Ion exchange resin infiltration ball rate detection method and batch processing device

Abstract

A method for detecting the roundness of ion exchange resin infiltration grinding and a batch processing device. Under artificial conditions, the method allows osmotic pressure, water flow impact, friction and pressure to act on the ion exchange resin together to detect the particle integrity of the resin particles after being subjected to force, thereby reflecting the mechanical strength of the resin. The present invention also discloses an ion exchange resin infiltration grinding roundness detection and processing device, which is composed of a treatment agent storage module, a resin storage module, a dosing module, and a control module. The control module automatically adjusts the type of treatment agent, the dosage, the dosing sequence and other parameters according to the different types of resins. The present invention can meet the processing requirements of different types of ion exchange resin infiltration roundness tests, and realize the batch, automation and intelligence of ion exchange resin infiltration roundness processing, reduce the errors that may be caused by manual operation, improve the test efficiency of ion exchange resin infiltration roundness and reduce the labor intensity of testers.

Description

Technical Field

[0001] The invention belongs to the technical field of ion exchange resin detection, and in particular relates to a method for detecting the roundness rate of ion exchange resin infiltration and grinding and a batch processing device. Background Art

[0002] Ion exchange resins are widely used in chemical, pharmaceutical, water treatment and other fields. During use, some resin particles will break due to the impact of water flow, friction between resin particles, collision between resin particles and containers, and osmotic pressure during the transformation process. The breakage of resin particles will cause resin loss and contamination of subsequent devices. Therefore, accurate detection of the mechanical strength of resin particles is an important part of resin performance evaluation.

[0003] The existing test of the mechanical strength of ion exchange resin is limited to the mechanical strength of resin particles under a single impact force, which cannot reflect the mechanical strength of resin particles in daily complex environments. If you want to objectively test the mechanical strength of resin particles, you must first simulate the various impacts that the resin may suffer in daily use as realistically as possible, and then accurately measure the roundness rate of the resin particles after the impact. Summary of the invention

[0004] In order to overcome the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide an ion exchange resin infiltration roundness rate detection method and batch processing device, which can meet the processing requirements of different types of ion exchange resin infiltration roundness rate tests, and realize the batch, automation and intelligence of ion exchange resin infiltration roundness rate processing, reduce the errors that may be caused by manual operation, improve the test efficiency of ion exchange resin infiltration roundness rate and reduce the labor intensity of testers. .

[0005] A method for detecting the roundness rate of ion exchange resin infiltration grinding comprises the following steps:

[0006] Step 1: Measure 10-20 mL of resin;

[0007] Step 2: Rapidly flush the resin with a treatment agent twice the volume of the resin, repeat several times to allow the resin to be impacted by the water flow;

[0008] Step 3: Flushing with a treatment agent 18 to 22 times the volume of the resin causes a change in the ionic form of the resin. The volume of the resin particles changes with the change in form. The change in the volume of the resin particles causes the resin particles to be subjected to osmotic pressure.

[0009] Step 4: Rinse the resin with deionized water 18 to 22 times the volume of the resin to remove the treatment agent in the resin;

[0010] Step 5: Rapidly flush with another treatment agent twice the volume of the resin, repeat several times to allow the resin to be impacted by water flow again;

[0011] Step 6: Flushing with another treatment agent 18 to 22 times the volume of the resin causes the ionic form of the resin to change again, causing the resin particles to be subjected to an osmotic pressure again;

[0012] Step 7: Rinse the resin with deionized water 18 to 22 times the volume of the resin to remove the treatment agent in the resin;

[0013] Step 8: Transfer the resin to the drum with deionized water 3 times the volume of the resin, and add ceramic balls for tumbling;

[0014] Step 9: Transfer the tumbled resin to gauze and dry until the particles can roll freely, and separate the intact particles from the broken particles;

[0015] Step 10: Weigh the masses of intact particles and broken particles respectively, and calculate the spherical grinding rate: spherical grinding rate = mass of spherical part / (mass of spherical part + mass of broken part) × 100%.

[0016] The treatment agent is a solution that can change the form of the ion exchange resin, and the solution is an acid solution or an alkaline solution with a concentration of 1 mol / L; when the treatment agent used in step 2 and step 3 is an acid solution, the other treatment agent used in step 5 and step 6 is an alkaline solution, and vice versa.

[0017] The flow rate of the treatment agent was 32 mL / min.

[0018] The roller is made of brass, with a height of 125 mm, a diameter of 95 mm, a wall thickness of 5 mm, and a 2 mm thick rubber pad on the inner side of the cylinder cover.

[0019] The number of porcelain balls added is 6 to 10, the diameter of the porcelain balls is 20 mm, the mass is 10 g, and the rolling time is 10 to 20 minutes.

[0020] Transfer the dried resin to the upper left corner of the enamel tray, lift the upper edge of the enamel tray so that the resin spheres can roll down with slight vibrations while the broken particles cannot roll, and use a brush to gently stir the resin until the spheres and broken particles are completely separated.

[0021] A batch processing device for realizing the ion exchange resin infiltration roundness detection method is composed of a processing agent storage module A, a dosing module C, a control module B and a resin storage module D, and each module is connected by a corrosion-resistant pipeline;

[0022] The treatment agent storage module A is composed of a series of corrosion-resistant containers A1 respectively containing deionized water and treatment agents. The number of containers A1 increases or decreases according to the specific type of resin. The outlet of the container A1 is connected to the inlet of the multi-channel switching valve through a corrosion-resistant pipeline.

[0023] The control module B is composed of a controller B2 and a multi-channel switching valve B1;

[0024] The dosing module C is composed of a dosing pump C1 and pipelines, which guide the solution in the treatment agent storage module to the funnel of the resin storage module through the multi-channel switching valve B1;

[0025] The resin storage module D is an exchange column 3 with a porous partition 4, a funnel 1 and an electromagnetic valve 2 at the bottom of the funnel 1 are mounted on the top of the exchange column 3, and are connected to the exchange column 3 through a rubber stopper; a tee 5 is connected at the outlet of the exchange column 3, one end of the tee is connected to a U-shaped tube 7, and the height of the U-shaped tube is adjusted to make the liquid level of deionized water or treatment agent in the exchange column 1 to 2 cm higher than the upper end of the resin layer; to prevent the liquid level in the exchange column from being lower than the upper end of the resin layer, resulting in insufficient treatment; a drain electromagnetic valve 6 is set at the other end of the tee to empty the agent in the exchange column; the electromagnetic valve 2 and the drain electromagnetic valve 6 are both controlled by the controller of the control module B.

[0026] The ion exchange resin batch processing device can be expanded by parallel connection to achieve the function of batch processing different types of ion exchange resins for determining the infiltration and grinding roundness rate using different methods.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] 1. The method for detecting the roundness of ion exchange resin provided by the present invention can simulate both the external force impact on the resin during use and the osmotic pressure on the resin due to its own volume change, thereby comprehensively simulating various factors that may cause the resin particles to break.

[0029] 2. The method for detecting the roundness rate of ion exchange resin provided by the present invention can adjust the type of treatment agent to apply osmotic pressure to different types of resins.

[0030] 3. The method for detecting the sphericity of ion exchange resins provided by the present invention can accurately obtain the sphericity of resin particles after being impacted, thereby truly reflecting the mechanical strength of the resin and facilitating an objective evaluation of the performance of the ion exchange resin.

[0031] 4. The method for detecting the roundness rate of ion exchange resin infiltration provided by the present invention has good result reproducibility and can reduce data fluctuations caused by different operating habits of personnel.

[0032] 5. The ion exchange resin infiltration ball batch treatment device provided by the present invention can automatically maintain the liquid level of deionized water or treatment agent in the exchange column to avoid insufficient treatment caused by the liquid level of deionized water or treatment agent being lower than the resin layer.

[0033] 6. The ion exchange resin infiltration ball batch processing device provided by the present invention can apply osmotic pressure to multiple groups of different types of resins, greatly reducing the workload of the processing process, improving the processing efficiency, and avoiding abnormal results caused by human operating errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of an ion exchange resin batch processing device of the present invention;

[0035] Figure 2 is a schematic diagram of a resin storage module in an ion exchange resin batch processing device of the present invention;

[0036] Figure 3 The figures are test results of the ball grinding rate of ion exchange resins treated manually and by the device of the present invention.

[0037] DETAILED DESCRIPTION OF THE EMBODIMENTS The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] The ion exchange resin infiltration grinding ball rate detection method of the present invention is to wash the resin with corresponding treatment agents according to different types of resins, so that the resin is subjected to water flow impact and osmotic pressure, and then ball milling is performed by a ball mill to apply friction and extrusion force to simulate the external force to which the ion exchange resin is subjected in daily use.

[0039] In order to more intuitively illustrate the ion exchange resin infiltration roundness detection method of the present invention, the sodium type strong acid cation exchange resin (model D001 MBP) is taken as an example to describe its specific implementation in detail. However, the present invention is not limited to detecting the infiltration roundness of this type of resin.

[0040] 1. Measure 16mL of ion exchange resin into the exchange column, open the piston at the bottom of the exchange column, and quickly add 32mL of hydrochloric acid solution into the exchange column with a measuring cylinder. Repeat five times to simulate the impact of water flow on the resin.

[0041] 2. Use a separatory funnel to add 320 mL of hydrochloric acid into the exchange column at a flow rate of 25 mL / min. During this period, keep the hydrochloric acid liquid level in the exchange column 1 to 2 cm higher than the resin layer to simulate the osmotic pressure that the resin is subjected to during use.

[0042] 3. Use a separatory funnel to add 320 mL of deionized water into the exchange column at a flow rate of 50 mL / min. During this time, keep the hydrochloric acid liquid level in the exchange column 1 to 2 cm higher than the resin layer to remove the remaining hydrochloric acid in the system.

[0043] 4. Use a measuring cylinder to quickly add 32 mL of sodium hydroxide solution into the exchange column. Repeat five times to simulate the impact of water flow on the resin.

[0044] 5. Use a separatory funnel to add 320 mL of sodium hydroxide into the exchange column at a flow rate of 25 mL / min. During this period, keep the sodium hydroxide liquid level in the exchange column 1 to 2 cm higher than the resin layer to simulate the osmotic pressure that the resin is subjected to during use.

[0045] 6. Use a separatory funnel to add 320 mL of deionized water into the exchange column at a flow rate of 50 mL / min. During this time, keep the sodium hydroxide level in the exchange column 1 to 2 cm higher than the resin layer to remove the remaining hydrochloric acid in the system.

[0046] 7. Transfer 15 mL of resin into a drum with 50 mL of water, add 6 porcelain balls, and ball mill at 250 rpm for 10 minutes.

[0047] 8. Transfer the ground resin to the mesh, spread it flat, and let it dry until the particles can roll naturally.

[0048] 9. Place the dried resin in the upper left corner of the enamel tray, lift the upper edge of the enamel tray so that the resin spherical particles can roll down with slight vibration while the broken particles cannot roll, and use a brush to gently stir the resin until the spherical particles and broken particles are completely separated.

[0049] 10. Weigh the spheres and crushed particles separately and calculate the sphericity of the resin.

[0050] like Figure 1 As shown, the ion exchange resin infiltration and grinding ball rate batch processing device of the present invention is composed of a processing agent storage module A, a dosing module C, a control module B and a resin storage module D, and each module is connected by a corrosion-resistant pipeline;

[0051] The treatment agent storage module A is composed of a series of corrosion-resistant containers A1 respectively containing deionized water and treatment agents. The number of containers A1 increases or decreases according to the specific type of resin. The outlet of the container A1 is connected to the inlet of the multi-channel switching valve through a corrosion-resistant pipeline.

[0052] The control module B is composed of a controller B2 and a multi-channel switching valve B1;

[0053] The dosing module C is composed of a dosing pump C1 and pipelines, which guide the solution in the treatment agent storage module to the funnel of the resin storage module through the multi-channel switching valve B1;

[0054] like Figure 2 As shown, the resin storage module D is an exchange column 3 with a porous partition 4, a funnel 1 and a solenoid valve 2 at the bottom of the funnel 1 are mounted on the top of the exchange column 3, and are connected to the exchange column 3 through a rubber stopper; a tee 5 is connected at the outlet of the exchange column 3, one end of the tee is connected to a U-shaped tube 7, and the height of the U-shaped tube is adjusted to make the liquid level of deionized water in the exchange column 1 to 2 cm higher than the upper end of the resin layer; to prevent the liquid level in the exchange column from being lower than the upper end of the resin layer, resulting in insufficient treatment; a drain solenoid valve 6 is set at the other end of the tee to empty the reagent in the exchange column; the solenoid valve 2 and the drain solenoid valve 6 are both controlled by the controller of the control module B.

[0055] In order to more intuitively illustrate the function of the ion exchange resin infiltration and grinding ball rate batch processing device of the present invention, the specific implementation method is described in detail by taking the sodium type strong acid cation exchange resin (model D001 MBP) as an example. However, the present invention is not limited to the processing of this type of resin.

[0056] 1. Add sufficient amount of corresponding treatment agent into the treatment agent storage module A;

[0057] 2. Add deionized water and 16 mL of sodium-type strongly acidic cation exchange resin to the resin storage module D, and adjust the height of the U-shaped tube 7 so that the liquid level of the deionized water in the exchange column 3 is 1 to 2 cm higher than the upper end of the resin layer;

[0058] 3. Turn on the power of the dosing module C and the control module B, and load the control instructions for the sodium-type strong acid cation exchange resin infiltration and grinding ball rate treatment;

[0059] 4. Dosing module C adds 32 mL of HCl solution into funnel 1, opens the solenoid valve 2 below the funnel 1, and quickly adds the HCl solution into the exchange column 3, and flows out through the drain solenoid valve 6 below the exchange column 3. Repeat five times to simulate water flow flushing.

[0060] 5. The dosing module C adds 320 mL of HCl solution to the resin storage module D at a flow rate of 25 mL / min, and the solution flows out of the resin storage module D through the U-tube 7. The resin is transformed by the HCl solution, thereby applying osmotic pressure.

[0061] 6. Controller B2 removes the HCl solution in the exchange column 3 through the drain solenoid valve 6. Dosing module C adds 320 mL of deionized water to the resin storage module D at a flow rate of 50 mL / min, and the water flows out of the resin storage module D through the U-shaped tube 7. The remaining HCl solution in the device is flushed with deionized water.

[0062] 7. Dosing module C adds 32 mL of NaOH solution into funnel 1, opens the solenoid valve 2 below funnel 1, quickly adds NaOH solution into exchange column 3, and flows out through the drain solenoid valve 6 below exchange column 3. Repeat five times to simulate water flow flushing.

[0063] 8. The dosing module C adds 320 mL of NaOH solution to the resin storage module D at a flow rate of 25 mL / min, and the solution flows out of the resin storage module D through the U-tube 7. The NaOH solution transforms the resin, thereby applying an osmotic pressure in the opposite direction.

[0064] 9. Controller B2 controls the drain solenoid valve 6 to drain the NaOH solution in the exchange column 3. Dosing module C adds 320 mL of deionized water to the resin storage module D at a flow rate of 50 mL / min, and the water flows out of the resin storage module D through the U-shaped tube 7, and the remaining NaOH solution in the device is flushed with deionized water.

[0065] At this point, the resin grinding roundness treatment is completed. In this process, the resin is subjected to water flow impact and osmotic pressure in different directions. After that, the resin is ball-milled, dried, the broken parts are separated and weighed according to the ball-milling method to obtain the grinding roundness. Repeat the above processing steps for the same batch of resin samples, and then test the grinding roundness of the samples after two treatments, and compare them with the samples processed manually. The results show that the treatment effect of the treatment device on the grinding roundness of ion exchange resin is no different from that of manual operation, and the repetitive consistency is good.

[0066] Furthermore, different types of ion exchange resins were treated manually and by the above-mentioned treatment device, and their infiltration and roundness rates were tested. The results are as follows: Figure 3 As shown, the test results of the wear ball rate are consistent.

[0067] The present invention can simulate the stress on the ion exchange resin during use and obtain the roundness of the resin after the stress is applied. The data has good repeatability and can objectively evaluate the mechanical strength of the ion exchange resin. Combined with the resin grinding roundness processing device provided by the present invention, the mechanical strength of the ion exchange resin can be tested in batches, efficiently and accurately.

Claims

1. A method for detecting the roundness rate of ion exchange resin infiltration grinding, characterized in that: The following steps are involved: Step 1: Measure 10~20mL of resin; Step 2: Rapidly flush the resin with a treatment agent twice the volume of the resin, repeat several times to allow the resin to be impacted by the water flow; Step 3: Flushing with a treatment agent 18 to 22 times the volume of the resin will cause a change in the ionic form of the resin. The volume of the resin particles will change with the change in form. The change in the volume of the resin particles will cause the resin particles to be subjected to osmotic pressure. Step 4: Rinse the resin with deionized water 18 to 22 times the volume of the resin to remove the treatment agent in the resin; Step 5: Rapidly flush with another treatment agent twice the volume of the resin, repeat several times to allow the resin to be impacted by water flow again; Step 6: Flushing with another treatment agent 18 to 22 times the volume of the resin causes the ionic form of the resin to change again, causing the resin particles to be subjected to an osmotic pressure again; Step 7: Rinse the resin with deionized water 18 to 22 times the volume of the resin to remove the treatment agent in the resin; Step 8: Transfer the resin to the drum with deionized water 3 times the volume of the resin, and add ceramic balls for tumbling; Step 9: Transfer the tumbled resin to gauze and dry until the particles can roll freely, and separate the intact particles from the broken particles; Step 10: Weigh the masses of intact particles and broken particles respectively, and calculate the grinding roundness rate: Grinding ball rate = ball part mass / (ball part mass + crushed part mass) × 100%; The treatment agent is a solution that can change the form of the ion exchange resin, and the solution is an acid solution or an alkaline solution, and the concentration is 1 mol / L; when the treatment agent used in step 2 and step 3 is an acid solution, the other treatment agent used in step 5 and step 6 is an alkaline solution, and vice versa; The flow rate of the treatment agent was 32 mL / min.

2. The method for detecting the roundness rate of ion exchange resin infiltration grinding according to claim 1, characterized in that: The roller is made of brass, with a height of 125 mm, a diameter of 95 mm, a wall thickness of 5 mm, and a 2 mm thick rubber pad on the inner side of the cylinder cover.

3. The method for detecting the roundness rate of ion exchange resin infiltration grinding according to claim 1, characterized in that: The number of porcelain balls added is 6 to 10, the diameter of the porcelain balls is 20 mm, the mass is 10 g, and the rolling time is 10 to 20 minutes.

4. The method for detecting the roundness rate of ion exchange resin infiltration grinding according to claim 1, characterized in that: Transfer the dried resin to the upper left corner of the enamel tray, lift the upper edge of the enamel tray so that the resin spheres can roll down with slight vibrations while the broken particles cannot roll, and use a brush to gently stir the resin until the spheres and broken particles are completely separated.

5. A batch processing device for realizing the method for detecting the roundness rate of ion exchange resin infiltration grinding as claimed in claim 1, characterized in that: It consists of a treatment agent storage module (A), a dosing module (C), a control module (B) and a resin storage module (D), and each module is connected by corrosion-resistant pipes; The treatment agent storage module (A) is composed of a series of corrosion-resistant containers (A1) respectively containing deionized water and treatment agents. The number of containers (A1) increases or decreases according to the specific type of resin. The outlet of the container (A1) is connected to the inlet of the multi-channel switching valve through a corrosion-resistant pipeline. The control module (B) is composed of a controller (B2) and a multi-channel switching valve (B1); The dosing module (C) is composed of a dosing pump (C1) and a pipeline, and guides the solution in the treatment agent storage module to the funnel of the resin storage module through a multi-channel switching valve (B1); The resin storage module (D) is an exchange column (3) with a perforated partition (4). A funnel (1) and a solenoid valve (2) at the bottom of the funnel (1) are mounted on the top of the exchange column (3) and connected to the exchange column (3) via a rubber stopper. A tee (5) is connected at the outlet of the exchange column (3). One end of the tee is connected to a U-shaped tube (7). The height of the U-shaped tube is adjusted so that the liquid level of deionized water or treatment agent in the exchange column is 1 to 2 cm higher than the upper end of the resin layer. This prevents the liquid level in the exchange column from being lower than the upper end of the resin layer, resulting in insufficient treatment. A liquid discharge solenoid valve (6) is arranged at the other end of the tee for draining the agent in the exchange column. Both the solenoid valve (2) and the liquid discharge solenoid valve (6) are controlled by a controller of the control module (B).

6. The batch processing device according to claim 5, characterized in that: The device is expanded in parallel, and different types of ion exchange resins can be processed in batches at the same time through control modules.

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