Sulfuric acid tail gas treatment device based on ammonia desulfurization

Abstract

The utility model relates to the technical field of sulfuric acid production equipment, in particular to a sulfuric acid tail gas treatment device based on ammonia desulfurization, which comprises an outer box body, a snakelike gas inlet pipe is arranged in the outer box body, one end of the gas inlet pipe extends to the outer side of the outer box body, and the other end of the gas inlet pipe is connected with two gas outlet pipes through connecting pipe fittings. The ends, away from the connecting pipe fitting, of the two air outlet pipes are communicated and extend out of the top of the outer box body, and the air outlet pipes are filled with ammonia water. According to the utility model, the two gas outlet pipes are arranged, and ammonia water is filled in the gas outlet pipes, so that the desulfurization effect is further enhanced. The water inlet pipe and the water outlet pipe are designed, so that cold water can be filled in the outer box body, heat of high-temperature gas in the gas inlet pipe is absorbed through the cold water, and heat recovery can be carried out. Due to the design of the connecting pipe fitting, the air inlet pipe is ingeniously connected with the two air outlet pipes, and meanwhile the flow direction of air is controlled through the electromagnetic one-way valve.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfuric acid production equipment, in particular to a sulfuric acid tail gas treatment device based on ammonia desulfurization. Background Art

[0002] In the sulfuric acid production process, tail gas treatment is a key link. These tail gases usually contain harmful substances such as sulfur oxides. If they are discharged directly without treatment, they will have a serious impact on the environment and human health. Therefore, the development of efficient tail gas treatment equipment is of great significance for the environmental protection and sustainable development of sulfuric acid production.

[0003] At present, although there are some tail gas treatment devices on the market, they often have problems such as low treatment efficiency, high energy consumption, and complex operation. Especially when treating tail gas containing high concentrations of sulfur oxides, the performance of these devices is often unsatisfactory. In addition, some traditional tail gas treatment methods may also produce secondary pollution, further exacerbating environmental pressure.

[0004] Ammonia desulfurization is an effective desulfurization technology and is widely used in various industrial tail gas treatments. However, the existing ammonia desulfurization devices still face some challenges when treating sulfuric acid tail gas. For example, how to ensure sufficient contact between tail gas and ammonia water to improve desulfurization efficiency and how to recover the heat of tail gas. In view of this, we propose a sulfuric acid tail gas treatment device based on ammonia desulfurization. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a sulfuric acid tail gas treatment device based on ammonia desulfurization.

[0006] The technical solution of the utility model is:

[0007] The sulfuric acid tail gas treatment device based on ammonia desulfurization comprises an outer box body, wherein a serpentine air inlet pipe is arranged in the outer box body, wherein one end of the air inlet pipe extends to the outside of the outer box body, and the other end is connected to two air outlet pipes through a connecting pipe fitting, and the two air outlet pipes are connected at one end away from the connecting pipe fitting and extend from the top of the outer box body, wherein the air outlet pipe is filled with ammonia water, and an inlet pipe and an outlet pipe are installed on the outer wall of one side of the outer box body, and an electromagnetic two-way valve is installed on the inlet pipe and the outlet pipe, and the connecting pipe fitting comprises a first plug-in connected to the inlet pipe and two second plugs respectively connected to the two air outlet pipes, wherein the two second plugs are both connected to the first plug, and an electromagnetic one-way valve is installed on the first plug.

[0008] As a preferred technical solution, the two outlet pipes have the same shape as the inlet pipe and are respectively attached to the upper and lower parts of the inlet pipe.

[0009] As a preferred technical solution, a pressure pump is installed on the air intake pipe.

[0010] As a preferred technical solution, a circulation pipe is installed between the water inlet pipe and the water outlet pipe, the circulation pipe is connected with both the water inlet pipe and the water outlet pipe, and a lifting pump is installed on the circulation pipe.

[0011] As a preferred technical solution, the liquid level of the ammonia water in the air outlet pipe is higher than the bottom pipe opening of the second inserting pipe.

[0012] As a preferred technical solution, a liquid level observation window is provided outside the two air outlet pipes, and the top of the liquid level observation window is higher than the ammonia water level.

[0013] As a preferred technical solution, a strip-shaped observation port is provided on the outer wall of the outer box body at the same height as the liquid level observation window, and a colorless transparent tempered glass is fixed in the strip-shaped observation port.

[0014] As a preferred technical solution, flanges are installed at one end of the air inlet pipe, the air outlet pipe, the water inlet pipe and the water outlet pipe located outside the outer box body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model further enhances the desulfurization effect by providing two outlet pipes and filling the outlet pipes with ammonia water. The design of the water inlet pipe and the water outlet pipe allows cold water to be filled in the outer box, and the heat of the high-temperature gas in the air inlet pipe is absorbed by the cold water to recover the heat. The design of the connecting pipe cleverly realizes the connection between the air inlet pipe and the two air outlet pipes, and at the same time controls the flow direction of the gas through the electromagnetic one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is one of the internal structure diagrams of the outer box in the utility model;

[0019] Figure 3 This is the second schematic diagram of the internal structure of the outer box of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the connecting pipe fitting in the utility model.

[0021] The meaning of each number in the figure is:

[0022] 1. Outer box; 2. Air inlet pipe; 20. Pressure pump; 3. Air outlet pipe; 4. Water inlet pipe; 5. Water outlet pipe; 6. Solenoid two-way valve; 7. Circulation pipe; 70. Lifting pump; 8. Connecting pipes; 80. First plug pipe; 81. Solenoid one-way valve; 82. Second plug pipe; 9. Liquid level observation window; 10. Strip observation port. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0025] The sulfuric acid tail gas treatment device based on ammonia desulfurization comprises an outer box 1, a serpentine air inlet pipe 2 is arranged in the outer box 1, one end of the air inlet pipe 2 extends to the outside of the outer box 1, and the other end is connected to two air outlet pipes 3 through a connecting pipe 8, the two air outlet pipes 3 are connected at one end away from the connecting pipe 8, and extend from the top of the outer box 1, the air outlet pipe 3 is filled with ammonia water, an inlet pipe 4 and an outlet pipe 5 are installed on the outer wall of one side of the outer box 1, and an electromagnetic two-way valve 6 is installed on the inlet pipe 4 and the outlet pipe 5, and the connecting pipe 8 comprises a first plug 80 connected with the air inlet pipe 2 and two second plugs 82 connected with the two air outlet pipes 3 respectively, the two second plugs 82 are connected with the first plug 80, and the first plug 80 is installed with an electromagnetic one-way valve 81. By setting the serpentine air inlet pipe 2, the flow path of the tail gas in the device is increased, thereby increasing the contact time and contact area between the tail gas and the ammonia water, and effectively improving the desulfurization effect. By providing two outlet pipes 3 and filling the outlet pipes 3 with ammonia water, the desulfurization effect is further enhanced. The design of the water inlet pipe 4 and the water outlet pipe 5 can fill the outer box 1 with cold water, and the cold water absorbs the heat of the high-temperature gas in the inlet pipe 2, so as to recover the heat. The design of the connecting pipe 8 cleverly realizes the connection between the inlet pipe 2 and the two outlet pipes 3, and controls the flow direction of the gas through the electromagnetic one-way valve 81.

[0026] As a preferred embodiment of the present invention, the two outlet pipes 3 are of the same shape as the inlet pipe 2 and are respectively attached to the upper and lower parts of the inlet pipe 2. This can effectively increase the contact time between the gas and the ammonia water, thereby effectively improving the desulfurization effect.

[0027] As a preferred embodiment of this embodiment, a booster pump 20 is installed on the intake pipe 2. The booster pump 20 installed on the intake pipe 2 can increase the speed and pressure of the tail gas entering the device, so that the tail gas can contact and react with the ammonia water more fully, thereby improving the desulfurization effect.

[0028] As a preferred embodiment of the present invention, a circulation pipe 7 is installed between the water inlet pipe 4 and the water outlet pipe 5, the circulation pipe 7 is connected to both the water inlet pipe 4 and the water outlet pipe 5, and a lifting pump 70 is installed on the circulation pipe 7. The circulation pipe 7 and the lifting pump 70 thereon can realize the cold water circulation between the water inlet pipe 4 and the water outlet pipe 5, and ensure that the cold water evenly absorbs the heat of the high-temperature gas in the air inlet pipe 2.

[0029] As a preferred embodiment of the present invention, the liquid level of the ammonia water in the outlet pipe 3 is higher than the bottom pipe opening of the second insert pipe 82. This ensures that the tail gas will inevitably contact with the ammonia water when passing through the outlet pipe 3, thereby ensuring the desulfurization effect.

[0030] As a preferred embodiment of the present invention, a liquid level observation window 9 is provided outside the two gas outlet pipes 3, and the top of the liquid level observation window 9 is higher than the liquid level of the ammonia water. The liquid level observation window 9 can conveniently observe the liquid level of the ammonia water, facilitate timely replenishment and adjustment of the amount of ammonia water, and ensure the continuity and stability of the desulfurization process.

[0031] As a preferred embodiment of the present invention, a strip-shaped observation port 10 is provided at the same height as the liquid level observation window 9 on the outer wall of the outer box 1, and a colorless transparent tempered glass is fixed inside the strip-shaped observation port 10. The design of the strip-shaped observation port 10 and the colorless transparent tempered glass enables the operator to visually observe the conditions inside the device, including the liquid level and color of the ammonia water and the treatment conditions of the tail gas, so as to facilitate timely discovery and treatment of problems.

[0032] As a preferred embodiment of the present invention, flanges are installed at one end of the air inlet pipe 2, the air outlet pipe 3, the water inlet pipe 4 and the water outlet pipe 5 located outside the outer box 1. Such a design facilitates the installation and removal of the device, and improves the flexibility and maintainability of the device. At the same time, the flange connection also ensures the sealing of the connection, preventing the leakage of gas and liquid.

[0033] When the sulfuric acid tail gas treatment device based on ammonia desulfurization of the utility model is used, first, the sulfuric acid tail gas enters the device through the serpentine intake pipe 2. The serpentine design of the intake pipe 2 increases the flow path of the tail gas, thereby increasing the contact time and contact area between the tail gas and the subsequent treatment medium. In order to further increase the speed and pressure of the tail gas entering the device, a booster pump 20 is also provided on the intake pipe 2 to ensure that the tail gas can more fully contact and react with the subsequent treatment medium.

[0034] Subsequently, the tail gas enters the two outlet pipes 3 through the connecting pipe 8. The two outlet pipes 3 are filled with ammonia water, and the tail gas reacts with the ammonia water when passing through the outlet pipes 3 to achieve desulfurization. Since the shape of the outlet pipe 3 is the same as that of the inlet pipe 2 and is close to the inlet pipe 2, this design further increases the contact time and area between the tail gas and the ammonia water, thereby improving the desulfurization efficiency and effect.

[0035] The device is also provided with a water inlet pipe 4 and a water outlet pipe 5 for filling cold water in the outer box 1. The cold water can absorb the heat of the high-temperature exhaust gas in the intake pipe 2 to achieve heat recovery. In order to maintain the circulation and uniform distribution of the cold water, a circulation pipe 7 and a lifting pump 70 are also provided between the water inlet pipe 4 and the water outlet pipe 5.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A sulfuric acid tail gas treatment device based on ammonia desulfurization comprises an outer box (1), characterized in that: The outer box (1) is provided with a serpentine air inlet pipe (2), one end of the air inlet pipe (2) extends to the outside of the outer box (1), and the other end is connected to two air outlet pipes (3) through a connecting pipe (8), the two air outlet pipes (3) are connected at one end away from the connecting pipe (8) and extend from the top of the outer box (1), the air outlet pipe (3) is filled with ammonia water, an inlet pipe (4) and an outlet pipe (5) are installed on the outer wall of one side of the outer box (1), and the inlet pipe (4) and the outlet pipe (5) are both installed with an electromagnetic two-way valve (6), the connecting pipe (8) comprises a first plug pipe (80) plug-connected to the air inlet pipe (2) and two second plug pipes (82) respectively connected to the two air outlet pipes (3), the two second plug pipes (82) are both connected to the first plug pipe (80), and the first plug pipe (80) is installed with an electromagnetic one-way valve (81).

2. The sulfuric acid tail gas treatment device based on ammonia desulfurization according to claim 1, characterized in that: The two air outlet pipes (3) have the same shape as the air inlet pipe (2), and are respectively attached to the upper and lower parts of the air inlet pipe (2).

3. The sulfuric acid tail gas treatment device based on ammonia desulfurization according to claim 2, characterized in that: A pressure pump (20) is installed on the air inlet pipe (2).

4. The sulfuric acid tail gas treatment device based on ammonia desulfurization as claimed in claim 3, characterized in that: A circulation pipe (7) is installed between the water inlet pipe (4) and the water outlet pipe (5); the circulation pipe (7) is in communication with both the water inlet pipe (4) and the water outlet pipe (5); and a lifting pump (70) is installed on the circulation pipe (7).

5. The sulfuric acid tail gas treatment device based on ammonia desulfurization as claimed in claim 4, characterized in that: The liquid level of the ammonia water in the gas outlet pipe (3) is higher than the bottom pipe opening of the second insert pipe (82).

6. The sulfuric acid tail gas treatment device based on ammonia desulfurization as claimed in claim 5, characterized in that: A liquid level observation window (9) is provided outside each of the two gas outlet pipes (3), and the top of the liquid level observation window (9) is higher than the liquid level of the ammonia solution.

7. The sulfuric acid tail gas treatment device based on ammonia desulfurization according to claim 6, characterized in that: A strip-shaped observation opening (10) is provided on the outer wall of the outer box body (1) at the same height as the liquid level observation window (9), and a colorless transparent tempered glass is fixed inside the strip-shaped observation opening (10).

8. The sulfuric acid tail gas treatment device based on ammonia desulfurization according to claim 7, characterized in that: The air inlet pipe (2), the air outlet pipe (3), the water inlet pipe (4) and the water outlet pipe (5) are all provided with flanges at one end located outside the outer box body (1).

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