Circulating spraying type wet oxidation denitration device

Abstract

The utility model discloses a circulating spray type wet oxidation denitration device which comprises a denitration cylinder, a gas inlet pipe arranged on one side of the denitration cylinder, an upper cover arranged at the upper end of the denitration cylinder, a gas outlet pipe arranged at the upper end of the upper cover, a circulating pump arranged on one side of the denitration cylinder, a liquid outlet pipe arranged at the upper end of the circulating pump, one end of the liquid outlet pipe entering the denitration cylinder, and the other end of the liquid outlet pipe entering the denitration cylinder. A diffusion device is arranged in the denitration cylinder and comprises a diffusion plate, a connecting pipe is fixedly arranged on the inner wall of the diffusion plate, one end of the connecting pipe is in threaded connection with the liquid outlet pipe, a plurality of diffusion holes are annularly formed in the outer wall of the diffusion plate, and a plurality of first liquid outlet holes are formed in the outer wall of the connecting pipe. The circulating spray type wet oxidation denitration device disclosed by the utility model can ensure that flue gas is in full contact with a denitration agent liquid, so that the flue gas is better denitrated.

Description

Technical Field

[0001] The utility model relates to the field of oxidation denitration, in particular to a circulating spray type wet oxidation denitration device. Background Art

[0002] Spray wet oxidation denitrification device is a commonly used flue gas denitrification technology, mainly used for the treatment of nitrogen oxides in industrial flue gas such as coal-fired boilers. The device sprays denitrification agent into the flue gas and converts NOx into nitrogen and water through chemical reactions, thereby achieving the purpose of reducing nitrogen oxide emissions.

[0003] Existing denitrification agents are sprayed into flue gas through a shower head. When the shower head sprays the flue gas, it cannot be fully mixed with the flue gas inside the denitrification cylinder, and the flue gas will be discharged to the outside without being completely denitrified. Utility Model Content

[0004] The main purpose of the utility model is to provide a circulating spray type wet oxidation denitration device, which can effectively solve the technical problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A circulating spraying wet oxidation denitrification device comprises a denitrification cylinder, an air inlet pipe is arranged on one side of the denitrification cylinder, an upper cover is arranged on the upper end of the denitrification cylinder, an air outlet pipe is arranged on the upper end of the upper cover, a circulating pump is arranged on one side of the denitrification cylinder, a liquid outlet pipe is arranged on the upper end of the circulating pump, one end of the liquid outlet pipe enters into the denitrification cylinder, a diffusion device is arranged inside the denitrification cylinder, the diffusion device comprises a diffusion plate, a connecting pipe is fixedly arranged on the inner wall of the diffusion plate, one end of the connecting pipe is threadedly connected to the liquid outlet pipe, a plurality of diffusion holes are annularly provided on the outer wall of the diffusion plate, and a plurality of first liquid outlet holes are provided on the outer wall of the connecting pipe.

[0007] As a further solution of the utility model, a scattering structure is provided at the upper end of the diffusion plate, and the scattering structure includes a motor. The output end of the motor is connected to a connecting plate through the diffusion plate, and a scattering plate is provided at the lower end of the connecting plate. A circular hole is provided inside the scattering plate, and a second liquid outlet hole is opened at the lower end of the diffusion plate.

[0008] As a further solution of the utility model, two screw rods are fixedly provided at the lower end of the connecting plate, and the output ends of the screw rods pass through the outer wall of the breaking up plate and are threadedly installed with knobs.

[0009] As a further solution of the utility model, a fixed block is provided on one side of the denitrification cylinder, a screw rod is provided on the internal thread of the fixed block, a sealing sleeve is provided on the inner wall of one side of the fixed block, and one end of the screw rod passes through the sealing sleeve and enters the lower end of the diffusion plate.

[0010] As a further solution of the utility model, a rectangular plate is provided at an upper end of one side of the screw rod, and an upper end of the rectangular plate is fitted with a lower end of the diffusion plate.

[0011] As a further solution of the utility model, a plurality of screws are arranged in a ring shape on the upper end of the upper cover, and nuts are arranged on the output ends of the screws passing through the outer wall of the denitrification cylinder.

[0012] The beneficial effects of the utility model are as follows:

[0013] By setting a diffusion device, when the denitrification liquid enters the denitrification tube, the liquid can be sprayed in an annular manner without dead angles, so that the flue gas that needs to be denitrified below can fully contact with the denitrification liquid during the rising process, increasing the contact area between the denitrification liquid and the flue gas and improving the denitrification effect;

[0014] By setting up a dispersion structure, when the flue gas enters the lower end of the dispersion plate, the motor rotates so that the water source on the upper end of the dispersion plate is thrown into the surrounding circle, thereby dispersing the flue gas. At the same time, it ensures that the liquid is in better contact with the dispersed flue gas, so that the denitrification effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a circulating spray type wet oxidation denitrification device of the utility model;

[0016] Figure 2 This is a cross-sectional view of a denitration barrel of a circulating spray type wet oxidation denitration device of the utility model;

[0017] Figure 3 This is a cross-sectional view of a diffusion plate of a circulating spray type wet oxidation denitration device of the utility model;

[0018] Figure 4 This is a disassembled structural diagram of the connecting plate and the breaking plate of a circulating spray type wet oxidation denitration device of the utility model;

[0019] Figure 5 This is a cross-sectional view of a fixed block of a circulating spray type wet oxidation denitration device of the utility model;

[0020] Figure 6 for Figure 5 Enlarged structural diagram of point A in the middle.

[0021] In the figure: 1. Denitrification cylinder; 2. Upper cover; 3. Circulation pump; 4. Liquid outlet pipe; 5. Diffusion device; 6. Diffusion plate; 7. Connecting pipe; 8. First liquid outlet hole; 9. Diffusion hole; 10. Breaking-up structure; 11. Motor; 12. Connecting plate; 13. Breaking-up plate; 14. Second liquid outlet hole; 15. Screw; 16. Knob; 17. Fixing block; 18. Screw; 19. Sealing sleeve. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-6 As shown, a circulating spraying wet oxidation denitration device comprises a denitration cylinder 1, an air inlet pipe is arranged on one side of the denitration cylinder 1, an upper cover 2 is arranged on the upper end of the denitration cylinder 1, an air outlet pipe is arranged on the upper end of the upper cover 2, a circulating pump 3 is arranged on one side of the denitration cylinder 1, a liquid outlet pipe 4 is arranged on the upper end of the circulating pump 3, one end of the liquid outlet pipe 4 enters into the denitration cylinder 1, a diffusion device 5 is arranged inside the denitration cylinder 1, the diffusion device 5 comprises a diffusion plate 6, a connecting pipe 7 is fixedly arranged on the inner wall of the diffusion plate 6, one end of the connecting pipe 7 is threadedly connected to the liquid outlet pipe 4, a plurality of diffusion holes 9 are annularly provided on the outer wall of the diffusion plate 6, and a plurality of first liquid outlet holes 8 are provided on the outer wall of the connecting pipe 7.

[0024] In this embodiment, a scattering structure 10 is provided at the upper end of the diffusion plate 6, and the scattering structure 10 includes a motor 11. The output end of the motor 11 is connected to a connecting plate 12 through the diffusion plate 6, and a scattering plate 13 is provided at the lower end of the connecting plate 12. A circular hole is provided inside the scattering plate 13, and a second liquid outlet 14 is opened at the lower end of the diffusion plate 6.

[0025] The motor 11 is used to install the connecting plate 12, which is connected to the scattering plate 13. The circular hole facilitates the denitrification liquid on the upper end of the scattering plate 13 to enter the inside of the scattering plate 13 to better scatter the denitrification liquid. The second liquid outlet 14 facilitates the denitrification liquid discharged from the connecting pipe 7 to flow down.

[0026] In this embodiment, two screw rods 15 are fixedly provided at the lower end of the connecting plate 12 , and the output end of the screw rod 15 passes through the outer wall of the breaking plate 13 and is threadedly mounted with a knob 16 .

[0027] The screw rod 15 cooperates with the knob 16 to realize the installation connection between the breaking plate 13 and the connecting plate 12 .

[0028] In this embodiment, a fixing block 17 is provided on one side of the denitrification cylinder 1, a screw rod 18 is provided on the internal thread of the fixing block 17, a sealing sleeve 19 is provided on the inner wall of one side of the fixing block 17, and one end of the screw rod 18 passes through the sealing sleeve 19 and enters the lower end of the diffusion plate 6.

[0029] The screw rod 18 is used to support one side of the lower end of the diffusion plate 6 , and the sealing sleeve 19 ensures the sealing of one end of the outer wall of the screw rod 18 .

[0030] In this embodiment, a rectangular plate is provided at the upper end of one side of the screw rod 18 , and the upper end of the rectangular plate is in contact with the lower end of the diffusion plate 6 .

[0031] The rectangular plate can ensure that the upper end of one end of the screw rod 18 is firmly fitted with the lower end of the diffuser plate 6 , thereby better supporting the diffuser plate 6 .

[0032] In this embodiment, a plurality of screws are provided in a ring shape on the upper end of the upper cover 2 , and nuts are provided at the output ends of the screws passing through the outer wall of the denitration cylinder 1 .

[0033] It should be noted that the utility model is a circulating spray type wet oxidation denitration device. When in use, the circulating pump 3 is started so that the denitration liquid enters the liquid outlet pipe 4 and then enters the inside of the connecting pipe 7. The denitration liquid is discharged from the first liquid outlet hole 8 and accumulates inside the diffusion plate 6. The liquid is spread in a ring around through the diffusion hole 9 to denitrate the flue gas rising from the lower end.

[0034] Start the motor 11, so that the motor 11 drives the connecting plate 12 to rotate, and a small amount of liquid in the diffusion plate 6 will flow down through the second liquid outlet 14, and then enter the upper end or inner wall of the scattering plate 13. While rotating at a high speed, the liquid diffuses to the surroundings, diffuses the gas, and at the same time more fully contacts with the denitrification agent liquid, further improving the denitrification effect.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A circulating spray type wet oxidation denitration device, comprising a denitration cylinder (1), an air inlet pipe is arranged on one side of the denitration cylinder (1), an upper cover (2) is arranged on the upper end of the denitration cylinder (1), an air outlet pipe is arranged on the upper end of the upper cover (2), a circulating pump (3) is arranged on one side of the denitration cylinder (1), a liquid outlet pipe (4) is arranged on the upper end of the circulating pump (3), one end of the liquid outlet pipe (4) enters the interior of the denitration cylinder (1), characterized in that: The denitration cylinder (1) is provided with a diffusion device (5) inside, the diffusion device (5) comprises a diffusion plate (6), a connecting pipe (7) is fixedly provided on the inner wall of the diffusion plate (6), one end of the connecting pipe (7) is threadedly connected to the liquid outlet pipe (4), a plurality of diffusion holes (9) are provided in an annular shape on the outer wall of the diffusion plate (6), and a plurality of first liquid outlet holes (8) are provided on the outer wall of the connecting pipe (7).

2. A circulating spray type wet oxidation denitration device according to claim 1, characterized in that: The upper end of the diffusion plate (6) is provided with a scattering structure (10), the scattering structure (10) comprises a motor (11), the output end of the motor (11) passes through the diffusion plate (6) and is connected to a connecting plate (12), a scattering plate (13) is provided at the lower end of the connecting plate (12), a circular hole is provided inside the scattering plate (13), and a second liquid outlet hole (14) is provided at the lower end of the diffusion plate (6).

3. A circulating spray type wet oxidation denitration device according to claim 2, characterized in that: Two screw rods (15) are fixedly arranged at the lower end of the connecting plate (12), and the output end of the screw rod (15) passes through the outer wall of the scattering plate (13) and is threadedly mounted with a knob (16).

4. A circulating spray type wet oxidation denitration device according to claim 1, characterized in that: A fixing block (17) is provided on one side of the denitration cylinder (1), a screw rod (18) is provided on the internal thread of the fixing block (17), a sealing sleeve (19) is provided on the inner wall of one side of the fixing block (17), and one end of the screw rod (18) passes through the sealing sleeve (19) and enters the lower end of the diffusion plate (6).

5. A circulating spray type wet oxidation denitration device according to claim 4, characterized in that: A rectangular plate is provided at the upper end of one side of the screw rod (18), and the upper end of the rectangular plate is in contact with the lower end of the diffusion plate (6).

6. A circulating spray type wet oxidation denitration device according to claim 1, characterized in that: A plurality of screws are provided in a ring shape at the upper end of the upper cover (2), and nuts are provided at the output ends of the screws that pass through the outer wall of the denitration cylinder (1).

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