Phosphoric acid extraction device

Abstract

The utility model belongs to the field of phosphoric acid extraction, and particularly relates to a phosphoric acid extraction device which comprises a stirring tank, the top of the stirring tank is fixedly connected with a gas collection top cover, an inner cavity of the gas collection top cover is fixedly communicated with a first conveying pipe, one end of the first conveying pipe is fixedly connected with cooling equipment, and the other end of the first conveying pipe is fixedly connected with a second conveying pipe. And a fan is fixedly installed on one side of the cooling equipment, the output end of the fan fixedly communicates with a second conveying pipe, and a purification mechanism is arranged at one end of the second conveying pipe. According to the utility model, large-particle impurities in air are filtered through the particle filter plate, acidic substances in waste gas are filtered through the acidic filter plate, harmful microorganisms and peculiar smell in the waste gas are removed through the activated carbon plate, and finally the filtered gas is exhausted through the smoke exhaust pipe. The effects of integrating waste gas cooling, filtering, deacidification and spraying and improving the waste gas treatment efficiency in the phosphoric acid extraction process are achieved.

Description

Technical Field

[0001] This utility model relates to the field of phosphoric acid extraction, specifically a phosphoric acid extraction device. Background Technology

[0002] The basic principle of extraction is to separate substances based on the difference in solubility of substances in solvents. When two immiscible solvents are mixed, they will spontaneously separate into two layers. If one of the solvents (called the extractant) has a strong solubility for a certain component (called the solute) in the mixture, then that component will be transferred from the other solvent (called the original solvent) to the extractant, thus achieving separation. Phosphoric acid extraction equipment is a special device used to extract phosphoric acid from phosphate rock or other phosphorus-containing raw materials.

[0003] Extraction operations typically involve the use of organic solvents, which may evaporate into the air during the extraction process, forming waste gas that poses a potential threat to the surrounding environment and human health. However, most phosphoric acid extraction devices have relatively simple waste gas treatment processes, using single filtration through adsorption towers, solutions, or filter plates. This can easily lead to insufficient absorption of harmful substances in the gas. Furthermore, acid mist is inevitably generated during phosphoric acid extraction. Acid mist contains acidic substances such as sulfuric acid and nitric acid, which can affect other gases and particulate matter in the atmosphere, potentially causing air quality deterioration and environmental problems such as acid rain. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, most phosphoric acid extraction devices have relatively simple waste gas treatment processes, using single-stage filtration through adsorption towers, solutions, or filter plates. This can easily lead to insufficient absorption of harmful substances in the gas, and acid mist is inevitably generated during phosphoric acid extraction. This invention proposes a phosphoric acid extraction device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a phosphoric acid extraction device, including a stirring tank, a gas collecting top cover fixedly connected to the top of the stirring tank, a first conveying pipe fixedly connected to the inner cavity of the gas collecting top cover, a cooling device fixedly connected to one end of the first conveying pipe, a fan fixedly installed on one side of the cooling device, a second conveying pipe fixedly connected to the output end of the fan, and a purification mechanism provided at one end of the second conveying pipe.

[0006] The purification mechanism includes a filter box, the inner cavity of which is fixedly connected to the surface of the second conveying pipe. A first mounting groove is provided on the top of the filter box, and a particulate filter plate is movably inserted into the inner wall of the first mounting groove. A second mounting groove is provided on the top of the filter box, and an acidic filter plate is movably inserted into the inner wall of the second mounting groove. A third mounting groove is provided on the top of the filter box, and an activated carbon plate is movably inserted into the inner wall of the third mounting groove. A spray element is provided on the top of the filter box, and a smoke exhaust pipe is fixedly connected to one side of the filter box.

[0007] Preferably, a first motor is fixedly installed on the top of the filter box, a cam is fixedly connected to the output end of the first motor, and a contact block is fixedly connected to one side of the particle filter plate, with the surface of the cam in contact with the surface of the contact block.

[0008] Preferably, the spraying component includes a liquid supply pipe, the surface of which is fixedly connected to a spraying pipe, the surface of which is fixedly connected to the inner wall of the filter box, and one end of the liquid supply pipe is fixedly connected to a connecting flange.

[0009] Preferably, a flow guide is fixedly connected to the inner wall of the filter box, and a drain pipe is fixedly connected to one side of the filter box.

[0010] Preferably, the cooling device includes a cooling box, one side of which is fixedly connected to one end of the first conveying pipe, a cooler is fixedly installed on the top of the cooling box, and the output end of the cooler is fixedly connected to a cooling exhaust pipe, the surface of which is fixedly connected to the inner cavity of the cooling box.

[0011] Preferably, a first baffle plate is fixedly connected to the inner wall of the cooling box, and a second baffle plate is fixedly connected to the inner wall of the cooling box. Both the first baffle plate and the second baffle plate are made of copper metal.

[0012] Preferably, a second motor is fixedly installed on one side of the gas collecting top cover, and a stirring rod is fixedly connected to the output end of the second motor. The surface of the stirring rod is movably connected to the inner cavity of the gas collecting top cover, and a stirrer is fixedly connected to the surface of the stirring rod. There are multiple stirrers. A sealing ring is fixedly connected to one side of the gas collecting top cover, and the surface of the sealing ring is attached to the inner wall of the stirring tank.

[0013] The advantages of this utility model are:

[0014] This invention uses a fan to create negative pressure at the port of the first conveying pipe, thus drawing the waste gas generated during the extraction process into a cooling device to cool the high-temperature waste gas. The cooled waste gas is then introduced into a purification mechanism via the fan. The filter box in the purification mechanism plays a key connecting role. The waste gas first passes through a particle filter plate to filter large particulate impurities in the air, then through an acid filter plate (which can use glass fiber filter media or polypropylene filter media, etc.) to filter acidic substances in the waste gas. Next, an activated carbon plate removes harmful microorganisms and odors from the waste gas. Finally, the filtered clean gas is discharged through an exhaust pipe. This invention integrates waste gas cooling, filtration, acid removal, and spraying, improving the efficiency of waste gas treatment during phosphoric acid extraction. It solves the problem that most phosphoric acid extraction devices have relatively simple waste gas treatment processes, relying on single filtration through adsorption towers, solutions, or filter plates, which easily leads to insufficient absorption of harmful substances in the gas, and the inevitable occurrence of acid mist during phosphoric acid extraction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall device of this utility model;

[0017] Figure 2 This is a first three-dimensional schematic diagram of the purification mechanism of this utility model;

[0018] Figure 3 This is a second perspective view of the purification mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the cooling box of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the mixing tank of this utility model.

[0021] In the diagram: 1. Mixing tank; 2. Gas collection top cover; 3. First conveying pipe; 4. Cooling equipment; 401. Cooling box; 402. Refrigerator; 403. Cooling exhaust pipe; 404. First baffle; 405. Second baffle; 5. Fan; 6. Second conveying pipe; 7. Purification mechanism; 701. Filter box; 702. First mounting slot; 703. Particle filter plate; 704. Second mounting slot; 705. Acid filter plate; 706. Third mounting slot; 707. Activated carbon plate; 708. Exhaust pipe; 8. Spray component; 801. Liquid supply pipe; 802. Spray pipe; 803. Connecting flange; 9. First motor; 10. Cam; 11. Contact block; 12. Guide component; 13. Drain pipe; 14. Second motor; 15. Stirring rod; 16. Stirrer; 17. Sealing ring. Detailed Implementation

[0022] 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 scope of protection of the present utility model.

[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0024] This application discloses a phosphoric acid extraction apparatus. (Refer to...) Figure 1 and Figure 2 A phosphoric acid extraction device includes a stirring tank 1, a gas collecting top cover 2 fixedly connected to the top of the stirring tank 1, a first conveying pipe 3 fixedly connected to the inner cavity of the gas collecting top cover 2, a cooling device 4 fixedly connected to one end of the first conveying pipe 3, a fan 5 fixedly installed on one side of the cooling device 4, a second conveying pipe 6 fixedly connected to the output end of the fan 5, and a purification mechanism 7 provided at one end of the second conveying pipe 6.

[0025] The purification mechanism 7 includes a filter box 701, the inner cavity of which is fixedly connected to the surface of the second conveying pipe 6. A first mounting groove 702 is provided on the top of the filter box 701, and a particle filter plate 703 is movably inserted into the inner wall of the first mounting groove 702. A second mounting groove 704 is provided on the top of the filter box 701, and an acidic filter plate 705 is movably inserted into the inner wall of the second mounting groove 704. A third mounting groove 706 is provided on the top of the filter box 701, and an activated carbon plate 707 is movably inserted into the inner wall of the third mounting groove 706. A spray element 8 is provided on the top of the filter box 701, and a smoke exhaust pipe 708 is fixedly connected to one side of the filter box 701. In this phosphoric acid extraction device, the solution to be extracted and phosphoric acid raw materials are fed into the inner cavity through the port of the stirring tank 1. The machine 5 creates a negative pressure at the port of the first conveying pipe 3, so the waste gas generated during the extraction process is extracted through the first conveying pipe 3 and first introduced into the cooling equipment 4 to cool the high-temperature waste gas. Then the cooled waste gas is introduced into the purification mechanism 7 through the fan 5. The filter box 701 in the purification mechanism 7 plays a major connecting role. The waste gas first passes through the particle filter plate 703 to filter out large particulate impurities in the air, and then passes through the acid filter plate 705 (the acid filter plate 705 can be made of glass fiber filter material or polypropylene filter material, etc.) to filter out acidic substances in the waste gas. Then the activated carbon plate 707 removes harmful microorganisms and odors in the waste gas. Finally, the filtered clean gas is discharged through the exhaust pipe 708, which improves the efficiency of waste gas treatment during the phosphoric acid extraction process.

[0026] In addition, the particle filter plate 703, the acid filter plate 705 and the activated carbon plate 707 are respectively inserted into the first mounting groove 702, the second mounting groove 704 and the third mounting groove 706, thereby improving the ease of assembly and disassembly of the particle filter plate 703, the acid filter plate 705 and the activated carbon plate 707.

[0027] Reference Figure 2 and Figure 3 A first motor 9 is fixedly installed on the top of the filter box 701. A cam 10 is fixedly connected to the output end of the first motor 9. A contact block 11 is fixedly connected to one side of the particle filter plate 703. The surface of the cam 10 is in contact with the surface of the contact block 11. Through the cam 10, the first motor 9 can drive the cam 10 to rotate. When the cam 10 rotates, it contacts the contact block 11 on one side of the particle filter plate 703, causing the particle filter plate 703 to vibrate to a certain extent. This facilitates the removal of impurities attached to the particle filter plate 703. The contact block 11 can provide some protection to the surface of the particle filter plate 703.

[0028] Reference Figure 3The spraying component 8 includes a liquid supply pipe 801, a spray pipe 802 fixedly connected to the surface of the liquid supply pipe 801, and a spray pipe 802 fixedly connected to the inner wall of the filter box 701. One end of the liquid supply pipe 801 is fixedly connected to a connecting flange 803. A guide component 12 is fixedly connected to the inner wall of the filter box 701. A drain pipe 13 is fixedly connected to one side of the filter box 701. Through the spraying component 8, the liquid supply pipe 801 in the spraying component 8 can be connected to an external water supply device or water supply pipe through the connecting flange 803. After water is supplied, the spray water is distributed to each spray pipe 802 through the liquid supply pipe 801. The port of the spray pipe 802 is placed in the inner cavity of the filter box 701, thereby spraying the gas again. The wastewater is guided to the drain pipe 13 through the guide component 12 and discharged through the drain pipe 13.

[0029] Reference Figure 4 The cooling device 4 includes a cooling box 401. One side of the cooling box 401 is fixedly connected to one end of the first conveying pipe 3. A cooler 402 is fixedly installed on the top of the cooling box 401. The output end of the cooler 402 is fixedly connected to a cooling exhaust pipe 403. The surface of the cooling exhaust pipe 403 is fixedly connected to the inner cavity of the cooling box 401. A first baffle 404 and a second baffle 405 are fixedly connected to the inner wall of the cooling box 401. Both the first baffle 404 and the second baffle 405 are made of copper. Through the cooling device 4, the cooler 402 cools the air through its internal compressor and refrigerant, and discharges the cold air to the inner cavity of the cooling box 401 through the cooling exhaust pipe 403. The copper-made first baffle 404 and the second baffle 405 can better contact the cold air. The high-temperature exhaust gas is circulated and cooled by multiple first baffles 404 and second baffles 405.

[0030] Reference Figure 5 A second motor 14 is fixedly installed on one side of the gas collecting top cover 2. A stirring rod 15 is fixedly connected to the output end of the second motor 14. The surface of the stirring rod 15 is movably connected to the inner cavity of the gas collecting top cover 2. A stirrer 16 is fixedly connected to the surface of the stirring rod 15. There are multiple stirrers 16. A sealing ring 17 is fixedly connected to one side of the gas collecting top cover 2. The surface of the sealing ring 17 is attached to the inner wall of the mixing tank 1. Through the setting of the sealing ring 17, the sealing effect between the gas collecting top cover 2 and the mixing tank 1 can be improved. The output shaft of the second motor 14 can drive the stirring rod 15 and the stirrer 16 to stir the solution. Multiple stirrers 16 can fully mix the solution and avoid local over-concentration as much as possible. The generated waste gas passes through the funnel-shaped gas collecting top cover 2 to improve the waste gas discharge efficiency.

[0031] Working principle: First, the solution to be extracted and phosphorus raw materials are added to the inner cavity through the port of the stirring tank 1. The sealing ring 17 improves the sealing effect between the gas collecting top cover 2 and the stirring tank 1. The output shaft of the second motor 14 drives the stirring rod 15 and the agitator 16 to stir the solution. Multiple agitators 16 can fully mix the solution and avoid local over-concentration. The generated waste gas passes through the funnel-shaped gas collecting top cover 2 to improve the waste gas discharge efficiency. The fan 5 creates a negative pressure at the port of the first conveying pipe 3, so the waste gas generated during the extraction process is extracted through the first conveying pipe 3 and first introduced into the cooling device 4 to cool the high-temperature waste gas. Then, the cooled waste gas is introduced into the purification mechanism 7 through the fan 5. The filter box 701 in the purification mechanism 7... The filter unit 703 serves as the main connecting element. The exhaust gas first passes through the particulate filter plate 703 to filter out large particulate impurities in the air. Then, it passes through the acid filter plate 705 (which can be made of glass fiber filter material or polypropylene filter material, etc.) to filter out acidic substances in the exhaust gas. Next, the activated carbon plate 707 removes harmful microorganisms and odors from the exhaust gas. The liquid supply pipe 801 in the spray unit 8 can be connected to an external water supply device or water supply pipe through the connecting flange 803. After water supply, the spray water is distributed to each spray pipe 802 through the liquid supply pipe 801. The port of the spray pipe 802 is placed in the inner cavity of the filter box 701, thereby spraying the gas again. Finally, the filtered clean gas is discharged through the exhaust pipe 708, which improves the efficiency of exhaust gas treatment in the phosphoric acid extraction process.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A phosphoric acid extraction apparatus, characterised in that: Including stirring tank (1), the top of stirring tank (1) is fixedly connected with gas collection top cover (2), the inner chamber of gas collection top cover (2) is fixedly communicated with first conveying pipe (3), one end of first conveying pipe (3) is fixedly connected with cooling equipment (4), one side of cooling equipment (4) is fixedly installed with fan (5), the output of fan (5) is fixedly communicated with second conveying pipe (6), one end of second conveying pipe (6) is provided with purification mechanism (7); The purification mechanism (7) includes a filter box (701), the inner chamber of the filter box (701) is fixedly communicated with the surface of the second conveying pipe (6), a first mounting slot (702) is formed in the top of the filter box (701), a particle filter plate (703) is movably inserted into the inner wall of the first mounting slot (702), a second mounting slot (704) is formed in the top of the filter box (701), an acid filter plate (705) is movably inserted into the inner wall of the second mounting slot (704), a third mounting slot (706) is formed in the top of the filter box (701), an activated carbon plate (707) is movably inserted into the inner wall of the third mounting slot (706), a spraying piece (8) is arranged on the top of the filter box (701), and a smoke exhaust pipe (708) is fixedly communicated with one side of the filter box (701).

2. A phosphoric acid extraction apparatus according to claim 1, characterised in that: A first motor (9) is fixedly installed on the top of the filter box (701), the output of the first motor (9) is fixedly connected with a cam (10), one side of the particle filter plate (703) is fixedly connected with a touch block (11), and the surface of the cam (10) is attached to the surface of the touch block (11).

3. A phosphoric acid extraction device according to claim 1, characterised in that: The spraying piece (8) includes a liquid supply pipe (801), the surface of the liquid supply pipe (801) is fixedly communicated with a spraying pipe (802), the surface of the spraying pipe (802) is fixedly connected to the inner wall of the filter box (701), and one end of the liquid supply pipe (801) is fixedly communicated with a connecting flange (803).

4. A phosphoric acid extraction apparatus according to claim 3, characterised in that: The inner wall of the filter box (701) is fixedly connected with a flow guide piece (12), and the filter box (701) is fixedly communicated with a liquid discharge pipe (13) on one side.

5. A phosphoric acid extraction device according to claim 1, characterized in that: The cooling equipment (4) includes a cooling box (401), one side of the cooling box (401) is fixedly communicated with one end of the first conveying pipe (3), a refrigerating device (402) is fixedly installed on the top of the cooling box (401), the output of the refrigerating device (402) is fixedly communicated with a cold air exhaust pipe (403), and the surface of the cold air exhaust pipe (403) is fixedly connected to the inner chamber of the cooling box (401).

6. A phosphoric acid extraction device according to claim 5, characterised in that: The inner wall of the cooling box (401) is fixedly connected with a first baffle (404), the inner wall of the cooling box (401) is fixedly connected with a second baffle (405), and the materials of the first baffle (404) and the second baffle (405) are both copper metal materials.

7. A phosphoric acid extraction device according to claim 1, characterized in that: One side of the gas collection top cover (2) is fixedly installed with a second motor (14), the output end of the second motor (14) is fixedly connected with a stirring rod (15), the surface of the stirring rod (15) is movably connected to the inner cavity of the gas collection top cover (2), the surface of the stirring rod (15) is fixedly connected with a stirrer (16), the number of the stirrer (16) is multiple, one side of the gas collection top cover (2) is fixedly connected with a sealing ring (17), the surface of the sealing ring (17) is attached to the inner wall of the stirring tank (1).

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