A hydrogen fluoride gas pre-purification tower

Abstract

This utility model relates to the field of hydrogen fluoride purification technology, and proposes a hydrogen fluoride gas pre-purification tower, including a support column and a frustum mounted on the support column. Under the action of a fan, the hydrogen fluoride gas continuously flows upward, constantly blowing onto the outer surface of the long plate, contacting the alumina inside the rotating cylinder. Due to the arrangement of the rotating cylinder and the long plate, the contact time between hydrogen fluoride and alumina is extended to a certain extent, thereby promoting the adsorption effect. Simultaneously, during the rotation of the rotating cylinder, the rectangular shape of the left end of the placement cylinder allows it to rotate along with the rotating cylinder, continuously agitating the alumina inside, ensuring that the buried alumina also comes into contact with the hydrogen fluoride, resulting in a better purification effect.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen fluoride purification technology, specifically a hydrogen fluoride gas pre-purification tower. Background Technology

[0002] Hydrogen fluoride is a common and harmful gas in industrial production, possessing strong corrosiveness and toxicity, posing serious threats to the environment and human health. Therefore, the purification of hydrogen fluoride is crucial. Traditional purification methods primarily utilize alumina (Al₂O₃) as an adsorbent, leveraging its excellent adsorption properties to remove hydrogen fluoride. However, traditional methods have some shortcomings, such as insufficient contact between alumina and hydrogen fluoride, resulting in low purification efficiency and difficulty in meeting stringent environmental protection requirements. Utility Model Content

[0003] Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a hydrogen fluoride gas pre-purification tower to solve the problem of insufficient contact between alumina and hydrogen fluoride gas, resulting in low purification efficiency.

[0005] Technical solution

[0006] To achieve the above-mentioned objective, this utility model provides the following technical solution: a hydrogen fluoride gas pre-purification tower, comprising a support column and a frustum mounted on the support column, and a tower column mounted on the frustum. A rotating cylinder is movably installed in the middle of the tower column, a long plate is provided on the rotating cylinder, a square is provided at the left end inside the rotating cylinder, a placement cylinder is installed inside the square, and holes are provided on the rotating cylinder.

[0007] Furthermore, the right end of the placement cylinder is threaded with a cap, and the cap is provided with a handle.

[0008] Furthermore, a fan is installed inside the truncated cone.

[0009] Furthermore, three No. 2 mesh plates are installed at the bottom of the tower column, and the three No. 2 mesh plates are the same size.

[0010] Furthermore, two blocks are provided at the top of the interior of the tower column, and the two blocks have a certain range.

[0011] Furthermore, a tower end is installed on the tower column, and the internal channel of the tower end is smaller than the internal channel of the tower column.

[0012] Furthermore, a mesh plate is provided at the upper part of the tower end, and a shielding plate is installed at the top of the tower end.

[0013] Beneficial effects

[0014] Compared with the prior art, this utility model provides a hydrogen fluoride gas pre-purification tower, which has the following beneficial effects:

[0015] 1. Under the action of the fan, hydrogen fluoride gas will continuously flow upward, and the hydrogen fluoride gas will be continuously blown onto the outer surface of the long plate, contacting the alumina inside the rotating cylinder. Due to the design of the rotating cylinder and the long plate, the contact time between hydrogen fluoride and alumina is extended to a certain extent, thereby promoting the adsorption effect. At the same time, during the rotation of the rotating cylinder, since the left end of the placement cylinder is rectangular, this design allows the placement cylinder to rotate with the rotating cylinder, thereby continuously turning the alumina inside the placement cylinder, so that the alumina buried inside can also come into contact with hydrogen fluoride, resulting in a better purification effect.

[0016] 2. The three No. 2 mesh plates at the bottom of the tower column perform preliminary filtration and adsorption of hydrogen fluoride gas, providing support for subsequent purification processes. No. 1 mesh plate re-adsorption: The No. 1 mesh plate inside the tower re-adsorbs the purified gas, ensuring that the hydrogen fluoride content in the discharged gas is extremely low, meeting environmental protection requirements. Environmental friendliness and economy: No wastewater generation: Using alumina as the adsorbent, no wastewater is generated during the purification process, avoiding secondary pollution. Simple operation: Alumina filling and replacement are convenient; operators can operate directly inside the placement cylinder, and the sealed design ensures safe and convenient operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the structure on the right side of this utility model;

[0019] Figure 3 This is a cross-sectional view of the left side of the present invention;

[0020] Figure 4 This utility model Figure 2 A magnified schematic diagram of the local structure at point A;

[0021] Figure 5 This utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0022] The attached figures are labeled as follows:

[0023] 1. Support column; 2. Frustum; 3. Tower column; 4. Rotating cylinder; 5. Long plate; 7. Hole; 8. Stop block; 9. Tower end; 10. No. 1 mesh plate; 11. Baffle plate; 13. Fan; 14. No. 2 mesh plate; 15. Placement cylinder; 16. Cover; 17. Cube. Detailed Implementation

[0024] To more clearly illustrate the overall concept of this utility model, a detailed description is provided below with reference to the accompanying drawings.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

[0029] Please see Figures 1-5This utility model proposes a hydrogen fluoride gas pre-purification tower, including a support column 1. In use, a frustum 2 is installed at the top of the support column 1. The support column 1 provides support for the entire purification tower device. At the same time, a fan 13 is installed in the middle of the frustum 2. The fan 13 can draw hydrogen fluoride gas and transport it into the interior of the purification tower for purification.

[0030] Next, a tower column 3 is fixedly installed at the top of the truncated cone 2. Three No. 2 mesh plates 14 are evenly arranged at the bottom inside the tower column 3. The arrangement of the three No. 2 mesh plates 14 can perform preliminary filtration and adsorption of hydrogen fluoride, thereby promoting subsequent purification and allowing the hydrogen fluoride gas to be purified before being discharged, reducing environmental pollution.

[0031] Currently, in the purification process of hydrogen fluoride gas, a hydrogen fluoride neutralizing agent is used for purification, and alumina is used for adsorption. Alumina (Al2O3) is used as the adsorbent to adsorb hydrogen fluoride gas, which has high purification efficiency and no wastewater generation. This is the advantage of alumina (Al2O3). However, the contact between hydrogen fluoride gas and alumina is insufficient, which affects the purification efficiency. To solve this problem, a rotating cylinder 4 is movably installed inside the column 3. Long plates 5 are evenly installed on the rotating cylinder 4. At the same time, the interior of the rotating cylinder 4 is set to a hollow state. A square 17 is set at the left end of the rotating cylinder 4, and a placement cylinder 15 is movably installed inside the square 17. The left end of the placement cylinder 15 is rectangular.

[0032] As the hydrogen fluoride gas flows upward under the action of the fan 13, it will continuously blow onto the outer surface of the long plate 5 and come into contact with the alumina inside the rotating cylinder 4. Due to the arrangement of the rotating cylinder 4 and the long plate 5, the contact time between the hydrogen fluoride and the alumina is extended to a certain extent, thereby promoting the adsorption effect. At the same time, as the rotating cylinder 4 rotates, the left end of the placement cylinder 15 is rectangular, which allows the placement cylinder 15 to rotate with the rotating cylinder 4, thereby continuously turning over the alumina inside the placement cylinder 15, so that the alumina buried inside can also come into contact with the hydrogen fluoride.

[0033] The other end of the placement cylinder 15 extends to the outside of the column 3. At this time, the operator fills the inside of the placement cylinder 15 with alumina. The alumina inside the placement cylinder 15 has a certain space and is not tightly packed, which can promote the adsorption of hydrogen fluoride by the alumina. Then, a cap 16 is movably sleeved on the right end of the placement cylinder 15. The cap 16 plays a sealing role for the placement cylinder 15.

[0034] Furthermore, the rotating cylinder 4 has multiple holes 7, and the placement cylinder 15 also has multiple holes 7, which increases the contact between alumina and hydrogen fluoride gas, resulting in better purification. Inside the column 3, baffles 8 are installed on both sides of the top. The shape of the baffles 8 has a certain amplitude, which narrows the upper opening inside the column 3, extending the residence time of hydrogen fluoride inside the column 3, allowing for further adsorption. The gas produced after adsorption will continue to flow upwards. At this point, a column end 9 is installed on the column 3, and a first mesh plate 10 is installed inside the column end 9. The gas will pass through the first mesh plate 10 again to adsorb any remaining small amount of unadsorbed hydrogen fluoride gas, and finally discharge it to the outside. A baffle plate 11 is installed at the top of the column end 9, which provides some shielding and protects the top of the column end 9.

[0035] Under the action of the fan, hydrogen fluoride gas will continuously flow upward, blowing onto the outer surface of the long plate and contacting the alumina inside the rotating cylinder. Due to the design of the rotating cylinder and the long plate, the contact time between hydrogen fluoride and alumina is extended to a certain extent, thereby promoting the adsorption effect. At the same time, as the rotating cylinder rotates, the rectangular left end of the placement cylinder allows it to rotate with the rotating cylinder, continuously agitating the alumina inside. This ensures that the alumina buried inside can also come into contact with hydrogen fluoride, resulting in a better purification effect.

[0036] Three No. 2 mesh plates at the bottom of the tower column perform preliminary filtration and adsorption of hydrogen fluoride gas, providing support for subsequent purification processes. No. 1 mesh plate re-adsorption: The No. 1 mesh plate inside the tower re-adsorbs the purified gas, ensuring that the hydrogen fluoride content in the discharged gas is extremely low, meeting environmental protection requirements. Environmental friendliness and economy: No wastewater generation: Using alumina as the adsorbent, no wastewater is generated during the purification process, avoiding secondary pollution. Simple operation: Alumina filling and replacement are convenient; operators can operate directly inside the placement cylinder, and the sealed design ensures safe and convenient operation.

[0037] 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 hydrogen fluoride gas pre-purification tower, comprising a support column (1) and a frustum (2) mounted on the support column (1), and a tower column (3) mounted on the frustum (2), characterized in that: A rotating cylinder (4) is movably installed in the middle of the tower column (3). A long plate (5) is provided on the rotating cylinder (4). A block (17) is provided at the left end inside the rotating cylinder (4). A placement cylinder (15) is installed inside the block (17). A hole (7) is opened on the rotating cylinder (4).

2. The hydrogen fluoride gas pre-purification tower according to claim 1, characterized in that: The right end of the placement cylinder (15) is threaded with a cap (16), and a handle is provided on the cap (16).

3. The hydrogen fluoride gas pre-purification tower according to claim 1, characterized in that: A fan (13) is installed inside the truncated cone (2).

4. The hydrogen fluoride gas pre-purification tower according to claim 1, characterized in that: The bottom of the tower column (3) is equipped with three No. 2 mesh plates (14), and the three No. 2 mesh plates (14) are the same size.

5. A hydrogen fluoride gas pre-purification tower according to claim 1, characterized in that: The top of the tower column (3) is provided with two blocks (8), and the two blocks (8) have a certain range.

6. The hydrogen fluoride gas pre-purification tower according to claim 1, characterized in that: A tower end (9) is installed on the tower column (3), and the internal channel of the tower end (9) is smaller than the internal channel of the tower column (3).

7. A hydrogen fluoride gas pre-purification tower according to claim 6, characterized in that: A mesh plate (10) is provided at the upper end inside the tower end (9), and a shielding plate (11) is installed at the top of the tower end (9).

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