Movable SNCR (selective non-catalytic reduction) denitration spray gun

Abstract

The utility model provides a movable SNCR denitration spray gun which comprises a gun barrel and a gun body communicated with the gun barrel, a plurality of fixing frames are arranged on the gun barrel, a sliding hole connected with the gun barrel in a sliding mode is formed in the middle of each fixing frame, a mounting plate is arranged in front of the spraying end of the gun barrel, and the gun body is connected with the gun barrel in a sliding mode. A spray gun hole in sliding connection with the gun barrel is formed in the position, corresponding to the spraying end of the gun barrel, of the mounting plate, a cover plate used for sealing the spray gun hole is hinged to the interior of the spray gun hole, a connecting piece is movably mounted at the end, close to the gun barrel, of the cover plate, and the other end of the connecting piece is movably mounted on the gun barrel. Due to the arrangement of the mounting plate, the cover plate, the spray gun hole and the connecting piece, long-time contact between highly corrosive substances and the gun barrel and the gun body is avoided, damage to the gun barrel and the gun body is reduced, and therefore the replacement frequency of the gun barrel and the gun body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of SNCR denitrification technology, and in particular to a mobile SNCR denitrification spray gun. Background Technology

[0002] SNCR, or Selective Non-Catalytic Reduction, refers to the process of reducing nitrogen oxides in flue gas to harmless nitrogen and water by injecting a reducing agent within a suitable "temperature window" for denitrification without the action of a catalyst. This technology generally uses in-furnace injection of ammonia, urea, or hydrocyanic acid as the reducing agent to reduce NOx. The denitrification spray gun is connected to liquid ammonia and compressed air. During the denitrification process, the SNCR denitrification spray gun is in a highly corrosive and high-temperature environment. Existing denitrification spray guns are usually fixed in the denitrification equipment. During and after the denitrification process, the spray gun is in a corrosive and high-temperature environment, which causes significant damage to the equipment and requires frequent replacement of the spray gun. Utility Model Content

[0003] The problem this invention aims to solve is the issue of spray guns being prone to corrosion and damage.

[0004] To address the aforementioned technical problems, this utility model provides a movable SNCR denitrification spray gun, comprising a barrel and a gun body communicating with the barrel. Multiple fixed frames are provided on the barrel, and a sliding hole, slidably connected to the barrel, is opened in the middle of each fixed frame. A mounting plate is provided in front of the spray end of the barrel, and a spray gun hole, slidably connected to the barrel, is opened on the mounting plate at a position corresponding to the spray end of the barrel. A cover plate for sealing the spray gun hole is hinged inside the spray gun hole. A connector is movably installed at one end of the cover plate near the barrel, and the other end of the connector is movably installed to the barrel. The fixed frames are fixedly installed to the mounting plate.

[0005] Preferably, one end of the gun body is connected to an air inlet pipe and a liquid inlet pipe, the air inlet pipe being connected to compressed air and the liquid inlet pipe being connected to liquid ammonia.

[0006] Preferably, one end of the mounting plate is vertically provided with a base, and the bottom of the fixing frame is mounted on the surface of the base by means of support legs.

[0007] Preferably, a base plate is provided on top of the plurality of fixed frames located near the gun barrel and close to the gun body, and an electric push rod is provided on top of the base plate, with a telescopic rod provided at the telescopic end of the electric push rod.

[0008] Preferably, the surface of the barrel is provided with a fixing shell, and the top of the fixing shell is installed with the telescopic rod.

[0009] Preferably, the connector is an "L"-shaped link, with one end of the connector hinged to the top of the barrel and the other end of the connector hinged to the cover plate.

[0010] Preferably, an atomizing nozzle is provided at the end of the gun barrel near the cover plate.

[0011] Preferably, a waste liquid collection box is provided at one end of the base near the mounting plate.

[0012] Preferably, the electric actuator drives the telescopic rod, causing the telescopic rod to move the gun barrel through the spray gun hole and to the front of the spray gun hole.

[0013] Preferably, the top of the cover plate is hinged to the top of the spray gun orifice.

[0014] Compared with the prior art, this utility model provides a mobile SNCR denitrification spray gun, which has the following beneficial effects:

[0015] 1. This utility model, by setting up an installation plate, a cover plate, a spray gun hole, and a connector, allows the gun barrel to move towards the spray gun hole. By hinged to the cover plate and the connector of the gun barrel, the cover plate is pushed to rotate, so that the gun barrel and the denitrification chamber are connected. The end of the gun barrel passes through the spray gun hole, and liquid ammonia is sprayed into the denitrification chamber from the end of the gun barrel. In this way, it is avoided that highly corrosive substances are in contact with the gun barrel and gun body for a long time, reducing damage to the gun barrel and gun body, thereby reducing the frequency of gun barrel and gun body replacement. By setting up an electric push rod and a telescopic rod, the telescopic end of the electric push rod drives the gun barrel to move, thereby effectively controlling the movement of the spray gun in the direction perpendicular to the cover plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main body of this utility model with the gun barrel extending out of the spray gun hole.

[0017] Figure 2 This is a schematic diagram of the main body of this utility model, showing the cover plate sealing the spray gun hole.

[0018] In the diagram: 1. Barrel; 2. Gun body; 3. Fixing frame; 4. Sliding hole; 5. Mounting plate; 6. Spray gun port; 7. Cover plate; 8. Connector; 9. Liquid inlet pipe; 10. Air inlet pipe; 11. Base; 12. Support leg; 13. Base plate; 14. Electric actuator; 15. Telescopic rod; 16. Fixing shell; 17. Atomizing nozzle; 18. Waste liquid collection box. Detailed Implementation

[0019] This utility model relates to a portable SNCR denitrification spray gun, such as Figure 1-2As shown, the gun includes a barrel 1 and a gun body 2 connected to the barrel 1. Multiple fixed frames 3 are provided on the barrel 1. A sliding hole 4, slidably connected to the barrel 1, is opened in the middle of the fixed frame 3. A mounting plate 5 is provided in front of the spray end of the barrel 1. A spray gun hole 6, slidably connected to the barrel 1, is opened on the mounting plate 5 at the corresponding position of the spray end of the barrel 1. A cover plate 7, for sealing the spray gun hole 6, is hinged inside the spray gun hole 6. A connector 8 is movably installed on one end of the cover plate 7 near the barrel 1, and the other end of the connector 8 is movably installed on the barrel 1. The fixed frames 3 and the mounting plate 5 are fixedly installed. The barrel 1 and gun body 2 are connected, and the gun body 2 is connected to compressed air and liquid ammonia. The interior of the barrel 1 is used to mix the two. By setting the fixed frames 3 and the sliding holes 4, the barrel 1 slides in the sliding holes 4, thus fixing the barrel 1 and the fixed frames 3, and simultaneously fixing the height and direction of the barrel 1. By setting the mounting plate 5, the gun body 1 is fixed. Mounting plate 5 is fixed to the side wall of the denitrification chamber, so that the denitrification spray gun is inside mounting plate 5. Spray gun hole 6 is provided, with the side of spray gun hole 6 away from gun barrel 1 being the denitrification chamber. Gun barrel 1 sprays liquid ammonia into the denitrification chamber through spray gun hole 6. Cover plate 7 is provided, and the end of gun barrel 1 pushes cover plate 7. By rotating cover plate 7, spray gun hole 6 is opened. At the same time, cover plate 7 closes spray gun hole 6 to prevent strong corrosive substances from contacting the spray gun, thereby reducing corrosion of gun barrel 1 and gun body 2 and improving the service life of the spray gun. Connector 8 is provided to make cover plate 7 and gun barrel 1 rotatably connected. Gun barrel 1 drives cover plate 7 to rotate outward of spray gun hole 6 to open spray gun hole 6. When the denitrification equipment is working, cover plate 7 is opened. When the denitrification equipment is not working, cover plate 7 is closed to avoid long-term contact between strong corrosive substances and gun barrel 1 and gun body 2, reducing damage to gun barrel 1 and gun body 2, thereby reducing the replacement frequency of gun barrel 1 and gun body 2.

[0020] In an embodiment of this utility model, one end of the gun body 2 is connected to an air inlet pipe 10 and a liquid inlet pipe 9. The air inlet pipe 10 is connected to compressed air, and the liquid inlet pipe 9 is connected to liquid ammonia. By setting the air inlet pipe 10 and the liquid inlet pipe 9, liquid ammonia and compressed air enter from the air inlet pipe 10 and the liquid inlet pipe 9, respectively.

[0021] In an embodiment of this utility model, a base 11 is vertically arranged at one end of the mounting plate 5, and the bottom of the fixing frame 3 is mounted on the surface of the base 11 via a support leg 12. By setting the base 11 and the support leg 12, and fixing the support leg 12 on the base 11, the fixing frame 3 and the base 11 are fixedly installed, thereby fixing the spray gun and the base 11.

[0022] In this embodiment of the utility model, a base plate 13 is provided on the top of a plurality of fixed frames 3 located near the gun body 2 on the barrel 1. An electric push rod 14 is provided on the top of the base plate 13. A telescopic rod 15 is provided at the output end of the electric push rod 14. By setting the base plate 13, the base plate 13 is installed on the top of the fixed frames 3. By setting the electric push rod 14 and the telescopic rod 15, the electric push rod is a high temperature resistant electric push rod. The telescopic end of the electric push rod 14 drives the telescopic rod 15 to move. The electric push rod 14 and the telescopic rod 15 are in a direction perpendicular to the spray gun hole 6.

[0023] In an embodiment of this utility model, a fixing shell 16 is provided on the surface of the barrel 1. The top of the fixing shell 16 is installed with the telescopic rod 15. By providing the fixing shell 16, the barrel 1 and the fixing shell 16 are fixedly installed. The barrel 1 is moved by the telescopic rod 15 driving the fixing shell 16.

[0024] In this embodiment of the utility model, the connecting member 8 is an "L"-shaped connecting rod. One end of the connecting member 8 is hinged to the top of the gun barrel 1, and the other end of the connecting member 8 is hinged to the cover plate 7. By setting the above structure, the gun barrel 1 drives the connecting member 8 to move, and the connecting member 8 drives the cover plate 7 to rotate.

[0025] In an embodiment of this utility model, an atomizing nozzle 17 is provided at one end of the gun barrel 1 near the cover plate 7. By providing the atomizing nozzle 17, the liquid ammonia is atomized, thereby increasing the reaction area of ​​the liquid ammonia.

[0026] In an embodiment of this utility model, a waste liquid collection box 18 is provided at one end of the base 11 near the mounting plate 5. By providing the waste liquid collection box 18, the liquid leaking downward from the gun barrel 1 falls into the waste liquid collection box 18.

[0027] In an embodiment of this utility model, the electric actuator 14 drives the telescopic rod 15, so that the telescopic rod 15 drives the gun barrel 1 through the spray gun hole 6 and moves it to the front of the spray gun hole 6. By setting the above structure, the electric actuator 14 drives the telescopic rod 15 to move, and the telescopic rod 15 drives the gun barrel 1 through the spray gun hole 6 and moves it to the front of the spray gun hole 6.

[0028] In this embodiment of the invention, the top of the cover plate 7 is hinged to the top of the spray gun hole 6. By setting the above structure, the cover plate 7 rotates upward toward the spray gun hole 6, increasing the space in front of the gun barrel and maximizing the spray range of liquid ammonia.

[0029] In use, firstly, the electric actuator 14 is activated. The telescopic end of the electric actuator 14 drives the telescopic rod 15 to move, which in turn drives the fixed housing 16 to move. The fixed housing 16 then drives the gun barrel 1 to move in the sliding hole 4 in the fixed frame 3. The end of the gun barrel 1 drives the connecting piece 8 to move. The gun barrel 1, through the connecting piece 8, drives the cover plate 7 to rotate upwards towards the spray gun hole 6. At the same time, the end of the gun barrel 1 moves to the front of the spray gun hole 6. Then, liquid ammonia and compressed air are respectively input into the liquid inlet pipe 9 and the air inlet pipe 10. The liquid ammonia and compressed air enter the gun body 2. The compressed air pushes the liquid ammonia to be sprayed out from the end of the gun barrel 1. Through the atomizing nozzle 17, the liquid ammonia becomes atomized liquid ammonia, which enters the denitrification chamber. The electric actuator 14 is activated, which drives the telescopic rod 15 to move in the opposite direction. This causes the gun barrel 1 to drive the cover plate 7 to rotate downwards through the connecting piece 8, thus sealing the spray gun hole 6. The leaking liquid from the end of the gun barrel 1 falls into the waste liquid collection box 18.

[0030] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A movable SNCR denitrification spray gun, comprising a gun barrel (1) and a gun body (2) connected to the gun barrel (1), characterized in that: The gun barrel (1) is provided with a plurality of fixed frames (3), a sliding hole (4) slidably connected to the gun barrel (1) is provided in the middle of the fixed frame (3), a mounting plate (5) is provided in front of the spray end of the gun barrel (1), a spray gun hole (6) slidably connected to the gun barrel (1) is provided at a position corresponding to the spray end of the gun barrel (1) on the mounting plate (5), a cover plate (7) for closing the spray gun hole (6) is hinged inside the spray gun hole (6), a connecting piece (8) is movably installed at one end of the cover plate (7) close to the gun barrel (1), and the other end of the connecting piece (8) is movably installed with the gun barrel (1), and the fixed frame (3) is fixedly installed with the mounting plate (5).

2. The movable SNCR denitrification spray gun according to claim 1, characterized in that: One end of the gun body (2) is connected to an air inlet pipe (9) and a liquid inlet pipe (10), the air inlet pipe (9) is connected to compressed air, and the liquid inlet pipe (10) is connected to liquid ammonia.

3. The movable SNCR denitrification spray gun according to claim 1, characterized in that: A base (11) is vertically arranged at one end of the mounting plate (5), and the bottom of the fixed frame (3) is mounted on the surface of the base (11) via legs (12).

4. The movable SNCR denitrification spray gun according to claim 1 is characterized in that: A bottom plate (13) is arranged on the top of the plurality of fixed frames (3) located near the gun barrel (1) and the gun body (2), an electric push rod (14) is arranged on the top of the bottom plate (13), and a telescopic rod (15) is arranged at the telescopic end of the electric push rod (14).

5. The movable SNCR denitrification spray gun according to claim 4 is characterized in that: A fixed shell (16) is provided on the surface of the gun barrel (1), and the top of the fixed shell (16) is mounted on the telescopic rod (15).

6. The movable SNCR denitrification spray gun according to claim 1, characterized in that: The connecting member (8) is an "L"-shaped connecting rod, one end of the connecting member (8) is hinged to the top of the gun barrel (1), and the other end of the connecting member (8) is hinged to the cover plate (7).

7. The movable SNCR denitrification spray gun according to claim 1, characterized in that: An atomizing nozzle (17) is arranged at one end of the gun barrel (1) close to the cover plate (7).

8. The movable SNCR denitrification spray gun according to claim 3 is characterized in that: A waste liquid collection box (18) is provided at one end of the base (11) close to the mounting plate (5).

9. The movable SNCR denitrification spray gun according to claim 4, characterized in that: The electric push rod (14) drives the telescopic rod (15) to drive the gun barrel (1) to move between the inside and outside of the spray gun hole (6).

10. The movable SNCR denitrification spray gun according to claim 1, characterized in that: The top of the cover plate (7) is hinged to the top of the spray gun hole (6).

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