Ion exchange system

Abstract

The utility model discloses an ion exchange system and relates to the technical field of ion exchange. Comprising an ion exchange column I and an ion exchange column II, a liquid outlet of the ion exchange column I is connected with a liquid storage tank I through a pipeline I, and a liquid outlet of the ion exchange column II is connected with a liquid storage tank II through a pipeline II; the first liquid storage tank is provided with two liquid outlets, and one liquid outlet is connected with a liquid inlet of the first ion exchange column through a first return pipe. A liquid backflow pipeline is designed and is matched with a flow meter I, a flow meter II, a regulating valve I and a regulating valve II to quantitatively regulate the backflow quantity of liquid, so that ions which are not completely exchanged in the solution return to the ion exchange column I and the ion exchange column II to be exchanged with the ion exchange resin again, and the utilization rate of the ion exchange resin can be increased; meanwhile, in the elution process, the material concentration of eluted liquid can be improved through reflux elution, and the energy consumption required by subsequent concentration and crystallization is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ion exchange, in particular to an ion exchange system. Background Art

[0002] Ion exchange requires the use of ion exchange columns. Ion exchange columns refer to columnar pressure vessels used for ion exchange reactions. They are exchange equipment for column-based ion exchange and are often used in laboratories and industries. According to the regeneration method, they can be divided into three types: in vivo regeneration mixed bed, in vitro regeneration mixed bed, and anion resin external regeneration mixed bed. In terms of scope of use, they can be divided into laboratory ion exchange columns and industrial ion exchange columns.

[0003] The existing continuous ion exchange system uses multiple ion exchange columns connected in series. The material enters the ion exchange column from the inlet of the first ion exchange column and flows out from the outlet of the last ion exchange column along the pipeline. During the exchange process, the resin in the ion exchange column is not fully saturated, and a certain amount of resin is in an unsaturated state. At the same time, the ions to be treated in the material are not completely adsorbed by the resin. Summary of the invention

[0004] The utility model provides an ion exchange system to solve the problems in the background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: an ion exchange system, comprising an ion exchange column 1 and an ion exchange column 2, wherein the liquid outlet of the ion exchange column 1 is connected to a liquid storage tank 1 through a pipe 1, and the liquid outlet of the ion exchange column 2 is connected to a liquid storage tank 2 through a pipe 2;

[0006] The liquid storage tank 1 has two liquid outlets, one of which is connected to the liquid inlet of the ion exchange column 1 through the reflux pipe 1, and the other is connected to the liquid inlet of the ion exchange column 2 through the reflux pipe 2;

[0007] The liquid storage tank 2 has two liquid outlets, one of which is connected to the liquid inlet of the ion exchange column 2 through the reflux pipe 2, and the other is connected to the solution outlet through the pipe 5;

[0008] The liquid inlet of the ion exchange column 1 is connected to the solution inlet, and the gas inlets of the ion exchange column 1 and the ion exchange column 2 are both connected to the gas source inlet.

[0009] Furthermore, the pipeline one is provided with a valve one, and the pipeline two is provided with a valve two.

[0010] Furthermore, a flow meter and a regulating valve are provided on the two liquid outlets of the liquid storage tank.

[0011] Furthermore, two liquid outlets of the second liquid storage tank are both provided with a flow meter 2 and a regulating valve 2.

[0012] Furthermore, the liquid inlet of the ion exchange column 1 and the liquid inlet of the ion exchange column 2 are respectively provided with a liquid inlet valve 1 and a liquid inlet valve 2.

[0013] Furthermore, the gas inlets of the first ion exchange column and the second ion exchange column are both provided with gas source valves.

[0014] Compared with the prior art, the utility model provides an ion exchange system with the following beneficial effects:

[0015] 1. The ion exchange system has a liquid reflux pipeline design, which can quantitatively adjust the liquid reflux volume in conjunction with flow meter 1, flow meter 2, regulating valve 1 and regulating valve 2, so that the ions that have not been fully exchanged in the solution return to the inside of ion exchange column 1 and ion exchange column 2 to be exchanged with the ion exchange resin again, thereby improving the utilization rate of the ion exchange resin. At the same time, during the elution process, reflux elution can also increase the material concentration of the eluted liquid and reduce the energy consumption required for subsequent concentration and crystallization.

[0016] 2. The ion exchange system introduces exhaust gas into the interior of the ion exchange column 1 and the ion exchange column 2 through the gas source inlet, and uses the gas to purge the adsorption saturated ion exchange resin to purge the residual solution between the resins, thereby achieving the purpose of reducing the water content of the resins in the ion exchange column 1 and the ion exchange column 2, reducing the amount of elution material, increasing the concentration of the eluted liquid, and improving the utilization rate of the ion exchange resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a system flow chart of the utility model.

[0018] In the figure: 1. ion exchange column 1; 2. ion exchange column 2; 3. liquid storage tank 1; 4. liquid storage tank 2; 5. pipeline 1; 6. pipeline 2; 7. reflux pipe 1; 8. reflux pipe 2; 9. pipeline 5; 10. valve 1; 11. valve 2; 12. flow meter 1; 13. regulating valve 1; 14. flow meter 2; 15. regulating valve 2; 16. liquid inlet valve 1; 17. liquid inlet valve 2; 18. gas source valve; 19. solution inlet; 20. solution outlet; 21. gas source inlet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 The utility model discloses an ion exchange system, including an ion exchange column 1 and an ion exchange column 2, wherein the liquid outlet of the ion exchange column 1 is connected to a liquid storage tank 3 through a pipeline 5, and the liquid outlet of the ion exchange column 2 is connected to a liquid storage tank 4 through a pipeline 6.

[0021] The liquid storage tank 1 has two liquid outlets, one of which is connected to the liquid inlet of the ion exchange column 1 through a reflux pipe 1 7 , and the other is connected to the liquid inlet of the ion exchange column 2 2 through a reflux pipe 2 8 .

[0022] The liquid storage tank 2 4 has two liquid outlets, one of which is connected to the liquid inlet of the ion exchange column 2 2 through a reflux pipe 2 8 , and the other is connected to the solution outlet 20 through a pipeline 5 9 .

[0023] The liquid inlet of the ion exchange column 1 is connected to the solution inlet 19 , and the gas inlets of the ion exchange column 1 and the ion exchange column 2 are both connected to the gas source inlet 21 .

[0024] The ion exchange system comprises at least two ion exchange columns, the liquid outlet of the liquid storage tank of the previous ion exchange column is connected with the liquid inlet of the next ion exchange column, and the two ion exchange columns are connected in series.

[0025] Specifically, the pipeline 1 5 is provided with a valve 10 , and the pipeline 2 6 is provided with a valve 2 11 . The valve 10 is used to control the opening and closing of the pipeline 1 5 , and the valve 2 11 is used to control the opening and closing of the pipeline 2 6 .

[0026] Specifically, the two liquid outlets of the liquid storage tank 3 are both provided with a flow meter 12 and a regulating valve 13, the two liquid outlets of the liquid storage tank 24 are both provided with a flow meter 214 and a regulating valve 215, the liquid inlet of the ion exchange column 1 and the liquid inlet of the ion exchange column 2 are respectively provided with a liquid inlet valve 16 and a liquid inlet valve 217, and the gas inlets of the ion exchange column 1 and the ion exchange column 2 are both provided with a gas source valve 18. When the liquid inlet valve 16 is opened, the solution enters the ion exchange column 1. After the exchange is completed, it flows into the interior of the liquid storage tank 3 through the pipeline 5. The liquid in the liquid storage tank 3 is discharged from the two liquid The outlet is separated, and the solution is adjusted by a flow meter 12 and a regulating valve 13. According to the flow rate set in the process, the solution flows back to the ion exchange column 1 through a reflux pipe 7 and a reflux pipe 8, and flows into the interior of the ion exchange column 22. The solution can enter the interior of the ion exchange column 22 by opening a liquid inlet valve 17. After the solution is exchanged inside the ion exchange column 22, it flows into the interior of the liquid storage tank 24 through a pipe 26. The liquid inside the liquid storage tank 24 is separated from the two liquid outlets, and is adjusted by a flow meter 14 and a regulating valve 15. According to the flow rate set in the process, the solution flows back to the interior of the ion exchange column 22 through a reflux pipe 8, and flows out of the system through a solution outlet 20.

[0027] After the above steps, the liquid realizes continuous ion exchange reaction with the ion exchange resin in the ion exchange column 1 and the ion exchange column 2. The liquid reflux pipeline design, in conjunction with the flow meter 12, the flow meter 2, the regulating valve 13 and the regulating valve 2 15, can quantitatively adjust the liquid reflux amount, so that the ions that have not been completely exchanged in the solution return to the inside of the ion exchange column 1 and the ion exchange column 2 to be exchanged with the ion exchange resin again, which can improve the utilization rate of the ion exchange resin. At the same time, during the elution process, the reflux elution can also increase the material concentration of the eluted liquid and reduce the energy consumption required for subsequent concentration and crystallization.

[0028] After the exchange reaction is completed, the liquid inlet valve 16 and the liquid inlet valve 2 17 connected to the ion exchange column 1 and the ion exchange column 2 are closed, the gas source valve 18 is opened, and the exhaust gas enters the interior of the ion exchange column 1 and the ion exchange column 2, and the remaining liquid in the ion exchange column 1 and the ion exchange column 2 is purged to the liquid storage tank 1 3 and the liquid storage tank 2 4, so as to reduce the water content of the resin in the ion exchange column 1 and the ion exchange column 2, reduce the amount of elution material, increase the concentration of the eluted liquid, and improve the utilization rate of the ion exchange resin.

[0029] In summary, the ion exchange system, the liquid reflux pipeline design, in conjunction with the flow meter 12, the flow meter 2 14, the regulating valve 13 and the regulating valve 2 15 can quantitatively adjust the liquid reflux amount, so that the ions that have not been exchanged in the solution return to the interior of the ion exchange column 1 and the ion exchange column 2 to be exchanged with the ion exchange resin again, which can improve the utilization rate of the ion exchange resin. At the same time, during the elution process, the reflux elution can also increase the material concentration of the eluted liquid and reduce the energy consumption required for subsequent concentration and crystallization.

[0030] The ion exchange system introduces exhaust gas into the interior of ion exchange column 1 and ion exchange column 2 through gas source inlet 21, uses gas to purge the adsorption saturated ion exchange resin, and purges the residual solution between the resins, so as to achieve the purpose of reducing the water content of the resin in ion exchange column 1 and ion exchange column 2, reducing the amount of elution material, increasing the concentration of the eluted liquid, and improving the utilization rate of the ion exchange resin.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ion exchange system, comprising an ion exchange column 1 (1) and an ion exchange column 2 (2), characterized in that: The liquid outlet of the ion exchange column 1 (1) is connected to the liquid storage tank 1 (3) via the pipeline 1 (5), and the liquid outlet of the ion exchange column 2 (2) is connected to the liquid storage tank 2 (4) via the pipeline 2 (6); The liquid storage tank 1 (3) has two liquid outlets, one of which is connected to the liquid inlet of the ion exchange column 1 (1) through the reflux pipe 1 (7), and the other is connected to the liquid inlet of the ion exchange column 2 (2) through the reflux pipe 2 (8); The second liquid storage tank (4) has two liquid outlets, one of which is connected to the liquid inlet of the second ion exchange column (2) through the second reflux pipe (8), and the other is connected to the solution outlet (20) through the fifth pipeline (9); The liquid inlet of the ion exchange column one (1) is connected to a solution inlet (19), and the gas inlets of the ion exchange column one (1) and the ion exchange column two (2) are both connected to a gas source inlet (21).

2. An ion exchange system according to claim 1, characterized in that: The pipeline one (5) is provided with a valve one (10), and the pipeline two (6) is provided with a valve two (11).

3. An ion exchange system according to claim 1, characterized in that: The two liquid outlets of the liquid storage tank 1 (3) are both provided with a flow meter 1 (12) and a regulating valve 1 (13).

4. An ion exchange system according to claim 1, characterized in that: The two liquid outlets of the second liquid storage tank (4) are both provided with a flow meter (14) and a regulating valve (15).

5. An ion exchange system according to claim 1, characterized in that: The liquid inlet of the ion exchange column 1 (1) and the liquid inlet of the ion exchange column 2 (2) are respectively provided with a liquid inlet valve 1 (16) and a liquid inlet valve 2 (17).

6. An ion exchange system according to claim 1, characterized in that: The gas inlets of the ion exchange column 1 (1) and the ion exchange column 2 (2) are both provided with gas source valves (18).

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