Device for realizing low emission of sulfur dioxide and acid mist in sulfuric acid production process

Abstract

The utility model relates to the technical field of sulfur dioxide acid mist treatment devices, in particular to a device for realizing low emission of sulfur dioxide and acid mist in a sulfuric acid production process, which comprises a spray tower, an air inlet barrel arranged outside the spray tower, a fan fixedly mounted on the inner wall of the air inlet barrel, a conical barrel fixedly mounted at the end part of the air inlet barrel, and an air outlet barrel fixedly mounted at the end part of the conical barrel, a uniform distribution disc is fixedly installed at the tail end of the conveying pipe, and a plurality of air outlet holes are formed in the bottom wall and the top wall of the ventilation cavity. An upper conical cover and a lower conical cover are fixedly installed on the inner wall of the spraying tower, a filter screen is fixedly installed on the inner wall of the bottom end of each conical cover, a booster pump is arranged on one side of the spraying tower, an anti-corrosion pipe is fixedly installed at the water outlet end of the booster pump, a horizontal pipe and a thin pipe are fixedly installed on the anti-corrosion pipe, and a plurality of spraying nozzles are fixedly installed at the bottom end of the horizontal pipe. And an atomizing nozzle is fixedly mounted at the tail end of the thin pipe. The sulfur dioxide and acid mist treatment device has a good spraying treatment effect and is beneficial to full treatment operation of sulfur dioxide and acid mist.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfur dioxide acid mist treatment devices, and specifically to a device applied to the sulfuric acid production process to achieve low emissions of sulfur dioxide and acid mist. Background Technique

[0002] In the sulfuric acid production process, especially in the production of sulfuric acid from sulfur, the production of liquid sulfur dioxide, and the process of extracting metals from ore fines through acidification roasting, the emissions of sulfur dioxide and acid mist have always been a key concern in the environmental protection field. These emissions not only cause serious pollution to the environment but also pose a threat to human health. To reduce environmental pollution, the emitted sulfur dioxide and acid mist are usually treated, and corresponding treatment devices are commonly used during the treatment operation.

[0003] Due to the water-soluble characteristics of sulfur dioxide and acid mist, common sulfur dioxide and acid mist devices on the market include spray scrubbers, etc. Such spray scrubbers transport waste gas through pipelines and then cooperate with the spray system for spraying operations. However, such spray scrubbers generally directly transport the waste gas to the corresponding position inside the scrubber through pipelines with a relatively large inner diameter for treatment operations, having the defect that the waste gas cannot be evenly distributed and transported inside the spray scrubber. At the same time, the spray system cannot achieve multi-layer spraying operations, which will affect the treatment effect of sulfur dioxide and acid mist and bring inconvenience to users. In view of this, we have proposed a device applied to the sulfuric acid production process to achieve low emissions of sulfur dioxide and acid mist. Content of the Utility Model

[0004] The purpose of the present utility model is to provide a device applied to the sulfuric acid production process to achieve low emissions of sulfur dioxide and acid mist, so as to solve the defects mentioned in the above background technique.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions:

[0006] A device applied to the sulfuric acid production process to achieve low emissions of sulfur dioxide and acid mist, including a spray tower. An air inlet cylinder is arranged outside the spray tower. A fan is fixedly installed on the inner wall of the air inlet cylinder. A conical cylinder is fixedly installed at the end of the air inlet cylinder. A conveying pipe is fixedly installed at the end of the conical cylinder. A uniform distribution plate is fixedly installed at the end of the conveying pipe. The uniform distribution plate is located inside the spray tower. An air vent chamber is arranged inside the uniform distribution plate. A plurality of air outlet holes communicating with the outside are arranged on both the bottom wall and the top wall of the air vent chamber. Two symmetrically arranged conical covers are fixedly installed on the inner wall of the spray tower from top to bottom. A filter screen is fixedly installed on the inner bottom wall of the conical cover. A booster pump is arranged on one side of the spray tower. The water outlet end of the booster pump is fixedly installed with an anti-corrosion pipe. A plurality of horizontally arranged pipes arranged at equal intervals and a plurality of thin pipes arranged at equal intervals are fixedly installed on the anti-corrosion pipe. The bottom end of the horizontally arranged pipe is fixedly installed with a plurality of spray nozzles arranged at equal intervals. The end of the thin pipe is fixedly installed with an atomizing nozzle.

[0007] Preferably, the cross-section of the conveying pipe is L-shaped, and the vertical section of the conveying pipe is arranged vertically downward.

[0008] Preferably, a suction pipe is fixedly installed at the suction end of the booster pump, and the inner diameter of the suction pipe is equal to the inner diameter of the anti-corrosion pipe.

[0009] Preferably, a base is fixedly installed at the bottom of the spray tower, and the outer diameter of the base is larger than the outer diameter of the spray tower.

[0010] Preferably, a discharge pipe is fixedly installed on the top cylinder of the spray tower, and the inner diameter of the discharge pipe is 10 cm to 30 cm.

[0011] Preferably, an observation cylinder is fixedly installed on the cylinder of the spray tower. A cover plate is fixedly installed at the end of the observation cylinder through a plurality of fastening bolts, and a transparent plate is fixedly installed on the cover plate.

[0012] Preferably, a sewage discharge pipe is fixedly installed on the bottom cylinder of the spray tower, and a valve is fixedly installed on the sewage discharge pipe.

[0013] Preferably, a base material belt is fixedly installed on the inner wall of the spray tower. The base material belt is located between the two conical covers up and down. The conical cover is located between two adjacent horizontally arranged pipes. The atomizing nozzle is located above the corresponding filter screen.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model realizes the conveying operation of waste gas through the arranged air inlet cylinder and fan. Additionally, through the arranged uniform distribution plate and air outlet holes, the waste gas can be discharged from multiple air outlet hole positions into the spray tower more evenly. Then, the treatment liquid is conveyed to the spray nozzles and atomizing nozzles by a booster pump and sprayed out to realize multi-layer spray treatment operation, improve the treatment effect of waste gas, ensure more thorough treatment of waste gas, and achieve a more complete treatment effect of waste gas, which is beneficial to the treatment operation of sulfur dioxide and acid mist in the sulfuric acid production process.

[0016] 2. Through the arranged filter screen and base material belt, after the filter screen and base material belt are wetted, the treatment liquid on the filter screen and base material belt can contact the waste gas more fully, improving the treatment effect. And through the arranged sewage discharge pipe and valve, it is convenient to carry out sewage discharge operation. Brief Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the utility model;

[0018] Figure 2 is the exploded structural schematic diagram of the utility model;

[0019] Figure 3 is one of the cross-sectional views of the spray tower of the utility model;

[0020] Figure 4 is the other cross-sectional view of the spray tower of the utility model;

[0021] Figure 5 is the cross-sectional view of the uniform distribution plate of the utility model.

[0022] The meanings of each label in the figure are as follows:

[0023] 1. Spray tower; 10. Base; 11. Discharge pipe; 12. Observation cylinder; 13. Cover plate; 131. Transparent plate; 14. Conical cover; 141. Filter screen; 15. Base material belt; 16. Sewage discharge pipe; 161. Valve;

[0024] 2. Air inlet cylinder; 20. Fan; 21. Conical cylinder; 22. Delivery pipe; 23. Uniform distribution plate; 231. Ventilation chamber; 24. Air outlet holes;

[0025] 3. Booster pump; 30. Suction pipe; 31. Anticorrosive pipe; 32. Horizontal pipe; 33. Spray nozzle; 34. Thin pipe; 35. Atomizing nozzle. Detailed Embodiment

[0026] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1 - 5 , the present utility model provides a technical solution: a device for realizing low emissions of sulfur dioxide and acid mist during the sulfuric acid production process, including a spray tower 1. An air inlet cylinder 2 is arranged outside the spray tower 1. A blower 20 is fixedly installed on the inner wall of the air inlet cylinder 2. A conical cylinder 21 is fixedly installed at the end of the air inlet cylinder 2. A delivery pipe 22 is fixedly installed at the end of the conical cylinder 21. A distribution plate 23 is fixedly installed at the end of the delivery pipe 22. The distribution plate 23 is located inside the spray tower 1. An air vent chamber 231 is arranged inside the distribution plate 23. A plurality of air outlet holes 24 communicating with the outside are arranged on both the bottom wall and the top wall of the air vent chamber 231, so that the sulfur dioxide and acid mist waste gas can be more fully dispersed to each part inside the spray tower 1 along the air outlet holes 24;

[0028] Specifically, two symmetrically arranged conical covers 14 are fixedly installed on the inner wall of the spray tower 1 from top to bottom. A filter screen 141 is fixedly installed on the inner wall at the bottom end of the conical cover 14. A booster pump 3 is arranged on one side of the spray tower 1. An anti-corrosion pipe 31 is fixedly installed at the water outlet end of the booster pump 3. A plurality of horizontally arranged pipes 32 arranged at equal intervals and a plurality of thin pipes 34 arranged at equal intervals are fixedly installed on the anti-corrosion pipe 31. A plurality of spray nozzles 33 arranged at equal intervals are fixedly installed at the bottom end of the horizontally arranged pipe 32. An atomizing nozzle 35 is fixedly installed at the end of the thin pipe 34, realizing multi-layer spraying treatment operations using the spray nozzles 33 and the atomizing nozzles 35, and ensuring better treatment effects on sulfur dioxide and acid mist.

[0029] In this embodiment, the cross-section of the delivery pipe 22 is in an L shape, and the vertical section of the delivery pipe 22 is arranged vertically downward to prevent the liquid medicine from flowing back into the delivery pipe 22.

[0030] Specifically, a suction pipe 30 is fixedly installed at the suction end of the booster pump 3. The inner diameter of the suction pipe 30 is equal to the inner diameter of the anti-corrosion pipe 31, realizing the suction operation of the liquid medicine.

[0031] Furthermore, a base 10 is fixedly installed at the bottom of the spray tower 1. The outer diameter of the base 10 is larger than the outer diameter of the spray tower 1, facilitating stable support operations using the base 10.

[0032] In addition, a discharge pipe 11 is fixedly installed on the top cylinder of the spray tower 1. The inner diameter of the discharge pipe 11 is 10 cm to 30 cm, enabling the treated air to be discharged outward along the discharge pipe 11.

[0033] It should be noted that an observation cylinder 12 is fixedly installed on the cylinder body of the spray tower 1. The end of the observation cylinder 12 is fixedly installed with a cover plate 13 through a plurality of fastening bolts. A transparent plate 131 is fixedly installed on the cover plate 13. The transparent plate 131 is made of a transparent material, which is convenient for observation operations.

[0034] It is worth noting that a sewage discharge pipe 16 is fixedly installed on the bottom cylinder body of the spray tower 1. A valve 161 is fixedly installed on the sewage discharge pipe 16, which is convenient for opening the valve 161 to perform sewage discharge operations at the sewage discharge pipe 16.

[0035] In this embodiment, a base material belt 15 is fixedly installed on the inner wall of the spray tower 1. The base material belt 15 is located between the upper and lower conical covers 14. The conical covers 14 are located between two adjacent horizontal pipes 32. The atomizing nozzles 35 are located above the corresponding filter meshes 141. After the base material belt 15 and the filter meshes 141 are wetted, the liquid medicine on the base material belt 15 and the filter meshes 141 can perform treatment operations on the waste gas, making the contact and reaction with the waste gas more sufficient.

[0036] When the device for realizing low emission of sulfur dioxide and acid mist in the sulfuric acid production process of the present utility model is in use, the air inlet cylinder 2 is connected to an external waste gas inlet pipeline. As the waste gas enters along the air inlet cylinder 2, the fan 20 is connected to an external power source and made to work. When the fan 20 works, the waste gas is transported and blown out from the air outlet holes 24, so that the waste gas is dispersed to each part in the spray tower 1. The suction pipe 30 is connected to an external liquid medicine pipeline. As the booster pump 3 works, the liquid medicine is transported and sprayed out from the spray nozzles 33 and the atomizing nozzles 35, so as to perform spray treatment operations on sulfur dioxide and acid mist. The waste liquid from the spray treatment is discharged outwards along the sewage discharge pipe 16 for subsequent treatment.

[0037] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model, and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for achieving low emission of sulfur dioxide and acid mist in a sulfuric acid production process, comprising a spray tower (1), characterized in that: The spray tower (1) is provided with an air inlet cylinder (2) on the outside, a fan (20) is fixedly mounted on the inner wall of the air inlet cylinder (2), a conical cylinder (21) is fixedly mounted on the end of the air inlet cylinder (2), a delivery pipe (22) is fixedly mounted on the end of the conical cylinder (21), a uniform distribution plate (23) is fixedly mounted on the end of the delivery pipe (22), the uniform distribution plate (23) is located in the spray tower (1), a ventilation chamber (231) is arranged in the uniform distribution plate (23), and a plurality of air outlet holes (24) connected to the outside are arranged on the bottom wall and the top wall of the ventilation chamber (231); the spray tower ( 1) are fixedly mounted on the inner wall of the spray tower (1), two mutually symmetrical conical covers (14) are fixedly mounted on the bottom inner wall of the conical cover (14), a filter screen (141) is fixedly mounted on the bottom inner wall of the conical cover (14), a booster pump (3) is arranged on one side of the spray tower (1), an anti-corrosion pipe (31) is fixedly mounted on the water outlet end of the booster pump (3), a plurality of equally spaced horizontal pipes (32) and a plurality of equally spaced thin pipes (34) are fixedly mounted on the anti-corrosion pipe (31), a plurality of equally spaced spray nozzles (33) are fixedly mounted on the bottom end of the horizontal pipe (32), and an atomizing nozzle (35) is fixedly mounted on the end of the thin pipe (34).

2. The device for achieving low emission of sulfur dioxide and acid mist in sulfuric acid production according to claim 1, characterized in that: The cross section of the delivery pipe (22) is L-shaped, and the vertical section of the delivery pipe (22) is arranged vertically downward.

3. The device for achieving low emission of sulfur dioxide and acid mist in sulfuric acid production according to claim 1, characterized in that: A suction pipe (30) is fixedly mounted on the suction end of the booster pump (3), and the inner diameter of the suction pipe (30) is equal to the inner diameter of the anti-corrosion pipe (31).

4. The device for achieving low emission of sulfur dioxide and acid mist in sulfuric acid production according to claim 1, characterized in that: A base (10) is fixedly mounted on the bottom of the spray tower (1), and the outer diameter of the base (10) is greater than the outer diameter of the spray tower (1).

5. The device for achieving low emission of sulfur dioxide and acid mist in sulfuric acid production according to claim 1, characterized in that: A discharge pipe (11) is fixedly mounted on the top cylinder of the spray tower (1), and the inner diameter of the discharge pipe (11) is 10 cm to 30 cm.

6. The device for achieving low emission of sulfur dioxide and acid mist in sulfuric acid production according to claim 1, characterized in that: An observation tube (12) is fixedly mounted on the cylinder body of the spray tower (1), a cover plate (13) is fixedly mounted on the end of the observation tube (12) via a plurality of fastening bolts, and a transparent plate (131) is fixedly mounted on the cover plate (13).

7. The device for achieving low emission of sulfur dioxide and acid mist in sulfuric acid production according to claim 1, characterized in that: A sewage pipe (16) is fixedly mounted on the bottom cylinder of the spray tower (1), and a valve (161) is fixedly mounted on the sewage pipe (16).

8. The device for achieving low emission of sulfur dioxide and acid mist in sulfuric acid production according to claim 1, characterized in that: A base material belt (15) is fixedly mounted on the inner wall of the spray tower (1), the base material belt (15) is located between the upper and lower conical covers (14), the conical cover (14) is located between two adjacent horizontal tubes (32), and the atomizing nozzle (35) is located above the corresponding filter screen (141).

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