Efficient oil-water separation and clarification device

Abstract

The utility model discloses a high -efficient oil -water separation clarification device relates to rare earth extraction clarification technical field, include: clarification chamber, the clarification chamber is along the flow direction and is inserted with a plurality of demulsification components in proper order, the demulsification component includes demulsification quick sinking board, is arranged in array on the demulsification quick sinking board and is opened two -sided taper hole, two -sided taper hole includes inlet horn, necking cylinder section and outlet horn along the flow direction in proper order, the inner surface of inlet horn is coated with hydrophobic coating, the inner surface of outlet horn is coated with hydrophilic coating, the top of demulsification quick sinking board is fixed with the top plate, the upside of top plate both ends all thread -nesting has locking screw rod. The utility model discloses through along the flow direction and is inserted with a plurality of demulsification components in proper order in clarification chamber, is arranged in array on the demulsification quick sinking board of demulsification component and is opened two -sided taper hole, when emulsion passes, can destroy the stability of water -in -oil emulsion, promotes water drop to conglomeration, settlement, and improved clarification effect.

Description

Technical Field

[0001] This utility model relates to the field of rare earth extraction and clarification technology, specifically to a high-efficiency oil-water separation and clarification device. Background Technology

[0002] Rare earth elements are known as "industrial vitamins" and are widely used in permanent magnet materials, luminescent materials, catalysts, and new energy fields. my country is a major rare earth resource country, ranking first in the world in terms of reserves, production, and exports. Solvent extraction has become the mainstream process for rare earth separation and purification due to its advantages such as good selectivity, high recovery rate, and ease of continuous production.

[0003] In rare earth extraction, an organic phase consisting of an acidic extractant and a kerosene diluent is typically used in a multi-stage countercurrent extraction process with an aqueous phase containing rare earth ions in a mixing and clarifying tank. However, due to factors such as extractant saponification, impurities in the feed solution, and mechanical stirring and shearing, an oil-water emulsion is easily formed.

[0004] Traditional gravity clarifiers rely on density differences for natural stratification. For stable emulsions with particle sizes less than 50 μm, the settling speed is extremely slow, requiring a long residence time. This results in bulky equipment with a large footprint. Furthermore, if the emulsion cannot be effectively demulsified, some organic phase will be lost with the aqueous phase, causing not only expensive extractant loss but also increasing the load on subsequent wastewater treatment. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency oil-water separation and clarification device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency oil-water separation and clarification device, comprising: The clarification chamber has an overflow outlet on its left side and a water phase outlet at the bottom right side. Multiple sets of limiting components are symmetrically arranged on the inner walls of the front and rear sides of the clarification chamber. Multiple demulsification components are sequentially inserted into the clarification chamber along the flow direction. The front and rear edges of the demulsification components are slidably nested in the corresponding limiting components. The demulsification assembly includes a demulsification fast settling plate with an array of double-sided conical holes. The double-sided conical holes include an inlet horn, a necked cylindrical section, and an outlet horn in sequence along the flow direction. The inner surface of the inlet horn is coated with a hydrophobic coating, and the inner surface of the outlet horn is coated with a hydrophilic coating. A top plate is fixed to the top of the demulsification fast settling plate, and locking screws are threaded into both the front and rear ends of the upper side of the top plate. The locking screws are threadedly connected to the outer wall of the clarification chamber.

[0007] Furthermore, the demulsifying and quick-sinking plate is made of polytetrafluoroethylene, the hydrophobic coating is a fluorocarbon-nano SiO2 composite coating, and the hydrophilic coating is a TiO2 sol-gel film.

[0008] Furthermore, the limiting component includes two vertically parallel limiting blocks, which are fixedly connected to the inner wall of the clarification chamber. A limiting slide is provided between the two limiting blocks, and the edge of the demulsifying quick sinking plate is placed in the limiting slide to position the demulsifying quick sinking plate, which not only ensures smooth insertion and withdrawal but also restricts lateral swing and prevents resonance wear.

[0009] Furthermore, the front, rear, and bottom edges of the demulsifying and settling plate are fitted with an integrally formed elastic lip seal. The outer wall of the elastic lip seal abuts against the inner wall of the clarification chamber. The elastic lip seal is made of fluororubber material and can effectively seal the emulsion, preventing it from bypassing the flow and short-circuiting.

[0010] Furthermore, the front, rear, and bottom edges of the demulsifying quick-drying plate are provided with multiple locking holes, and the elastic lip seal is provided with a groove. The elastic lip seal is sleeved on the demulsifying quick-drying plate through the groove. The front and rear side walls of the groove are fixed with locking blocks at the corresponding positions of the locking holes. The locking blocks are engaged in the locking holes, which makes the connection between the elastic lip seal and the demulsifying quick-drying plate simple and convenient for individual replacement after the lip seal ages, without the need to scrap the entire plate.

[0011] Furthermore, a handle is fixed to the upper center of the top plate, and the handle is marked with a number. The handle facilitates the insertion of the demulsifying component into the clarification chamber or the removal of the demulsifying component from the clarification chamber. The marking facilitates matching and prevents incorrect insertion.

[0012] Furthermore, screw seats are fixed on the front and rear outer walls of the clarification chamber at the positions corresponding to the locking screws. The screw seats have threaded holes, and the locking screws match the threaded holes to achieve a quick connection between the demulsification assembly and the outer wall of the clarification chamber, thereby facilitating the fixation of the demulsification assembly.

[0013] Furthermore, a rotating head is fixed to the top of the locking screw, which facilitates the application of force to the locking screw, thereby making it easy to rotate the locking screw and achieving quick assembly and disassembly.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. By sequentially inserting multiple demulsification components along the flow direction in the clarification chamber, and opening double-sided conical holes arranged in an array on the demulsification fast settling plate of the demulsification components, the stability of the water-in-oil emulsion can be destroyed when the emulsion passes through, promoting the aggregation and sedimentation of water droplets, thereby improving the clarification effect. 2. The demulsifying assembly is installed in the clarification chamber by plugging it in and is fixed by the threaded connection between the locking screw and the screw seat. The installation is simple and easy to disassemble, which can realize the quick assembly and disassembly of the demulsifying assembly, making it convenient to remove the demulsifying assembly for maintenance or replacement. 3. The front, rear, and bottom edges of the demulsifying and settling plate are fitted with an integrally molded elastic lip seal. The outer wall of the elastic lip seal abuts against the inner wall of the clarification chamber. The elastic lip seal can effectively seal the emulsion and prevent it from bypassing the flow. The elastic lip seal and the demulsifying and settling plate are easy to install and remove, and the lip seal can be replaced separately after aging without scrapping the entire plate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the present invention after the demulsification component has been removed; Figure 3 This is a schematic diagram of the demulsifying component of this utility model; Figure 4 This is a schematic diagram of the demulsification and quick-sinking plate of this utility model; Figure 5 This is a cross-sectional view of the demulsifying and quick-sinking plate of this utility model; Figure 6 This is a schematic diagram of the elastic lip seal structure of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Clarification chamber; 2. Overflow outlet; 3. Aqueous phase outlet; 4. Demulsification quick settling plate; 5. Double-sided conical hole; 6. Inlet horn; 7. Necked cylindrical section; 8. Outlet horn; 9. Top plate; 10. Locking screw; 11. Limiting block; 12. Elastic lip seal; 13. Locking hole; 14. Insert groove; 15. Locking block; 16. Handle; 17. Screw seat; 18. Rotating head. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] This utility model provides a high-efficiency oil-water separation and clarification device, such as Figures 1 to 5 As shown, it includes: Clarification chamber 1, with an overflow outlet 2 on the left side and a water phase outlet 3 at the bottom right side of clarification chamber 1. Multiple demulsification components are sequentially inserted into clarification chamber 1 along the flow direction. The demulsification assembly includes a demulsification fast sink plate 4, on which double-sided conical holes 5 are arranged in an array. The double-sided conical holes 5 include an inlet horn 6, a necked cylindrical section 7 and an outlet horn 8 in sequence along the flow direction. The inner surface of the inlet horn 6 is coated with a hydrophobic coating, and the inner surface of the outlet horn 8 is coated with a hydrophilic coating.

[0020] The demulsification and quick-sinking plate 4 is made of polytetrafluoroethylene, with a hydrophobic coating of fluorocarbon-nano SiO2 composite coating and a hydrophilic coating of TiO2 sol-gel film.

[0021] In this invention, multiple demulsification components are sequentially inserted into the clarification chamber 1 along the flow direction. The demulsification fast-sinking plate 4 of each component has an array of double-sided conical holes 5. Each double-sided conical hole 5 includes an inlet horn 6, a necked cylindrical section 7, and an outlet horn 8 along the flow direction. The inner surface of the inlet horn 6 is coated with a hydrophobic coating, and the inner surface of the outlet horn 8 is coated with a hydrophilic coating. When the emulsion passes through, the hydrophobic coating on the inlet horn 6 causes the continuous oil phase to preferentially adhere to the wall, while the aqueous phase droplets are squeezed towards the central axis. Adjacent droplets... As the distance decreases, collisions and coalescence are induced. When the emulsion enters the constricted cylindrical section 7, the local flow velocity increases due to the sudden reduction in orifice size, resulting in high-speed shearing. This directly breaks through the residual interfacial film, exposing the water droplet core and reducing the stability of the emulsion. When the emulsion enters the outlet funnel section 8, the orifice size expands and the flow velocity drops sharply. The hydrophilic coating causes the aqueous phase to spread into a water film immediately, forming a continuous water chain with the subsequent aqueous phase. This "tears" the already coalesced large water droplets from the oil phase, completely destroying the emulsion. This achieves oil droplet coalescence and aqueous phase separation, and promotes water droplet coalescence and sedimentation, thus improving the clarification efficiency. The number of demulsification components can be set to 2 to 4, and they are located in the clarification chamber 1 near the overflow port 2. The distance between two adjacent demulsification components is maintained between 200-500 mm to ensure that the fluid has sufficient residence time between the demulsification components for oil-water separation.

[0022] like Figures 1 to 5 As shown, multiple sets of limiting components are symmetrically arranged on the inner walls of the front and rear sides of the clarification chamber 1, and the front and rear edges of the demulsification component are slidably nested in the corresponding limiting components.

[0023] The limiting assembly includes two vertically parallel limiting blocks 11. The limiting blocks 11 are fixedly connected to the inner wall of the clarification chamber 1. A limiting slide is provided between the two limiting blocks 11. The edge of the demulsification quick sink plate 4 is placed in the limiting slide to position the demulsification quick sink plate 4, which not only ensures smooth insertion and withdrawal but also limits lateral swing and prevents resonance wear.

[0024] The top of the demulsifying and settling plate 4 is fixed with a top plate 9. Both the front and rear ends of the upper side of the top plate 9 are threaded with locking screws 10, which are threaded to the outer wall of the clarification chamber 1.

[0025] A handle 16 is fixed to the upper middle part of the top plate 9. The handle 16 is marked with a number. The handle 16 makes it easy to insert the demulsifying component into the clarification chamber 1 or to remove the demulsifying component from the clarification chamber 1. The marking makes it easy to match and prevents incorrect insertion.

[0026] The front and rear outer walls of the clarification chamber 1 are fixed with screw seats 17 corresponding to the positions of the locking screws 10. The screw seats 17 are provided with threaded holes. The locking screws 10 are matched with the threaded holes to realize the quick connection between the demulsification assembly and the outer wall of the clarification chamber 1, thereby facilitating the fixation of the demulsification assembly.

[0027] A rotating head 18 is fixed to the top of the locking screw 10. The rotating head 18 facilitates the application of force to the locking screw 10, thereby making it easy to rotate the locking screw 10 and achieve quick assembly and disassembly.

[0028] In this invention, when installing the demulsifying assembly, the demulsifying quick-set plate 4 is aligned with the corresponding limiting components on both sides of the inner wall of the clarifying chamber 1, so that the front and rear edges of the demulsifying quick-set plate 4 are inserted between the two limiting blocks 11 of the corresponding limiting components. Then, the top plate 9 is pressed down until the bottom of the top plate 9 abuts against the top of the clarifying chamber 1. Then, the rotating head 18 is rotated to drive the locking screw 10 to rotate and move down, so that the lower thread of the locking screw 10 is nested in the threaded hole on the screw seat 17, thereby realizing the installation of the demulsifying assembly. The installation is quick and convenient. When disassembling, simply rotate the rotating head 18 in the opposite direction to make the locking screw 10 move up and disengage from the screw seat 17. Then, hold the handle 16 and pull the demulsifying assembly upward with force. The demulsifying assembly is quick and convenient to install and remove, which facilitates the disassembly of the demulsifying assembly for maintenance or replacement in the future.

[0029] like Figure 3 , Figure 4 and Figure 6 As shown, the front, rear, and bottom edges of the demulsifying quick settling plate 4 are fitted with an integrally formed elastic lip seal 12. The outer wall of the elastic lip seal 12 abuts against the inner wall of the clarification chamber 1. The elastic lip seal 12 is made of fluororubber material and can effectively play a sealing role, preventing the emulsion from bypassing and short-circuiting.

[0030] Multiple locking holes 13 are provided on the front, rear, and bottom edges of the demulsifying quick-sinking plate 4. A groove 14 is provided on the elastic lip seal 12. The elastic lip seal 12 is sleeved on the demulsifying quick-sinking plate 4 through the groove 14. Locking blocks 15 are fixed on the front and rear side walls of the groove 14 at the positions corresponding to the locking holes 13. The locking blocks 15 are locked in the locking holes 13, making the connection between the elastic lip seal 12 and the demulsifying quick-sinking plate 4 simple.

[0031] In this utility model, the front and rear edges and bottom edge of the demulsifying quick settling plate 4 are fitted with an integrally formed elastic lip seal 12. The outer wall of the elastic lip seal 12 abuts against the inner wall of the clarification chamber 1. The elastic lip seal 12 can effectively play a sealing role, preventing the emulsion from bypassing and short-circuiting. Moreover, the elastic lip seal 12 and the demulsifying quick settling plate 4 are simple and convenient to disassemble and assemble, and it is convenient to replace the lip seal separately after aging, without scrapping the whole plate.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-efficiency oil-water separation and clarification device, characterized in that, include: The clarification chamber (1) has an overflow outlet (2) on the left side and a water phase outlet (3) at the bottom right side. Multiple sets of limiting components are symmetrically arranged on the inner walls of the front and rear sides of the clarification chamber (1). Multiple demulsification components are sequentially inserted into the clarification chamber (1) along the flow direction. The front and rear edges of the demulsification components are slidably nested in the corresponding limiting components. The demulsification assembly includes a demulsification fast sink plate (4), on which double-sided conical holes (5) are arranged in an array. The double-sided conical holes (5) include an inlet horn (6), a necked cylindrical section (7), and an outlet horn (8) in sequence along the flow direction. The inner surface of the inlet horn (6) is coated with a hydrophobic coating, and the inner surface of the outlet horn (8) is coated with a hydrophilic coating. A top plate (9) is fixed to the top of the demulsification fast sink plate (4). Locking screws (10) are threadedly nested at both ends of the upper side of the top plate (9). The locking screws (10) are threadedly connected to the outer wall of the clarification chamber (1).

2. The high-efficiency oil-water separation and clarification device according to claim 1, characterized in that: The demulsifying and quick-sinking plate (4) is made of polytetrafluoroethylene, the hydrophobic coating is a fluorocarbon-nano SiO2 composite coating, and the hydrophilic coating is a TiO2 sol-gel film.

3. The high-efficiency oil-water separation and clarification device according to claim 1, characterized in that: The limiting assembly includes two vertically arranged limiting blocks (11), which are fixedly connected to the inner wall of the clarification chamber (1). A limiting slide is provided between the two limiting blocks (11), and the edge of the demulsification quick-sinking plate (4) is placed in the limiting slide.

4. The high-efficiency oil-water separation and clarification device according to claim 1, characterized in that: The front and rear edges and bottom edge of the demulsifying quick settling plate (4) are fitted with an integrally formed elastic lip seal (12). The outer wall of the elastic lip seal (12) abuts against the inner wall of the clarification chamber (1). The elastic lip seal (12) is made of fluororubber material.

5. The high-efficiency oil-water separation and clarification device according to claim 4, characterized in that: The front, rear, and bottom edges of the demulsifying quick-sinking plate (4) are provided with multiple locking holes (13). The elastic lip seal (12) is provided with a groove (14). The elastic lip seal (12) is sleeved on the demulsifying quick-sinking plate (4) through the groove (14). The front and rear side walls of the groove (14) are fixed with locking blocks (15) at the positions corresponding to the locking holes (13). The locking blocks (15) are locked in the locking holes (13).

6. The high-efficiency oil-water separation and clarification device according to claim 1, characterized in that: A handle (16) is fixed to the upper middle part of the top plate (9), and a label is provided on the handle (16).

7. The high-efficiency oil-water separation and clarification device according to claim 1, characterized in that: The front and rear outer walls of the clarification chamber (1) are fixed with screw seats (17) corresponding to the positions of the locking screws (10). The screw seats (17) are provided with threaded holes, and the locking screws (10) are matched with the threaded holes.

8. The high-efficiency oil-water separation and clarification device according to claim 1, characterized in that: The top end of the locking screw (10) is fixed with a rotating head (18).

Images