Pyrolysis device for solid particle denitration agent

Abstract

The invention relates to the technical field of denitration equipment, in particular to a solid particle denitration agent pyrolysis device.The solid particle denitration agent pyrolysis device comprises a longitudinal plate, a barrel, a hemispheroid, an air inlet assembly, a discharging pipe and an air outlet pipe, the top of the barrel is connected with the bottom of the hemispheroid, and the longitudinal plate penetrates through the barrel and the hemispheroid from top to bottom; the longitudinal plate divides the cylinder and the hemisphere into a gas production chamber and a gas inlet chamber, a balance hole is formed in the end, away from the hemisphere, of the longitudinal plate to communicate the gas production chamber with the discharging chamber, the discharging pipe and the gas outlet pipe are oppositely arranged on the hemisphere at intervals, the discharging pipe communicates with the discharging chamber, the gas outlet pipe communicates with the gas production chamber, and the gas inlet assembly is arranged at the bottom of the cylinder. The output end of the gas inlet assembly is connected with the gas production chamber and the discharging chamber so as to output gas. According to the solid particle denitration agent pyrolysis device provided by the invention, the start-up time is shortened by measuring the temperatures of a plurality of combustion layers, the labor cost is reduced, and the operation stability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of denitrification equipment, and in particular to a solid particle denitrification agent pyrolysis device. Background Art

[0002] During the use of the boiler, flue gas will be generated during combustion. There are carbon oxides in the flue gas. Will it cause air pollution and affect environmental safety if it is discharged into the air?

[0003] A urea pyrolysis furnace is proposed in the related art, which consists of a hot air inlet guide device section, a first gradient section, a stable section, a second gradient section (from top to bottom), a pyrolysis furnace body and outlet components. However, the contact time between the denitrification agent and the hot air cannot be effectively extended, resulting in insufficient heat exchange and lower-than-expected ammonia generation, which affects the overall denitrification efficiency. Summary of the Invention

[0004] The present application provides a solid particle denitrification agent pyrolysis device, which can improve heat exchange efficiency and thus improve denitrification efficiency.

[0005] The solid particle denitrification agent pyrolysis device of the embodiment of the present application includes: a longitudinal plate, an air inlet assembly, a cylinder, a hemisphere, a discharge pipe and an air outlet pipe, the top of the cylinder is connected to the bottom of the hemisphere, the longitudinal plate passes through the cylinder and the hemisphere from top to bottom, the longitudinal plate separates the cylinder and the hemisphere into a gas production chamber and an air inlet chamber, and the end of the longitudinal plate away from the hemisphere is provided with a balancing hole to connect the gas production chamber and the discharge chamber, the discharge pipe and the air outlet pipe are arranged relatively spaced apart on the hemisphere, and the discharge pipe is connected to the discharge chamber, the air outlet pipe is connected to the gas production chamber, the air inlet assembly is arranged at the bottom of the cylinder, and the output end of the air inlet assembly is respectively connected to the gas production chamber and the discharge chamber to output gas.

[0006] The present application provides a solid particle denitrification agent pyrolysis device, which shortens the start-up time, reduces labor costs and improves operation stability by measuring the temperature of multiple combustion layers.

[0007] In some embodiments, the air intake assembly includes a horizontal plate, a hood, and an air supply component.

[0008] The horizontal plate is arranged between the balancing hole and the bottom of the cylinder, and the extension direction of the horizontal plate is orthogonal to the extension direction of the longitudinal plate to separate the side of the gas production chamber close to the bottom of the cylinder into a left air inlet chamber, and the side of the discharge chamber close to the bottom of the cylinder into a right air chamber.

[0009] The corresponding transverse plates of the unloading chamber and the gas production chamber are both provided with hoods, and the hoods are used to connect the unloading chamber with the left air chamber, and connect the gas production chamber with the right air chamber.

[0010] And the air supply component is communicated with the left air chamber and the right air chamber respectively.

[0011] In some embodiments, the hood includes a hood body and a connecting tube, the connecting tube is arranged on a horizontal plate, the top of the connecting tube is provided with a hood body, the top of the hood body is provided with a first hole and multiple second holes are arranged circumferentially on the hood body, and the outlet of the connecting tube is connected to the first hole and the second hole.

[0012] In some embodiments, the number of the hoods is 20 to 30 per m 2 .

[0013] In some embodiments, the radial dimension of the balancing hole is 80 mm to 150 mm, the distance between the balancing hole and the horizontal plate is A, and 0 <A≤0.5m。

[0014] In some embodiments, the first hole and the second hole have the same radial size, and the radial size of the first hole is 3 mm to 5 mm.

[0015] In some embodiments, the air supply component includes a pressure monitoring component, a first adjusting component, a second adjusting component and an air supply component. The monitoring ends of the pressure monitoring component are respectively arranged in the unloading chamber and the gas production chamber. The output end of the air supply component is respectively connected to one end of the first adjusting component and one end of the second adjusting component. The other end of the first adjusting component is connected to the left air chamber, and the other end of the second adjusting component is connected to the right air chamber.

[0016] In some embodiments, the air pressure of the material discharge chamber is greater than the air pressure of the gas production chamber, and the difference between the air pressure of the material discharge chamber and the air pressure of the gas production chamber is 0.5 kPa to 1.2 kPa.

[0017] In some embodiments, there is an angle B between the axis of the feed pipe and the axis of the cylinder, and 60°≤B≤75°

[0018] In some embodiments, a baffle is further included in the gas production chamber, wherein the baffle is connected to the longitudinal plate and is disposed at one end of the longitudinal plate close to the gas outlet pipe, and a through hole is provided on the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A schematic cross-sectional view of a solid particle denitrification agent pyrolysis device provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of a balancing hole provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of a solid particle denitrification agent pyrolysis device is provided for an embodiment of the present application;

[0023] Figure 4 A schematic diagram of a horizontal plate provided in an embodiment of the present application;

[0024] Figure 5 Schematic diagram of the left and right air chambers provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of a hood provided in an embodiment of the present application.

[0026] The above drawings include the following reference numerals:

[0027] Feeding pipe 1, air outlet pipe 2, cylinder 3, gas production chamber 31, feeding chamber 32, longitudinal plate 4, balancing hole 41, air intake assembly 5, transverse plate 51, wind cap 52, connecting tube 521, cap body 522, first hole 523, second hole 524, left air chamber 53, right air chamber 54, baffle 6, through hole 61, hemisphere 7. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application. The terms "mounted", "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 an indirect connection through an intermediate medium, or it can be internal communication between two elements. The terms "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, where the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism may be, for example, within 5°; "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity may also be, for example, within 5°. "Equal" includes both absolute equality and approximate equality, where the acceptable deviation range for approximate equality may be, for example, that the difference between the two is less than or equal to 5% of either. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] The solid particle denitrification agent pyrolysis device of the embodiment of the present application includes: a longitudinal plate, a cylinder, a hemisphere 7, a discharge pipe and an air outlet pipe. The top of the cylinder is connected to the bottom of the hemisphere 7. The longitudinal plate 4 penetrates the cylinder and the hemisphere 7 from top to bottom. The longitudinal plate separates the cylinder and the hemisphere 7 into a gas production chamber and an air intake chamber, and a balancing hole is provided at one end of the longitudinal plate 4 away from the hemisphere 7 to connect the gas production chamber and the discharge chamber. The discharge pipe and the air outlet pipe are arranged relatively spaced apart on the hemisphere 7, and the discharge pipe is connected to the discharge chamber, and the air outlet pipe is connected to the gas production chamber. The air intake assembly is arranged at the bottom of the cylinder, and the output ends of the air intake assembly are respectively connected to the gas production chamber and the discharge chamber to output gas.

[0032] Specifically, if Figures 1 to 6As shown, the longitudinal plate 4 extends in the up-down direction, the cylinder 3 extends in the up-down direction, the longitudinal plate 4 is arranged in the cylinder 3 to separate the cylinder 3 into a material discharge chamber 32 and a gas production chamber 31, and the longitudinal plate 4 separates the cylinder 3 and the hemispherical body 7 into a gas production chamber 31 and an air inlet chamber.

[0033] The feed pipe 1 and the gas outlet pipe 2 are arranged on both sides of the cylinder 3 in the radial direction. The feed chamber 32 is connected to the feed pipe 1 to receive the denitrification agent and corresponding other materials output by the feed pipe 1. The gas outlet pipe 2 is connected to the gas production chamber 31 to output the gas after the denitrification reaction to the gas production chamber 31. At the same time, the bottom of the feed chamber 32 and the gas production chamber 31 are both provided with output ends of the air intake assembly 5 to output the gas upward. There is a pressure difference between the feed chamber 32 and the gas production chamber 31, so that the material in the feed chamber 32 can be output to the gas production chamber 31 through the balance hole 41.

[0034] The air inlet assembly 5 outputs gas upward to fully mix the denitrifier falling in the discharge chamber 32 and the gas production chamber 31 in a countercurrent manner. The fluidized air output by the air supply assembly penetrates the denitrifier particles accumulated at the bottom of the discharge chamber 32, breaks them up and initially fluidizes them. The particles are suspended under the action of the airflow and move with the airflow. They are fully mixed with the hot air in the pyrolysis device for heat exchange. Due to the continuous supply of fluidized air to the gas production chamber 31, and the pressure in the gas production chamber 31 is slightly lower than that in the discharge chamber 32, the denitrifier particles enter the gas production chamber 31 continuously and controllably through the balance hole 41 driven by the pressure difference. The size of the balance hole 41 works in synergy with the pressure difference to ensure that the particle conveying rate matches the discharge rate, avoiding accumulation of material in the discharge chamber 32 or overloading of the gas production chamber 31.

[0035] The solid particle denitrification device of the embodiment of the present application is configured such that the air intake assembly 5 is arranged at the bottom of the cylinder 3, and the gas output by the air intake assembly 5 is output from bottom to top, thereby breaking up and fluidizing the falling denitrification agent, and the particles are suspended under the action of the airflow and move with the airflow. The particles are fully mixed with the hot air in the pyrolysis device for heat exchange, thereby extending the contact time between the denitrification agent and the hot air, improving the heat exchange efficiency, and thus improving the denitrification efficiency. By providing a balancing hole 41, and there being an air pressure difference between the gas production chamber 31 and the discharge chamber 32, the air pressure difference causes the denitrification agent particles in the discharge chamber 32 to continuously enter the gas production chamber 31 through the balancing hole 41 under the pressure difference drive, and then the denitrification agent entering is broken up and fluidized again by the air intake assembly 5 in the gas production chamber 31, and the particles are suspended under the action of the airflow and move with the airflow, thereby improving the heat exchange and denitrification effects.

[0036] In some embodiments, the air intake assembly 5 includes a horizontal plate 51, a hood 52 and an air supply component.

[0037] The horizontal plate 51 is arranged between the balancing hole 41 and the bottom of the cylinder 3. The extension direction of the horizontal plate 51 is orthogonal to the extension direction of the vertical plate 4 to separate the side of the gas production chamber 31 close to the bottom of the cylinder 3 into a left air chamber 53, and the side of the discharge chamber 32 close to the bottom of the cylinder 3 is divided into a right air chamber 54. The corresponding horizontal plates 51 of the discharge chamber 32 and the gas production chamber 31 are both provided with wind hoods 52. The wind hoods 52 are used to connect the discharge chamber 32 with the right air chamber 54, and connect the gas production chamber 31 with the left air chamber 53, and the air supply components are respectively connected to the left air chamber 53 and the right air chamber 54.

[0038] Specifically, if Figures 1 to 6 As shown, the horizontal plate 51 is arranged at one end of the vertical plate 4 near the bottom of the cylinder 3, and the horizontal plate 51 and the bottom of the cylinder 3 have a preset distance to form a left air chamber 53 and a right air chamber 54. The horizontal plate 51 in the discharge chamber 32 and the horizontal plate 51 in the gas production chamber 31 are both provided with wind caps 52, so that the air intake component 5 can be output to the discharge chamber 32 and the gas production chamber 31 through the wind caps 52, and the output ends of the air supply components are respectively connected to the left air chamber 53 and the right air chamber 54 to output gases of different pressures, so that there is a pressure difference in the discharge chamber 32 and the gas production chamber 31.

[0039] Furthermore, the gas supply component can output gas at different pressures to meet the different gas pressure requirements of the discharge chamber 32 and the gas production chamber 31. By adjusting the pressure regulating device of the gas supply component, the gas pressure output to the left air chamber 53 and the right air chamber 54 can be controlled, thereby achieving pressure differential control within the discharge chamber 32 and the gas production chamber 31. By controlling the pressure differential, the flow rate and distribution of the material within the discharge chamber 32 and the gas production chamber 31 can be adjusted, thereby improving the denitrification reaction efficiency.

[0040] The solid particle denitrification agent pyrolysis device of the embodiment of the present application is provided with a hood 52 to ensure uniform gas discharge from the air intake assembly 5 and to avoid blockage by accumulated materials as much as possible, thereby improving the stability and safety of denitrification.

[0041] In some embodiments, the hood 52 includes a cap body 522 and a connecting tube 521. The connecting tube 521 is arranged on the horizontal plate 51. The cap body 522 is provided on the top of the connecting tube 521. The top of the cap body 522 is provided with a first hole 523 and multiple second holes 524 are arranged circumferentially of the cap body 522. The outlet of the connecting tube 521 is connected to the first hole 523 and the second hole 524.

[0042] Specifically, if Figures 1 to 6 As shown, the first hole 523 is set at the top of the cap body 522, and the second hole 524 is set on the circumference of the cap body 522 to avoid the second hole 524 being blocked and causing the hood 52 to be unable to discharge air normally.

[0043] The first hole 523 at the center of the part is not easily blocked by materials. Since the materials mainly deposit around and below the wind cap 52 under the action of gravity, the top center is relatively empty, and the gas can smoothly pass through the first hole 523 and be discharged, reducing the problem of poor air outlet caused by blockage. The second holes 524 are evenly distributed in the circumferential direction of the cap body 522. These circumferentially distributed second holes 524 can expand the gas discharge range, enabling the gas to more widely exchange substances and energy with the surrounding environment. In a fluidized bed reactor, the setting of the second holes 524 helps to achieve uniform fluidization of the materials in the bed layer, improving the uniformity and efficiency of the reaction.

[0044] The air inlet assembly 5 outputs gas into the connecting cylinder 521 through the left air chamber 53 or the right air chamber 54, and then the connecting cylinder 521 outputs the gas through the first hole 523 and the second hole 524 of the cap body 522 to the gas production chamber 31 and the blanking chamber 32. By controlling the pressure difference between the left air chamber 53 and the right air chamber 54, the pressure difference between the gas production chamber 31 and the blanking chamber 32 can be controlled, thereby enabling the materials, i.e., the denitration agent, to be stably output into the gas production chamber 31.

[0045] Furthermore, the number of wind caps 52 is 200 2 ~300 per square meter 2 , to form a stable fluidized bed layer. When there are 200 wind caps 52 per square meter 2 , a denitration agent with a relatively small solid particle size can be used. For example, a denitration agent with a particle size of 0.5 mm. When there are 300 wind caps 52 per square meter 2 , a denitration agent with a relatively large solid particle size can be used. For example, a denitration agent with a particle size of 2.0 mm. For a denitration agent with a particle size of 1.5 mm, the wind caps 52 can be arranged in a way of 250 per square meter 2 .

[0046] Furthermore, the radial dimension of the balance hole 41 is 80 mm to 150 mm, and the distance between the balance hole 41 and the cross plate 51 is A, and 0 < A ≤ 0.5 m. The radial dimension of the balance hole 41 is to adjust the pressure difference between the blanking chamber 32 and the gas production chamber 31. The size of the radial dimension directly affects the gas passing ability and the pressure difference adjustment effect. When the radial dimension of the balance hole 41 is 150 mm, a relatively large gas flow area can be provided, which is beneficial to quickly balance the pressure difference and improve the heat exchange efficiency, but it will lead to a decrease in the sensitivity of the pressure difference adjustment. When the radial dimension of the balance hole 41 is 80 mm, the sensitivity of the pressure difference adjustment can be improved, but the gas flow capacity is relatively weak, and the denitration and heat exchange efficiency are relatively low.

[0047] Different sizes of balance holes 41 can be adopted according to different denitration agent types or air supply requirements to improve the applicability of the pyrolysis device.

[0048] In some embodiments, the radial dimensions of the first hole 523 and the second hole 524 are the same, and the radial dimension of the first hole 523 is 3 mm to 5 mm. In a fluidized bed reactor, a certain gas flow rate is required to maintain the fluidized state of the material. If the aperture is too small, the gas flow rate is insufficient and the material cannot be fully fluidized. If the aperture is too large, the gas flow rate is too large, which may cause the material to be blown out of the reactor, affecting the reaction. The radial dimensions of 3 mm, 4 mm, and 5 mm can meet the gas flow requirements of the fluidized bed reactor. And by setting the size of the first hole 523 or the second hole 524, it can be avoided that the first hole 523 and the second hole 524 are too large or too small to affect the denitrification efficiency.

[0049] In some embodiments, the air supply component includes a pressure monitoring component, a first adjusting component, a second adjusting component and an air supply component. The monitoring ends of the pressure monitoring component are respectively arranged in the unloading chamber 32 and the gas production chamber 31. The output end of the air supply component is respectively connected to one end of the first adjusting component and one end of the second adjusting component. The other end of the first adjusting component is connected to the left air chamber 53, and the other end of the second adjusting component is connected to the right air chamber 54.

[0050] Specifically, if Figures 1 to 6 As shown, a pressure monitoring component is provided in the unloading chamber 32 to monitor the pressure in the unloading chamber 32. The monitoring end of the pressure monitoring component can also be provided in the gas production chamber 31 to monitor the pressure in the gas production chamber 31. The first regulating component and the second regulating component adjust the gas flow rate by changing their own openings. For example, the first regulating component and the second regulating component can be butterfly valves or existing flow regulating valves. The pressure difference between the unloading chamber 32 and the gas production chamber 31 is then adjusted by adjusting the pressure and flow of the gas output.

[0051] Furthermore, the air pressure of the unloading chamber 32 is greater than the air pressure of the gas production chamber 31, and the difference between the air pressure of the unloading chamber 32 and the air pressure of the gas production chamber 31 is 0.5kPa to 1.2kPa. Different materials have different requirements for the pressure difference. In actual applications, the pressure difference can be adjusted by adjusting the output pressure of the gas supply component, the opening of the first regulating component and the second regulating component and other parameters according to the characteristics of the material. For example, for materials that are prone to agglomeration, the gas flow rate can be appropriately increased to prevent material blockage. Alternatively, when the production scale is expanded, it is necessary to increase the reaction gas pressure chamber, the output pressure of the gas supply component can be increased, and the gas flow rate can be increased to increase the amount of denitrification. At the same time, the size of the balance hole 41 and the pressure difference work together to ensure that the particle conveying rate matches the unloading rate, avoiding material accumulation in the unloading chamber 32 or overloading of the gas production chamber 31.

[0052] In some embodiments, there is an angle B between the axis of the feed pipe 1 and the axis of the cylinder 3, and 60°≤B≤75°, so as to ensure that the denitrification agent flows by gravity, avoid bridging, and improve the stability and safety of denitrification.

[0053] In some embodiments, a baffle 6 is further included in the gas production chamber 31 . The baffle 6 is connected to the longitudinal plate 4 and is disposed at one end of the longitudinal plate 4 close to the gas outlet pipe 2 . A through hole 61 is provided on the baffle 6 .

[0054] The gas in the gas production chamber 31 enters the area below the baffle 6 and enclosed by the hemisphere 7 through the through hole 61, and is then output through the outlet pipe 2. The baffle 6 can allow a portion of the denitrified material to fall again to perform heat exchange and denitrification, thereby improving the heat exchange efficiency and denitrification efficiency. The above is a detailed introduction to the method provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A solid particle denitrification agent pyrolysis device, characterized in that: include: A longitudinal plate (4), a cylinder (3) and a hemispherical body (7), wherein the top of the cylinder (3) is connected to the bottom of the hemispherical body (7), the longitudinal plate (4) passes through the cylinder (3) and the hemispherical body (7) from top to bottom, the longitudinal plate (4) separates the cylinder (3) and the hemispherical body (7) into a gas production chamber (31) and an air inlet chamber, and a balancing hole (41) is provided at one end of the longitudinal plate (4) away from the hemispherical body (7) to connect the gas production chamber (31) and the discharge chamber (32); A feed pipe (1) and an air outlet pipe (2), wherein the feed pipe (1) and the air outlet pipe (2) are arranged on the hemisphere (7) at intervals relative to each other, and the feed pipe (1) is communicated with the feed chamber (32), and the air outlet pipe (2) is communicated with the gas production chamber (31); An air intake assembly (5) is provided at the bottom of the cylinder (3), and an output end of the air intake assembly (5) is respectively connected to the gas production chamber (31) and the discharge chamber (32) to output gas.

2. The solid particle denitrification agent pyrolysis device according to claim 1, characterized in that: The air intake assembly (5) includes a transverse plate (51), a hood (52) and an air supply component. The transverse plate (51) is arranged between the balancing hole (41) and the bottom of the cylinder (3), and the extension direction of the transverse plate (51) is orthogonal to the extension direction of the longitudinal plate (4) so as to separate the side of the gas production chamber (31) close to the bottom of the cylinder (3) into a left air chamber (53), and the side of the discharge chamber (32) close to the bottom of the cylinder (3) into a right air chamber (54). The corresponding transverse plates (51) of the unloading chamber (32) and the gas production chamber (31) are both provided with wind caps (52), and the wind caps (52) are used to connect the unloading chamber (32) with the right wind chamber (54), and connect the gas production chamber (31) with the left wind chamber (53). The air supply component is communicated with the left air chamber (53) and the right air chamber (54) respectively.

3. The solid particle denitrification agent pyrolysis device according to claim 2, characterized in that: The hood (52) comprises a hood body (522) and a connecting tube (521), wherein the connecting tube (521) is arranged on the transverse plate (51), the hood body (522) is arranged on the top of the connecting tube (521), the hood body (522) is provided with a first hole (523) on the top of the hood body (522), and a plurality of second holes (524) are arranged circumferentially on the hood body (522), and the outlet of the connecting tube (521) is connected to the first hole (523) and the second hole (524).

4. The solid particle denitrification agent pyrolysis device according to claim 3, characterized in that: The number of the wind caps (52) is 20 to 30 per m 2 .

5. The solid particle denitrification agent pyrolysis device according to claim 3, characterized in that: The radial dimension of the balancing hole (41) is 80 mm to 150 mm, the distance between the balancing hole (41) and the transverse plate (51) is A, and 0 <A≤0.5m。 6. The solid particle denitrification agent pyrolysis device according to claim 3, characterized in that: The radial dimensions of the first hole (523) and the second hole (524) are the same, and the radial dimension of the first hole (523) is 3 mm to 5 mm.

7. The solid particle denitrification agent pyrolysis device according to claim 1, characterized in that: The air supply component includes a pressure monitoring component, a first regulating component, a second regulating component and an air supply component, wherein the output end of the air supply component is respectively connected to one end of the first regulating component and one end of the second regulating component, the other end of the first regulating component is connected to the left air chamber (53), and the other end of the second regulating component is connected to the right air chamber (54).

8. The solid particle denitrification agent pyrolysis device according to claim 7, characterized in that: The air pressure of the material discharge chamber (32) is greater than the air pressure of the gas production chamber (31), and the difference between the air pressure of the material discharge chamber (32) and the air pressure of the gas production chamber (31) is 0.5 kPa to 1.2 kPa.

9. The solid particle denitrification agent pyrolysis device according to any one of claims 1 to 8, characterized in that: There is an included angle B between the axis of the feed pipe (1) and the axis of the cylinder (3), and 60°≤B≤75° 10. The solid particle denitrification agent pyrolysis device according to claim 1, characterized in that: The invention also includes a baffle (6) arranged in the gas production chamber (31), the baffle (6) being connected to the longitudinal plate (4), and the baffle (6) being arranged at one end of the longitudinal plate (4) close to the gas outlet pipe (2), and the baffle (6) being provided with a through hole (61).

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