Flue gas denitration device

Abstract

The utility model discloses a flue gas denitration device, which relates to the technical field of flue gas denitration and comprises a treatment tank, a liquid storage tank and a liquid collecting cover, the liquid collecting cover is fixedly mounted in the treatment tank, a plurality of liquid spraying pipes are arranged at the bottom of the liquid storage cover, vent holes are formed between two liquid spraying pipes in a row of liquid spraying pipes, and the liquid storage tank is fixedly mounted on the treatment tank; the interior of the liquid storage tank is divided into two cavities for containing a denitration ammonia water solution and water through a partition plate, the liquid collection cover is fixedly connected with a first liquid guide pipe and a second liquid guide pipe, and the first liquid guide pipe and the second liquid guide pipe both penetrate through the treatment tank and extend into the two cavities of the liquid storage tank correspondingly; the technical problems that the interior of an existing flue gas denitration device is inconvenient to clean, the denitration efficiency is affected for a long time, smoke and an ammonia water solution are not prone to being in full contact, the reaction speed is low, and the purification effect is poor are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas denitration, in particular to a flue gas denitration device. Background Art

[0002] Flue gas is one of the main emissions from thermal power plants. It is produced by the combustion of combustibles in the burner. Since flue gas usually contains a large amount of nitrogen oxides NOx and NO, these nitrogen oxides will cause highly corrosive acid rain if they are directly discharged into the atmosphere. Therefore, the flue gas must undergo denitrification treatment before discharge.

[0003] However, after the existing flue gas denitrification equipment is finished working, it is not convenient to clean its interior. Over time, there are many debris inside the device, which reduces the working efficiency of the device. It is also difficult for the flue gas to fully contact with the ammonia solution, the reaction speed is slow, and the purification effect is poor. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a flue gas denitrification device, which solves the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a flue gas denitrification device, including a treatment tank, a liquid storage box, and a liquid collecting cover; the liquid collecting cover is fixedly installed in the treatment tank, a plurality of liquid spray pipes are arranged at the bottom of the liquid storage cover, and a vent is provided between two of the liquid spray pipes in a row of the liquid spray pipes, the liquid storage tank is fixedly installed on the treatment tank, and the inside of the liquid storage tank is divided into two chambers for containing ammonia solution and water for denitrification by a partition plate, a first liquid guide pipe and a second liquid guide pipe are fixedly connected to the liquid collecting cover, the first liquid guide pipe and the second liquid guide pipe both penetrate the treatment tank and extend to the two chambers of the liquid storage tank respectively, and a water pump is arranged on the first liquid guide pipe and the second liquid guide pipe.

[0006] Preferably, a plurality of flow partitions are fixedly installed in the processing tank, and the flow partitions are arranged between each column of the liquid spraying pipes and each column of the ventilation holes.

[0007] Preferably, a driving gear is rotatably installed at the bottom of the processing tank, and two pairs of mutually meshing driven gears are rotatably installed at the bottom of the processing tank, one of the two pairs of driven gears is meshed with the driving gear, and a main stirring rod is fixedly connected to the driving gear and several driven gears, and several auxiliary stirring rods are fixedly installed on the main stirring rod.

[0008] Preferably, a motor for driving the driving gear to rotate is fixedly installed at the bottom of the processing tank.

[0009] Preferably, a filter box is fixedly mounted on the processing tank, a filter plate is detachably mounted in the filter box, a box door is provided on the filter box, the box door is fixedly connected to the filter plate, and a handle is fixedly mounted on the box door.

[0010] Preferably, an air inlet pipe and an exhaust pipe are fixedly provided on the filter box.

[0011] Preferably, a sewage pipe is fixedly connected to the bottom of the treatment tank.

[0012] Preferably, an exhaust pipe is fixedly connected to the top of the processing tank.

[0013] Beneficial Effects

[0014] The utility model provides a flue gas denitrification device, which has the following beneficial effects:

[0015] 1. A liquid storage tank is installed, and the two chambers of the liquid storage tank are used to contain water and ammonia solution respectively. By opening a vent hole, the gas treated by the ammonia solution can be released into the cavity above the treatment tank through the vent hole. By installing a water pump, the water and the ammonia solution in the liquid storage tank can be pumped into the first liquid guide pipe and the second liquid guide pipe. By installing the first liquid guide pipe, the ammonia solution in the liquid storage tank can enter the liquid collecting cover. By installing the spray pipe, the ammonia solution in the liquid collecting cover can be sprayed into the treatment tank so that it can be fully contacted with the gas. Similarly, by installing the second liquid guide pipe, the water in the liquid storage tank can enter the liquid collecting cover, and the ammonia solution in the liquid collecting cover can be sprayed into the treatment tank through the spray pipe. The inside of the cooling tank can be flushed to avoid affecting the working efficiency of the device after long-term use.

[0016] 2. By installing a driving gear, the driving gear rotates, and the driving gear is meshed with the driven gear to drive one of the two pairs of driven gears to rotate, and the driven gears are meshed to drive the other of the two pairs of driven gears to rotate. The rotation of the driving gear and the driven gear can drive the main stirring rod to rotate, thereby driving the auxiliary stirring rod to rotate, so that the gas can fully contact with the ammonia solution and accelerate the reaction speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 2 This is a top view of the liquid collecting hood after the processing tank is cross-sectioned.

[0019] In the figure: 1. treatment tank; 2. liquid collecting cover; 3. liquid storage tank; 4. first liquid guide pipe; 5. second liquid guide pipe; 6. liquid spray pipe; 7. water pump; 8. flow partition; 9. driving gear; 10. driven gear; 11. main stirring rod; 12. auxiliary stirring rod; 13. filter box; 14. filter plate; 15. handle; 16. air inlet pipe; 17. exhaust pipe; 18. exhaust pipe; 19. sewage pipe; 20. motor; 21. vent. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention, wherein the directional nouns such as "upper", "lower", etc. mentioned in this document are as follows: Figure 1 The orientation is used as a reference.

[0021] See also Figure 1 -, the utility model provides a technical solution: a flue gas denitrification device, including a treatment tank 1, a liquid storage box 3, and a liquid collecting cover 2; the liquid collecting cover 2 is fixedly installed in the treatment tank 1, and a plurality of liquid spray pipes 6 are arranged at the bottom of the liquid storage cover, and a vent 21 is opened between two liquid spray pipes 6 in a row of liquid spray pipes 6, the liquid storage box 3 is fixedly installed on the treatment tank 1, and the inside of the liquid storage box 3 is divided into two chambers for containing ammonia solution and water for denitrification by a partition plate, and a first liquid guide pipe 4 and a second liquid guide pipe 5 are fixedly connected to the liquid collecting cover 2, and the first liquid guide pipe 4 and the second liquid guide pipe 5 both penetrate the treatment tank 1 and extend to the two chambers of the liquid storage box 3 respectively, and a water pump 7 is arranged on the first liquid guide pipe 4 and the second liquid guide pipe 5.

[0022] In this embodiment, a liquid storage tank 3 is installed, and the two chambers of the liquid storage tank 3 are used to contain water and ammonia solution respectively. By opening an air vent 21, the gas treated with the ammonia solution can be released into the cavity above the treatment tank 1 through the air vent 21. By installing a water pump 7, the water and the ammonia solution in the liquid storage tank 3 can be pumped into the first liquid guide pipe 4 and the second liquid guide pipe 5. By installing the first liquid guide pipe 4, the ammonia solution in the liquid storage tank 3 can enter the liquid collecting cover 2. By installing the spray pipe 6, the ammonia solution in the liquid collecting cover 2 can be sprayed into the treatment tank 1 so that it is fully in contact with the gas. Similarly, by installing the second liquid guide pipe 5, the water in the liquid storage tank 3 can enter the liquid collecting cover 2, and the ammonia solution in the liquid collecting cover 2 can be sprayed into the treatment tank 1 through the spray pipe 6. The inside of the treatment tank 1 can be flushed to avoid affecting the working efficiency of the device after long-term use.

[0023] As an embodiment of the utility model, a plurality of flow partitions 8 are fixedly arranged in the processing tank 1 , and the flow partitions 8 are arranged between each column of liquid spraying pipes 6 and each column of vent holes 21 .

[0024] In this embodiment, by installing a flow isolation plate 8, the gas entering the treatment tank 1 can be isolated, so that the gas can fully contact with the ammonia solution, thereby enhancing the denitrification effect.

[0025] As an embodiment of the utility model, a driving gear 9 is rotatably installed at the bottom of the processing tank 1, and two pairs of mutually meshing driven gears 10 are rotatably installed at the bottom of the processing tank 1. One of the two pairs of driven gears 10 is meshed with the driving gear 9, and a main stirring rod 11 is fixedly connected to the driving gear 9 and the driven gears 10, and a plurality of auxiliary stirring rods 12 are fixedly installed on the main stirring rod 11.

[0026] In this embodiment, a driving gear 9 is installed, and the driving gear 9 rotates. The driving gear 9 is meshed with the driven gear 10, which can drive one of the two pairs of driven gears 10 to rotate. The meshing of the driven gears 10 can drive the other driven gear 10 of the two pairs of driven gears 10 to rotate. The rotation of the driving gear 9 and the driven gear 10 can drive the main stirring rod 11 to rotate, and then drive the auxiliary stirring rod 12 to rotate, so that the gas can fully contact with the ammonia solution and accelerate the reaction speed.

[0027] As an embodiment of the present utility model, a motor 20 for driving the driving gear 9 to rotate is fixedly installed at the bottom of the processing tank 1 .

[0028] In this embodiment, the motor 20 is installed to drive the driving gear 9 to rotate.

[0029] As an embodiment of the utility model, a filter box 13 is fixedly installed on the processing tank 1, and a filter plate 14 is removably installed in the filter box 13. The filter box 13 is provided with a box door, which is fixedly connected to the filter plate 14, and a handle 15 is fixedly installed on the box door.

[0030] In this embodiment, by installing a filter plate 14, the flue gas can be filtered to filter out other impurities in the flue gas, so that the filtered gas can better react with the ammonia solution to improve the denitrification effect. By providing a box door and a handle 15, the box door can be opened by pulling the handle 15 so that the filter plate 14 can be taken out to facilitate cleaning of the filter plate 14.

[0031] As an embodiment of the utility model, an air intake pipe 16 and an exhaust pipe 17 are fixedly provided on the filter box 13 .

[0032] In this embodiment, an air inlet pipe 16 is provided so that the smoke can enter the filter box 13 through the air inlet pipe 16 , and an impurity exhaust pipe 17 is provided so that impurities generated after the smoke is filtered can be discharged through the impurity exhaust pipe 17 .

[0033] As an embodiment of the present utility model, a sewage pipe 19 is fixedly connected to the bottom of the processing tank 1 .

[0034] In this embodiment, by installing a sewage pipe 19 , impurities after denitration treatment can be discharged through the sewage pipe 19 .

[0035] As an embodiment of the present utility model, an exhaust pipe 18 is fixedly connected to the top of the processing tank 1 .

[0036] In this embodiment, the exhaust pipe 18 is installed so that the gas after the denitration treatment can be discharged through the exhaust pipe 18 .

[0037] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0038] The working principle and use process of the utility model are as follows: when in use, the smoke is passed into the filter box 13 through the air inlet pipe 16, and after the smoke is filtered through the filter plate 14, the impurities can be discharged through the impurity discharge pipe 17, and the filtered gas enters the processing tank 1, and the water pump 7 on the first liquid guide pipe 4 is started, and the ammonia solution in the liquid storage tank 3 can be pumped out and transported to the liquid collecting cover 2 through the first liquid guide pipe 4, and then the ammonia solution is sprayed into the processing tank 1 through the liquid spray pipe 6, and the motor 20 is started to drive the driving gear 9 to rotate, thereby driving the driven gear 10 to rotate, This in turn drives the main stirring rod 11 and the auxiliary stirring rod 12 to rotate together, so that the gas can fully react with the ammonia solution, thereby accelerating the reaction rate of the gas and the ammonia solution. The treated gas can then enter the cavity above the treatment tank 1 through the vent 21, and the treated gas can be discharged through the exhaust pipe 18. The water pump 7 on the second liquid guide pipe 5 is started, and water can be transferred to the liquid collecting cover 2 through the second liquid guide pipe 5. The water is sprayed out through the liquid spray pipe 6, and the inside of the treatment tank 1 can be cleaned. The cleaned impurities can be discharged through the sewage pipe 19.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas denitrification device, comprising a treatment tank (1), characterized in that: It also comprises a liquid storage tank (3) and a liquid collecting cover (2); the liquid collecting cover (2) is fixedly installed in the treatment tank (1); a plurality of liquid spraying pipes (6) are arranged at the bottom of the liquid collecting cover (2); a vent hole (21) is provided between two liquid spraying pipes (6) in a row of the liquid spraying pipes (6); the liquid storage tank (3) is fixedly installed on the treatment tank (1); the interior of the liquid storage tank (3) is divided into two chambers for containing ammonia solution and water for denitrification by a partition plate; a first liquid guide pipe (4) and a second liquid guide pipe (5) are fixedly connected to the liquid collecting cover (2); the first liquid guide pipe (4) and the second liquid guide pipe (5) both penetrate the treatment tank (1) and extend to the two chambers of the liquid storage tank (3) respectively; and a water pump (7) is arranged on the first liquid guide pipe (4) and the second liquid guide pipe (5).

2. A flue gas denitration device according to claim 1, characterized in that: A plurality of flow partitions (8) are fixedly arranged in the processing tank (1), and the flow partitions (8) are arranged between each row of the liquid spraying pipes (6) and each row of the ventilation holes (21).

3. A flue gas denitrification device according to claim 1, characterized in that: A driving gear (9) is rotatably mounted on the bottom of the processing tank (1), and two pairs of mutually meshing driven gears (10) are rotatably mounted on the bottom of the processing tank (1), one of the two pairs of driven gears (10) is meshed with the driving gear (9), a main stirring rod (11) is fixedly connected to the driving gear (9) and a plurality of the driven gears (10), and a plurality of auxiliary stirring rods (12) are fixedly mounted on the main stirring rod (11).

4. A flue gas denitration device according to claim 3, characterized in that: A motor (20) for driving the driving gear (9) to rotate is fixedly mounted on the bottom of the processing tank (1).

5. A flue gas denitration device according to claim 1, characterized in that: A filter box (13) is fixedly mounted on the treatment tank (1), a filter plate (14) is detachably mounted in the filter box (13), a box door is provided on the filter box (13), the box door is fixedly connected to the filter plate (14), and a handle (15) is fixedly mounted on the box door.

6. A flue gas denitration device according to claim 5, characterized in that: An air intake pipe (16) and an impurity discharge pipe (17) are fixedly arranged on the filter box (13).

7. A flue gas denitration device according to claim 1, characterized in that: A sewage discharge pipe (19) is fixedly connected to the bottom of the treatment tank (1).

8. The flue gas denitration device according to claim 1, characterized in that: An exhaust pipe (18) is fixedly connected to the top of the processing tank (1).

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