Ion exchange resin pretreatment device

Abstract

The utility model relates to the field of water treatment, and discloses an ion exchange resin pretreatment device which comprises an exchange column used for containing ion exchange resin, a liquid inlet is formed in the top of the exchange column, a liquid outlet is formed in the bottom of the exchange column, a sealing plug is arranged at the liquid inlet, and a sand core is arranged at the position, close to the liquid outlet, in the exchange column; the middle bottle is arranged above the exchange column and used for storing flushing fluid, a balance opening is formed in the top of the middle bottle and communicated with the outside, a connecting pipe is arranged at the bottom of the middle bottle, and the connecting pipe penetrates through the sealing plug in a sealed mode and extends into the exchange column to enable the middle bottle to be communicated with the exchange column; the lower end of the liquid outlet is connected with an infusion pump to discharge waste liquid for washing the ion exchange resin. According to the technical scheme, the problem of liquid leakage caused by pressure intensity is solved, the use amount of an acid-base solution is ensured, flushing is more sufficient, and the transformation effect of resin is good; the liquid pump is used for discharging waste liquid for washing the resin, so that whole-course manual operation of operators is avoided, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the field of water treatment, and particularly to a pretreatment device for ion exchange resin. Background Art

[0002] Ion exchange resin is a widely used exchanger in the desalination system of power plant water treatment. Before detecting various performance indexes of ion exchange resin, it is necessary to pretreat the ion exchange resin. In the laboratory, the ion exchange resin is pretreated according to the regulations in the "Pretreatment Method for Ion Exchange Resin" (GB / T 5476-2013).

[0003] The device in the "Pretreatment Method for Ion Exchange Resin" (GB / T 5476-2013) is provided with a separating funnel above the exchange column, and a flushing liquid is added to the separating funnel to keep the liquid level of the flushing liquid always exceeding the ion exchange resin. The flushing speed is controlled by controlling the opening degree of the knobs below the separating funnel and the exchange column. During actual operation, due to the pressure difference, the flushing liquid will overflow at the interface between the separating funnel and the exchange column and at the knobs, which cannot ensure the dosage of acid-base solution, and the flushing is insufficient, affecting the transformation effect of the ion exchange resin. The operator also has to supervise the whole experiment process all the time to make the flushing liquid submerge the resin, and manually control the opening degree of the knob of the separating funnel to control the flushing speed, and the operation is complicated. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the problems existing in the prior art, such as leakage of liquid due to pressure during the addition of flushing liquid, insufficient flushing, affecting the transformation effect of ion exchange resin, and the need for operators to supervise the whole process and manually control the opening degree of the knob to control the flushing speed, and the operation is complicated.

[0005] In order to achieve the above purpose, the utility model provides a pretreatment device for ion exchange resin, including:

[0006] An exchange column for containing ion exchange resin, with a liquid inlet at the top and a liquid outlet at the bottom of the exchange column. A sealing plug is provided at the liquid inlet, and a sand core is provided near the liquid outlet in the exchange column; and,

[0007] An intermediate bottle is arranged above the exchange column for storing the flushing liquid. A balance port is provided at the top of the intermediate bottle and communicated with the outside. A connecting pipe is provided at the bottom of the intermediate bottle, and the connecting pipe is hermetically passed through the sealing plug and extends into the exchange column to connect the intermediate bottle with the exchange column. The lower end of the liquid outlet is connected to a liquid pumping pump to discharge the waste liquid for flushing the ion exchange resin.

[0008] In some embodiments, the pretreatment device for ion exchange resin further includes a liquid adding mechanism for adding the flushing liquid into the intermediate bottle.

[0009] In some embodiments, the liquid adding mechanism includes a liquid storage bottle and a liquid suction pump. The liquid storage bottle is used to store the flushing liquid. A liquid suction pipe is arranged between the liquid storage bottle and the inlet of the liquid suction pump. A liquid inlet pipe is arranged between the outlet of the liquid suction pump and the liquid inlet on the intermediate bottle. The liquid suction pump is used to add the flushing liquid in the liquid storage bottle into the intermediate bottle through the liquid suction pipe and the liquid inlet pipe.

[0010] In some embodiments, the liquid adding mechanism includes three liquid storage bottles, namely: an acid liquid storage bottle, an alkali liquid storage bottle, and a pure water liquid storage bottle. The three liquid storage bottles are respectively connected to the liquid suction pump through three liquid suction pipes.

[0011] In some embodiments, the liquid storage bottle is provided with a scale.

[0012] In some embodiments, the liquid suction pump is provided with a flow meter.

[0013] In some embodiments, the liquid extraction pump is provided with a flow meter.

[0014] In some embodiments, a liquid stop valve is arranged on the connecting pipe to control the on-off of the connecting pipe.

[0015] In some embodiments, a balance pipe is connected to the outside of the balance port.

[0016] In some embodiments, the ion exchange resin pretreatment device further includes a support frame for supporting the exchange column and the intermediate bottle.

[0017] Through the above technical solutions, a balance port is arranged on the intermediate bottle to communicate with the outside, solving the problem of liquid leakage caused by pressure, ensuring the dosage of acid-base solutions, more sufficient flushing, and good transformation effect of the resin; using a liquid extraction pump to discharge the waste liquid for flushing the ion exchange resin, avoiding the need for operators to manually operate throughout the process, and the operation is simple and convenient. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the main body of the ion exchange resin pretreatment device disclosed in the embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of the liquid adding mechanism disclosed in the embodiment of the present invention.

[0020] Description of the Reference Numerals

[0021] 1. Exchange column; 11. Sealing plug; 12. Sand core; 13. Drain port; 2. Intermediate bottle; 21. Connecting pipe; 22. Balance port; 23. Liquid inlet; 24. Liquid stop valve; 25. Balance pipe; 3. Liquid suction pump; 31. Liquid suction pipe; 32. Liquid inlet pipe; 4. Acid liquid storage bottle; 5. Alkali liquid storage bottle; 6. Pure water liquid storage bottle; 7. Liquid extraction pump; 8. Support frame. Detailed Embodiments

[0022] In the present utility model, unless otherwise specified, the orientation terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0023] To solve the problems existing in the prior art, such as insufficient flushing caused by liquid leakage and inconvenience for operators to manually control the flow rate throughout the process, the present utility model provides an ion exchange resin pretreatment device, including: an exchange column 1 for containing ion exchange resin, with a liquid inlet at the top of the exchange column 1 and a drain port 13 at the bottom. A sealing plug 11 is provided at the liquid inlet, and a sand core 12 is provided near the drain port 13 inside the exchange column 1; and an intermediate bottle 2 disposed above the exchange column 1 for storing the flushing liquid. A balance port 22 is provided at the top of the intermediate bottle 2 and is communicated with the outside. A connecting pipe 21 is provided at the bottom of the intermediate bottle 2, and the connecting pipe 21 penetrates through the sealing plug 11 in a sealed manner and extends into the exchange column 1 to connect the intermediate bottle 2 with the exchange column 1. The lower end of the drain port 13 is connected to a liquid extraction pump 7 to discharge the waste liquid for flushing the ion exchange resin.

[0024] As Figure 1 shown, the intermediate bottle 2, the connecting pipe 21 and the exchange column 1 are sealed, and a balance port 22 is provided at the top of the intermediate bottle 2 and is communicated with the outside. The flushing liquid can flow out smoothly from the drain port 13 without liquid leakage caused by pressure problems. The liquid extraction pump 7 is turned on to discharge the waste liquid for flushing the ion exchange resin, and the flushing speed is controlled by controlling the drainage speed of the liquid extraction pump 7, avoiding the need for operators to manually operate throughout the process and making the operation simpler and more convenient. The sealing plug 11 can be a rubber plug of the prior art, with a hole drilled in the middle, and the connecting pipe 21 is kept sealed with the sealing plug 11. The sand core 12 can be a microporous sand core of the prior art, used for filtering impurities and particles, preventing the resin from being contaminated, facilitating the passage of the flushing liquid, improving the adsorption efficiency and service life of the resin. At the same time, it can also fix the resin to avoid damage to the resin caused by the impact and flow of the flushing liquid.

[0025] In some embodiments, the ion exchange resin pretreatment device further includes a liquid adding mechanism for adding a rinsing liquid into the intermediate bottle 2. During rinsing, the required rinsing liquid is added into the intermediate bottle 2 at one time, filling the intermediate bottle 2 and the connecting pipe 21 up to the intermediate bottle 2, so that the liquid level of the rinsing liquid is always above the ion exchange resin, without the need for manual supervision and without the need to control the adding speed of the rinsing liquid. The rinsing liquid can also be added in several portions, keeping the liquid level of the rinsing liquid always above the ion exchange resin when the liquid waste is discharged by the liquid pumping pump 7; or adding the liquid while discharging the liquid waste with the liquid pumping pump 7 to keep the liquid level of the rinsing liquid always above the ion exchange resin.

[0026] In some embodiments, as Figure 2 shown, the liquid adding mechanism includes a liquid storage bottle and a liquid suction pump 3. The liquid storage bottle is used for storing the rinsing liquid. A liquid suction pipe 31 is provided between the liquid storage bottle and the inlet of the liquid suction pump 3, and a liquid inlet pipe 32 is provided between the outlet of the liquid suction pump 3 and the liquid inlet 23 on the intermediate bottle 2. The liquid suction pump 3 is used for adding the rinsing liquid in the liquid storage bottle into the intermediate bottle 2 through the liquid suction pipe 31 and the liquid inlet pipe 32. The rinsing liquid can also be manually added into the intermediate bottle 2.

[0027] In some embodiments, as Figure 2 shown, the liquid adding mechanism includes three liquid storage bottles, namely: an acid liquid storage bottle 4, an alkali liquid storage bottle 5, and a pure water liquid storage bottle 6. The rinsing liquid in the acid liquid storage bottle 4 is 1 mol / L HCL solution or 1 mol / L H2SO4 solution specified in GB / T5476 - 2013, the rinsing liquid in the alkali liquid storage bottle 5 is 1 mol / L NaOH solution specified in GB / T 5476 - 2013, and the rinsing liquid in the pure water liquid storage bottle 6 is laboratory water meeting the requirements. The three liquid storage bottles are respectively connected to the liquid suction pump 3 through three liquid suction pipes 31. The liquid suction pump 3 adds the rinsing liquids in the three liquid storage bottles into the intermediate bottle 2 through their corresponding liquid suction pipes 31. The liquid suction pipes 31 and the liquid inlet pipe 32 at both ends of the liquid suction pump 3 form a three-in-one pipe, adding all three solutions into the intermediate bottle 2 through the liquid inlet pipe 32.

[0028] In some embodiments, the liquid storage bottle is provided with a scale. The volume of the reduced liquid can be calculated through the scale of the liquid storage bottle, which is the volume of the solution added into the intermediate bottle 2. Open the liquid suction pump 3 to add the rinsing liquid in the liquid storage bottle into the intermediate bottle 2. When the volume of the reduced liquid in the liquid storage bottle reaches the required amount, close the liquid suction pump 3.

[0029] In some embodiments, the liquid suction pump 3 is provided with a flow meter. Through the flow rate of the rinsing liquid shown by the flow meter, the rinsing liquid can be added at any flow rate, and the time required to add the required rinsing liquid can be calculated through the flow rate. After reaching the required time, close the liquid suction pump 3.

[0030] In some embodiments, the liquid extraction pump 7 is provided with a flow meter, and the flow rate of the waste liquid discharge is calculated according to the flushing time specified in GB / T 5476-2013, and the speed is measured by the flow meter.

[0031] In some embodiments, as Figure 1 shown, a liquid stop valve 24 is provided on the connecting pipe 21 to control the on / off of the connecting pipe 21, and the air bubbles are expelled when there are air bubbles in the exchange column 1. When there is flushing liquid in the exchange column 1, the presence of air bubbles will result in poor flushing effect. Therefore, the liquid stop valve 24 is provided to expel the air bubbles by controlling the on / off of the connecting pipe 21. The liquid stop valve 24 can be opened or closed when adding the flushing liquid to the intermediate bottle 2. When the liquid stop valve 24 is opened, the flushing liquid is directly added to the exchange column 1, filling the exchange column 1 and the connecting pipe 21 to the intermediate bottle 2, and there is no need to control the opening degree of the liquid stop valve 24, and it can be fully opened or partially opened; when the liquid stop valve 24 is closed, the flushing liquid is added to the intermediate bottle 2, and after the liquid addition is completed, the liquid stop valve 24 is opened to make the flushing liquid in the liquid stop valve 24 enter the exchange column 1, filling the exchange column 1 and the connecting pipe 21 to the intermediate bottle 2.

[0032] In some embodiments, as Figure 1 shown, a balance pipe 25 is connected to the outside of the balance port 22 to prevent the flushing liquid from splashing out of the balance port 22. When adding the flushing liquid to the intermediate bottle 2, the flushing liquid may splash out of the balance port 22. Since the flushing liquid includes acid solution and alkali solution, the splashing will fall on the experimental table and corrode the experimental table or splash on the operator's body causing physical harm. Therefore, the balance pipe 25 makes the splashed flushing liquid reach the inner wall of the balance pipe 25 and then flow back into the intermediate bottle 2 again.

[0033] In some embodiments, as Figure 1 shown, the ion exchange resin pretreatment device further includes a support frame 8 for supporting the exchange column 1 and the intermediate bottle 2, so that the exchange column 1 and the intermediate bottle 2 remain stable during the whole operation process. As Figure 1 shown, the exchange column 1 and the intermediate bottle 2 are fixed to the iron stand with an iron ring, and any support frame of the existing technology can also be used.

[0034] During actual operation, the ion exchange resin to be tested is filled above the sand core 12 in the exchange column 1. The liquid extraction pump 7 is turned off, and the liquid suction pump 3 is turned on. According to the order of adding the rinsing liquid in GB / T 5476-2013, the total amount of the required acid solution or alkali solution is added to the intermediate bottle 2 from the acid storage bottle 4 or the alkali storage bottle 5 at one time through the liquid suction pipe 31 and the liquid inlet pipe 32. The stop valve 24 remains open, and the acid solution or alkali solution will fill the exchange column 1 and the connecting pipe 21 to the intermediate bottle 2. If there are air bubbles in the exchange column 1, the air bubbles are expelled by opening and closing the stop valve 24. After the liquid addition is completed, the liquid extraction pump 7 is turned on to calculate the required flow rate according to the rinsing time specified in GB / T 5476-2013, and the waste liquid is discharged at the required flow rate. After discharging the waste liquid, the pure water in the pure water storage bottle 6 is added to the intermediate bottle 2 by the liquid suction pump 3, and the above steps are repeated according to the requirements in GB / T 5476-2013 until all the required rinsing liquids are added and rinsed. Since the acid-base rinsing liquid is added to the exchange column 1 and the intermediate bottle 2 at one time, there may be residual acid-base rinsing liquid on the wall, and an appropriate amount of the subsequent added rinsing liquid can be added more. In addition, if the residual acid-base solution on the wall is not rinsed clean by the subsequent pure water rinsing liquid, it will affect the measurement of the acidity and alkalinity of the solution using phenolphthalein indicator and methyl orange indicator at the end. Therefore, when rinsing with pure water for the last time, an appropriate amount of pure water rinsing liquid can be added more to ensure that there is no residual acid-base rinsing liquid on the wall.

[0035] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept scope of the present invention, various simple modifications can be made to the technical solutions of the present invention, including the combination of each specific technical feature in any suitable manner. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. But these simple modifications and combinations should also be regarded as the content disclosed by the present invention and all fall within the protection scope of the present invention.

Claims

1. An ion exchange resin pretreatment device, characterized in that: include: An exchange column (1), the exchange column (1) being used to hold ion exchange resin, the exchange column (1) being provided with a liquid inlet at the top and a liquid discharge port (13) at the bottom, a sealing plug (11) being provided at the liquid inlet, and a sand core (12) being provided in the exchange column (1) at a position close to the liquid discharge port (13); and, An intermediate bottle (2) is arranged above the exchange column (1) and is used to store flushing liquid. A balance port (22) is provided at the top of the intermediate bottle (2) for communicating with the outside. A connecting pipe (21) is provided at the bottom of the intermediate bottle (2). The connecting pipe (21) is sealed through the sealing plug (11) and extends into the exchange column (1) to connect the intermediate bottle (2) with the exchange column (1). The lower end of the liquid discharge port (13) is connected to a liquid pump (7) to discharge the waste liquid used to flush the ion exchange resin.

2. The ion exchange resin pretreatment device according to claim 1, characterized in that: The ion exchange resin pretreatment device also includes a liquid adding mechanism, which is used to add flushing liquid into the intermediate bottle (2).

3. The ion exchange resin pretreatment device according to claim 2, characterized in that: The liquid adding mechanism comprises a liquid storage bottle and a liquid suction pump (3), wherein the liquid storage bottle is used to store flushing liquid, a liquid suction tube (31) is arranged between the liquid storage bottle and the inlet of the liquid suction pump (3), and a liquid inlet tube (32) is arranged between the outlet of the liquid suction pump (3) and the liquid inlet (23) on the intermediate bottle (2), and the liquid suction pump (3) is used to add the flushing liquid in the liquid storage bottle into the intermediate bottle (2) through the liquid suction tube (31) and the liquid inlet tube (32).

4. The ion exchange resin pretreatment device according to claim 3, characterized in that: The liquid adding mechanism comprises three liquid storage bottles, namely: an acid liquid storage bottle (4), an alkali liquid storage bottle (5), and a pure water liquid storage bottle (6). The three liquid storage bottles are connected to the liquid suction pump (3) through three liquid suction tubes (31) respectively.

5. The ion exchange resin pretreatment device according to claim 3, characterized in that: The liquid storage bottle is provided with a scale.

6. The ion exchange resin pretreatment device according to claim 3, characterized in that: The liquid suction pump (3) is provided with a flow meter.

7. The ion exchange resin pretreatment device according to claim 1, characterized in that: The liquid extraction pump (7) is provided with a flow meter.

8. The ion exchange resin pretreatment device according to claim 1, characterized in that: The connecting pipe (21) is provided with a liquid stop valve (24) to control the opening and closing of the connecting pipe (21).

9. The ion exchange resin pretreatment device according to claim 1, characterized in that: The outer side of the balancing port (22) is connected to a balancing pipe (25).

10. The ion exchange resin pretreatment device according to any one of claims 1 to 9, characterized in that: The ion exchange resin pretreatment device also includes a support frame (8) for supporting the exchange column (1) and the intermediate bottle (2).

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