Multi-unit denitration equipment

Abstract

The utility model relates to the technical field of denitration equipment, and discloses multi-unit denitration equipment which comprises a base and a plurality of denitration tanks, the denitration tanks are assembled on the base, an exhaust pipe and an air inlet pipe are arranged on the denitration tanks in a communicated mode, a sleeve is arranged on the denitration tanks in a penetrating mode, the sleeve is rotatably connected with the denitration tanks, and the air inlet pipe is connected with the air inlet pipe. A plurality of connecting rods are arranged on the sleeve in a penetrating mode, the connecting rods are rotationally connected with the sleeve, the ends, located outside the sleeve, of the connecting rods are fixedly connected with stirring plates, and a liquid pumping device is installed on the base. According to the multi-unit denitration equipment provided by the utility model, air in the denitration tank can be fully stirred, the temperature difference is reduced, the temperature uniformity during denitration operation is improved, flue gas and a denitration agent in the denitration tank are stirred and mixed in different directions, the consistency and sufficiency of denitration quality are ensured, and the denitration efficiency is improved. Therefore, the denitration efficiency can be improved, and the content of nitrogen oxides can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of denitration equipment, in particular to a multi-unit denitration equipment. Background Art

[0002] Denitrification equipment is used to remove nitrogen oxides from flue gas, including nitrogen monoxide and nitrogen dioxide, which are one of the main gaseous pollutants produced during the combustion process. The exhaust gas emitted by combustion equipment such as coal-fired power plants, industrial boilers, and power plants usually contains a large amount of nitrogen oxides.

[0003] The denitrification process of a multi-unit denitrification equipment generally includes flue gas mixing, high-temperature reaction, nitrogen oxide conversion, etc. During the flue gas mixing, ammonia water or urea needs to be injected into the flue gas to undergo a catalytic reduction reaction with nitrogen oxides. The multi-unit denitrification equipment in the prior art is provided with a spraying system at the internal flue gas circulation position to spray ammonia water or urea into the flue gas, but the spraying range of the nozzle is limited, and the flue gas and the denitrification agent are not fully mixed, thereby reducing the denitrification efficiency. Secondly, during the high-temperature reaction process, due to the upward flow of the internal flue gas, there may be a temperature difference between the inner wall of the denitrification equipment and the position close to the center of the denitrification equipment, which may affect the reduction reaction of the flue gas, thereby affecting the denitrification quality of the flue gas and the air quality.

[0004] Therefore, it is necessary to design a multi-unit denitrification equipment to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a multi-unit denitration device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A multi-unit denitrification device comprises a base and a plurality of denitrification tanks, wherein the denitrification tank is mounted on the base, an exhaust pipe and an intake pipe are connected to the denitrification tank, a sleeve is passed through the denitrification tank, the sleeve is rotatably connected to the denitrification tank, a plurality of connecting rods are passed through the sleeve, and the connecting rods are rotatably connected to the sleeve, an end of the connecting rod located outside the sleeve is fixedly connected to a stirring plate, a pumping device is installed on the base, a liquid outlet pipe of the pumping device is connected to each sleeve, a bracket is fixedly connected to the denitrification tank, a driving assembly for driving the stirring plate to rotate is provided on the bracket, a connecting assembly is also provided inside each of the denitrification tanks, and the pumping device is connected to the driving assembly via the connecting assembly.

[0008] As a preferred technical solution of the utility model, the driving assembly includes a motor, a worm and a plurality of worm wheels, the motor is fixedly mounted on the bracket, the worm is located inside the sleeve, and the worm and the sleeve are coaxially arranged, the output shaft end of the motor is axially connected to the worm, each of the worm wheels is fixedly sleeved on each connecting rod, and the worm wheel is meshed with the worm;

[0009] The driving assembly also includes a connecting piece, which is connected to the worm and is used to drive the sleeve to rotate.

[0010] As a preferred technical solution of the utility model, the connecting part includes gear one, gear two, a rotating shaft and a transmission part. The gear one is fixedly sleeved on the sleeve, one end of the rotating shaft is rotatably connected to the top of the denitrification tank, and the other end of the rotating shaft is rotatably connected to the inner top of the bracket. The gear two is fixedly sleeved on the rotating shaft, the gear one is meshed with the gear two, and the transmission ratio between the gear two and the gear one is less than one, and the rotating shaft is connected to the worm gear through the transmission part.

[0011] As a preferred technical solution of the utility model, the connecting component includes a rotary joint 1, a connecting pipe, several rotary joints 2, and several nozzles. The rotary joint 1 is installed on one end of the sleeve located outside the denitrification tank, the connecting pipe is connected to the rotary joint 1, and the connecting pipe is located inside the sleeve, the liquid outlet pipe of the pumping device is connected to the rotary joint 1, the connecting rod and the interior of the stirring plate are jointly provided with a connecting cavity, the rotary joint 2 is installed on one end of the connecting rod located inside the sleeve, and several of the connecting cavities are respectively connected to the connecting pipe through several rotary joints 2, and the nozzle is arranged on the stirring plate, and the nozzle is connected to the connecting cavity.

[0012] As a preferred technical solution of the utility model, a plurality of stirring plates are staggered.

[0013] As a preferred technical solution of the utility model, the plurality of nozzles are respectively located on both sides of the stirring plate, and each nozzle is arranged at equal intervals.

[0014] The utility model has the following beneficial effects:

[0015] 1. Improved temperature uniformity: Through the horizontal and vertical rotation of the stirring plate, the air inside the denitrification tank is fully stirred, reducing the temperature difference, improving the temperature uniformity during the denitrification operation, and facilitating the stability and efficiency of the denitrification process;

[0016] 2. Denitrification quality assurance: Through the movement of the stirring plate, the flue gas and denitrification agent inside the denitrification tank are stirred and mixed in different directions to ensure the consistency and adequacy of the denitrification quality, which helps to improve the denitrification efficiency, reduce the content of nitrogen oxides, ensure the quality of denitrification, and meet environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a multi-unit denitrification device proposed by the utility model;

[0018] Figure 2 for Figure 1 A magnified view of the local structure;

[0019] Figure 3 is a schematic diagram of the structure of the connecting piece;

[0020] Figure 4 It is a schematic diagram of the longitudinal cross-sectional structure of the sleeve;

[0021] Figure 5 It is a schematic diagram of the transverse cross-sectional structure of the sleeve.

[0022] In the figure: 1 base, 2 denitrification tank, 3 exhaust pipe, 4 intake pipe, 5 pumping device, 6 bracket, 7 motor, 8 sleeve, 9 worm, 10 gear 1, 11 gear 2, 12 shaft, 13 transmission part, 14 rotary joint 1, 15 stirring plate, 16 connecting pipe, 17 worm gear, 18 rotary joint 2, 19 connecting rod, 20 connecting chamber, 21 nozzle. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-5A multi-unit denitration device includes a base 1 and a plurality of denitration tanks 2. The denitration tanks 2 are mounted on the base 1. The denitration tanks 2 are connected with an exhaust pipe 3 and an intake pipe 4. The denitration tanks 2 are penetrated with a sleeve 8. The sleeve 8 is rotatably connected to the denitration tank 2. The sleeve 8 is penetrated with a plurality of connecting rods 19. The connecting rods 19 are rotatably connected to the sleeve 8. The connecting rods 19 and the sleeve 8 are sealed to prevent untreated flue gas from being discharged from the connection between the connecting rods 19 and the sleeve 8 to the outside to cause air pollution. One end 19 located outside the sleeve 8 is fixedly connected with a stirring plate 15, and the stirring plate 15 can make the air inside the denitrification tank 2 flow, reduce the internal temperature difference, and ensure the adequacy of denitrification. A pumping device 5 is installed on the base 1, and the liquid outlet pipe of the pumping device 5 is connected to each sleeve 8. A bracket 6 is fixedly connected to the denitrification tank 2, and a driving component for driving the stirring plate 15 to rotate is provided on the bracket 6. A connecting component is also provided inside each denitrification tank 2, and the pumping device 5 is connected to the driving component through the connecting component.

[0025] Reference Figure 2 and Figure 4 The driving assembly includes a motor 7, a worm 9 and a plurality of worm wheels 17. The motor 7 is fixedly assembled on the bracket 6. The worm 9 is located inside the sleeve 8, and the worm 9 is coaxially arranged with the sleeve 8. The end of the output shaft of the motor 7 is axially connected with the worm 9. Each worm wheel 17 is fixedly sleeved on each connecting rod 19, and the worm wheel 17 is meshed with the worm 9. The stirring plate 15 will rotate in the vertical direction under the action of the worm 9, so that the denitrification agent and the flue gas can be fully mixed to ensure the quality of denitrification. The driving assembly also includes a connecting piece, which is connected to the worm 9 and is used to drive the sleeve 8 to rotate.

[0026] Reference Figure 3 and Figure 5 The connecting member includes a gear 10, a gear 2 11, a rotating shaft 12 and a transmission member 13. The gear 10 is fixedly sleeved on the sleeve 8. One end of the rotating shaft 12 is rotatably connected to the top of the denitrification tank 2. The other end of the rotating shaft 12 is rotatably connected to the inner top of the bracket 6. The gear 2 11 is fixedly sleeved on the rotating shaft 12. The gear 10 is meshed with the gear 2 11, and the transmission ratio between the gear 2 11 and the gear 10 is less than one. Figure 5It should be noted that when the transmission ratio between gear 10 and gear 2 11 is equal to 1, the rotation speeds of the sleeve 8, the worm wheel 17 and the worm 9 are the same, and the meshing positions of the worm 9 and the worm wheel 17 do not change. Only when the sleeve 8 is decelerated by using gear 10 and gear 2 11, the worm 9 will drive the worm wheel 17 to rotate, thereby making the stirring plate 15 rotate in the horizontal direction and in the vertical direction at the same time, increasing the stirring range of the stirring plate 15. The rotating shaft 12 is connected to the worm 9 through the transmission member 13. It is worth mentioning that the transmission member 13 adopts a chain transmission mode. Specifically, the transmission member 13 may include two synchronous wheels and a synchronous belt. The synchronous belt is sleeved on two synchronous wheels, and the two synchronous wheels are fixedly sleeved on the rotating shaft 12 and the worm 9 respectively, so as to realize the transmission between the rotating shaft 12 and the worm 9. It should be understood that the transmission member 13 adopts synchronous wheels and synchronous belts for transmission is not the only implementation method. In some other embodiments, the transmission member 13 can also adopt sprockets and chains for transmission. The transmission mode of the sprocket and the chain is similar to the transmission mode of the synchronous wheel and the synchronous belt, which will not be described here. The utility model does not elaborate on the transmission mode of the transmission member 13 one by one. Under the premise of not departing from the basic concept of the utility model, the transmission mode of the transmission member 13 can be flexibly changed, which should be regarded as within the protection scope defined by the utility model.

[0027] Reference Figure 1-5 The connecting assembly includes a rotary joint 14, a connecting pipe 16, a plurality of rotary joints 18, and a plurality of nozzles 21. The rotary joint 14 is installed at one end of the sleeve 8 located outside the denitrification tank 2. The connecting pipe 16 is connected to the rotary joint 14, and the connecting pipe 16 is located inside the sleeve 8. Under the action of the rotary joint 14, when the sleeve 8 rotates and drives the connecting pipe 16 to rotate, the connecting pipe 16 can always be connected to the liquid outlet pipe of the pumping device 5. The liquid outlet pipe of the pumping device 5 is connected to the rotary joint 14. The connecting rod 19 and the inside of the stirring plate 15 are jointly provided with The connecting chamber 20 and the rotary joint 18 are installed at one end of the connecting rod 19 located inside the sleeve 8. A plurality of connecting chambers 20 are respectively connected with the connecting pipe 16 through a plurality of rotary joints 18. Under the action of the rotary joint 18, when the connecting rod 19 rotates, the connecting chamber 20 can always be connected with the connecting pipe 16 to ensure the normal circulation of the denitrification agent. The nozzle 21 is arranged on the stirring plate 15. The nozzle 21 is connected with the connecting chamber 20. The denitrification agent can be sprayed from the rotating stirring plate 15, thereby increasing the spraying range of the denitrification agent and ensuring the full mixing of the denitrification agent and the flue gas.

[0028] Reference Figure 1 A plurality of stirring plates 15 are staggered, which, on the one hand, increases the stirring range of the stirring plates 15 in the vertical direction to ensure sufficient mixing of the flue gas and the denitrification agent, and on the other hand, ensures the meshing between the worm wheel 17 and the worm 9 to ensure the stability of the device structure.

[0029] Reference Figure 1 A plurality of nozzles 21 are respectively located on both sides of the stirring plate 15, and each nozzle 21 is arranged at equal intervals, further increasing the spraying range of the denitrification agent and ensuring the adequacy of the reaction between the flue gas and the denitrification agent.

[0030] The specific working principle of the utility model is as follows:

[0031] During the denitration operation, flue gas is discharged into the denitration tank 2 through the air intake pipe 4, and the motor 7 is started. The output shaft of the motor 7 rotates to drive the worm 9 to rotate. Under the transmission action of the transmission member 13, the worm 9 drives the rotating shaft 12 to rotate. Subsequently, the sleeve 8 rotates under the transmission action of the gear 2 11 and the gear 1 10. The rotation of the sleeve 8 drives the connecting rod 19 and the stirring plate 15 to rotate in the horizontal direction around the axis of the sleeve 8. It is worth noting that at this time, the worm 9 also rotates under the action of the motor 7. The transmission ratio between the gear 2 11 and the gear 1 10 must be less than one. This is because when the transmission ratio between the gear 10 and the gear 2 11 is equal to one, the sleeve 8, The rotation speeds of the worm 9 and the worm wheel 17 are the same, and the positional relationship of the three is relatively static. At this time, the worm 9 does not generate an action force on the worm wheel 17. Only when the speed of the worm 9 is greater than the rotation speed of the sleeve 8, the worm 9 will generate an action force on the worm wheel 17, causing the worm wheel 17 to rotate, thereby driving the connecting rod 19 and the stirring plate 15 to rotate. Through the above process, the stirring plate 15 will rotate in the horizontal direction with the sleeve 8, and will also rotate in the vertical direction under the action of the worm 9, so that the stirring plate 15 can stir the air inside the denitration tank 2, reduce the temperature difference in the denitration tank 2, and ensure the consistency and sufficiency of the denitration quality;

[0032] When the motor 7 is started, the pumping device 5 is started at the same time. The pumping device 5 consists of a liquid pump and a denitrification agent storage box. The liquid pump pumps the denitrification agent into the interior of the connecting pipe 16, and then into the connecting cavity 20, and finally sprays it out through a plurality of nozzles 21. Since the stirring plate 15 rotates in both the horizontal and vertical directions at this time, the position of the nozzle 21 also changes accordingly, which increases the spraying range of the denitrification agent, enables the flue gas to fully mix and react with the denitrification agent, improves the denitrification efficiency, and ensures the denitrification quality at the same time.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-unit denitration device, comprising a base (1) and a plurality of denitration tanks (2), wherein the denitration tanks (2) are mounted on the base (1), and an exhaust pipe (3) and an intake pipe (4) are connected to the denitration tanks (2), characterized in that: The denitration tank (2) is provided with a sleeve (8) extending therethrough, the sleeve (8) being rotatably connected to the denitration tank (2), a plurality of connecting rods (19) extending therethrough, the connecting rods (19) being rotatably connected to the sleeve (8), one end of the connecting rod (19) located outside the sleeve (8) being fixedly connected to a stirring plate (15), a pumping device (5) being installed on the base (1), a liquid outlet pipe of the pumping device (5) being connected to each sleeve (8), a bracket (6) being fixedly connected to the denitration tank (2), a driving component for driving the stirring plate (15) to rotate being provided on the bracket (6), each of the denitration tanks (2) being further provided with a connecting component inside, the pumping device (5) being connected to the driving component via the connecting component.

2. A multi-unit denitration equipment according to claim 1, characterized in that: The driving assembly comprises a motor (7), a worm (9) and a plurality of worm wheels (17); the motor (7) is fixedly mounted on a bracket (6); the worm (9) is located inside a sleeve (8), and the worm (9) and the sleeve (8) are coaxially arranged; the output shaft end of the motor (7) is axially connected to the worm (9); each of the worm wheels (17) is fixedly sleeved on each connecting rod (19), and the worm wheel (17) is meshed with the worm (9); The driving assembly further comprises a connecting member, which is connected to the worm (9) and is used to drive the sleeve (8) to rotate.

3. A multi-unit denitration equipment according to claim 2, characterized in that: The connecting member comprises a gear 1 (10), a gear 2 (11), a rotating shaft (12) and a transmission member (13); the gear 1 (10) is fixedly sleeved on the sleeve (8); one end of the rotating shaft (12) is rotatably connected to the top of the denitration tank (2); the other end of the rotating shaft (12) is rotatably connected to the inner top of the bracket (6); the gear 2 (11) is fixedly sleeved on the rotating shaft (12); the gear 1 (10) and the gear 2 (11) are meshed with each other, and the transmission ratio between the gear 2 (11) and the gear 1 (10) is less than one; the rotating shaft (12) is transmission-connected to the worm (9) via the transmission member (13).

4. A multi-unit denitration equipment according to claim 3, characterized in that: The connecting component comprises a rotary joint (14), a connecting pipe (16), a plurality of rotary joints (18), and a plurality of nozzles (21). The rotary joint (14) is installed at one end of the sleeve (8) located outside the denitration tank (2). The connecting pipe (16) is connected to the rotary joint (14), and the connecting pipe (16) is located inside the sleeve (8). The liquid outlet pipe of the pumping device (5) is connected to the rotary joint (14). The connecting rod (19) and the stirring plate (15) are provided with a connecting cavity (20). The rotary joint (18) is installed at one end of the connecting rod (19) located inside the sleeve (8). The plurality of connecting cavities (20) are respectively connected to the connecting pipe (16) through the plurality of rotary joints (18). The nozzle (21) is arranged on the stirring plate (15), and the nozzle (21) is connected to the connecting cavity (20).

5. A multi-unit denitration device according to claim 4, characterized in that: A plurality of stirring plates (15) are arranged in a staggered manner.

6. A multi-unit denitration equipment according to claim 4, characterized in that: The plurality of nozzles (21) are respectively located on both sides of the stirring plate (15), and each nozzle (21) is arranged at equal intervals.

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