Limestone wet desulfurization device

Abstract

The utility model relates to the technical field of limestone wet desulphurization, and disclose a limestone wet desulphurization device, including desulfurizing tower, the left side fixed mounting of desulfurizing tower has the air inlet pipe, the top fixed mounting of desulfurizing tower has the apron, the top fixed mounting of apron has the exhaust pipe. This limestone wet desulphurization device, can utilize the spray head in midair, not only increase the contact area of solution spray with flue gas, and can assist to promote the highest height of solution falling, prolong the overall reaction time, improve the overall spraying effect, by setting homogenization reaction subassembly, have the advantage that promote the stirring, can under the drive of drive motor, while stirring mixes, the bottom sediment material is turned up, and the back falls are discharged by the discharge pipe, and the overall stirring effect is better The device becomes the core technology of industrial flue gas treatment through efficient desulfurization, especially suitable for large coal-fired facilities, compared with other desulfurization process, the byproduct of wet desulfurization does not need to be filled, reduces the environmental burden.

Description

Technical Field

[0001] This utility model relates to the field of limestone wet desulfurization technology, specifically a limestone wet desulfurization device. Background Technology

[0002] Limestone wet desulfurization technology originated in the mid-20th century, initially used to address sulfur dioxide (SO2) pollution from coal-fired power plants. With increasingly stringent environmental regulations, this technology has gradually become the mainstream method for industrial flue gas desulfurization.

[0003] Flue gas is conveyed upwards inside the desulfurization tower, while limestone slurry is sprayed downwards vertically through spray pipes. The flue gas and slurry interact and undergo a chemical reaction. Over time, the reactants from the slurry and flue gas adhere to the spray heads, affecting the spraying effect and even causing blockage. Furthermore, impurities in the limestone slurry may also cause blockage during prolonged spraying operations, all of which affect the desulfurization efficiency of the flue gas. In addition, the calcium sulfate dihydrate formed after the reaction between the flue gas and slurry is easily condensed at the bottom of the desulfurization tower, and excessive condensation will hinder its smooth discharge. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a limestone wet desulfurization device to solve the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a limestone wet desulfurization device, comprising a desulfurization tower, an air inlet pipe fixedly installed on the left side of the desulfurization tower, a cover plate fixedly installed on the top of the desulfurization tower, an exhaust pipe fixedly installed on the top of the cover plate, a slurry storage pipe I fixedly installed inside the upper part of the desulfurization tower, a slurry storage pipe II disposed inside the slurry storage pipe I, a slurry storage seat disposed inside the slurry storage pipe II, and the slurry storage pipe I, the slurry storage pipe II, and the slurry storage seat connected by a first connecting pipe and a second connecting pipe, and a slurry pipe fixedly installed on the top of the slurry storage seat. Spray pipes are fixedly installed at the bottom of the first slurry storage pipe, the second slurry storage pipe, and the slurry storage base. Spray heads are fixedly installed at the bottom of the spray pipes. A connecting column is fixedly installed at the bottom of the first slurry storage pipe. A fixed plate is fixedly installed at the bottom of the connecting column. A spray hole corresponding to the spray pipe is opened at the top of the fixed plate. A fixed column is fixedly installed at the bottom of the fixed plate. A fixed base is fixedly installed at the bottom of the fixed column. A motor is fixedly installed at the bottom of the fixed base. A rotating disk is fixedly installed at the top of the fixed base. A rotating rod is fixedly connected to the output shaft of the motor. A stirring blade is provided on the outer side of the rotating rod.

[0008] Preferably, the motor is fixedly installed at the bottom of the desulfurization tower, passes through the desulfurization tower and the fixed base, and is connected to the rotating disk.

[0009] Preferably, four support legs are fixedly installed at the four corners of the bottom of the desulfurization tower.

[0010] Preferably, the first slurry storage pipe, the second slurry storage pipe, and the slurry storage seat are all connected through a first connecting pipe and a second connecting pipe.

[0011] Preferably, there are several spray pipes, and each spray pipe is located at the bottom of the slurry storage pipe one, the slurry storage pipe two, and the slurry storage base.

[0012] Preferably, a discharge pipe is fixedly installed on the right side of the desulfurization tower, and a valve is fixedly installed on the top of the discharge pipe.

[0013] Compared with existing technologies, this utility model provides a limestone wet desulfurization device with the following advantages: This limestone wet desulfurization device utilizes suspended nozzles, which not only increases the contact area between the solution and flue gas during spraying but also helps to raise the maximum height of the solution fall, extending the overall reaction time and improving the overall spraying effect. By setting up homogenization reaction components, it has the advantage of enhanced stirring, enabling the bottom sediment to be agitated and discharged back down through the discharge pipe while being stirred and mixed under the drive of a motor, resulting in better overall stirring. Through its high-efficiency desulfurization, by-product value-added, and mature and reliable characteristics, this device has become a core technology for industrial flue gas treatment, especially suitable for large-scale coal-fired facilities. Compared with other desulfurization processes, the by-products of wet desulfurization do not need to be landfilled, reducing the environmental burden. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the spray pipe structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the rotating disk structure of this utility model.

[0017] In the diagram: 1. Desulfurization tower; 2. Inlet pipe; 3. Cover plate; 4. Exhaust pipe; 5. Slurry storage pipe one; 6. Slurry storage pipe two; 7. Slurry storage base; 8. First connecting pipe; 9. Second connecting pipe; 10. Slurry pipe; 11. Spray pipe; 12. Spray head; 13. Connecting column; 14. Spray hole; 15. Fixed column; 16. Motor; 17. Fixed base; 18. Rotary disc; 19. Rotating rod; 20. Stirring blade; 21. Discharge pipe; 22. Valve; 23. Support leg; 1301. Fixed disc. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1-3As shown, a limestone wet desulfurization device includes a desulfurization tower 1. An air inlet pipe 2 is fixedly installed on the left side of the desulfurization tower 1. A cover plate 3 is fixedly installed on the top of the desulfurization tower 1, and an exhaust pipe 4 is fixedly installed on the top of the cover plate 3. A slurry storage pipe 1 5 is fixedly installed inside the upper part of the desulfurization tower 1. A slurry storage pipe 2 6 is arranged inside the slurry storage pipe 1 5, and a slurry storage seat 7 is arranged inside the slurry storage pipe 2 6. The slurry storage pipe 1 5, the slurry storage pipe 2 6, and the slurry storage seat 7 are connected by a first connecting pipe 8 and a second connecting pipe 9. A slurry pipe 10 is fixedly installed on the top of the slurry storage seat 7. The slurry storage pipe 1 5, the slurry storage pipe 2 6, and the slurry storage seat 7 are all connected together. Spray pipes 11 are fixedly installed at the bottom of each of the slurry storage pipes 11 and spray heads 12 are fixedly installed at the bottom of each of the slurry storage pipes 11 and 5. A connecting column 13 is fixedly installed at the bottom of the connecting column 13 and a fixed plate 1301 is fixedly installed at the bottom of the connecting column 13. A spray hole 14 corresponding to the spray pipe 11 is opened at the top of the fixed plate 1301 and a fixed column 15 is fixedly installed at the bottom of the fixed column 15 and a fixed base 17 is fixedly installed at the bottom of the fixed base 17. A motor 16 is fixedly installed at the bottom of the fixed base 17 and a rotating disk 18 is fixedly installed at the top of the fixed base 17. A rotating rod 19 is fixedly connected to the output shaft of the motor 16 and a stirring blade 20 is provided on the outside of the rotating rod 19.

[0020] Furthermore, the motor 16 is fixedly installed at the bottom of the desulfurization tower 1, and passes through the desulfurization tower 1 and the fixed base 17 and is connected to the rotating disk 18.

[0021] With the above technical solution, the motor 16 is located at the bottom of the desulfurization tower 1 and is rigidly connected to the tower body through the fixing seat 17. This can effectively absorb the vibration of the motor 16 during operation, prevent the vibration from being transmitted to the upper part of the tower body, and extend the service life of the equipment.

[0022] Furthermore, four support legs 23 are fixedly installed at the four corners of the bottom of the desulfurization tower 1.

[0023] Through the above technical solutions, the four-corner support design ensures that the weight of the tower and the operating load are evenly distributed to the four support points, avoiding local stress concentration and extending the service life of the tower.

[0024] Furthermore, the slurry storage pipe 5, the slurry storage pipe 6, and the slurry storage base 7 are all connected through the first connecting pipe 8 and the second connecting pipe 9.

[0025] The above technical solution enables free flow of slurry between multiple storage units through connecting pipes, and can automatically adjust the liquid level and concentration of each unit according to the desulfurization reaction requirements, avoiding local sedimentation or uneven concentration.

[0026] Furthermore, several spray pipes 11 are provided, each spray pipe 11 being located at the bottom of slurry storage pipe 1 5, slurry storage pipe 2 6, and slurry storage base 7.

[0027] With the above technical solution, each storage unit is independently equipped with a spray pipe 11 at the bottom. By spraying fresh slurry or oxidizing air upwards, turbulent disturbance is formed to prevent limestone particles from settling and forming scale.

[0028] Furthermore, a discharge pipe 21 is fixedly installed on the right side of the desulfurization tower 1, and a valve 22 is fixedly installed on the top of the discharge pipe 21.

[0029] Through the above technical solution, valve 22 can accurately control the discharge speed, avoiding pipe blockage or overload of downstream processing equipment caused by sudden large-scale discharge of slurry or gypsum.

[0030] Working principle: First, flue gas is injected through the inlet pipe 2 located on the left side of the desulfurization tower 1. The flue gas is transported into the desulfurization tower 1 through the inlet pipe 2. Slurry is injected into the slurry pipe 10, causing the slurry to flow into the slurry storage pipe 5, the slurry storage pipe 6, and the slurry storage base 7. The slurry flows in through the first connecting pipe 8 and the second connecting pipe 9, and is then sprayed out through the spray head 12 and the spray hole 14, allowing the flue gas to come into contact with the limestone slurry and react. The sulfur dioxide in the flue gas reacts with the limestone slurry. The liquid undergoes a chemical reaction to produce calcium sulfate dihydrate, thus completing the desulfurization process. The flue gas continues to be conveyed upward inside the desulfurization tower 1 and is finally discharged from the exhaust pipe 4. The calcium sulfate dihydrate and the sprayed slurry fall to the bottom of the desulfurization tower 1. By starting the motor 16, the output shaft of the motor 16 rotates, driving the rotating disk 18 and the rotating rod 19 to rotate, which in turn drives the stirring blades 20 to rotate, preventing the slurry from solidifying. Finally, it is discharged through the discharge pipe 21, and the discharged material can be controlled by the valve 22 at the top of the discharge pipe 21.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limestone wet desulfurization device, comprising a desulfurization tower (1), characterized in that: An air inlet pipe (2) is fixedly installed on the left side of the desulfurization tower (1). A cover plate (3) is fixedly installed on the top of the desulfurization tower (1). An exhaust pipe (4) is fixedly installed on the top of the cover plate (3). A slurry storage pipe (5) is fixedly installed above the inside of the desulfurization tower (1). A slurry storage pipe (6) is installed inside the slurry storage pipe (5). A slurry storage seat (7) is installed inside the slurry storage pipe (6). The slurry storage pipe (5), the slurry storage pipe (6), and the slurry storage seat (7) are connected by a first connecting pipe (8) and a second connecting pipe (9). A slurry pipe (10) is fixedly installed on the top of the slurry storage seat (7). Spray pipes are fixedly installed at the bottom of the slurry storage pipe (5), the slurry storage pipe (6), and the slurry storage seat (7). (11) A spray head (12) is fixedly installed at the bottom of the spray pipe (11), a connecting column (13) is fixedly installed at the bottom of the slurry storage pipe (5), a fixed plate (1301) is fixedly installed at the bottom of the connecting column (13), a spray hole (14) corresponding to the spray pipe (11) is opened at the top of the fixed plate (1301), a fixed column (15) is fixedly installed at the bottom of the fixed plate (1301), a fixed seat (17) is fixedly installed at the bottom of the fixed column (15), a motor (16) is fixedly installed at the bottom of the fixed seat (17), a rotating disk (18) is fixedly installed at the top of the fixed seat (17), a rotating rod (19) is fixedly connected to the output shaft of the motor (16), and a stirring blade (20) is provided on the outside of the rotating rod (19).

2. The limestone wet desulfurization device according to claim 1, characterized in that: The motor (16) is fixedly installed at the bottom of the desulfurization tower (1), and passes through the desulfurization tower (1) and the fixed base (17) and is connected to the rotating disk (18).

3. The limestone wet desulfurization device according to claim 1, characterized in that: The desulfurization tower (1) is fixedly installed with four support legs (23) at the four corners of its bottom.

4. The limestone wet desulfurization device according to claim 1, characterized in that: The slurry storage pipe one (5), slurry storage pipe two (6) and slurry storage seat (7) are all connected through the first connecting pipe (8) and the second connecting pipe (9).

5. A limestone wet desulfurization device according to claim 1, characterized in that: Several spray pipes (11) are provided, and each spray pipe (11) is located at the bottom of slurry storage pipe one (5), slurry storage pipe two (6) and slurry storage seat (7).

6. The limestone wet desulfurization device according to claim 1, characterized in that: A discharge pipe (21) is fixedly installed on the right side of the desulfurization tower (1), and a valve (22) is fixedly installed on the top of the discharge pipe (21).

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