Device for rapidly increasing pH value of resin suspension mixture

Abstract

The present invention discloses a device for rapidly increasing the pH value of a resin suspension mixture, which comprises a primary filtration and replacement assembly, an intermediate filtration and replacement assembly, and a final filtration and replacement assembly arranged in sequence. The primary filtration and replacement assembly, the intermediate filtration and replacement assembly, and the final filtration and replacement assembly all comprise a mixing device and a filtration device. One end of the mixing device is provided with a replacement liquid feed port and a resin suspension mixture feed port, the other end of the mixing device is communicated with the filtration device, the mixing device is internally provided with a first baffle and a second baffle, one end of the filtration device is provided with a filtrate outlet, and the filtration device is provided with a resin suspension mixture discharge pipe. By adopting the device for rapidly increasing the pH value of the resin suspension mixture with the above structure, the present invention can realize the online multi-stage continuous filtration and replacement of the resin suspension mixture, improve the replacement speed between the resin suspension mixture and the replacement liquid and rapidly increase the pH value of the resin suspension mixture, thereby ensuring the stability of product quality. Moreover, the replacement liquid is concentrated step by step, saving the consumption of pure water and reducing the discharge amount of highly acidic waste liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of improving the pH value of a resin suspension, and particularly to a device for rapidly increasing the pH value of a resin suspension. Background Art

[0002] Due to the unstable nature of PSPI resin, when the resin is in an acidic environment for too long, it is likely to cause a change in the resin properties, resulting in unstable final resin properties. In the prior art, the method mainly used is to let the resin stand for filtration and perform multiple replacements to achieve the pH value increase. However, in this method, due to the relatively fine resin particles, the filtration and replacement time is relatively long, which leads to a long time for the resin to be in an acidic environment, and ultimately the product quality cannot be guaranteed. To solve the above problems, a device for rapidly increasing the pH value of a resin suspension is needed. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for rapidly increasing the pH value of a resin suspension, which can realize the online multi-stage continuous filtration and replacement of the resin suspension, improve the replacement speed between the resin suspension and the replacement liquid, and increase the pH value of the resin suspension in the shortest time, thereby ensuring the stability of the product quality. Moreover, the replacement liquid is concentrated step by step, saving the consumption of pure water and reducing the discharge amount of highly acidic waste liquid.

[0004] To achieve the above purpose, the present invention provides a device for rapidly increasing the pH value of a resin suspension, which includes a primary filtration and replacement component, multiple intermediate filtration and replacement components, and a final filtration and replacement component arranged in sequence. The primary filtration and replacement component, the intermediate filtration and replacement components, and the final filtration and replacement component all include a mixing device and a filtration device. One end of the mixing device is provided with a replacement liquid inlet and a resin suspension inlet. The replacement liquid inlet is connected to a replacement liquid inlet pipe. The other end of the mixing device is communicated with the filtration device. The mixing device is internally provided with first baffles and second baffles that are evenly and alternately distributed along its length direction. The end of the filtration device far from the mixing device is provided with a filtrate outlet. The filtration device is internally provided with a filter mesh. A resin suspension discharge pipe located between the filter mesh and the mixing device is provided on the side wall of the filtration device.

[0005] Concentrating pumps are provided on both the displacement liquid feed pipe of the primary filtration and displacement assembly and the displacement liquid feed pipe of the intermediate filtration and displacement assembly. The filtrate outlet of the primary filtration and displacement assembly is connected to the high-acid wastewater discharge pipe. The resin suspension feed port of the primary filtration and displacement assembly is connected to the storage tank through the high-acid resin suspension feed pipe. The displacement liquid feed pipe of the primary filtration and displacement assembly is connected to the filtrate outlet of the adjacent intermediate filtration and displacement assembly. The resin suspension discharge pipe of the primary filtration and displacement assembly is connected to the resin suspension feed port of the adjacent intermediate filtration and displacement assembly. The filtrate outlet of the final filtration and displacement assembly is connected to the displacement liquid feed pipe of the adjacent intermediate filtration and displacement assembly. The resin suspension feed port of the final filtration and displacement assembly is connected to the resin suspension discharge pipe of the adjacent intermediate filtration and displacement assembly. The displacement liquid feed pipe of the final filtration and displacement assembly is connected to the pure water source. The resin suspension discharge pipe of the final filtration and displacement assembly is connected to the neutral resin suspension transfer pipe. Among two adjacent intermediate filtration and displacement assemblies, the displacement liquid feed pipe of the upper-level intermediate filtration and displacement assembly is connected to the filtrate outlet of the lower-level intermediate filtration and displacement assembly, and the resin suspension discharge pipe of the upper-level intermediate filtration and displacement assembly is connected to the resin suspension feed port of the lower-level intermediate filtration and displacement assembly.

[0006] Preferably, the number of the intermediate filtration and displacement assemblies is 3.

[0007] Preferably, both the first baffle and the second baffle include an arc-shaped plate and a flat plate. The arc-shaped plate is connected to one end of the flat plate close to the resin suspension feed port. Both sides of the first baffle are fixedly connected to the inner side wall of the mixing device. A first gap is provided between the upper and lower ends of the first baffle and the inner side wall of the mixing device. A second gap is provided between both sides of the second baffle and the inner side wall of the mixing device. The upper and lower ends of the first baffle are fixedly connected to the inner side wall of the mixing device.

[0008] Preferably, control valves are provided on the displacement liquid feed pipe, the high-acid resin suspension feed pipe, the neutral resin suspension transfer pipe, and the high-acid wastewater discharge pipe.

[0009] Preferably, the filter screen is a planar structure adapted to the inner channel structure of the filtering device, and the filter screen is inclined at 45° in the filtering device. The resin suspension discharge pipe is perpendicular to the filtering device and is connected to the bottom end of the filter screen.

[0010] Preferably, the resin suspension discharging pipe is obliquely connected to the filtering device at an angle of 45°, the filter screen is located on the extended surface of the outer wall of the resin suspension discharging pipe, and the port of the filter screen far from the resin suspension discharging pipe is fixedly connected to the inner channel of the filtering device.

[0011] Therefore, the device for rapidly increasing the pH value of the resin suspension adopting the above structure in the present invention has the following beneficial effects:

[0012] 1. Through the online multi-stage continuous filtration and replacement of the resin suspension, the pH value of the resin suspension is increased within a short time, ensuring the product quality.

[0013] 2. The waste water concentration increasing pump concentrates the replacement liquid step by step, and finally enables the highly acidic replacement liquid after being replaced by the first-stage filtration and replacement assembly to be finally discharged through the highly acidic waste water discharging pipe, reducing the discharge amount of highly acidic waste liquid.

[0014] 3. The whole set of device is simple to operate and control, and reliable to run and easy to implement.

[0015] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0016] Figure 1 is a schematic diagram of an embodiment of the device for rapidly increasing the pH value of the resin suspension in the present invention;

[0017] Figure 2 is a schematic diagram of an embodiment of the mixing device in the device for rapidly increasing the pH value of the resin suspension in the present invention;

[0018] Figure 3 is a schematic diagram of Embodiment 1 of the filtering device in the device for rapidly increasing the pH value of the resin suspension in the present invention;

[0019] Figure 4 is a schematic diagram of Embodiment 2 of the filtering device in the device for rapidly increasing the pH value of the resin suspension in the present invention.

[0020] Reference Signs

[0021] 1. First-stage filtration and replacement assembly; 2. Intermediate-stage filtration and replacement assembly; 3. Final-stage filtration and replacement assembly; 4. Mixing device; 5. Filtering device; 6. Replacement liquid feeding pipe; 7. First baffle; 71. Arc plate; 72. Flat plate; 8. Second baffle; 9. Filter screen; 10. Resin suspension discharging pipe; 11. Concentration increasing pump; 12. Highly acidic waste water discharging pipe; 13. Highly acidic resin suspension feeding pipe; 14. Storage tank; 15. Pure water source; 16. Neutral resin suspension conveying pipe. Detailed Embodiments

[0022] The following further describes the embodiments of the present invention in conjunction with the accompanying drawings.

[0023] Embodiment 1:

[0024] As shown in the figure, a device for rapidly increasing the pH value of a resin suspension includes a first-stage filtration and replacement component 1, multiple intermediate-stage filtration and replacement components 2, and a final-stage filtration and replacement component 3 arranged in sequence. The number of intermediate-stage filtration and replacement components 2 is 3. The first-stage filtration and replacement component 1, the intermediate-stage filtration and replacement components 2, and the final-stage filtration and replacement component 3 all include a mixing device 4 and a filtration device 5. One end of the mixing device 4 is provided with a replacement liquid inlet and a resin suspension inlet, and the replacement liquid inlet is connected to a replacement liquid inlet pipe 6. The other end of the mixing device 4 is communicated with the filtration device 5. The mixing device 4 is provided with a first baffle 7 and a second baffle 8 that are evenly and alternately distributed along its length direction.

[0025] Both the first baffle 7 and the second baffle 8 include an arc-shaped plate 71 and a flat plate 72, and the arc-shaped plate 71 is connected to one end of the flat plate 72 close to the resin suspension inlet. Both sides of the first baffle 7 are fixedly connected to the inner side wall of the mixing device 4, and there is a first gap between the upper and lower ends of the first baffle 7 and the inner side wall of the mixing device 4. There is a second gap between both sides of the second baffle 8 and the inner side wall of the mixing device 4, and the upper and lower ends of the second baffle 8 are fixedly connected to the inner side wall of the mixing device 4. The first baffle 7 and the second baffle 8 can cause the solid-liquid flow to deflect and reverse in the mixing device 4, causing a turbulent flow phenomenon, thereby increasing the mixing degree between the replacement liquid and the resin suspension and increasing the replacement efficiency.

[0026] The end of the filtration device 5 far from the mixing device 4 is provided with a filtrate outlet. The filtration device 5 is provided with a filter screen 9, and a resin suspension outlet pipe 10 located between the filter screen 9 and the mixing device 4 is provided on the side wall of the filtration device 5. The filter screen 9 is a planar structure adapted to the inner channel structure of the filtration device 5, and the filter screen 9 is inclined at 45° in the filtration device 5. The resin suspension outlet pipe 10 is perpendicular to the filtration device 5, and the resin suspension outlet pipe 10 is connected to the bottom end of the filter screen 9. The filter screen 9 can separate the replaced replacement liquid and the resin suspension in the mixing device 4, and make the replacement liquid with increased acidity flow out of the filtration device 5 from the filtrate outlet, and the resin suspension with reduced acidity flow out of the filtration device 5 from the resin suspension outlet pipe 10.

[0027] The displacement liquid feed pipes 6 of the primary filtration and displacement assembly 1 and the displacement liquid feed pipes 6 of the intermediate filtration and displacement assembly 2 are both provided with concentration pumps 11, which can provide power for the flow of the displacement liquid. The filtrate outlet of the primary filtration and displacement assembly 1 is connected to the high-acid wastewater discharge pipe 12, and the high-acid wastewater discharge pipe 12 realizes the final discharge of the displacement liquid. The resin suspension feed port of the primary filtration and displacement assembly 1 is connected to the storage tank 14 through the high-acid resin suspension feed pipe 13, and the high-acid resin suspension feed pipe 13 can introduce the high-acid resin suspension from the storage tank 14 into the primary filtration and displacement assembly 1. The displacement liquid feed pipe 6 of the primary filtration and displacement assembly 1 is connected to the filtrate outlet of the adjacent intermediate filtration and displacement assembly 2, and the displacement liquid feed pipe 6 of the primary filtration and displacement assembly 1 can introduce the displacement liquid discharged from the adjacent intermediate filtration and displacement assembly 2 into the primary filtration and displacement assembly 1 to realize the reuse of the displacement liquid. The resin suspension discharge pipe 10 of the primary filtration and displacement assembly 1 is connected to the resin suspension feed port of the adjacent intermediate filtration and displacement assembly 2, so that the resin suspension after displacement in the primary filtration and displacement assembly 1 enters the adjacent intermediate filtration and displacement assembly 2.

[0028] Among two adjacent intermediate filtration and displacement assemblies 2, the displacement liquid feed pipe 6 of the upper-level intermediate filtration and displacement assembly 2 is connected to the filtrate outlet of the lower-level intermediate filtration and displacement assembly 2, so that the displacement liquid with increased acidity in the lower-level intermediate filtration and displacement assembly 2 is introduced into the upper-level intermediate filtration and displacement assembly 2 for reuse. The resin suspension discharge pipe 10 of the upper-level intermediate filtration and displacement assembly 2 is connected to the resin suspension feed port of the lower-level intermediate filtration and displacement assembly 2, so that the resin suspension in the upper-level intermediate filtration and displacement assembly 2 continues to enter the lower-level intermediate filtration and displacement assembly 2 for further displacement.

[0029] The resin suspension feed port of the final filtration and displacement assembly 3 is connected to the resin suspension discharge pipe 10 of the adjacent intermediate filtration and displacement assembly 2, so that the resin suspension displaced by the intermediate filtration and displacement assembly 2 enters the final filtration and displacement assembly 3. The displacement liquid feed pipe 6 of the final filtration and displacement assembly 3 is connected to the pure water source 15, so that pure water can perform the final displacement on the resin suspension that has been displaced multiple times. The filtrate outlet of the final filtration and displacement assembly 3 is connected to the displacement liquid feed pipe 6 of the adjacent intermediate filtration and displacement assembly 2, so that the relatively pure displacement liquid enters the adjacent intermediate filtration and displacement assembly 2 arranged near the final filtration and displacement assembly 3 for reuse. The resin suspension discharge pipe 10 of the final filtration and displacement assembly 3 is connected to the neutral resin suspension conveying pipe 16, and the neutral resin suspension conveying pipe 16 can convey the displaced resin suspension to the next process.

[0030] Control valves are provided on the displacement liquid feed pipe 6, the highly acidic resin suspension feed pipe 13, the neutral resin suspension transfer pipe 16, and the highly acidic wastewater discharge pipe 12. The control valve in the displacement liquid feed pipe 6 can control the inlet speed of the displacement liquid. The control valve in the highly acidic resin suspension feed pipe 13 can control the filling speed of the highly acidic resin suspension. The control valve on the neutral resin suspension transfer pipe 16 can control the speed at which the resin suspension after displacement enters the next process. The control valve on the highly acidic wastewater discharge pipe 12 can control the discharge speed of the highly acidic wastewater.

[0031] During use, the resin suspension realizes an online multi-stage continuous filtration and displacement process, and the displacement efficiency greatly improves the working efficiency compared with traditional methods. Specifically, the highly acidic resin suspension is introduced from the storage tank 14 into the first-stage filtration and displacement assembly 1 through the highly acidic resin suspension feed pipe 13 for displacement. Subsequently, the resin suspension in the first-stage filtration and displacement assembly 1 enters the intermediate-stage filtration and displacement assembly 2 arranged near the first-stage filtration and displacement assembly 1 through the resin suspension discharge pipe 10 of the first-stage filtration and displacement assembly 1 to continue the displacement. Then, it enters the next intermediate-stage filtration and displacement assembly 2 through the resin suspension discharge pipe 10 of this intermediate-stage filtration and displacement assembly 2 to continue the displacement. Finally, it enters the last-stage filtration and displacement assembly 3 through the resin suspension discharge pipe 10 of the intermediate-stage filtration and displacement assembly 2 arranged near the last-stage filtration and displacement assembly 3 for the final displacement, and the resin suspension after displacement is transported to the next process through the resin suspension discharge pipe 10 of the last-stage filtration and displacement assembly 3 and the neutral resin suspension transfer pipe 16. Among them, the pure water source 15 serves as the displacement liquid and first enters the last-stage filtration and displacement assembly 3 through the displacement liquid feed pipe 6 under the action of the lift pump to perform the final displacement on the resin suspension that has been displaced multiple times. At this time, the first concentration of the displacement liquid is achieved. Subsequently, the displacement liquid enters all the intermediate-stage filtration and displacement assemblies 2 and the first-stage filtration and displacement assembly 1 in sequence, and finally is discharged through the highly acidic wastewater discharge pipe 12. During this process, the displacement liquid realizes multi-stage concentration and recycling, reducing the discharge amount of highly acidic waste liquid. When the resin suspension is displaced in the first-stage filtration and displacement assembly 1, the intermediate-stage filtration and displacement assembly 2, and the last-stage filtration and displacement assembly 3, the first baffle 7 and the second baffle 8 increase the mixing degree between the resin suspension and the displacement liquid, further increasing the displacement speed, so that the pH value of the resin suspension is increased within a short time, ensuring product quality.

[0032] Example 2:

[0033] The difference between this example and Example 1 is that the resin suspension discharge pipe 10 is obliquely connected to the filter device 5 at an angle of 45°. The filter screen 9 is located on the extended surface of the outer wall of the resin suspension discharge pipe 10, and the port of the filter screen 9 far from the resin suspension discharge pipe 10 is fixedly connected to the inner channel of the filter device 5. The filter area of the filter screen 9 in this example is increased, effectively improving the filtration efficiency.

[0034] Therefore, the device for rapidly increasing the pH value of the resin suspension mixture with the above structure can realize the online multi-stage continuous filtration and replacement of the resin suspension mixture, improve the replacement speed between the resin suspension mixture and the replacement liquid, increase the pH value of the resin suspension mixture in the shortest time, thus ensuring the stability of product quality. Moreover, the replacement liquid is concentrated step by step, saving the consumption of pure water and reducing the discharge amount of highly acidic waste liquid.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. An apparatus for rapidly increasing the pH value of a resin suspension, characterized in that: It includes a primary filtration and replacement component, multiple intermediate filtration and replacement components, and a final filtration and replacement component arranged in sequence. The primary filtration and replacement component, the intermediate filtration and replacement components, and the final filtration and replacement component all include a mixing device and a filtration device. One end of the mixing device is provided with a replacement liquid feed port and a resin suspension feed port. The replacement liquid feed port is connected to a replacement liquid feed pipe. The other end of the mixing device is communicated with the filtration device. The mixing device is internally provided with a first baffle and a second baffle that are evenly and alternately distributed along its length direction. One end of the filtration device far from the mixing device is provided with a filtrate outlet. The filtration device is internally provided with a filter mesh. A resin suspension discharge pipe located between the filter mesh and the mixing device is provided on the side wall of the filtration device. Concentrating pumps are provided on the replacement liquid feed pipes of the primary filtration and replacement component and the intermediate filtration and replacement components. The filtrate outlet of the primary filtration and replacement component is connected to a high-acidity wastewater discharge pipe. The resin suspension feed port of the primary filtration and replacement component is connected to a storage tank through a high-acidity resin suspension feed pipe. The replacement liquid feed pipe of the primary filtration and replacement component is connected to the filtrate outlet of the adjacent intermediate filtration and replacement component. The resin suspension discharge pipe of the primary filtration and replacement component is connected to the resin suspension feed port of the adjacent intermediate filtration and replacement component. The filtrate outlet of the final filtration and replacement component is connected to the replacement liquid feed pipe of the adjacent intermediate filtration and replacement component. The resin suspension feed port of the final filtration and replacement component is connected to the resin suspension discharge pipe of the adjacent intermediate filtration and replacement component. The replacement liquid feed pipe of the final filtration and replacement component is connected to a pure water source. The resin suspension discharge pipe of the final filtration and replacement component is connected to a neutral resin suspension transfer pipe. Among two adjacent intermediate filtration and replacement components, the replacement liquid feed pipe of the upper-level intermediate filtration and replacement component is connected to the filtrate outlet of the lower-level intermediate filtration and replacement component, and the resin suspension discharge pipe of the upper-level intermediate filtration and replacement component is connected to the resin suspension feed port of the lower-level intermediate filtration and replacement component.

2. The device for rapidly increasing the pH value of the resin suspension mixture according to claim 1, characterized in that: The number of the intermediate filtration and replacement components is 3.

3. The device for rapidly increasing the pH value of the resin suspension mixture according to claim 2, wherein: Both the first baffle and the second baffle include an arc-shaped plate and a flat plate. The arc-shaped plate is connected to one end of the flat plate close to the resin suspension feed port. Both sides of the first baffle are fixedly connected to the inner side wall of the mixing device. A first gap is provided between the upper and lower ends of the first baffle and the inner side wall of the mixing device. A second gap is provided between both sides of the second baffle and the inner side wall of the mixing device. The upper and lower ends of the first baffle are fixedly connected to the inner side wall of the mixing device.

4. The device for rapidly increasing the pH value of the resin suspension mixture according to claim 3, characterized in that: Control valves are provided on the replacement liquid feed pipe, the high-acidity resin suspension feed pipe, the neutral resin suspension transfer pipe, and the high-acidity wastewater discharge pipe.

5. The device for rapidly increasing the pH value of the resin suspension mixture according to claim 4, characterized in that: The filter screen is a planar structure adapted to the inner channel structure of the filtering device, and the filter screen is inclined at 45° within the filtering device. The resin suspension discharge pipe is perpendicular to the filtering device, and the resin suspension discharge pipe is connected to the bottom end of the filter screen.

6. The device for rapidly increasing the pH value of the resin suspension mixture according to claim 4, characterized in that: The resin suspension discharge pipe is inclined and connected to the filtering device at 45°. The filter screen is located on the extended surface of the outer wall of the resin suspension discharge pipe, and the port of the filter screen away from the resin suspension discharge pipe is fixedly connected to the inner channel of the filtering device.

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