Ammonia desulfurization tower capable of efficiently absorbing and conveniently removing impurities

Abstract

The utility model discloses an efficient absorption convenient impurity removal ammonia process desulfurization tower, which comprises a desulfurization tower main body, the bottom of the desulfurization tower main body is provided with a sediment box, one side of the desulfurization tower main body is provided with an impurity storage box, the impurity storage box is communicated with the sediment box, the desulfurization tower main body is provided with a circulating cooling mechanism, and the circulating cooling mechanism is communicated with the sediment box. A spraying and filtering mechanism is arranged in the desulfurizing tower main body and is connected with a circulating cooling mechanism, a gas inlet pipe is arranged on the side wall of the desulfurizing tower main body, a gas collecting hood is arranged at the top of the desulfurizing tower main body, and an exhaust pipe is arranged at the upper end of the gas collecting hood; the circulating cooling mechanism comprises a liquid conveying pipe, a circulating pump, a radiator, a fixing plate, a rotating shaft and a spiral conveying plate, and the spraying filtering mechanism comprises a guide plate, an expansion plate, a spraying head, a baffle and a filtering adsorption block. The utility model belongs to the technical field of flue gas desulfurization, and particularly relates to an ammonia desulfurization tower capable of efficiently absorbing and conveniently removing impurities.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas desulfurization, and specifically refers to an ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning. Background Art

[0002] Ammonia desulfurization is a treatment method for absorbing SO2 in sulfuric acid production tail gas with ammonia, which has the advantages of high efficiency and low energy consumption. The existing ammonia desulfurization tower, such as the ammonia desulfurization tower with high efficiency absorption and convenient cleaning disclosed in application number CN202223546099.4, increases successively from bottom to top through the leakage holes, so that a certain amount of ammonia water is always maintained on the top of multiple dividing plates, which greatly reduces the temperature of the flue gas and effectively reduces the amount of ammonia generated. The ammonia water sprayed by the nozzle reacts, which can reduce the generation of aerosol particles and prevent the generation of white smoke, and can also improve the desulfurization capacity, and can clean impurities, reduce the overflow of ammonia in the tower body, and reduce environmental pollution.

[0003] However, in actual use, as the flue gas continues to enter the desulfurization tower in the prior art, the temperature inside the desulfurization tower will continue to rise, and the temperature of the solution after the spraying reaction will also rise accordingly, which will easily decompose into ammonia and be lost, affecting the effect and efficiency of the desulfurization treatment. In addition, the effect of mixing with the flue gas is poor when it only relies on the spraying method to react with the flue gas, which will result in some flue gas being unable to fully react with the ammonia solution. For this reason, we propose an ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning to solve the above problems. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning, which effectively solves the problem that the temperature of the ammonia solution in the existing ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning will gradually increase during use and easily decompose into ammonia gas and cause loss, and solves the problem that the mixing reaction between the flue gas and the ammonia solution in the existing desulfurization tower is not complete.

[0005] The technical solution adopted by the utility model is as follows: the utility model proposes an ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning, comprising a desulfurization tower main body, a sedimentation box is provided at the bottom of the desulfurization tower main body, a storage box is provided on one side of the desulfurization tower main body, and the storage box is connected to the sedimentation box, a circulating cooling mechanism is provided on the desulfurization tower main body, a spray filtering mechanism is provided in the desulfurization tower main body, and the spray filtering mechanism is connected to the circulating cooling mechanism, an air inlet pipe is provided on the side wall of the desulfurization tower main body, an air collecting hood is provided on the top of the desulfurization tower main body, and an exhaust pipe is provided at the upper end of the air collecting hood.

[0006] As an improvement of the present scheme, the circulating cooling mechanism includes an infusion pipe, a circulating pump, a radiator, a fixed plate, a rotating shaft and a spiral conveying plate. The infusion pipe is arranged on the side wall of the desulfurization tower body, and the bottom end of the infusion pipe is at the bottom of the storage box. The circulating pump is arranged on the side wall of the desulfurization tower body and is connected with the infusion pipe. The radiator is arranged on the side wall of the desulfurization tower body and is connected with the infusion pipe. The fixed plate is arranged on the inner wall of the connection between the sedimentation box and the storage box. The rotating shaft is rotatably connected to the sedimentation box and the fixed plate, and the spiral conveying plate is arranged on the rotating shaft.

[0007] As an improvement of the present scheme, the spray filtration mechanism includes a guide plate, an extension plate, a spray head, a baffle and a filter adsorption block. The guide plate is arranged on the inner wall of the desulfurization tower body and above the sedimentation box, the extension plate is arranged on the inner wall of the desulfurization tower body, the spray head is arranged on the infusion pipe and inside the desulfurization tower body, the baffle is arranged on the inner wall of the desulfurization tower body and above the spray head, and the filter adsorption block is plugged and connected to the desulfurization tower body and arranged on the baffle.

[0008] As an improvement of this solution, a sealing plate is provided on the side wall of the desulfurization tower body, and the sealing plate is arranged on one side of the filter adsorption block, a cleaning plate is provided at the bottom end of the storage box side wall, and a reduction motor is provided on the sedimentation box side wall and connected to the rotating shaft.

[0009] As an improvement of the present solution, the expansion plate and the spray head are arranged in an alternating manner, and the baffle is arranged between the filter adsorption block and the spray head.

[0010] As an improvement of the present solution, the expansion plate is designed as a curved plate-like structure, the air intake pipe is arranged in an S shape, and the lowest end of the air intake pipe is arranged lower than the guide plate.

[0011] As an improvement of the present solution, the guide plates are provided in two groups, and the two groups of guide plates are inclined in opposite directions.

[0012] The beneficial effects achieved by the utility model using the above structure are as follows:

[0013] 1. The structural design of the air inlet pipe being lower than the ammonia solution can make the flue gas fully react with the ammonia solution and reduce the temperature of the flue gas, thereby reducing the generation of aerosol particles and pollution when the flue gas rises. In addition, the expansion plate and the sprinkler head assist in the reaction with the flue gas, thus improving the desulfurization effect and efficiency of the desulfurization tower;

[0014] 2. It is equipped with a desulfurization box and a sedimentation box. The solid impurities generated after desulfurization can be transported to the desulfurization box through a spiral conveyor plate, which is convenient for subsequent centralized cleaning. The ammonia solution can be reused through a circulating pump, reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the overall structure of an ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning proposed by the utility model;

[0016] Figure 2 The utility model provides a cross-sectional view of an ammonia-based desulfurization tower with high-efficiency absorption and convenient cleaning.

[0017] Among them, 1. desulfurization tower body, 2. sedimentation box, 3. storage box, 4. circulation cooling mechanism, 5. spray filtration mechanism, 6. air inlet pipe, 7. air collecting hood, 8. exhaust pipe, 9. infusion pipe, 10. circulation pump, 11. radiator, 12. fixed plate, 13. rotating shaft, 14. spiral conveyor plate, 15. guide plate, 16. expansion plate, 17. spray head, 18. baffle, 19. filter adsorption block, 20. sealing plate, 21. cleaning plate, 22. reduction motor.

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] like Figure 1 and Figure 2 As shown, the utility model proposes an ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning, including a desulfurization tower body 1, a sedimentation box 2 is provided at the bottom of the desulfurization tower body 1, a storage box 3 is provided on one side of the desulfurization tower body 1, and the storage box 3 is connected with the sedimentation box 2, a circulating cooling mechanism 4 is provided on the desulfurization tower body 1, a spray filtering mechanism 5 is provided in the desulfurization tower body 1, and the spray filtering mechanism 5 is connected with the circulating cooling mechanism 4, an air inlet pipe 6 is provided on the side wall of the desulfurization tower body 1, an air collecting hood 7 is provided on the top of the desulfurization tower body 1, and an exhaust pipe 8 is provided at the upper end of the air collecting hood 7.

[0021] In order to cool the ammonia solution and realize the spraying function, the circulating cooling mechanism 4 includes an infusion pipe 9, a circulating pump 10, a radiator 11, a fixed plate 12, a rotating shaft 13 and a spiral conveying plate 14. The infusion pipe 9 is arranged on the side wall of the desulfurization tower body 1, and the bottom end of the infusion pipe 9 is at the bottom of the storage box 3. The circulating pump 10 is arranged on the side wall of the desulfurization tower body 1 and is connected with the infusion pipe 9. The radiator 11 is arranged on the side wall of the desulfurization tower body 1 and is connected with the infusion pipe 9. The fixed plate 12 is arranged on the inner wall of the connection between the sedimentation box 2 and the storage box 3. The rotating shaft 13 is rotatably connected to the sedimentation box 2 and the fixed plate 12, and the spiral conveying plate 14 is arranged on the rotating shaft 13.

[0022] In order to assist in desulfurization of flue gas and filter impurities in the flue gas, the spray filtering mechanism 5 includes a guide plate 15, an expansion plate 16, a spray head 17, a baffle 18 and a filter adsorption block 19. The guide plate 15 is arranged on the inner wall of the desulfurization tower body 1 and is arranged above the sedimentation box 2. The expansion plate 16 is arranged on the inner wall of the desulfurization tower body 1. The spray head 17 is arranged on the infusion pipe 9 and is arranged in the desulfurization tower body 1. The baffle 18 is arranged on the inner wall of the desulfurization tower body 1 and is arranged above the spray head 17. The filter adsorption block 19 is plugged and connected to the desulfurization tower body 1 and is arranged on the baffle 18.

[0023] A sealing plate 20 is provided on the side wall of the desulfurization tower body 1, and the sealing plate 20 is provided on one side of the filter adsorption block 19, a cleaning plate 21 is provided at the bottom end of the side wall of the storage box 3, and a reduction motor 22 is provided on the side wall of the sedimentation box 2 and is connected to the rotating shaft 13; the expansion plate 16 and the spray head 17 are arranged at intervals, and the baffle 18 is provided between the filter adsorption block 19 and the spray head 17.

[0024] The expansion plate 16 is designed as a curved plate structure, the air intake pipe 6 is arranged in an S shape, and the lowest end of the air intake pipe 6 is arranged lower than the guide plate 15; there are two groups of guide plates 15, and the two groups of guide plates 15 are inclined in opposite directions.

[0025] During specific use, ammonia solution is added to the storage box 3 until the solution height in the desulfurization tower body 1 is flush with the highest point of the upper guide plate 15, and flue gas is introduced into the desulfurization tower body 1 through the air inlet pipe 6, so that the flue gas enters the ammonia solution and gradually rises along the cross-section of the guide plate 15. During this period, the sulfide in the flue gas reacts with the ammonia solution and cools down. As the flue gas rises, the circulation pump 10 is turned on to cool the ammonia solution in the storage box 3 through the radiator 11 and then sent to the spray head 17 for spraying, so that the surface of the expansion plate 16 is evenly stained with ammonia solution. As the flue gas rises, it further reacts with the ammonia solution when passing through the gap between the expansion plates 16, and at the same time reacts with the ammonia solution sprayed from the spray head 17. The flue gas after the reaction continues to rise and is filtered by the filter adsorption block 19 and then discharged from the exhaust pipe 8. In the whole process, the reduction motor 20 is used to drive the spiral conveying plate 14 on the rotating shaft 13 to rotate, so that the precipitate generated by the reaction is transported to 03 for centralized treatment. The above is the use process of the entire ammonia desulfurization tower with efficient absorption and convenient cleaning.

[0026] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning, comprising a desulfurization tower body, characterized in that: A sedimentation box is provided at the bottom of the desulfurization tower body, a storage box is provided on one side of the desulfurization tower body, and the storage box is connected to the sedimentation box, a circulating cooling mechanism is provided on the desulfurization tower body, a spray filtering mechanism is provided in the desulfurization tower body, and the spray filtering mechanism is connected to the circulating cooling mechanism, an air inlet pipe is provided on the side wall of the desulfurization tower body, an air collecting hood is provided on the top of the desulfurization tower body, and an exhaust pipe is provided at the upper end of the air collecting hood.

2. The ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning according to claim 1 is characterized in that: The circulating cooling mechanism includes an infusion pipe, a circulation pump, a radiator, a fixed plate, a rotating shaft and a spiral conveying plate. The infusion pipe is arranged on the side wall of the desulfurization tower body, and the bottom end of the infusion pipe is at the bottom of the storage box. The circulating pump is arranged on the side wall of the desulfurization tower body and is connected with the infusion pipe. The radiator is arranged on the side wall of the desulfurization tower body and is connected with the infusion pipe. The fixed plate is arranged on the inner wall of the connection between the sedimentation box and the storage box. The rotating shaft is rotatably connected to the sedimentation box and the fixed plate, and the spiral conveying plate is arranged on the rotating shaft.

3. The ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning according to claim 2 is characterized in that: The spray filtration mechanism includes a guide plate, an extension plate, a spray head, a baffle and a filter adsorption block. The guide plate is arranged on the inner wall of the desulfurization tower body and above the sedimentation box, the extension plate is arranged on the inner wall of the desulfurization tower body, the spray head is arranged on the infusion pipe and inside the desulfurization tower body, the baffle is arranged on the inner wall of the desulfurization tower body and above the spray head, and the filter adsorption block is plugged and connected to the desulfurization tower body and arranged on the baffle.

4. The ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning according to claim 3 is characterized in that: A sealing plate is provided on the side wall of the desulfurization tower body, and the sealing plate is arranged on one side of the filter adsorption block. A cleaning plate is provided at the bottom end of the storage box side wall. A reduction motor is provided on the side wall of the sedimentation box and is connected to the rotating shaft.

5. The ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning according to claim 4 is characterized in that: The expansion plate and the spray head are arranged in an interval manner, and the baffle is arranged between the filter adsorption block and the spray head.

6. The ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning according to claim 5 is characterized in that: The expansion plate is designed as a curved plate-like structure, the air intake pipe is arranged in an S shape, and the lowest end of the air intake pipe is arranged lower than the guide plate.

7. The ammonia-based desulfurization tower with high efficiency absorption and convenient cleaning according to claim 6 is characterized in that: The guide plates are provided in two groups, and the two groups of guide plates are inclined in opposite directions.

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