Device and method for testing separation degree of ion exchange resin for water treatment

Abstract

The invention relates to the technical field of water treatment resin regeneration, in particular to a water treatment ion exchange resin separation degree testing device and method.The water treatment ion exchange resin separation degree testing device comprises a separation column, a sand core overflow opening is formed in the separation column, and a piston valve is arranged at the bottom end of the separation column; a sand core drain valve is arranged at the bottom end of the resin measurer, a sand core emptying valve is arranged on the resin measurer, and a grease discharging valve is arranged on the outer wall of the end, close to the sand core drain valve, of the resin measurer; the bottom end of the separation column is connected with the top end of the resin measurer through a piston valve, the experimental operation for testing the resin separation degree by using the device is rapid and simple, meanwhile, the resin volume can be accurately measured under the condition that the sample amount is small, the testing precision of the resin separation degree is guaranteed, and the testing efficiency is improved. And a basis is provided for accurately judging the operation condition of the condensate polishing regeneration system.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment resin regeneration, in particular to a water treatment ion exchange resin separation degree testing device and a testing method. Background Art

[0002] The high-speed mixed bed is the main equipment of the condensate polishing system. When the mixed resin filled inside fails, the mixed resin enters the regeneration system for separation and regeneration. If the cation and anion resins cannot be completely separated, the cation resin is mixed with the anion resin, and the anion resin is mixed with the cation resin, cross contamination will occur during the regeneration process, resulting in poor water quality of the high-speed mixed bed effluent. Therefore, it is particularly important to monitor the resin separation effect in a timely manner.

[0003] The separation effect of the resin is expressed by the separation index. DL / T 333.1-2010 "Technical Requirements for Condensate Polishing System in Thermal Power Plants Part 1: Wet Cooling Units" stipulates that after the separation of the cation resin and the anion resin, the content of the cation resin in the anion resin (cation in anion) is less than 0.1%, and the content of the anion resin in the cation resin (anion in anion) is less than 0.1%. At present, the resin separation degree only has the above index requirements, and there is no standard method for separation degree testing.

[0004] The separation test method commonly used in laboratories is to add saturated salt water or 17% sodium hydroxide solution to a 100mL measuring cylinder, then add the resin sample to the measuring cylinder. After the cation resin and the anion resin are completely separated, the volumes of the cation resin and the anion resin are calculated by reading the scales on the measuring cylinder, and the separation of the cation resin (cation in anion) or the separation of the anion resin (anion in anion) is calculated. Since the amount of resin used in the experimental test is small, usually not exceeding 100mL, and the accuracy of the measuring cylinder is 1mL, the accuracy of the test results cannot meet the standard requirements, and the resulting separation test results have large errors.

[0005] The present invention aims to develop a testing device for the separation degree of ion exchange resins, which solves the problem that there is no professional testing device for the current resin separation degree test; secondly, in combination with the resin separation degree index requirements, a testing method for the resin separation degree is proposed. Summary of the invention

[0006] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0007] Therefore, the object of the present invention is to provide a water treatment ion exchange resin separation degree testing device.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a water treatment ion exchange resin separation degree testing device, comprising:

[0009] A separation column, wherein a sand core overflow port is provided on the separation column, and a piston valve is provided at the bottom end of the separation column;

[0010] A resin measuring device, wherein a sand core drain valve is provided at the bottom of the resin measuring device, a sand core emptying valve is provided on the resin measuring device, and a grease unloading valve is provided on the outer wall of one end of the resin measuring device close to the sand core drain valve;

[0011] The bottom end of the separation column is connected to the top end of the resin measuring device through a piston valve.

[0012] As a preferred solution of the water treatment ion exchange resin separation degree testing device of the present invention, wherein: a feed port is provided at the top of the separation column.

[0013] As a preferred solution of the water treatment ion exchange resin separation degree testing device of the present invention, it further comprises a resin recovery tank placed below the resin measuring device.

[0014] As a preferred solution of the water treatment ion exchange resin separation degree testing device of the present invention, wherein: the surface of the resin measuring device is provided with a scale.

[0015] As a preferred solution of the water treatment ion exchange resin separation degree testing device of the present invention, wherein: the feed port is funnel-shaped, and the lower part thereof penetrates into the interior of the separation column.

[0016] As a preferred solution of the water treatment ion exchange resin separation degree testing device of the present invention, wherein: the separation column is made of glass, the height of the separation column is 300 mm, and the inner diameter is 40 mm.

[0017] As a preferred solution of the water treatment ion exchange resin separation degree testing device of the present invention, wherein: the piston valve, the sand core drain valve, and the grease unloading valve are all made of polytetrafluoroethylene.

[0018] The beneficial effects of the water treatment ion exchange resin separation degree testing device of the present invention are as follows: the experimental operation of using the device to test the resin separation degree is fast and simple, and at the same time, when the sample amount is small, the resin volume can also be accurately measured to ensure the test accuracy of the resin separation degree, providing a basis for accurately judging the operation status of the condensate water polishing regeneration system.

[0019] In order to solve the above technical problems, the present invention also provides the following technical solutions: a method for testing the separation degree of ion exchange resin for water treatment, applied to the above-mentioned device for testing the separation degree of ion exchange resin for water treatment, comprising:

[0020] The sample to be tested was taken by the quartering method;

[0021] subjecting the resin sample to resin separation;

[0022] Measure the volume of resin in the negative part of the positive part;

[0023] Measure the resin volume of the yin-yang;

[0024] Calculate the resin resolution.

[0025] As a preferred embodiment of the water treatment ion exchange resin separation test method of the present invention, the specific steps of measuring the volume of the negative resin in the positive include:

[0026] Open the piston valve at the bottom of the separation column and the sand core drain valve at the top of the resin measuring device. When all the positive resin enters the resin measuring device, immediately close the piston valve, then open the unloading valve at the bottom of the resin measuring device to discharge all the positive resin into the resin recovery tank, and close the unloading valve;

[0027] Open the piston valve at the bottom of the separation column, wait for all the anion resin to enter the resin measuring device, open the sand core drain valve of the resin measuring device, wait for all the saturated salt water to be discharged, and read the volume V of the anion resin. 阴 ; Open the unloading valve at the bottom of the resin measuring instrument to discharge all the negative resin into the resin recovery tank.

[0028] As a preferred embodiment of the water treatment ion exchange resin separation test method of the present invention, the specific steps of measuring the volume of the yin-yang resin include:

[0029] First, open the piston valve at the bottom of the separation column and the sand core drain valve at the top of the resin measuring device. When all the cationic resin enters the resin measuring device, immediately close the piston valve and open the sand core drain valve of the resin measuring device. After all the saturated salt water is discharged, read the volume V of the cationic resin. 阳 ; Then open the piston valve at the bottom of the separation column and the unloading valve at the bottom of the resin measuring device at the same time to discharge all the positive and negative resins into the resin recovery pool.

[0030] The beneficial effects of the water treatment ion exchange resin separation degree testing method of the present invention are as follows: the experimental operation of using the method to test the resin separation degree is fast and simple, and at the same time, when the sample amount is small, the resin volume can also be accurately measured to ensure the test accuracy of the resin separation degree, providing a basis for accurately judging the operation status of the condensate water polishing regeneration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0032] Figure 1 It is the overall schematic diagram of the water treatment ion exchange resin separation test device.

[0033] In the figure: 100, separation column; 101, sand core overflow port; 102, piston valve; 103, feeding port; 200, resin measuring device; 201, sand core drain valve; 202, sand core emptying valve; 203, grease unloading valve; 300, resin recovery tank. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Example 1, reference Figure 1 , which is the first embodiment of the present invention, and provides a water treatment ion exchange resin separation degree test device, comprising a separation column 100, a sand core overflow port 101 is provided on the separation column 100, and a piston valve 102 is provided at the bottom end of the separation column 100;

[0038] A resin measuring device 200, a sand core drain valve 201 is provided at the bottom of the resin measuring device 200, a sand core emptying valve 202 is provided on the resin measuring device 200, and a grease unloading valve 203 is provided on the outer wall of one end of the resin measuring device 200 close to the sand core drain valve 201;

[0039] The bottom end of the separation column 100 is connected to the top end of the resin measuring device 200 through a piston valve 102. In the present embodiment, the sand core drain valve 202 mainly serves to balance the air pressure and prevent the resin from leaking. The function of the sand core drain valve 202 is to remove the water when the resin enters the measuring device. The main reason is that the expansion rates of the positive resin and the negative resin in water are different. After the water is discharged, the volume error caused by the expansion of the resin in water can be avoided. During the measurement process, the resin measuring device 200 is kept vertical to ensure that the resin surface is flat during the reading process.

[0040] Specifically, a feed port 103 is provided at the top of the separation column 100 .

[0041] Furthermore, a resin recovery tank 300 is included below the resin measuring device 200. The resin measuring device 200 is provided to facilitate collection of discharged resin.

[0042] The surface of the resin measuring device 200 is provided with scales, and the setting of the scales facilitates the reading of the volume.

[0043] Preferably, the feed port 103 is funnel-shaped, with the lower portion extending into the interior of the separation column 100. In the present embodiment, the feed port 103 is funnel-shaped, with the lower portion extending into the interior of the separation column 100 so as to facilitate the resin to directly enter the separation liquid through the lower end of the feed port 103 during the feeding process, thereby avoiding the resin being adsorbed on the upper inner wall of the separation column 100 during the feeding process.

[0044] It should be noted that the separation column 100 is made of glass, and the height of the separation column 100 is 300 mm and the inner diameter is 40 mm. In this embodiment, during the resin separation process, the separation column 100 must remain vertical and is made of glass to facilitate observation of resin stratification. Preferably, the material of the resin separation column 100 is high borosilicate glass.

[0045] Preferably, the piston valve 102, the sand core drain valve 201, and the grease unloading valve 203 are all made of polytetrafluoroethylene. In the present embodiment, all valves are constructed of a piston structure. The polytetrafluoroethylene material has better sealing performance, flexible rotation operation, and acid and alkali resistance.

[0046] In summary, the present invention proposes a water treatment ion exchange resin separation degree testing device. The experimental operation of testing the resin separation degree using the device is fast and simple. At the same time, when the sample amount is small, the resin volume can also be accurately measured to ensure the test accuracy of the resin separation degree, thereby providing a basis for accurately judging the operation status of the condensate water polishing regeneration system.

[0047] Example 2, reference Figure 1 , which is the second embodiment of the present invention, is different from the previous embodiment in that this embodiment provides a water treatment ion exchange resin separation degree testing method, which is applied to a water treatment ion exchange resin separation degree testing device, including,

[0048] The sample to be tested was taken by the quartering method;

[0049] Specifically, 100 mL of the sample to be tested is taken by the quartering method, and is soaked in pure water for 10 minutes to remove impurities on the surface of the resin, and the resin is set aside; saturated salt water is added to the separation column 100, and the liquid level of the saturated salt water is about 150 mm.

[0050] subjecting the resin sample to resin separation;

[0051] Specifically, the resin sample is added into the separation column 100 through the feed port 103, and the granular resin adsorbed on the glass wall is completely washed into the separation column 100 with saturated saline. The positive resin will sink to the lower part of the separation column 100, and the negative resin will float in the upper part of the separation column 100.

[0052] Measure the volume of resin in the negative part of the positive part;

[0053] Specifically, the specific steps of measuring the volume of the resin of the positive in the negative include:

[0054] Open the piston valve 102 at the bottom of the separation column 100, wait until all the positive resin enters the resin measuring device 200, immediately close the piston valve 102, then open the unloading valve 203 at the bottom of the resin measuring device 200, discharge all the positive resin into the resin recovery tank 300, and close the unloading valve 203;

[0055] Open the piston valve 102 at the bottom of the separation column 100, wait for all the anion resin to enter the resin measuring device 200, open the sand core drain valve 201 of the resin measuring device 200, and read the volume V anion of the anion resin after all the saturated salt water is discharged.

[0056] Measure the resin volume of the yin-yang;

[0057] Further, the specific steps of measuring the resin volume of the yin-yang include:

[0058] First, open the piston valve 102 at the bottom of the separation column 100, wait until all the cationic resin enters the resin measuring device 200, immediately close the piston valve 102, open the sand core drain valve 201 of the resin measuring device 200, wait until all the saturated salt water is discharged, and read the volume V of the cationic resin;

[0059] Then, the piston valve 102 at the bottom of the separation column 100 and the unloading valve 203 at the bottom of the resin measuring device 200 are opened simultaneously to discharge all the positive and negative resins into the resin recovery tank 300 .

[0060] Calculate the resin separation degree;

[0061] Specifically, the separation degree is calculated using the following algorithm:

[0062] Yin in Yang = V 阴 / 100*100%

[0063] Yang in Yin = V 阳 / 100*100%

[0064] V is the volume of the cation resin after separation, in mL

[0065] V is the volume of the anion resin after separation, in mL

[0066] The rest of the structure is the same as that of Example 1.

[0067] In summary, the present invention proposes a water treatment ion exchange resin separation degree test device and test method. The experimental operation of using the device and method to test the resin separation degree is fast and simple. At the same time, when the sample amount is small, the resin volume can also be accurately measured to ensure the test accuracy of the resin separation degree, providing a basis for accurately judging the operation of the condensate polishing regeneration system;

[0068] The introduction of this device and method will significantly improve the accuracy of separation test results and accurately evaluate the resin separation of the on-site regeneration system; and will fill the gap in the current devices and methods in laboratory resin separation tests.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A water treatment ion exchange resin separation test device, characterized in that: include, A separation column (100), wherein a sand core overflow port (101) is provided on the separation column (100), and a piston valve (102) is provided at the bottom end of the separation column (100); A resin measuring device (200), wherein a sand core drain valve (201) is provided at the bottom of the resin measuring device (200), a sand core emptying valve (202) is provided on the resin measuring device (200), and a grease unloading valve (203) is provided on the outer wall of one end of the resin measuring device (200) close to the sand core drain valve (201); The bottom end of the separation column (100) is connected to the top end of the resin measuring device (200) via a piston valve (102).

2. The water treatment ion exchange resin separation degree testing device according to claim 1, characterized in that: The top of the separation column (100) is provided with a feed port (103).

3. The water treatment ion exchange resin separation degree testing device as claimed in claim 2, characterized in that: It also includes a resin recovery tank (300) disposed below the resin measurer (200).

4. The water treatment ion exchange resin separation degree testing device as claimed in claim 3, characterized in that: The surface of the resin measuring device (200) is provided with scales.

5. The water treatment ion exchange resin separation degree testing device as claimed in claim 4, characterized in that: The feed port (103) is funnel-shaped, and the lower part thereof penetrates into the interior of the separation column (100).

6. The water treatment ion exchange resin separation degree testing device according to claim 5, characterized in that: The separation column (100) is made of glass, and has a height of 300 mm and an inner diameter of 40 mm.

7. The water treatment ion exchange resin separation degree testing device according to claim 6, characterized in that: The piston valve (102), the sand core drain valve (201) and the grease removal valve (203) are all made of polytetrafluoroethylene.

8. A method for testing the separation degree of ion exchange resin for water treatment, applied to the device for testing the separation degree of ion exchange resin for water treatment according to any one of claims 3 to 7, characterized in that: include, The sample to be tested was taken by the quartering method; subjecting the resin sample to resin separation; Measure the volume of resin in the yin of the yang; Measure the volume of resin in the yin-yang; Calculate the resin resolution.

9. The water treatment ion exchange resin separation degree testing method according to claim 8, characterized in that: The specific steps for measuring the resin volume of the positive in the negative include: Open the piston valve (102) at the bottom of the separation column (100) and the sand core emptying valve (202) at the top of the resin measuring device (200), wait until all the positive resin enters the resin measuring device (200), close the piston valve (102), open the unloading valve (203) at the bottom of the resin measuring device (200), discharge all the positive resin into the resin recovery tank (300), and close the unloading valve (203); Open the piston valve (102) at the bottom of the separation column (100), wait for the anion resin to enter the resin measuring device (200), open the sand core drain valve (201) of the resin measuring device (200), wait for the saturated salt water to be completely discharged, and read the volume V of the anion resin. 阴 ; Open the unloading valve (203) at the bottom of the resin measuring device (200) to discharge all the negative resin into the resin recovery tank (300).

10. The water treatment ion exchange resin separation degree testing method according to claim 9, characterized in that: The specific steps for measuring the resin volume of the Yin-in-Yang include: Open the piston valve (102) at the bottom of the separation column (100) and the sand core drain valve (202) at the top of the resin measuring device (200), wait for all the cationic resin to enter the resin measuring device (200), close the piston valve (102), open the sand core drain valve (201) of the resin measuring device (200), wait for all the saturated salt water to be discharged, and read the volume V of the cationic resin. 阳 ; At the same time, the piston valve (102) at the bottom of the separation column (100) and the unloading valve (203) at the bottom of the resin measuring device (200) are opened to discharge all the cation and anion resins into the resin recovery tank (300).

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