A waste acid treatment device for titanium dioxide production

Abstract

This invention provides a waste acid treatment device for titanium dioxide production, belonging to the field of waste acid treatment technology. It includes a neutralization tank, within which a stirring mechanism is installed. A feeding mechanism is installed at the top of the neutralization tank for adding a neutralizing agent into the tank. A jacket is provided within the tank wall to hold the neutralizing agent. An overflow outlet is located at the top of the inner wall of the tank, communicating with the jacket. This invention, by setting a jacket within the neutralization tank wall and pre-filling it with neutralizing agent, allows the waste acid to flow into the jacket and react with the neutralizing agent when the waste acid and neutralizing agent react violently and overflow. The waste acid is then discharged through a waste pipe for secondary treatment, avoiding rapid overflow of waste acid that could cause environmental pollution and injury to workers, thus improving the safety performance of the device.

Description

Technical Field

[0001] This utility model relates to the field of waste acid treatment technology, and in particular to a waste acid treatment device for titanium dioxide production. Background Technology

[0002] The production of titanium dioxide generates a large amount of waste acid containing high concentrations of acidic substances and other harmful impurities. If discharged directly without effective treatment, this waste acid will severely pollute the soil, water bodies, and other ecological environments, disrupting the ecological balance and posing a potential threat to the health of nearby residents. Therefore, properly treating waste acid from titanium dioxide production is a critical issue that the titanium dioxide manufacturing industry must address.

[0003] Currently, there are various common methods for treating waste acid, among which neutralization is widely used due to its relatively simple operation and low cost. Traditional waste acid neutralization devices typically involve directly adding waste acid and a neutralizing agent into a reaction vessel and mixing them through stirring. However, in practical applications, this traditional device often produces large amounts of foam and gas during the reaction, leading to waste acid overflowing the reaction vessel. This overflow not only pollutes the surrounding environment but also poses a significant safety hazard, potentially causing chemical burns to operators. Therefore, this application provides a waste acid treatment device for titanium dioxide production to meet this need. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a waste acid treatment device for titanium dioxide production, so as to solve the problem of significant safety hazards in the existing waste acid neutralization treatment of titanium dioxide production.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A waste acid treatment device for titanium dioxide production includes a neutralization tank, a stirring mechanism installed inside the neutralization tank, and a feeding mechanism installed at the top of the neutralization tank for adding a neutralizing agent into the neutralization tank. The tank wall has an inner layer for holding the neutralizing agent, and an overflow outlet is provided at the top of the inner wall of the neutralization tank, which communicates with the inner layer.

[0006] Optionally, a waste discharge pipe is provided at the bottom of the outer wall of the neutralization tank, and the waste discharge pipe is connected to the interlayer.

[0007] Optionally, the top of the neutralizing tank wall extends outward to form a bucket-shaped structure at the top of the interlayer.

[0008] Optionally, a sealing plate is provided at the top of the wall of the neutralization tank, and the sealing plate is bolted to the neutralization tank.

[0009] Optionally, the sealing plate is provided with a feeding port, the feeding port is connected to the interlayer, and a cover plate is movably provided at the top of the feeding port.

[0010] Optionally, the stirring mechanism includes a first shaft, stirring blades, and a first motor. A first horizontal plate is horizontally fixed at the top of the neutralization tank. The first shaft is vertically rotatably mounted at the bottom of the first horizontal plate. The stirring blades are mounted at the bottom of the first shaft. The first motor is mounted at the top of the first horizontal plate. The output shaft of the first motor is connected to the top of the first shaft.

[0011] Optionally, the feeding mechanism includes a feeding tank, a support plate is fixed to the top of the inner wall of the neutralization tank, the feeding tank is fixed to the support plate, the bottom end of the feeding tank is set as a conical structure and penetrates through the support plate, and a discharge pipe is also connected to the bottom end of the feeding tank.

[0012] Optionally, a second horizontal plate is fixed horizontally at the top of the feeding tank, a second shaft is vertically and rotatably mounted at the bottom of the second horizontal plate, a spiral shaft extending into the discharge pipe is connected to the bottom end of the second shaft, a second motor is mounted at the top of the second horizontal plate, and the output shaft of the second motor is connected to the second shaft.

[0013] Optionally, the bottom of the neutralization tank is configured as a conical structure, and vertical columns are fixed at the four corners of the bottom of the neutralization tank.

[0014] Optionally, a bottom shell is provided at the bottom of the neutralization tank, and an end plate is detachably mounted on one end of the bottom shell.

[0015] Compared with the prior art, this utility model has at least the following beneficial effects: In the above scheme, by setting up a jacket in the wall of the neutralization tank and filling the jacket with neutralizing agent in advance, when the waste acid and neutralizing agent react violently in the neutralization tank and overflow, the waste acid can flow into the jacket to react with the neutralizing agent, and then be discharged through the waste discharge pipe for secondary treatment. This avoids the rapid overflow of waste acid causing environmental pollution and accidental injury to workers, and improves the safety performance of the device.

[0016] The neutralizing agent is slowly discharged via a spiral shaft through a feeding mechanism, allowing for precise control of the agent's addition rate and ensuring thorough contact and reaction between the neutralizing agent and the waste acid. Simultaneously, the stirring impeller of the agitator thoroughly stirs the waste acid and neutralizing agent within the neutralization tank, further promoting the reaction and improving efficiency. The conical bottom of the neutralization tank facilitates the centralized discharge of neutralization products. The entire device is compact and rationally designed, meeting the requirements for waste acid treatment in titanium dioxide production. Attached Figure Description

[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0018] Figure 1 A three-dimensional structural diagram of a waste acid treatment device used in titanium dioxide production. Figure 2 for Figure 1 Enlarged view of point A in the image; Figure 3 This is a schematic diagram of the internal structure of the neutralization tank wall; Figure 4 This is a schematic diagram of the stirring mechanism; Figure 5 This is a schematic diagram of the feeding mechanism.

[0019] Figure label: 1. Neutralization tank; 2. Stirring mechanism; 3. Feeding mechanism; 4. Column; 5. Waste discharge pipe; 6. Bottom shell; 7. End plate; 8. Sealing plate; 9. Feeding port; 10. Cover plate; 11. Overflow port; 12. Jacket; 13. First horizontal plate; 14. First shaft; 15. Stirring blade; 16. First motor; 17. Support plate; 18. Feeding tank; 19. Second horizontal plate; 20. Second shaft; 21. Second motor; 22. Discharge pipe; 23. Spiral shaft.

[0020] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0021] The waste acid treatment device for titanium dioxide production provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0022] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0023] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0024] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0025] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0026] like Figure 1 As shown, an embodiment of this utility model provides a waste acid treatment device for titanium dioxide production, including a neutralization tank 1. The neutralization tank 1 is made of fiberglass material resistant to acid and alkali corrosion, and its bottom is designed with a conical structure to facilitate the discharge of neutralization products. Vertical columns 4 are fixed at the four corners of the bottom of the neutralization tank 1 to support the entire device and ensure its stability. A bottom shell 6 is provided at the bottom of the neutralization tank 1, and an end plate 7 is detachably mounted on one end of the bottom shell 6. The end plate 7 is connected to the bottom shell 6 by bolts. After the waste acid in the neutralization tank 1 has been neutralized, the waste liquid is extracted from the top of the neutralization tank 1, and the end plate 7 is opened to discharge the neutralization products from the neutralization tank 1.

[0027] like Figure 1 and Figure 4 As shown, the neutralization tank 1 is equipped with a stirring mechanism 2, which includes a first shaft 14, a stirring blade 15, and a first motor 16. A first horizontal plate 13 is horizontally fixed at the top of the neutralization tank 1. The first shaft 14 is vertically rotatably mounted at the bottom of the first horizontal plate 13. The stirring blade 15 is mounted at the bottom end of the first shaft 14, and the first motor 16 is mounted at the top of the first horizontal plate 13. The output shaft of the first motor 16 is connected to the top end of the first shaft 14. When the first motor 16 starts, it drives the first shaft 14 to rotate, thereby causing the stirring blade 15 to fully stir the waste acid and neutralizing agent in the neutralization tank 1, promoting the reaction.

[0028] like Figure 1 and Figure 5 As shown, a feeding mechanism 3 is assembled on the top of the neutralization tank 1. The feeding mechanism 3 includes a feeding tank 18. A support plate 17 is fixed to the top of the inner side wall of the neutralization tank 1, and the feeding tank 18 is fixed on the support plate 17. The bottom end of the feeding tank 18 is set as a conical structure and penetrates through the support plate 17. A discharge pipe 22 is also connected to the bottom end of the feeding tank 18. A second horizontal plate 19 is horizontally fixed to the top of the feeding tank 18. A second shaft 20 is vertically and rotatably mounted on the bottom of the second horizontal plate 19. A spiral shaft 23 extending into the discharge pipe 22 is connected to the bottom end of the second shaft 20. A second motor 21 is mounted on the top of the second horizontal plate 19, and the output shaft of the second motor 21 is connected to the second shaft 20. During operation, neutralizing agents such as limestone are added to the feeding tank 18, the second motor 21 is started, which drives the second shaft 20 and the screw shaft 23 to rotate. The screw shaft 23 slowly discharges the neutralizing agent from the discharge pipe 22 and slowly feeds it into the neutralization tank 1 to achieve the neutralization treatment of waste acid.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the neutralization tank 1 has an inner layer 12 for holding neutralizing agent. An overflow outlet 11 is located at the top of the inner wall of the neutralization tank 1, communicating with the inner layer 12. A waste discharge pipe 5 is located at the bottom of the outer wall of the neutralization tank 1, communicating with the inner layer 12. The top of the neutralization tank 1 extends outwards, forming a funnel-shaped structure at the top of the inner layer 12 for easy addition of neutralizing agent. A sealing plate 8 is located at the top of the neutralization tank 1, bolted to the neutralization tank 1 for easy disassembly and installation. A feeding port 9 is located on the sealing plate 8, communicating with the inner layer 12. A cover plate 10 is movably placed on the top of the feeding port 9. When neutralizing agent needs to be added to the inner layer 12, the cover plate 10 is opened, and the agent is added through the feeding port 9.

[0030] The working principle of the technical solution provided by this utility model is as follows: In actual use, waste acid is first added to neutralization tank 1, and then neutralizing agents such as limestone are added to feeding tank 18. The second motor 21 is started, driving the screw shaft 23 to rotate, causing the neutralizing agent to be slowly discharged into neutralization tank 1 through discharge pipe 22 for neutralization of the waste acid. Simultaneously, the first motor 16 is started, driving the stirring blades 15 to rotate, thoroughly stirring the waste acid and neutralizing agent in neutralization tank 1 to promote uniform reaction.

[0031] A certain amount of neutralizing agent is pre-filled into the jacket 12 through the feed port 9. When the waste acid and neutralizing agent react violently in the neutralization tank 1 and overflow occurs, the waste acid will flow into the jacket 12 through the overflow port 11 and react with the neutralizing agent in the jacket 12. The waste liquid after the reaction is discharged through the waste discharge pipe 5. In this process, there is no need to wait for the neutralization product to settle, and the waste liquid can be quickly discharged and centrally carried out for secondary neutralization treatment, avoiding the environmental pollution and accidental injury to personnel caused by the violent and rapid overflow of the neutralizing agent and waste acid in the neutralization tank 1.

[0032] After the waste acid in the neutralization tank 1 is neutralized, the waste liquid is extracted from the top of the neutralization tank 1, and the end plate 7 at the end of the bottom shell 6 is opened to discharge the neutralization product in the neutralization tank 1.

[0033] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A waste acid treatment device for titanium dioxide production, comprising a neutralization tank (1), characterized in that: The neutralization tank (1) is equipped with a stirring mechanism (2), and the top of the neutralization tank (1) is equipped with a feeding mechanism (3). The feeding mechanism (3) is used to add neutralizing agent into the neutralization tank (1). The neutralization tank (1) has an inner layer (12) for holding the neutralizing agent. An overflow outlet (11) is provided at the top of the inner side wall of the neutralization tank (1), and the overflow outlet (11) is connected to the inner layer (12).

2. The waste acid treatment device for titanium dioxide production according to claim 1, characterized in that, The bottom of the outer wall of the neutralization tank (1) is provided with a waste discharge pipe (5), which is connected to the interlayer (12).

3. The waste acid treatment device for titanium dioxide production according to claim 1, characterized in that, The top of the wall of the neutralizing tank (1) extends outward to form a bucket-shaped structure at the top of the interlayer (12).

4. The waste acid treatment device for titanium dioxide production according to claim 1, characterized in that, The top of the wall of the neutralization tank (1) is provided with a sealing plate (8), which is bolted to the neutralization tank (1).

5. The waste acid treatment device for titanium dioxide production according to claim 4, characterized in that, The sealing plate (8) is provided with a feeding port (9), which is connected to the interlayer (12), and the top of the feeding port (9) is movably covered with a cover plate (10).

6. The waste acid treatment device for titanium dioxide production according to claim 1, characterized in that, The stirring mechanism (2) includes a first shaft (14), a stirring blade (15), and a first motor (16). A first horizontal plate (13) is fixed horizontally at the top of the neutralization tank (1). The first shaft (14) is vertically rotated and installed at the bottom of the first horizontal plate (13). The stirring blade (15) is installed at the bottom of the first shaft (14). The first motor (16) is installed at the top of the first horizontal plate (13). The output shaft of the first motor (16) is connected to the top of the first shaft (14).

7. The waste acid treatment device for titanium dioxide production according to claim 1, characterized in that, The feeding mechanism (3) includes a feeding tank (18), a support plate (17) is fixed on the top of the inner side wall of the neutralization tank (1), the feeding tank (18) is fixed on the support plate (17), the bottom end of the feeding tank (18) is set as a conical structure and penetrates the support plate (17), and the bottom end of the feeding tank (18) is also connected to a discharge pipe (22).

8. The waste acid treatment device for titanium dioxide production according to claim 7, characterized in that, The top of the feeding tank (18) is horizontally fixed with a second horizontal plate (19), and the bottom of the second horizontal plate (19) is vertically rotatably mounted with a second shaft (20). The bottom end of the second shaft (20) is connected to a spiral shaft (23) that extends into the discharge pipe (22). The top of the second horizontal plate (19) is mounted with a second motor (21), and the output shaft of the second motor (21) is connected to the second shaft (20).

9. The waste acid treatment device for titanium dioxide production according to claim 1, characterized in that, The bottom of the neutralization tank (1) is set as a conical structure, and the four corners of the bottom of the neutralization tank (1) are vertically fixed with columns (4).

10. The waste acid treatment device for titanium dioxide production according to claim 9, characterized in that, The bottom of the neutralization tank (1) is provided with a bottom shell (6), and an end plate (7) is detachably mounted on one end of the bottom shell (6).

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