Ion exchange resin pretreatment and cleaning apparatus

Abstract

The utility model discloses a kind of ion exchange resin pretreatment and cleaning device, the pretreatment and cleaning device includes ultrapure water tank, resin containing and cleaning tank, resin tower and pretreatment liquid tank, wherein the ultrapure water tank, water pump, resin containing and cleaning tank and waste liquid tank are connected, and can be used for the preliminary cleaning of ion exchange resin;Resin containing and cleaning tank are connected with the upper end of resin tower, and resin can be sent into resin tower and discharged from resin tower using ultrapure water water pressure;The ultrapure water tank, water pump and the lower end of resin tower are connected, and can be used for resin cleaning;The pretreatment liquid tank, pretreatment pump, resin tower and waste liquid tank are connected, and can be used for the pretreatment of resin;The ion exchange resin pretreatment and cleaning device can complete resin filling without disassembly, in addition, the whole pretreatment process is simple to operate, high efficiency, safe, and not by external environment pollution, can effectively maintain the cleanliness of resin.

Description

Technical Field

[0001] This utility model relates to the field of ion exchange resin pretreatment and cleaning, specifically to an ion exchange resin pretreatment and cleaning device. Background Technology

[0002] Ion exchange resins are insoluble polymeric compounds with a network structure containing ion exchange groups on their polymer backbone; they are typically spherical particles. Ion exchange resins are widely used in water treatment, pharmaceuticals, food processing, and electronics industries, especially in wet electronic chemicals to remove trace ionic impurities and improve product purity. Before use, ion exchange resins usually require pretreatment to remove impurities such as monomers, crosslinking agents, pore-forming agents, and dispersants remaining from the resin production process. Furthermore, pretreatment can activate the active groups of the resin, placing them in a suitable ionic state (e.g., converting cation exchange resins to H+). + Type, anion exchange resin converts to OH - type).

[0003] In existing ion exchange resin regeneration devices, the resin tower needs to be disassembled during resin loading and unloading, which is not only time-consuming and labor-intensive but also poses certain safety risks. Furthermore, the pretreatment process often employs static soaking or circulating feeding methods, which result in low resin treatment efficiency and cannot guarantee the treatment effect. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides an ion exchange resin pretreatment and cleaning device. This device uses ultrapure water pressure to send the resin into the resin tower and then discharges the resin through the resin discharge port. The entire resin pretreatment process does not require disassembly of the device. In addition, during the pretreatment process, high-purity nitrogen gas is introduced into the resin tower, which not only agitates the resin to make it evenly distributed, but also increases the pressure inside the resin tower to increase the pretreatment efficiency. The whole process is simple, safe and efficient.

[0005] To achieve the above-mentioned technical effects, this utility model provides an ion exchange resin pretreatment and cleaning device, comprising: The ultrapure water tank is equipped with an ultrapure water tank outlet pipe at the top. The resin holding and cleaning tank is equipped with an overflow pipe, a water inlet pipe and a filter plate valve at the bottom, and a water pump is provided between the ultrapure water tank and the resin storage and cleaning tank. The water pump is connected to the resin holding and cleaning tank through a T-junction. The resin tower has an upper drain pipe and an exhaust pipe at its top, each equipped with a drain valve and an exhaust valve, respectively. The water outlet pipe is connected to a waste liquid tank. The lower end of the resin tower has a lower inlet pipe and an air inlet pipe. The air inlet pipe is equipped with a valve and connected to a high-purity nitrogen storage tank, suitable for blowing high-purity nitrogen into the resin in the resin tower. The lower end of the resin tower also has a resin outlet pipe and a resin discharge valve. The resin tower bottom inlet pipe is connected to the water pump outlet valve, and is also connected to the water pump and ultrapure water tank through pipelines, which facilitates resin cleaning after pretreatment.

[0006] The pretreatment liquid tank has a water outlet pipe at the top that is sealed to the pretreatment liquid tank. A pretreatment pump is installed between the pretreatment liquid tank and the resin tower. A valve is installed between the pretreatment pump and the resin tower. A weighbridge is installed at the bottom of the pretreatment liquid tank to facilitate the preparation of pretreatment liquid and control the amount of pretreatment liquid used.

[0007] Furthermore, the bottom tee of the resin container and cleaning tank is connected to the ultrapure water tank and the resin tower respectively, and a filter plate valve is provided between the resin tower and the tee to control the passage of resin particles.

[0008] Furthermore, porous filter plates are provided at both the bottom and top of the resin tower, with filter cloth installed in the middle of the filter plates. The pore size of the filter cloth is smaller than the diameter of the resin.

[0009] Furthermore, the porous filter plate at the bottom of the resin tower can also be used as a gas distributor.

[0010] Furthermore, the resin tower bottom inlet pipe is connected to the water pump outlet valve, and is also connected to the water pump and ultrapure water tank through pipelines, which facilitates resin cleaning after pretreatment.

[0011] Furthermore, the resin container and cleaning tank is equipped with an overflow pipe connected to the waste liquid tank at the top, which facilitates resin cleaning.

[0012] The technical solution of this utility model has the following advantages: 1. The pretreatment and cleaning device for ion exchange resin provided by this utility model, wherein the resin holding and cleaning tank can be controlled by the filter plate valve to pre-wash the resin with ultrapure water, and discharge the foam and other particulate matter mixed in the resin through the overflow port to avoid entering the resin tower and contaminating the resin tower.

[0013] 2. The ion exchange resin pretreatment and cleaning device provided by this utility model has a filter plate valve at the lower end of the resin holding and cleaning tank. After the resin is initially cleaned, the filter plate valve is opened, and then the water pump is turned on to use ultrapure water pressure to send the resin into the resin tower. After the resin is treated, it is discharged through the resin discharge port. The entire resin pretreatment process does not require disassembly of the device, and the pretreatment process is efficient and safe. 3. The pretreatment and cleaning device for ion exchange resin provided by this utility model has porous filter plates at both the bottom and top of the resin tower. Filter cloth is installed in the middle of the filter plates. The pore size of the filter cloth is smaller than the resin diameter. The filter cloth prevents the resin from flowing out. At the same time, the filter plates and filter cloth can also serve as gas distributors. Injecting high-purity nitrogen into the resin tower not only provides power to agitate the resin but also increases the pressure inside the resin tower, thereby increasing the pretreatment efficiency.

[0014] 4. The pretreatment and cleaning device for ion exchange resin provided by this utility model, wherein the resin is connected to an ultrapure water tank, which facilitates cleaning of the resin after pretreatment.

[0015] 5. The pretreatment and cleaning device for ion exchange resin provided by this utility model has a weighbridge at the bottom of the pretreatment liquid tank, which can facilitate the preparation of a certain concentration of pretreatment liquid, improve the preparation efficiency of pretreatment liquid, and also facilitate the control of the amount of pretreatment liquid used during resin treatment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the ion exchange resin pretreatment and cleaning device provided by this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1. Ultrapure water tank; 22. Ultrapure water tank outlet pipe; 21. Water pump outlet pipe; 2. Water pump; 3. Filter plate valve; 4. Resin container and cleaning tank; 41. Upper outlet pipe of resin container and cleaning tank; 42. Lower inlet pipe of resin container and cleaning tank; 5. Resin feed valve; 6. Resin tower; 61. Upper drain pipe of resin tower; 62. Upper exhaust pipe of resin tower; 63. Lower air inlet pipe of resin tower; 64. Lower liquid inlet pipe of resin tower; 65. Lower discharge pipe of resin tower; 7. Exhaust valve; 8. Upper drain valve of resin tower; 9. Resin discharge valve; 10. Air inlet valve; 11. Overflow valve of resin container and cleaning tank; 12. Waste liquid tank; 13. Pretreatment pump outlet valve; 14. Water pump outlet valve; 15. Pretreatment pump; 16. Pretreatment liquid tank; 161. Pretreatment liquid tank outlet pipe; 17. Weighbridge. Detailed Implementation

[0018] The embodiments of this utility model will be described in detail below with reference to the examples. The following examples are only used to illustrate this utility model and should not be regarded as limiting the scope of this utility model.

[0019] Example like Figure 1As shown, the core of this utility model is to provide an ion exchange resin pretreatment and cleaning device, including an ultrapure water tank 1, a resin holding and cleaning tank 4, a resin tower 6, and a pretreatment liquid tank 16. The ultrapure water tank has an outlet pipe 22 at its upper part, which is connected to a water pump 2. The resin holding and cleaning tank 4 has an overflow pipe 41 at its upper end, which is connected to a waste liquid tank and equipped with a waste liquid valve 11. The resin holding and cleaning tank 4 has a filter plate valve 3 at its bottom, and an inlet pipe 42 is provided between the resin holding and cleaning tank 4 and the filter plate valve 3. The resin tower 6 has a drain valve 8 and an exhaust valve 7 at its top, which are respectively connected to the outlet pipe 61 and the exhaust pipe. The drain valve 8... The resin tower 6 is connected to the waste liquid 12. The lower end of the resin tower 6 is equipped with a water outlet pipe 64 and an air inlet pipe 63. The air inlet pipe 63 is equipped with a valve 10 connected to a high-purity nitrogen storage tank, which is suitable for blowing high-purity nitrogen into the resin of the resin tower. A valve 14 is provided between the water outlet pipe 64 and the water pump 2. The lower end of the resin tower 6 is equipped with a resin discharge pipe 65 and a valve 9 for discharging resin. The top of the pretreatment liquid tank 16 is equipped with a water outlet pipe 161 that is sealed to the pretreatment liquid tank. A pretreatment pump 15 is provided between the pretreatment liquid tank 16 and the resin tower 6. A valve 13 is provided between the pretreatment pump 15 and the resin tower 6. A weighbridge 17 is provided at the lower end of the pretreatment liquid tank to facilitate the identification of the pretreatment liquid and control the amount of pretreatment liquid used.

[0020] Furthermore, the bottom tee of the resin container and cleaning tank 4 is connected to the ultrapure water tank 1 and the resin tower 6 respectively, and a valve 5 is provided between the resin tower 6 and the tee to control the passage of resin particles.

[0021] Furthermore, the resin tower 6 is equipped with porous filter plates at both the bottom and top, with filter cloth installed in the middle of the filter plates. The pore size of the filter cloth is smaller than the diameter of the resin.

[0022] Furthermore, the porous filter plate at the bottom of resin tower 6 can also be used as a gas distributor.

[0023] Furthermore, the bottom water inlet pipe 64 of the resin tower 6 is connected to the valve 14, and is also connected to the water pump 2 and the ultrapure water tank 1 through the pipe 21, which facilitates the cleaning of the resin after pretreatment.

[0024] Furthermore, the resin container and cleaning tank 4 is equipped with an overflow pipe 41 connected to the waste liquid tank 12 at the top, which facilitates resin cleaning.

[0025] The ion exchange resin pretreatment and cleaning apparatus provided in the above embodiments is mainly used to improve the cleanliness of ion exchange resins for the preparation of high-purity wet electronic chemicals.

[0026] Combination Figure 1 The working process of the ion exchange resin pretreatment and cleaning device provided in the above embodiment includes the following steps: Step 1: Preliminary cleaning and packing of the resin column First, open the lower valve 3 and the upper overflow valve 11 of the resin container and cleaning tank, close valves 5 and 14, turn on the water pump 2 to input the ultrapure water in the ultrapure water tank into the resin container and cleaning tank, control the flow rate to keep the resin tumbling and cleaning without flowing out of the resin container and cleaning tank, clean until there is no foam or particulate impurities in the overflow outlet water, and discharge the cleaning wastewater to the waste liquid tank 12. Then, close the overflow valve 11, and simultaneously close the resin tower discharge valve 9, air inlet valve 10, and pretreatment pump outlet valve 13. Keep valve 14 closed. Open the filter plate valve 3 and resin feed valve 5 at the lower end of the resin container and cleaning tank. Open the drain valve 8 and exhaust valve 7 at the upper end of the resin tower. Turn on the water pump 2 to flush the resin into the resin tower 6 using ultrapure water. After the resin is filled, close the filter plate valve 3 and resin feed valve 5 at the lower end of the resin container and cleaning tank.

[0027] Step 2: Resin column packing and rinsing First, open the outlet valve 14 of water pump 2, the drain valve 8 at the top of the resin tower, and the exhaust valve 7. Keep the filter plate valve 3 at the bottom of the resin container and cleaning tank, the resin feed valve 5, the pretreatment pump outlet valve 13, and the resin tower discharge valve 9 closed. Turn on water pump 2 to input ultrapure water into the inlet pipe 64 of resin tower 6, and then output it from the outlet pipe 61 at the top of resin tower 6 to the waste liquid tank 12. Stop resin cleaning when the conductivity of the washing liquid no longer changes.

[0028] Step 3: Resin Pretreatment First, prepare a high-purity acid or alkali pretreatment solution of a certain concentration in the pretreatment liquid tank. Then, close the outlet valve 14 of water pump 2, keep the filter plate valve 3 at the bottom of the grease container and cleaning tank, the resin feed valve 5 and the resin tower discharge valve 9 closed, open the pretreatment pump outlet valve 13, open the pretreatment pump 15, and transport the pretreatment liquid in the pretreatment liquid tank 16 to the inlet pipe 64 of the resin tower 6. Then, output it from the outlet pipe 61 at the top of the resin tower 6 to the waste liquid tank 12, and control the amount of pretreatment liquid used by the weighbridge 17. During the process, open the resin tower air inlet valve 10 and the exhaust valve 7.

[0029] Step 4: Rinse after resin pretreatment First, close the pretreatment pump 15 and the pretreatment pump discharge valve 13, while keeping the filter plate valve 3 at the bottom of the receiving and cleaning tank, the resin feed valve 5, the resin tower air inlet valve 10, and the resin tower discharge valve 9 closed. Then, open the water pump 2 outlet valve 14, the resin tower upper drain valve 8, and the exhaust valve 7. Turn on the water pump 2 to input ultrapure water into the resin tower 6 inlet pipe 64, and then output it from the resin tower 6 upper outlet pipe 61 to the waste liquid tank 12. Stop the resin cleaning when the conductivity of the washing liquid no longer changes, thus completing the ion exchange resin pretreatment and cleaning process. Finally, close the water pump 2 outlet valve 14, the resin tower upper drain valve 8, and the exhaust valve 7. Then, open the resin tower feed valve 5 and the resin tower discharge valve 9, and turn on the water pump 2 to discharge the resin from the resin tower 6 using ultrapure water. Collect the resin for later use.

[0030] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A device for pretreatment and cleaning of ion exchange resin, characterized in that, include: An ultrapure water tank (1) is provided with an ultrapure water tank outlet pipe (22) on the top; The resin holding and cleaning tank (4) is equipped with an overflow pipe (41) and a water inlet pipe (42) at the bottom. A water pump (2) is provided between the ultrapure water tank and the resin storage and cleaning tank. The water pump is connected to the resin holding and cleaning tank through a T-junction. The resin tower (6) is provided with a top liquid drain pipe (61) and an exhaust pipe (62) at the top of the resin tower, and is provided with a liquid drain valve (8) and an exhaust valve (7) respectively. The water outlet pipe is connected to the waste liquid tank (12). The bottom of the resin tower is provided with a bottom liquid inlet pipe (64) and an air inlet pipe (63). The air inlet pipe is provided with an air inlet valve (10) connected to a high-purity nitrogen storage tank, which is suitable for blowing high-purity nitrogen into the resin of the resin tower. A pretreatment liquid tank (16) is provided at the top with a pretreatment liquid tank outlet pipe (161) that is sealed to the pretreatment liquid tank. A pretreatment pump (15) is provided between the pretreatment liquid tank and the resin tower.

2. The ion exchange resin pretreatment and cleaning apparatus according to claim 1, characterized in that, The bottom tee of the resin container and cleaning tank (4) is connected to the ultrapure water tank (1) and the resin tower (6) respectively, and a resin feed valve (5) is provided between the resin tower (6) and the tee to control the passage of resin particles.

3. The ion exchange resin pretreatment and cleaning apparatus according to claim 1, characterized in that, The resin tower (6) is equipped with porous filter plates at both the bottom and top, with filter cloth in the middle of the filter plates. The pore size of the filter cloth is smaller than that of the resin.

4. The ion exchange resin pretreatment and cleaning apparatus according to claim 3, characterized in that, The porous filter plate at the bottom of the resin tower (6) is used as a gas distributor.

5. The ion exchange resin pretreatment and cleaning apparatus according to claim 1, characterized in that, The lower end of the resin tower is equipped with a resin discharge pipe (65) and a resin discharge valve (9).

6. The ion exchange resin pretreatment and cleaning apparatus according to claim 1, characterized in that, The resin tower (6) has a bottom inlet pipe (64) connected to the water pump outlet valve (14), and is connected to the water pump (2) and ultrapure water tank (1) through a pipe (21) to facilitate resin cleaning after pretreatment.

7. The ion exchange resin pretreatment and cleaning apparatus according to claim 1, characterized in that, The resin container and cleaning tank (4) is equipped with an overflow pipe (41) connected to the waste liquid tank (12) at the top, which facilitates resin cleaning.

8. The ion exchange resin pretreatment and cleaning apparatus according to claim 1, characterized in that, A pretreatment pump outlet valve (13) is provided between the pretreatment pump (15) and the resin tower, and a weighbridge (17) is provided at the lower end of the pretreatment liquid tank to facilitate control of the amount of pretreatment liquid used.

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