areas may become inactive first, while catalysts in other areas are not fully utilized, resulting in low overall catalyst utilization. In addition, the removal of deactivated catalyst and the replenishment of new catalyst often require interrupting the reaction process, making continuous operation impossible. This not only disrupts the production rhythm but also requires emergency emission or treatment by backup equipment during replacement, increasing operating costs and environmental risks.

[0006] In summary, existing high-temperature flue gas treatment devices generally suffer from technical challenges such as dispersed structure, large heat loss, uneven gas-solid contact, poor and cumbersome cleaning and replacement of denitrification modules, and low utilization rate and inability to continuously and stably update desulfurization catalysts. Therefore, providing a more compact, integrated device capable of simultaneously achieving efficient denitrification and desulfurization, while possessing good self-cleaning capabilities and continuous operation performance, has become a critical issue urgently needing to be addressed in this field. Summary of the Invention

[0007] The purpose of this invention is to provide a high-temperature flue gas emission desulfurization and denitrification device to solve the technical problems existing in the prior art.

[0008] The present invention provides a high-temperature flue gas emission desulfurization and denitrification device, comprising:

[0009] The denitrification mechanism includes a vacuum jacketed mounting cylinder. Spherical guide hoods are symmetrically arranged at the upper and lower ends of the vacuum jacketed mounting cylinder. An air inlet duct is connected to the middle of the upper spherical guide hood, and a spherical guide tube is connected to the middle of the lower spherical guide hood. A denitrification mounting plate is horizontally arranged inside the vacuum jacketed mounting cylinder. Several denitrification arc-shaped guide holes are arranged in an array on the denitrification mounting plate. All denitrification arc-shaped guide holes penetrate the denitrification mounting plate, and an annular mounting plate is arranged at the lower end of the denitrification arc-shaped guide holes. Combined denitrification modules are arranged in conjunction with the denitrification arc-shaped guide holes.

[0010] The desulfurization mechanism includes a desulfurization installation cylinder, an exhaust duct is connected to one side of the upper end of the desulfurization installation cylinder, and a gradient annular guide cylinder is provided on the outer side of the middle part of the desulfurization installation cylinder. The gradient annular guide cylinder and the spherical guide cylinder are connected through a relay guide pipe.

[0011] As a further aspect of the present invention: the combined denitrification module includes a fixed mounting plate disposed below the annular mounting plate, a limiting mounting ring disposed on the edge of the fixed mounting plate, and a plurality of combined mounting holes disposed at equal angles on the limiting mounting ring, and a fixing screw hole disposed on the lower side of the denitrification mounting plate opposite to the combined mounting hole, and the opposite fixing screw hole and the combined mounting hole are connected by external bolts.

[0012] As a further aspect of the present invention: a positioning mounting ring is provided on the upper side of the fixed mounting plate, and an annular positioning groove is provided on the lower side of the annular mounting plate in conjunction with the positioning mounting ring.

[0013] As a further aspect of the present invention: a denitrification guide tube is provided above the annular mounting plate, an annular buckle is provided at the lower end of the denitrification guide tube, an annular groove is provided on the upper side of the annular mounting plate in conjunction with the annular buckle, a spherical mounting cover is provided at the upper end of the denitrification guide tube, and a plurality of filter mounting holes are provided at equal angles on the tube wall of the denitrification guide tube, and an arc-shaped filter screen is provided on each filter mounting hole.

[0014] As a further embodiment of the present invention: a rotation limiting guide hole is vertically provided on the wall of the denitrification guide cylinder between adjacent filter installation holes, and a limiting rotation guide plate is provided in conjunction with the rotation limiting guide hole. One side of the limiting rotation guide plate is movably connected to one side of the rotation limiting guide hole through a reset rotating shaft. When the other side of the rotation limiting guide hole contacts the limiting rotation guide plate, it is limited. An elastic limiting arc panel is provided on the outer side of the reset rotating shaft.

[0015] As a further embodiment of the present invention: a limiting guide tube is vertically installed through the middle of the fixed mounting plate, and several independent denitrification plates are arranged at equal angles above the fixed mounting plate between the limiting guide tube and the denitrification guide tube. Each independent denitrification plate has a limiting guide mounting post at its lower end, and a limiting guide mounting sleeve is provided on the upper side of the fixed mounting plate in conjunction with the limiting guide mounting post. The two sides of the independent denitrification plates are symmetrically provided with oblique guide grooves, and a backflow blower is provided on one side of the spherical guide tube. A dust filter is provided at the outer end of the backflow blower.

[0016] As a further embodiment of the present invention: a feeding installation cylinder is provided above the desulfurization installation cylinder, and the feeding installation cylinder and the desulfurization installation cylinder are connected by a material control valve, and a cover plate is rotatably provided at the upper end of the feeding installation cylinder.

[0017] As a further aspect of the present invention: at the connection between the gradient annular guide tube and the desulfurization installation tube, a plurality of uniform air inlets are vertically arranged at equal angles, and the uniform air inlets gradually increase in size from top to bottom.

[0018] As a further embodiment of the present invention: a discharge installation cylinder is horizontally arranged below the desulfurization installation cylinder, and the discharge installation cylinder and the desulfurization installation cylinder are connected by a connecting guide pipe. A discharge driving component is provided at one end of the discharge installation cylinder, and a discharge conduit is connected to the other end of the discharge installation cylinder. A drive shaft extending into the discharge installation cylinder is provided at one end of the discharge driving component, and a spiral guide plate is provided on the drive shaft inside the discharge installation cylinder.

[0019] As a further embodiment of the present invention: both the outer side of the vacuum jacket installation cylinder and the outer side of the desulfurization installation cylinder are provided with reinforcing mounting frames, and the outer ends of the reinforcing mounting frames are provided with fixed mounting frames, and the fixed mounting frames are provided with a plurality of fixed mounting holes.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The device combines the denitrification and desulfurization mechanisms in series, enabling continuous denitrification and desulfurization of high-temperature flue gas within the same system, with a compact overall layout. Enhanced coordination between the mounting brackets and fixed mounting frames ensures secure installation and stable operation.

[0022] The array of denitrification arc-shaped guide holes on the denitrification mounting plate can evenly distribute the flue gas to each combined denitrification module; the symmetrical oblique guide grooves on both sides of the limiting guide tube not only increase the coating area of ​​the denitrification catalyst, but also play a good guiding role for the flue gas, effectively improving the denitrification reaction efficiency.

[0023] The combined denitrification module adopts structures such as ring-shaped buckles, ring-shaped grooves, positioning installation rings, and limiting guide installation columns, which realizes the rapid positioning and disassembly of the denitrification guide tube and the limiting guide tube, significantly simplifies the catalyst replacement and cleaning process, and improves the ease of maintenance of the unit.

[0024] By using a back-blowing fan in conjunction with a limiting rotating guide plate, a reset shaft, and an elastic limiting arc panel on the denitrification guide tube, the back-blowing airflow can drive the guide plate to rotate and generate collision vibrations during reset, making it easier for accumulated dust to fall off, greatly improving the online dust removal effect and extending the stable operation cycle of the denitrification module.

[0025] The gradient annular guide tube of the desulfurization unit is equipped with multiple uniform air inlets that gradually increase in size from top to bottom. This results in a gradient distribution of the flow rate, flow volume, and contact time of the flue gas when it enters the desulfurization installation tube, forming a three-dimensional desulfurization reaction zone. This optimizes the contact effect between the flue gas and the desulfurization catalyst, significantly improving desulfurization efficiency and treatment quality.

[0026] The discharge drive unit discharges the catalyst after reaction at the bottom at a uniform speed through the drive shaft and spiral guide plate, so that the catalyst in the desulfurization installation cylinder moves downward at a uniform speed, realizing the continuous renewal of the catalyst, ensuring the continuity and stability of the desulfurization process, while avoiding catalyst waste and reducing operating costs.

[0027] The use of a vacuum-insulated installation cylinder can effectively reduce heat loss from high-temperature flue gas and maintain a suitable reaction temperature. Combined with flow guiding structures such as spherical guide hoods and spherical guide cylinders, the flue gas flow is smoother, further ensuring the stability and efficiency of the denitrification and desulfurization reaction. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a front view schematic diagram of a high-temperature flue gas emission desulfurization and denitrification device.

[0030] Figure 2 This is a schematic diagram of the rear side view of a high-temperature flue gas emission desulfurization and denitrification device.

[0031] Figure 3 This is a partial cross-sectional schematic diagram of the denitrification mechanism in a high-temperature flue gas emission desulfurization and denitrification device.

[0032] Figure 4 This is a cross-sectional schematic diagram of a high-temperature flue gas emission desulfurization and denitrification device at the guide hole on the denitrification arc surface.

[0033] Figure 5 for Figure 4 An enlarged schematic diagram of point a in the middle.

[0034] Figure 6 This is a partial cross-sectional schematic diagram of a combined denitrification module in a high-temperature flue gas emission desulfurization and denitrification device.

[0035] Figure 7 for Figure 6 Enlarged diagram of point b in the middle.

[0036] Figure 8 This is a cross-sectional schematic diagram of the denitrification guide tube in a high-temperature flue gas emission desulfurization and denitrification device.

[0037] Figure 9 for Figure 8 An enlarged view of point c in the middle.

[0038] Figure 10 This is a schematic diagram of a high-temperature flue gas emission desulfurization and denitrification device in which independent denitrification plates are installed on a fixed mounting plate.

[0039] Figure 11This is a schematic diagram of the structure of a fixed mounting plate in a high-temperature flue gas emission desulfurization and denitrification device.

[0040] Figure 12 This is a schematic diagram of the structure of an independent denitrification plate in a high-temperature flue gas emission desulfurization and denitrification device.

[0041] Figure 13 This is a partial cross-sectional schematic diagram of the desulfurization mechanism in a high-temperature flue gas emission desulfurization and denitrification device.

[0042] 1-Vacuum jacket mounting cylinder, 2-Inlet duct, 3-Spherical guide shroud, 4-Spherical guide cylinder, 5-Backflow blower, 6-Dust filter, 7-Gradient annular guide cylinder, 8-Desulfurization mounting cylinder, 9-Feed mounting cylinder, 10-Cover plate, 11-Material control valve, 12-Exhaust duct, 13-Gradient annular guide cylinder, 14-Discharge mounting cylinder, 15-Discharge drive component, 16-Connecting guide pipe, 17-Discharge duct, 18-Reinforced mounting bracket, 19-Fixed mounting bracket, 20-Fixed mounting hole, 21-Denitrification mounting plate, 22-Denitrification arc-shaped guide hole, 23-Denitrification guide cylinder, 24-Annular groove, 25-Annular 26-Fixing positioning groove, 27-Fixing screw hole, 28-Spherical mounting cover, 29-Arc-shaped filter screen, 30-Filter mounting hole, 31-Limiting rotating guide plate, 32-Fixing mounting plate, 33-Limiting mounting ring, 34-Independent denitrification plate, 35-Elastic limiting arc panel, 36-Limiting guide mounting column, 37-Limiting guide mounting sleeve, 38-Combined mounting hole, 39-Reset rotating shaft, 40-Annular buckle, 41-Positioning mounting ring, 42-Limiting guide cylinder, 43-Rotating limiting guide hole, 44-Uniform air inlet hole, 45-Drive rotating shaft, 46-Spiral guide plate, 47-Annular mounting plate, 48-Slanted guide groove. Detailed Implementation

[0043] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0044] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0045] Example 1, please refer to Figures 1-2In this embodiment of the invention, a high-temperature flue gas emission desulfurization and denitrification device includes: a denitrification mechanism and a desulfurization mechanism;

[0046] The denitrification mechanism includes a vacuum jacketed mounting cylinder 1. Spherical guide hoods 3 are symmetrically arranged at the upper and lower ends of the vacuum jacketed mounting cylinder 1. An air inlet duct 2 is connected to the middle of the upper spherical guide hood 3, and a spherical guide cylinder 4 is connected to the middle of the lower spherical guide hood 3. A denitrification mounting plate 21 is horizontally arranged inside the vacuum jacketed mounting cylinder 1. Several denitrification arc surface guide holes 22 are arrayed on the denitrification mounting plate 21. All denitrification arc surface guide holes 22 penetrate the denitrification mounting plate 21, and an annular mounting plate 46 is arranged at the lower end of the denitrification arc surface guide holes 22. Combined denitrification modules are arranged in conjunction with the denitrification arc surface guide holes 22.

[0047] The desulfurization mechanism includes a desulfurization installation cylinder 8, and an exhaust pipe 12 is connected to one side of the upper end of the desulfurization installation cylinder 8.

[0048] Both the outer side of the vacuum jacket installation cylinder 1 and the outer side of the desulfurization installation cylinder 8 are provided with a reinforcing mounting frame 18, and the outer end of the reinforcing mounting frame 18 is provided with a fixed mounting frame 19, and the fixed mounting frame 19 is provided with a plurality of fixed mounting holes 20.

[0049] The device is installed and fixed near the location where high-temperature flue gas is generated by the fixed mounting bracket 19 and its fixed mounting holes 20, and the connection between the mounting bracket 18 and the vacuum jacket mounting cylinder 1 and the desulfurization mounting cylinder 8 is strengthened to ensure the stability of the device after installation.

[0050] The high-temperature flue gas outlet pipe is connected to the inlet duct 2. The high-temperature flue gas first enters the vacuum jacket installation cylinder 1. When passing through the denitrification installation plate 21, the airflow of the high-temperature flue gas passes through the denitrification arc surface guide hole 22 and the combined denitrification module on it, so as to realize the diversion and denitrification treatment of the high-temperature flue gas.

[0051] The denitrified flue gas is introduced into the desulfurization installation cylinder 8, and the catalyst inside it is discharged from the exhaust pipe 12. During the process of passing through the desulfurization installation cylinder 8, the flue gas reacts with the catalyst inside it to desulfurize the flue gas.

[0052] Example 2, based on Example 1, please refer to... Figures 1-12In this embodiment of the invention, the combined denitrification module includes a fixed mounting plate 31 disposed below an annular mounting plate 46. A limiting mounting ring 32 is disposed on the edge of the fixed mounting plate 31. A plurality of combined mounting holes 37 are disposed at equal angles on the limiting mounting ring 32. A fixing screw hole 26 is disposed on the lower side of the denitrification mounting plate 21 opposite to the combined mounting hole 37. The fixing screw hole 26 and the combined mounting hole 37 are connected by external bolts. A positioning mounting ring 40 is disposed on the upper side of the fixed mounting plate 31. An annular positioning groove 25 is disposed on the lower side of the annular mounting plate 46 in conjunction with the positioning mounting ring 40.

[0053] A denitrification guide tube 23 is provided above the annular mounting plate 46. An annular buckle 39 is provided at the lower end of the denitrification guide tube 23. An annular groove 24 is provided on the upper side of the annular mounting plate 46 in conjunction with the annular buckle 39. A spherical mounting cover 27 is provided at the upper end of the denitrification guide tube 23. A plurality of filter mounting holes 29 are provided at equal angles on the tube wall of the denitrification guide tube 23. An arc-shaped filter screen 28 is provided on each of the filter mounting holes 29.

[0054] A rotation limiting guide hole 42 is vertically provided on the wall of the denitrification guide cylinder 23 between adjacent filter installation holes 29. A limiting rotation guide plate 30 is provided in conjunction with the rotation limiting guide hole 42. One side of the limiting rotation guide plate 30 is movably connected to one side of the rotation limiting guide hole 42 through a reset rotating shaft 38. When the other side of the rotation limiting guide hole 42 contacts the limiting rotation guide plate 30, it is limited. An elastic limiting arc panel 34 is provided on the outer side of the reset rotating shaft 38.

[0055] A limiting guide tube 41 is vertically installed through the middle of the fixed mounting plate 31. Several independent denitrification plates 33 are arranged at equal angles above the fixed mounting plate 31 between the limiting guide tube 41 and the denitrification guide tube 23. Each independent denitrification plate 33 has a limiting guide mounting post 35 at its lower end. Each fixed mounting plate 31 has a limiting guide mounting sleeve 36 on its upper side in conjunction with the limiting guide mounting post 35. The two sides of the independent denitrification plate 33 are symmetrically provided with oblique guide grooves 47.

[0056] A back-blowing fan 5 is connected to one side of the spherical guide tube 4, and a dust filter 6 is provided at the outer end of the back-blowing fan 5.

[0057] Specifically, the high-temperature flue gas first enters each denitrification arc surface guide hole 22, and is introduced through the arc surface filter 28 on the denitrification guide cylinder 23. The flue gas introduced into the denitrification guide cylinder 23 flows between the installed independent denitrification plates 33, and reacts with the denitrification catalyst coated on them to achieve denitrification. Since the independent denitrification plates 33 are symmetrically provided with inclined guide grooves 47 on both sides, the coating area of ​​the catalyst can be expanded, that is, the catalytic reaction area can be increased. At the same time, the high-temperature flue gas is guided, and the directional passage of the flue gas is improved.

[0058] The denitrified flue gas flows downward through the space enclosed by the independent denitrification plates 33 until it passes through the limiting guide tube 41 and enters the vacuum jacket installation tube 1 on the lower side of the denitrification installation plate 21. Finally, it is introduced into the desulfurization mechanism through the spherical guide tube 4.

[0059] After the denitrification process has been running for a period of time, the desulfurization mechanism is in a closed state. The air inlet duct 2 is connected to the external filter treatment equipment, and the back-blowing fan 5 is started to guide the high-speed airflow from the outside into the spherical guide tube 4. The high-speed airflow cannot enter the desulfurization mechanism and is directly introduced into the vacuum jacket installation tube 1 and guided from bottom to top. It enters the denitrification guide tube through the limiting guide tube 41 and removes the dust on the independent denitrification plate 33 and the dust on the arc surface filter screen 28 from the denitrification guide tube 23. At the same time, the back-blowing airflow pushes the limiting rotating guide plate 30 to rotate around the reset rotating shaft 38 at a certain angle until the elastic limiting arc panel 34 is deformed. Then, under the action of the elastic limiting arc panel 34 and the reset rotating shaft 38, it rotates in the opposite direction to reset and collides under the rotation limit of the rotating limiting guide hole 42. The resulting vibration makes the dust easier to fall off and improves the efficiency of back-blowing cleaning.

[0060] With the cooperation of the annular buckle 39 and the annular groove 24, the denitrification guide tube 23 can be quickly installed and removed from the annular mounting plate 46. With the cooperation of the limiting guide mounting post 35 and the limiting guide mounting sleeve 36, the independent denitrification plate 33 is assembled and installed on the fixed mounting plate 31. Then, with the cooperation of the positioning mounting ring 40 and the annular positioning groove 25, the accurate positioning of the fixed mounting plate 31 is ensured. Finally, the opposite fixing screw hole 26 and the combined mounting hole 37 are connected by external bolts to complete the combined installation, which is convenient for disassembly and improves maintenance performance.

[0061] Example 3, based on Example 1, please refer to... Figure 1 , Figure 2 , Figure 13 In this embodiment of the invention, the desulfurization mechanism further includes a gradient annular guide tube 13 disposed on the outer side of the middle part of the desulfurization installation cylinder 8. The gradient annular guide tube 13 is connected to the spherical guide tube 4 through the gradient annular guide tube 7. A feeding installation cylinder 9 is disposed above the desulfurization installation cylinder 8. The feeding installation cylinder 9 is connected to the desulfurization installation cylinder 8 through a material control valve 11. A cover plate 10 is rotatably disposed at the upper end of the feeding installation cylinder 9. A plurality of uniform air inlets 43 are vertically disposed at equal angles at the connection between the gradient annular guide tube 13 and the desulfurization installation cylinder 8. The uniform air inlets 43 gradually increase in size from top to bottom.

[0062] A discharge installation cylinder 14 is horizontally arranged below the desulfurization installation cylinder 8. The discharge installation cylinder 14 and the desulfurization installation cylinder 8 are connected by a connecting guide pipe 16. A discharge driving component 15 is provided at one end of the discharge installation cylinder 14, and a discharge conduit 17 is connected to the other end of the discharge installation cylinder 14. A drive shaft 44 extending into the discharge installation cylinder 14 is provided at one end of the discharge driving component 15, and a spiral guide plate 45 is provided on the drive shaft 44 inside the discharge installation cylinder 14.

[0063] The desulfurization catalyst is introduced into the feed installation cylinder 9 through the rotating cover plate 10. The desulfurization catalyst is introduced into the desulfurization installation cylinder 8 through the feed control valve 11 until the desulfurization installation cylinder 8 is filled. The high-temperature flue gas after denitrification is introduced into the gradient annular guide cylinder 13 through the gradient annular guide cylinder 7, and then into the desulfurization installation cylinder 8 through several uniform air inlet holes 43. It comes into contact with the desulfurization catalyst inside and reacts. It is then gradually guided upward into the exhaust duct 12. In this process, the continuous catalytic desulfurization reaction is completed, so that the flue gas discharged from the exhaust duct 12 has completed the desulfurization operation.

[0064] As the uniform air inlet 43 gradually increases in size from top to bottom, when the flue gas is introduced into the desulfurization installation cylinder 8 through the uniform air inlet 43, its contact time with the catalyst, its own flow rate and flow rate also gradually increase from top to bottom, forming a three-dimensional gradient desulfurization treatment effect, which significantly improves the efficiency and quality of desulfurization.

[0065] The discharge drive component 15 causes the drive shaft 44 and the spiral guide plate 45 on it to rotate at a certain speed, so that the desulfurization catalyst that has been reacted at the bottom is discharged from the discharge pipe 17 to the external recovery equipment, so that the desulfurization catalyst in the desulfurization installation cylinder 8 can move down at a uniform speed as a whole, ensuring the stability of the desulfurization process and avoiding the waste of desulfurization catalyst.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-temperature flue gas emission desulfurization and denitrification device, characterized in that, include: The denitrification mechanism includes a vacuum jacketed mounting cylinder. Spherical guide hoods are symmetrically arranged at the upper and lower ends of the vacuum jacketed mounting cylinder. An air inlet duct is connected to the middle of the upper spherical guide hood, and a spherical guide tube is connected to the middle of the lower spherical guide hood. A denitrification mounting plate is horizontally arranged inside the vacuum jacketed mounting cylinder. Several denitrification arc-shaped guide holes are arranged in an array on the denitrification mounting plate. All denitrification arc-shaped guide holes penetrate the denitrification mounting plate, and an annular mounting plate is arranged at the lower end of the denitrification arc-shaped guide holes. Combined denitrification modules are arranged in conjunction with the denitrification arc-shaped guide holes. The desulfurization mechanism includes a desulfurization installation cylinder, an exhaust pipe is connected to one side of the upper end of the desulfurization installation cylinder, and a gradient annular guide cylinder is provided on the outer side of the middle part of the desulfurization installation cylinder. The gradient annular guide cylinder and the spherical guide cylinder are connected through a relay guide pipe. The combined denitrification module includes a fixed mounting plate located below the annular mounting plate. The edge of the fixed mounting plate is provided with a limiting mounting ring. Several combined mounting holes are provided at equal angles on the limiting mounting ring. Fixed screw holes are provided on the lower side of the denitrification mounting plate directly opposite the combined mounting holes. Both the outer side of the vacuum jacket installation cylinder and the outer side of the desulfurization installation cylinder are provided with reinforcing mounting frames, and the outer ends of the reinforcing mounting frames are provided with fixed mounting frames, each with several fixed mounting holes.

2. The high-temperature flue gas emission desulfurization and denitrification device according to claim 1, characterized in that, The upper side of the fixed mounting plate is provided with a positioning mounting ring, and the lower side of the annular mounting plate is provided with an annular positioning groove to cooperate with the positioning mounting ring.

3. The high-temperature flue gas emission desulfurization and denitrification device according to claim 2, characterized in that, A denitrification guide tube is provided above the annular mounting plate. An annular buckle is provided at the lower end of the denitrification guide tube. An annular groove is provided on the upper side of the annular mounting plate to match the annular buckle. A spherical mounting cover is provided at the upper end of the denitrification guide tube. Several filter installation holes are provided at equal angles on the tube wall of the denitrification guide tube. An arc-shaped filter screen is provided on each filter installation hole.

4. The high-temperature flue gas emission desulfurization and denitrification device according to claim 3, characterized in that, A rotation limiting guide hole is vertically provided on the wall of the denitrification guide cylinder between adjacent filter installation holes. A limiting rotation guide plate is provided in conjunction with the rotation limiting guide hole. One side of the limiting rotation guide plate is movably connected to one side of the rotation limiting guide hole through a reset shaft. When the other side of the rotation limiting guide hole contacts the limiting rotation guide plate, it is limited. An elastic limiting arc panel is provided on the outside of the reset shaft.

5. A high-temperature flue gas emission desulfurization and denitrification device according to claim 4, characterized in that, A limiting guide tube is vertically installed through the middle of the fixed mounting plate. Several independent denitrification plates are installed at equal angles above the fixed mounting plate between the limiting guide tube and the denitrification guide tube. Each independent denitrification plate has a limiting guide mounting post at its lower end. A limiting guide mounting sleeve is installed on the upper side of the fixed mounting plate in conjunction with the limiting guide mounting post.

6. The high-temperature flue gas emission desulfurization and denitrification device according to claim 5, characterized in that, The independent denitrification plate has symmetrical oblique flow guide grooves on both sides.

7. The high-temperature flue gas emission desulfurization and denitrification device according to claim 1, characterized in that, A reverse blower is connected to one side of the spherical guide tube, and a dust filter is provided at the outer end of the reverse blower.

8. The high-temperature flue gas emission desulfurization and denitrification device according to claim 1, characterized in that, A feeding installation cylinder is provided above the desulfurization installation cylinder. The feeding installation cylinder and the desulfurization installation cylinder are connected by a material control valve. A cover plate is rotatably installed at the upper end of the feeding installation cylinder.

9. A high-temperature flue gas emission desulfurization and denitrification device according to claim 1, characterized in that, The gradient annular guide tube and the desulfurization installation tube are connected at equal angles with several uniform air inlets, which gradually increase in size from top to bottom.

10. A high-temperature flue gas emission desulfurization and denitrification device according to claim 9, characterized in that, A discharge installation cylinder is horizontally arranged below the desulfurization installation cylinder. The discharge installation cylinder and the desulfurization installation cylinder are connected by a connecting guide pipe. A discharge driving component is provided at one end of the discharge installation cylinder, and a discharge conduit is connected to the other end of the discharge installation cylinder. A drive shaft extending into the discharge installation cylinder is provided at one end of the discharge driving component, and a spiral guide plate is provided on the drive shaft inside the discharge installation cylinder.

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