Ammonia desulfurization tower with self-flushing structure

Abstract

The utility model discloses an ammonia process desulfurization tower with a self-flushing structure, which comprises a desulfurization tower kettle main body, a liquid outlet is fixedly arranged at the bottom of the surface of the desulfurization tower kettle main body, stirrers are fixedly arranged on two sides of the bottom of the surface of the desulfurization tower kettle main body, and the two stirrers are respectively positioned on two sides of the liquid outlet. A circulating pump mounting plate is fixedly arranged on one side of the surface of the desulfurizing tower kettle main body, and a plurality of circulating slurry pumps which are uniformly distributed are fixedly mounted at the top of the circulating pump mounting plate. The ammonia desulfurization tower with the self-flushing structure has the advantages that the problem of material hanging on the tower wall is avoided, long-period stable operation of the system is guaranteed, and meanwhile, the two stirrers are mounted on the ammonia desulfurization tower with the self-flushing structure and used for stirring oxidation desulfurization liquid, so that the oxidation desulfurization liquid is free of precipitation and more uniform in concentration, and circulating concentration and spraying of the liquid are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization towers, and particularly relates to an ammonia-based desulfurization tower with a self-flushing structure. Background Art

[0002] A desulfurization tower is a tower-type device mainly used for desulfurizing industrial waste gas to reduce environmental pollution. It protects air quality and human health by absorbing and decomposing sulfides in flue gas, such as sulfur dioxide. The design and manufacture of desulfurization towers need to consider multiple factors, including a large contact area and a certain contact time between gas and liquid, strong perturbation between gas and liquid, small absorption resistance, high absorption efficiency of sulfur dioxide, small pressure drop when the gas flow passes through, stable operation, and a suitable operation flexibility, etc.

[0003] Traditional desulfurization towers have the following defects:

[0004] (1) When using a traditional ammonium sulfate desulfurization tower, due to the strong viscosity of ammonium sulfate, after a period of operation, there will be serious ammonium sulfate wall hanging on the desulfurization tower wall. The large pieces of ammonium sulfate that fall off after wall hanging will block the inlet of the pump, affecting the stable operation of the system;

[0005] (2) When using a traditional ammonium sulfate desulfurization tower, after the equipment is shut down, the cleaning work requires a large amount of manpower, material resources and financial resources. Content of the Utility Model

[0006] The purpose of the utility model is to provide an ammonia-based desulfurization tower with a self-flushing structure to solve the problems mentioned in the above background art, that is, when using a traditional ammonium sulfate desulfurization tower, due to the strong viscosity of ammonium sulfate, after a period of operation, there will be serious ammonium sulfate wall hanging on the desulfurization tower wall. The large pieces of ammonium sulfate that fall off after wall hanging will block the inlet of the pump, affecting the stable operation of the system; when using a traditional ammonium sulfate desulfurization tower, after the equipment is shut down, the cleaning work requires a large amount of manpower, material resources and financial resources.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An ammonia desulfurization tower with a self-flushing structure, including a main body of the desulfurization tower kettle. At the bottom of the surface of the main body of the desulfurization tower kettle, a liquid discharge port is fixedly arranged. On both sides of the bottom of the surface of the main body of the desulfurization tower kettle, stirrers are fixedly arranged, and the two stirrers are respectively located on both sides of the liquid discharge port. On one side of the surface of the main body of the desulfurization tower kettle, a circulating pump mounting plate is fixedly arranged. On the top of the circulating pump mounting plate, a plurality of evenly distributed circulating slurry pumps are fixedly installed. Inside the main body of the desulfurization tower kettle, a circulating pipe is fixedly arranged above the flue gas inlet. One end of the circulating pipe is fixedly connected to the output end of one of the circulating slurry pumps. Inside the main body of the desulfurization tower kettle, an alloy porous tray is fixedly arranged above the circulating pipe. On the top of the alloy porous tray, a concentrated spray pipe is fixedly installed. Inside the top of the main body of the desulfurization tower kettle, a lower demister flushing pipe, a flat demister, and an upper demister flushing pipe are fixedly arranged in sequence. Inside the flat demister, a plurality of evenly distributed clamping plates are fixedly arranged, and the distance between the clamping plates is set to 30 - 35 mm. The distances between the lower demister flushing pipe and the upper demister flushing pipe and the flat demister are both 700 - 800 mm. The distance between the clamping plates is used to ensure the demisting effect and the anti-blocking performance of the flat demister.

[0008] Preferably, a flue gas inlet is fixedly arranged in the middle of the surface of the main body of the desulfurization tower kettle, and the flue gas inlet is used for the entry of flue gas.

[0009] Preferably, a plurality of evenly distributed air oxidation pipes are fixedly arranged at the bottom inside the main body of the desulfurization tower kettle, and an oxidation desulfurization liquid is placed at the bottom inside the main body of the desulfurization tower kettle. The oxidation desulfurization liquid is used for the dissolution of particulate matter in water.

[0010] Preferably, one end of the concentrated spray pipe is fixedly connected to the output end of another circulating slurry pump, and the concentrated spray pipe is used for the cooling of flue gas and the concentration and enrichment of ammonium sulfate slurry.

[0011] Preferably, a plurality of evenly distributed nozzles with automatic flushing valves are fixedly arranged inside the lower demister flushing pipe, the upper demister flushing pipe, and the circulating pipe. The nozzles with automatic flushing valves are used to avoid the problem of no hanging material on the tower wall.

[0012] Preferably, a mounting clamping block is fixedly arranged at the top end inside the main body of the desulfurization tower kettle, and a filter plate is snap-connected inside the mounting clamping block. The filter plate is used for the purification and filtration of flue gas.

[0013] Preferably, a flue gas outlet is fixedly connected to the top of the main body of the desulfurization tower kettle, and the flue gas outlet is used for the output of flue gas.

[0014] Preferably, a plurality of uniformly distributed silicon carbide nozzles are fixedly connected to the bottom of the concentrated spray pipe, and the silicon carbide nozzles are used for spraying the oxidative desulfurization liquid.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The desulfurization tower designed by this method has a self-flushing function, ensuring that there is no problem of material hanging on the tower wall after long-term operation, guaranteeing the long-term stable operation of the system. At the same time, two agitators are installed in the ammonia method desulfurization tower with a self-flushing structure. The two agitators are used to agitate the oxidative desulfurization liquid, so that the oxidative desulfurization liquid has no precipitation and the liquid concentration is more uniform, which is beneficial to the circulating concentration spraying of the liquid. Description of the Drawings

[0016] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0017] Figure 2 is a front sectional view of the present utility model;

[0018] Figure 3 is an enlarged view of the partial A of the present utility model.

[0019] In the figure: 1. Desulfurization tower bottom main body; 2. Agitator; 3. Liquid discharge port; 4. Air oxidation pipe; 5. Flue gas inlet; 6. Circulating slurry pump; 7. Circulation pipe; 8. Concentrated spray pipe; 9. Demister lower layer flushing pipe; 10. Demister upper layer flushing pipe; 11. Flue gas outlet; 12. Oxidative desulfurization liquid; 13. Alloy porous tray; 14. Nozzle with automatic flushing valve; 15. Flat demister; 16. Splint; 17. Silicon carbide nozzle; 18. Circulation pump mounting plate; 19. Mounting clamp block; 20. Filter plate. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-3, the present utility model provides an ammonia desulfurization tower with a self-flushing structure, which includes a desulfurization tower bottom main body 1. A liquid discharge port 3 is fixedly arranged at the bottom of the surface of the desulfurization tower bottom main body 1. Stirrers 2 are fixedly arranged on both sides of the bottom of the surface of the desulfurization tower bottom main body 1, and the two stirrers 2 are respectively located on both sides of the liquid discharge port 3. A circulating pump mounting plate 18 is fixedly arranged on one side of the surface of the desulfurization tower bottom main body 1. A plurality of evenly distributed circulating slurry pumps 6 are fixedly installed on the top of the circulating pump mounting plate 18. A circulating pipe 7 is fixedly arranged inside the desulfurization tower bottom main body 1 above the flue gas inlet 5. One end of the circulating pipe 7 is fixedly connected to the output end of one of the circulating slurry pumps 6. An alloy porous tray 13 is fixedly arranged inside the desulfurization tower bottom main body 1 above the circulating pipe 7. A concentrated spray pipe 8 is fixedly installed on the top of the alloy porous tray 13. A lower demister flushing pipe 9, a flat demister 15 and an upper demister flushing pipe 10 are successively fixedly arranged at the top inside the desulfurization tower bottom main body 1. A plurality of evenly distributed clamping plates 16 are fixedly arranged inside the flat demister 15, and the distance between the clamping plates 16 is set to be 30 - 35 mm. The distances between the lower demister flushing pipe 9 and the upper demister flushing pipe 10 and the flat demister 15 are both 700 - 800 mm.

[0022] During use, the demister flushing layer is composed of the lower demister flushing pipe 9 and the upper demister flushing pipe 10, and the distance between the demister flushing nozzles and the flat demister 15 is preferably 700 - 800 mm.

[0023] A flue gas inlet 5 is fixedly arranged in the middle of the surface of the desulfurization tower bottom main body 1. A plurality of evenly distributed air oxidation pipes 4 are fixedly arranged at the bottom inside the desulfurization tower bottom main body 1. Oxidation desulfurization liquid 12 is placed at the bottom inside the desulfurization tower bottom main body 1. One end of the concentrated spray pipe 8 is fixedly connected to the output end of another one of the circulating slurry pumps 6.

[0024] During use, a flue gas inlet 5 is arranged in the middle of the surface of the desulfurization tower bottom main body 1, and flue gas enters through the flue gas inlet 5.

[0025] A plurality of evenly distributed nozzles 14 with automatic flushing valves are fixedly arranged inside the lower demister flushing pipe 9, the upper demister flushing pipe 10 and the circulating pipe 7. A mounting clamp block 19 is fixedly arranged at the top inside the desulfurization tower bottom main body 1. A filter plate 20 is snap-connected inside the mounting clamp block 19. A flue gas outlet 11 is fixedly connected to the top of the desulfurization tower bottom main body 1. A plurality of evenly distributed silicon carbide nozzles 17 are fixedly connected to the bottom of the concentrated spray pipe 8.

[0026] During use, the concentrated spray layer and the desulfurization tower bottom form a concentrated spray cycle, and spraying is carried out using the silicon carbide nozzles 17 to complete the cooling of the flue gas and the concentration and enrichment of the ammonium sulfate slurry.

[0027] In specific use, for the ammonia desulfurization tower with a self-flushing structure of the present utility model, when using this ammonia desulfurization tower with a self-flushing structure, the equipment main body consists of a concentrated spray layer, a flat demister 15, a demister flushing layer, and a desulfurization tower bottom main body 1. The concentrated spray layer and the desulfurization tower bottom form a concentrated spray circulation to complete the cooling of the flue gas and the concentration and enrichment of the ammonium sulfate slurry. The main function of the flat demister 15 is to prevent the entrainment of the slurry. The demister flushing layer is composed of a lower demister flushing pipe 9 and an upper demister flushing pipe 10. The distance between the demister flushing nozzle and the flat demister 15 is preferably 700 - 800 mm. Each flushing pipe is provided with an electric or pneumatic valve, and automatic control can be achieved by setting the flushing time and the flushing interval. The desulfurization tower designed by this method has a self-flushing function, ensuring that after long-term operation, there is no problem of material hanging on the tower wall, guaranteeing the long-term stable operation of the system. At the same time, two stirrers 2 are installed in the ammonia desulfurization tower with a self-flushing structure. The two stirrers 2 are used to agitate the oxidative desulfurization liquid 12, so that the oxidative desulfurization liquid 12 has no precipitation and the liquid concentration is more uniform, which is beneficial to the circulating concentrated spray of the liquid. This is the use process of the ammonia desulfurization tower with a self-flushing structure.

[0028] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An ammonia desulfurization tower with a self-flushing structure, comprising a desulfurization tower bottom main body (1), characterized in that: A liquid discharge port (3) is fixedly arranged at the bottom of the surface of the main body (1) of the desulfurization tower bottom kettle. Stirrers (2) are fixedly arranged on both sides of the bottom of the surface of the main body (1) of the desulfurization tower bottom kettle. The two stirrers (2) are respectively located on both sides of the liquid discharge port (3). A circulating pump mounting plate (18) is fixedly arranged on one side of the surface of the main body (1) of the desulfurization tower bottom kettle. A plurality of uniformly distributed circulating slurry pumps (6) are fixedly installed on the top of the circulating pump mounting plate (18). A circulating pipe (7) is fixedly arranged inside the main body (1) of the desulfurization tower bottom kettle above the flue gas inlet (5). One end of the circulating pipe (7) is fixedly connected to the output end of one of the circulating slurry pumps (6). An alloy porous tray (13) is fixedly arranged inside the main body (1) of the desulfurization tower bottom kettle above the circulating pipe (7). A concentrated spray pipe (8) is fixedly installed on the top of the alloy porous tray (13). A lower demister washing pipe (9), a flat demister (15) and an upper demister washing pipe (10) are fixedly arranged in sequence at the top inside the main body (1) of the desulfurization tower bottom kettle. A plurality of uniformly distributed clamping plates (16) are fixedly arranged inside the flat demister (15). The distance between the clamping plates (16) is set to be 30 - 35 mm. The distances between the lower demister washing pipe (9) and the upper demister washing pipe (10) and the flat demister (15) are both 700 - 800 mm.

2. The ammonia desulfurization tower with a self-flushing structure according to claim 1, characterized in that: A flue gas inlet (5) is fixedly arranged in the middle of the surface of the main body (1) of the desulfurization tower bottom kettle.

3. The ammonia desulfurization tower with a self-flushing structure according to claim 1, characterized in that: A plurality of uniformly distributed air oxidation pipes (4) are fixedly arranged at the bottom inside the main body (1) of the desulfurization tower bottom kettle. An oxidation desulfurization liquid (12) is placed at the bottom inside the main body (1) of the desulfurization tower bottom kettle.

4. The ammonia desulfurization tower with a self-flushing structure according to claim 1, characterized in that: One end of the concentrated spray pipe (8) is fixedly connected to the output end of the other circulating slurry pump (6).

5. The ammonia desulfurization tower with a self-flushing structure according to claim 1, characterized in that: A plurality of uniformly distributed nozzles (14) with automatic washing valves are fixedly arranged inside the lower demister washing pipe (9), the upper demister washing pipe (10) and the circulating pipe (7).

6. The ammonia desulfurization tower with a self-flushing structure according to claim 1, characterized in that: A mounting clamping block (19) is fixedly arranged at the top end inside the main body (1) of the desulfurization tower bottom kettle. A filter plate (20) is snap - connected inside the mounting clamping block (19).

7. A desulfurization tower using ammonia method with a self-flushing structure according to claim 1, characterized in that: A flue gas outlet (11) is fixedly connected to the top of the main body (1) of the desulfurization tower bottom kettle.

8. The ammonia desulfurization tower with a self-flushing structure according to claim 1, wherein: A plurality of uniformly distributed silicon carbide nozzles (17) are fixedly connected to the bottom of the concentrated spray pipe (8).

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