Regeneration device of ion exchange column
By using technical means such as siphon port, distributor, stirring mechanism and spraying mechanism in the regeneration device of the detachment column, the problem of excessive use of acid and alkali regeneration in the prior art has been solved, and efficient resin regeneration is achieved. Improves acid and alkali utilization and resin regeneration effect.
Patent Information
- Application Number
- CN202420913270.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-28
AI Technical Summary
During the regeneration process, the existing detachment columns are saturated with anion and cations of the resin, which leads to excessive use of acid and alkali regeneration liquid, low utilization rate, and insufficient equipment space, resulting in increased acid and alkali consumption, which affects the resin regeneration effect.
A device including a male resin regeneration tank and a female resin regeneration tank is designed. By setting up a siphon port, a distributor, a stirring mechanism and a spraying mechanism, the acid and alkali liquid are uniformly distributed and contacted with the resin efficiently, and the barrier network is combined to prevent it. Resin floats to improve regeneration efficiency.
It effectively improves the acid-base utilization rate, reduces the acid-base usage, improves the regeneration effect and completion rate of the off-cross resin, ensures the direct contact between high concentrations of acid-base and resin, and enhances the ion exchange capacity.
Smart Images
Figure CN222240313U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ion exchange columns, in particular to a regeneration device for ion exchange columns. Background Art
[0002] The ion exchange column is a floating bed with a volume of 35m 3 , specifications (φ=2800mm, straight section height H=5040mm, total height H=7240mm, V=35m 3 ), resin loading is 15m 3 This equipment belongs to ion exchange equipment. It is used in the ion exchange section. During normal use, the positive column (filled with cation resin) and the negative column (filled with anion resin) are used in series, with material fed from the top of the positive column, the bottom of the positive column and the bottom of the negative column connected by a pipe, and material discharged from the top of the negative column. As the use time of the ion exchange column increases, the anions and cations in the resin will be saturated and will lose the ability to continue to adsorb ions. Therefore, when the material throughput reaches a certain amount or the discharge index reaches a certain level, it needs to be replaced, and the replaced ion exchange column is regenerated.
[0003] When using a floating bed to regenerate the ion exchange resin, more acid and alkali regeneration liquid is used. Because the equipment itself is not filled with resin, there is space for resin backwashing. Also, due to the space problem, the usage of acid and alkali is reduced, which indirectly increases the consumption of acid and alkali. Utility Model Content
[0004] The utility model aims to provide a regeneration device for an ion exchange column, which can improve the utilization rate of acid and alkali, reduce the amount of acid and alkali used, and enhance the regeneration effect of the ion exchange resin.
[0005] The embodiments of the present invention are implemented by the following technical solutions:
[0006] A regeneration device for an ion exchange column comprises a cation resin regeneration tank and an anion resin regeneration tank, wherein the lower part of the cation resin regeneration tank is connected with an acid liquid inlet pipe, the upper part of the anion resin regeneration tank is connected with an alkali liquid inlet pipe, the height of the alkali liquid inlet pipe is the same as the height of the resin, distributors are arranged at the liquid outlet ends of the acid liquid inlet pipe and the alkali liquid inlet pipe, a waste acid liquid discharge port is arranged at the upper part of the cation resin regeneration tank, the height of the waste acid liquid discharge port is the same as the height of the resin, a waste alkali liquid discharge port is arranged at the lower part of the anion resin regeneration tank, the waste acid liquid discharge port is connected with a first liquid discharge pipe, the waste alkali liquid discharge port is connected with a second liquid discharge pipe, siphon breaking ports are arranged at the positions where the first liquid discharge pipe and the second liquid discharge pipe are flush with the resin, and barrier nets are arranged in the cation resin regeneration tank and the anion resin regeneration tank.
[0007] Furthermore, a stirring mechanism is provided on both the cation resin regeneration tank and the anion resin regeneration tank. The stirring mechanism is an air compression pump. The air compression pump is connected to the cation resin regeneration tank and the anion resin regeneration tank through an air pipeline.
[0008] Furthermore, both the cation resin regeneration tank and the anion resin regeneration tank are connected to a spray mechanism, which includes a desalted water tank, a water supply pipe, a water spray pipe and a nozzle. Water supply pipes are arranged on both sides of the desalted water tank, the water spray pipes are arranged on the inner top surfaces of the cation resin regeneration tank and the anion resin regeneration tank, the water supply pipes are connected to the water spray pipes, and the nozzles are installed on the water spray pipes.
[0009] Furthermore, one end of the first liquid discharge pipe away from the waste acid liquid discharge outlet is connected to a waste acid liquid recovery tank, and one end of the second liquid discharge pipe away from the waste alkali liquid discharge outlet is connected to a waste alkali liquid recovery tank.
[0010] Furthermore, the bottom of the cation resin regeneration tank is connected to a cation resin discharge pipe and a first deionized water discharge pipe, and the bottom of the anion resin regeneration tank is connected to an anion resin discharge pipe and a second deionized water discharge pipe.
[0011] Furthermore, a material blocking net is provided in both the first demineralized water discharge pipe and the second demineralized water discharge pipe.
[0012] Furthermore, the lower parts of the cation resin regeneration tank and the anion resin regeneration tank are also connected with flushing pipes.
[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:
[0014] The utility model needs to rinse the cation resin and the anion resin with water to remove large particles of impurities in the resin before the cation resin and the anion resin are regenerated. By setting a siphon break, the water in the cation resin regeneration tank and the anion resin regeneration tank can be completely discharged, that is, the water is discharged to the resin surface. In this way, when adding acid or alkali, it can be avoided that the water is not discharged to dilute the acid and alkali, and the concentration of the acid or alkali is prevented from decreasing, thereby ensuring that the high concentration of acid and alkali can be used to directly contact the resin, enhance the ion exchange of the acid and alkali and the resin, and effectively improve the acid and alkali utilization rate, reduce the amount of acid and alkali used, and improve the regeneration effect of the ion exchange resin. The distributor can evenly distribute the acid on the cross section of the cation resin regeneration tank and evenly distribute the alkali on the cross section of the anion resin regeneration tank, thereby improving the treatment effect of the acid and alkali on the resin. The barrier net can prevent the resin from floating on the surface of the acid or alkali, thereby improving the regeneration efficiency and regeneration completion rate of the resin. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1A schematic diagram of the structure of the regeneration device of the ion exchange column provided in Example 1 of the utility model;
[0017] Figure 2 This is a cross-sectional view of the cation resin regeneration tank provided in Example 1 of the utility model.
[0018] Icons: 1-cationic resin regeneration tank, 2-anion resin regeneration tank, 3-acid inlet pipe, 4-alkali inlet pipe, 5-waste acid outlet, 6-waste alkali outlet, 7-first drain pipe, 8-second drain pipe, 9-siphon breaking port, 10-air compression pump, 11-desalting water tank, 12-water pipe, 13-waste acid recovery tank, 14-waste alkali recovery tank, 15-cationic resin discharge pipe, 16-first desalted water discharge pipe, 17-anion resin discharge pipe, 18-second desalted water discharge pipe, 19-flushing pipe, 20-water spray pipe, 21-spray head, 22-barrier net, 23-distributor, 24-barrier net. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0022] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] Example 1
[0025] like Figure 1-2 As shown, the present embodiment provides a regeneration device for an ion exchange column, comprising a cation resin regeneration tank 1 and an anion resin regeneration tank 2, wherein the lower portion of the cation resin regeneration tank 1 is connected with an acid liquid inlet pipe 3, and the upper portion of the anion resin regeneration tank 2 is connected with an alkali liquid inlet pipe 4, the height of the alkali liquid inlet pipe 4 being the same as the height of the resin, and the liquid outlet ends of the acid liquid inlet pipe 3 and the alkali liquid inlet pipe 4 are both provided with distributors 23, the upper portion of the cation resin regeneration tank 1 is provided with a waste acid liquid discharge port 5, the height of the waste acid liquid discharge port 5 being the same as the height of the resin, the lower portion of the anion resin regeneration tank 2 is provided with a waste alkali liquid discharge port 6, the waste acid liquid discharge port 5 is connected with a first liquid discharge pipe 7, the waste alkali liquid discharge port 6 is connected with a second liquid discharge pipe 8, the first liquid discharge pipe 7 and the second liquid discharge pipe 8 are both provided with siphon breaking ports 9 at the same level with the resin, and barrier nets 22 are provided in the cation resin regeneration tank 1 and the anion resin regeneration tank 2.
[0026] Before the cation resin and the anion resin are regenerated, they need to be rinsed with water to remove large particles of impurities in the resin. By setting the siphon break port 9, the water in the cation resin regeneration tank 1 and the anion resin regeneration tank 2 can be completely discharged, that is, the water can be discharged to the resin surface. In this way, when adding acid or alkali, it can be avoided that the water is not discharged to dilute the acid and alkali, and the concentration of the acid or alkali is prevented from decreasing, thereby ensuring that the high concentration of acid and alkali can be used to directly contact the resin, enhance the ion exchange of the acid and alkali and the resin, and effectively improve the acid and alkali utilization rate, reduce the amount of acid and alkali used, and improve the regeneration effect of the off-exchange resin. The distributor 23 can make the acid evenly distributed on the cross section of the cation resin regeneration tank 1, and the alkali evenly distributed on the cross section of the anion resin regeneration tank 2, thereby improving the treatment effect of the acid and alkali on the resin. The barrier net 22 can prevent the resin from floating on the surface of the acid or alkali, and improve the regeneration efficiency and regeneration completion rate of the resin. Among them, the barrier net 22 can be set on the surface of the resin.
[0027] In the present embodiment, the positive resin regeneration tank 1 and the negative resin regeneration tank 2 are both provided with a stirring mechanism, and the stirring mechanism is an air compression pump 10, and the air compression pump 10 is connected with the positive resin regeneration tank 1 and the negative resin regeneration tank 2 through an air duct. After passing through acid or alkali solution, it is necessary to allow acid and positive resin, alkali solution and negative resin to react for a period of time, and compressed air is pumped into the positive resin regeneration tank 1 and the negative resin regeneration tank 2 by the air compression pump 10, and the acid-base solution and the negative resin are stirred by compressed air, so that the ion exchange speed of the acid and positive resin, the alkali solution and the negative resin can be improved, and they can also be fully contacted, so as to improve the resin regeneration effect and the regeneration completion rate. Passing through compressed air for stirring can avoid mechanical damage of the stirring mechanism to the resin, and ensure the quality of the resin. In other embodiments, the acid-base solution and the negative resin can also be stirred by Roots blower blast.
[0028] In this embodiment, the cation resin regeneration tank 1 and the anion resin regeneration tank 2 are both connected with a spray mechanism, which includes a desalted water tank 11, a water pipe 12, a water spray pipe 20 and a nozzle 21. The water pipes 12 are arranged on both sides of the desalted water tank 11, and the water spray pipes 20 are arranged on the inner top surfaces of the cation resin regeneration tank 1 and the anion resin regeneration tank 2. The water pipes 12 are connected to the water spray pipes 20, and the nozzles 21 are installed on the water spray pipes 20. Among them, a water pump is arranged between the water pipe 12 and the desalted water tank 10. After the acid or alkali reaction is completed, the water pump is started, and the water pump conveys the desalted water in the desalted water tank 11 to the water pipe 12, and then conveys it to the water spray pipe 20 through the water pipe 12, and sprays it from the nozzle 21 of the water spray pipe 20, thereby washing the resin, removing the acid and alkali liquid on the surface of the resin, and removing other impurities in the resin, and then discharging the sewage after washing to complete the regeneration of the resin.
[0029] In this embodiment, the end of the first drain pipe 7 away from the waste acid liquid discharge port 5 is connected to the waste acid liquid recovery tank 13, and the end of the second drain pipe 8 away from the waste alkali liquid discharge port 6 is connected to the waste alkali liquid recovery tank 14. After the acid or alkali liquid reaction is completed, the waste acid liquid in the cation resin regeneration tank 1 can be discharged from the waste acid liquid discharge port 5, and enter the waste acid liquid recovery tank 13 through the first drain pipe 7, and the waste alkali liquid in the anion resin regeneration tank 2 can be discharged from the waste alkali liquid discharge port 6, and enter the waste alkali liquid recovery tank 14 through the second drain pipe 8, so as to facilitate the subsequent treatment of the waste acid liquid and the waste alkali liquid.
[0030] In this embodiment, the bottom of the cation resin regeneration tank 1 is connected to a cation resin discharge pipe 15 and a first desalted water discharge pipe 16, and the bottom of the anion resin regeneration tank 2 is connected to an anion resin discharge pipe 17 and a second desalted water discharge pipe 18. In this way, the sewage generated after the desalted water is used to wash the resin can be discharged from the first desalted water discharge pipe 16 and the second desalted water discharge pipe 18, which can improve the sewage discharge effect.
[0031] In this embodiment, a material blocking net 24 is provided in both the first desalted water discharge pipe 16 and the second desalted water discharge pipe 18. This can prevent the resin raw material from being discharged from the first desalted water discharge pipe 16 and the second desalted water discharge pipe 18, thereby improving the resin utilization rate.
[0032] In this embodiment, the lower parts of the cation resin regeneration tank 1 and the anion resin regeneration tank 2 are also connected with a flushing pipe 19. The resin before regeneration can be flushed through the flushing pipe 19, and the resin can also be flushed twice after desalted water treatment to improve the resin treatment effect.
[0033] The working principle of a regeneration device for an ion exchange column is as follows: first, the resins in the cation resin regeneration tank 1 and the anion resin regeneration tank 2 are flushed through a flushing pipe 19, and then water is discharged from the first drain pipe 7 and the second drain pipe 8, and the water is discharged to be flush with the resin surface under the action of a siphon breaking port 9. Then, an acid solution is introduced into the cation resin regeneration tank 1, and an alkali solution is introduced into the anion resin regeneration tank 2. Similarly, under the action of the siphon breaking port 9, the acid solution and the alkali solution are flush with the resin surface. After the acid and alkali solution react with the resin for a period of time, the air compression pump 10 is started, and the air compression pump 10 pumps compressed air into the cation resin regeneration tank 1 and the anion resin regeneration tank 2. The acid and alkali solution and the anion and cation resins are stirred by the compressed air, thereby accelerating the processing speed and improving the contact degree between the acid and alkali solution and the resin. After the reaction is completed, the waste acid liquid in the cation resin regeneration tank 1 is discharged from the waste acid liquid outlet 5, and enters the waste acid liquid recovery tank 13 through the first liquid discharge pipe 7, and the waste alkali liquid in the anion resin regeneration tank 2 is discharged from the waste alkali liquid outlet 6, and enters the waste alkali liquid recovery tank 14 through the second liquid discharge pipe 8. Then the water pump is started, and the water pump conveys the deionized water in the deionized water tank 11 to the water delivery pipe 12, and then conveys it to the water spray pipe 20 through the water delivery pipe 12, and sprays it from the nozzle 21 of the water spray pipe 20, thereby washing the resin, and the sewage generated after washing the resin is discharged from the first deionized water discharge pipe 16 and the second deionized water discharge pipe 18.
[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A regeneration device for an ion exchange column, characterized in that: It comprises a cation resin regeneration tank and a negative resin regeneration tank, wherein the lower part of the cation resin regeneration tank is connected with an acid inlet pipe, the upper part of the negative resin regeneration tank is connected with an alkali inlet pipe, the height of the alkali inlet pipe is the same as the height of the resin, the liquid outlet ends of the acid inlet pipe and the alkali inlet pipe are both provided with distributors, the upper part of the cation resin regeneration tank is provided with a waste acid outlet, the height of the waste acid outlet is the same as the height of the resin, the lower part of the negative resin regeneration tank is provided with a waste alkali outlet, the waste acid outlet is connected with a first drain pipe, the waste alkali outlet is connected with a second drain pipe, the first drain pipe and the second drain pipe are both provided with siphon breaking ports at the same level with the resin, and barrier nets are provided in the cation resin regeneration tank and the negative resin regeneration tank.
2. The regeneration device for the ion exchange column according to claim 1, characterized in that: The cation resin regeneration tank and the anion resin regeneration tank are both provided with a stirring mechanism, and the stirring mechanism is an air compression pump, and the air compression pump is connected to the cation resin regeneration tank and the anion resin regeneration tank through an air pipeline.
3. The regeneration device of the ion exchange column according to claim 1, characterized in that: The cation resin regeneration tank and the anion resin regeneration tank are both connected to a spray mechanism, and the spray mechanism includes a desalted water tank, a water supply pipe, a water spray pipe and a nozzle. Water supply pipes are arranged on both sides of the desalted water tank, and the water spray pipes are arranged on the inner top surfaces of the cation resin regeneration tank and the anion resin regeneration tank. The water supply pipes are connected to the water spray pipes, and the nozzle is installed on the water spray pipes.
4. The regeneration device for the ion exchange column according to claim 1, characterized in that: One end of the first liquid discharge pipe away from the waste acid liquid discharge outlet is connected to a waste acid liquid recovery box, and one end of the second liquid discharge pipe away from the waste alkali liquid discharge outlet is connected to a waste alkali liquid recovery box.
5. The regeneration device of the ion exchange column according to claim 1, characterized in that: The bottom of the cation resin regeneration tank is connected to a cation resin discharge pipe and a first deionized water discharge pipe, and the bottom of the anion resin regeneration tank is connected to an anion resin discharge pipe and a second deionized water discharge pipe.
6. The regeneration device for the ion exchange column according to claim 5, characterized in that: The first demineralized water discharge pipe and the second demineralized water discharge pipe are both provided with a material blocking net.
7. The regeneration device of the ion exchange column according to claim 1, characterized in that: The lower parts of the cation resin regeneration tank and the anion resin regeneration tank are also connected with flushing pipes.