Countercurrent regeneration ion exchanger

Abstract

The utility model discloses a countercurrent regeneration ion exchanger which comprises a container body, an intermediate discharge device is arranged in the container body, a grease pressing layer located above the intermediate discharge device and a working layer located below the intermediate discharge device are arranged in the container body, and the grease pressing layer and the working layer are both provided with resin with ion exchange capacity. The exterior of the container body is connected with a middle drainage pipeline communicated with the middle drainage device, and the middle drainage pipeline is provided with a regeneration drainage valve with adjustable opening degree. According to the countercurrent regeneration ion exchanger disclosed by the utility model, the space above the middle discharge device in the container is well utilized, and the obtaining of larger periodic water production is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of ion exchangers, in particular to a countercurrent regeneration ion exchanger. Background Art

[0002] The current countercurrent regenerative ion exchanger uses a material with no ion exchange capacity in the fat pressing layer, resulting in the space above the middle row device inside the container not being well used to increase the cycle water production. Therefore, it is necessary to improve the traditional countercurrent regenerative ion exchanger to improve its working performance. Utility Model Content

[0003] The utility model provides the following technical solutions:

[0004] A countercurrent regenerative ion exchanger comprises a container body, wherein a middle row device is arranged in the container body, a fat pressing layer located above the middle row device and a working layer located below the middle row device are arranged inside the container body, and both the fat pressing layer and the working layer are provided with resin with ion exchange capacity; an intermediate drainage pipeline connected to the middle row device is connected to the outside of the container body, and the intermediate drainage pipeline is provided with a regeneration drainage valve with adjustable opening size.

[0005] Optionally, in the above-mentioned countercurrent regeneration ion exchanger, the regeneration drain valve is configured as a solenoid valve.

[0006] Optionally, the countercurrent regeneration ion exchanger includes a small backwash water inlet pipeline arranged in parallel with the intermediate drainage pipeline, and the small backwash water inlet pipeline is provided with a small backwash water inlet valve.

[0007] Optionally, in the above-mentioned countercurrent regeneration ion exchanger, the position of the small backwash water inlet pipeline is higher than the position of the intermediate liquid discharge pipeline.

[0008] Optionally, in the above-mentioned countercurrent regeneration ion exchanger, the part of the side wall of the container body near the top is connected to the top pressure air pipeline, the top pressure air pipeline is provided with a top pressure air valve, and the position of the top pressure air pipeline is higher than the fat pressure layer.

[0009] Optionally, in the above-mentioned countercurrent regeneration ion exchanger, the top of the container body is connected to an inverted J-shaped first main pipe, the end of the first main pipe is connected to a water inlet pipe and a backwash drainage pipe symmetrically arranged on both sides of the first main pipe, the water inlet pipe is provided with a water inlet valve, and the backwash drainage pipe is provided with a backwash drainage valve, and the positions of the water inlet pipe and the backwash drainage pipe are lower than the position of the middle row device.

[0010] Optionally, in the above-mentioned countercurrent regeneration ion exchanger, the bottom of the container body is connected to a J-shaped second main pipe, and the end of the second main pipe is connected to a backwash inlet pipe and a water outlet pipe symmetrically arranged on both sides of the second main pipe, the backwash inlet pipe is provided with a backwash inlet valve, and the water outlet pipe is provided with a water outlet valve, and the positions of the backwash inlet pipe and the water outlet pipe are lower than the positions of the water inlet pipe and the backwash drain pipe.

[0011] Optionally, in the above-mentioned countercurrent regeneration ion exchanger, the part of the second main pipe near the end is connected to the regeneration liquid inlet pipeline and the forward wash drainage pipeline symmetrically arranged on both sides of the second main pipe, the regeneration liquid inlet pipeline is provided with a regeneration liquid inlet valve, and the forward wash drainage pipeline is provided with a forward wash drainage valve, and the positions of the regeneration liquid inlet pipeline and the forward wash drainage pipeline are higher than the bottom of the container body.

[0012] Optionally, the countercurrent regeneration ion exchanger includes a drainage pipeline connected to the second main pipe, the drainage pipeline is provided with a drainage valve, and the position of the drainage pipeline is lower than the bottom of the container body.

[0013] The countercurrent regeneration ion exchanger provided by the utility model has the following beneficial effects:

[0014] By adjusting the opening of the regeneration drain valve and setting the intermediate drain flow rate lower than the regeneration inlet flow rate, the regeneration liquid level in the exchanger can be raised to a point where it submerges the grease-pressing layer, thereby regenerating the resin in the grease-pressing layer. The grease-pressing layer, like the working layer, has ion exchange capacity, making good use of the space above the intermediate drain device inside the container, thereby achieving a greater water production capacity per cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the external structure of the countercurrent regeneration ion exchanger provided by an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the countercurrent regeneration ion exchanger provided in an embodiment of the present utility model.

[0018] The following are marked in the figure:

[0019] 1. Container body; 2. First main pipe; 3. Small backwash water inlet valve; 4. Regeneration drain valve; 5. Water inlet valve; 6. Backwash water inlet valve; 7. Regeneration liquid inlet valve; 8. Drain valve; 9. Second main pipe; 10. Forward wash drain valve; 11. Water outlet valve; 12. Backwash drain valve; 13. Top pressure air inlet valve; 14. Water inlet device; 15. Grease pressing layer; 16. Middle drain device; 17. Working layer; 18. Drain device. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1 and Figure 2 The embodiment of the utility model provides a countercurrent regeneration ion exchanger, comprising a container body 1, wherein a middle row device 16 is provided in the container body 1, and a fat pressing layer 15 located above the middle row device 16 and a working layer 17 located below the middle row device 16 are also provided, wherein the fat pressing layer 15 and the working layer 17 are both provided with a resin having ion exchange capacity, that is, the fat pressing layer 15 not only plays the role of stabilizing the working layer 17, but also plays the role of ion exchange, that is, in the normal water production process, the fat pressing layer 15 and the working layer 17 both participate in the ion exchange work. The outside of the container body 1 is connected to an intermediate drainage pipeline connected to the middle row device 16, and the intermediate drainage pipeline is provided with a regeneration drainage valve 4 with an adjustable opening size. Adjustable opening size means that the regeneration drainage valve 4 can achieve different sizes of flow areas when it is open, thereby changing the liquid flow passing therethrough.

[0022] During regeneration, by adjusting the opening of the regeneration drain valve 4 and setting the intermediate drain flow rate lower than the incoming regeneration liquid flow rate, the regeneration liquid level in the exchanger slowly rises until it submerges the grease-pressing layer 15, that is, the regeneration liquid level is higher than the grease-pressing layer 15. The opening of the regeneration drain valve 4 is then adjusted again, setting the intermediate drain flow rate equal to the incoming regeneration liquid flow rate, and maintaining the regeneration liquid level constant for 1 hour to complete the regeneration process. The grease-pressing layer 15, like the working layer 17, has ion exchange capacity, making good use of the space above the intermediate drain device 16 within the container, thereby achieving a greater cycle water production capacity of the exchanger.

[0023] In a preferred embodiment, the regeneration drain valve 4 is configured as a solenoid valve, which is convenient for automatic control and can make the valve opening more accurately controlled. Of course, the regeneration drain valve 4 can also be configured as other types, as long as the opening size can be adjusted. On the basis of being provided with a regeneration drain valve 4 with adjustable opening size, the intermediate drain pipeline can be provided with a switch valve upstream of the regeneration drain valve 4, that is, on the side of the regeneration drain valve 4 close to the container body 1. The switch valve has only an opening and closing function and cannot adjust the opening size, that is, the switch valve has only a fixed opening size in the open state. When it is necessary to close the intermediate drain pipeline, the regeneration drain valve 4 and the switch valve can be operated together to implement the closure, thereby improving the safety of the equipment. Moreover, since the switch valve has only an opening and closing function, the closing action is usually faster, which is conducive to more efficient closure of the intermediate drain pipeline.

[0024] In a preferred embodiment, the countercurrent regeneration ion exchanger includes a small backwash inlet pipe arranged in parallel with the intermediate drainage pipe, and the small backwash inlet pipe is provided with a small backwash inlet valve 3. When the small backwash process is carried out, the backwash water flows along the small backwash inlet pipe through the small backwash inlet valve 3 into the intermediate drainage device 16. When the small backwash inlet pipe and the intermediate drainage pipe are arranged, the position of the small backwash inlet pipe can be made higher than the position of the intermediate drainage pipe. It should be noted that the position mentioned here refers to the position of the small backwash inlet pipe and the intermediate drainage pipe close to the container body 1, when the pipe extends to a place farther away at a certain distance from the container body 1, for example Figure 2 In other places not shown, the position of the small backwash water inlet pipe may be changed to be lower than the position of the intermediate drain pipe. That is to say, in a place closer to the container body 1, the position of the small backwash water inlet pipe is made higher than the position of the intermediate drain pipe as much as possible, which is conducive to the regeneration liquid being discharged more smoothly from the intermediate device.

[0025] In a preferred embodiment, the sidewall of the container body 1, near the top, is connected to a top-pressure air inlet pipe, which is provided with a top-pressure air inlet valve 13. The top-pressure air inlet pipe is positioned higher than the fat-pressing layer 15. The top-pressure air enters the container body 1 from the sidewall, preventing the airflow from directly hitting the fat-pressing layer 15, thereby reducing disturbances caused by the airflow to the fat-pressing layer 15.

[0026] In a preferred embodiment, the top of the container body 1 is connected to an inverted J-shaped first main pipe 2, and the end of the first main pipe 2 is connected to the water inlet pipe and the backwash drain pipe symmetrically arranged on both sides of the first main pipe 2. The water inlet pipe is provided with a water inlet valve 5, and the backwash drain pipe is provided with a backwash drain valve 12. The positions of the water inlet pipe and the backwash drain pipe are lower than the position of the middle row device 16. It should be noted that the position mentioned here refers to the position of the water inlet pipe and the backwash drain pipe close to the first main pipe 2, that is, the first main pipe 2 extends downward from the top of the container body 1 to a position lower than the middle row device 16, and then branches into two at the end, one is the water inlet pipe, and the other is the backwash drain pipe. Figure 2 As shown, inside the container body 1, near the top, a water inlet device 14 is provided. The function of the water inlet device 14 is to evenly distribute the incoming water on the water flow section of the exchanger, and another function is to evenly collect the backwash drainage. Figure 1 As shown, during the water production process, the inlet water flows along the inlet pipe through the water inlet valve 5 and into the first main pipe 2. Then, from the first main pipe 2, it flows through the top of the container body 1 to the water inlet device 14. During the backwash process, the backwash water flows through the water inlet device 14 and flows into the first main pipe 2. Then, at the end of the first main pipe 2, it flows into the backwash drain pipe where the backwash drain valve 12 is located and is discharged.

[0027] In a preferred embodiment, the bottom of the container body 1 is connected to a J-shaped second main pipe 9, the ends of the second main pipe 9 are connected to the backwash inlet pipe and the outlet pipe symmetrically arranged on both sides of the second main pipe 9, the backwash inlet pipe is provided with a backwash inlet valve 6, and the outlet pipe is provided with an outlet valve 11. The positions of the backwash inlet pipe and the outlet pipe are lower than the positions of the water inlet pipe and the backwash drainage pipe. Figure 2 As shown, a drainage device 18 is provided near the bottom of the container body 1. This device evenly collects treated water and distributes backwash water. Treated water, which is obtained through ion exchange during the water production process, flows through the drainage device 18 into the second main pipe 9 and then flows out through the outlet pipe where the outlet valve 11 is located.

[0028] In a preferred embodiment, the portion near the end of the second main pipe 9 is connected to the regeneration liquid inlet pipeline and the forward wash drainage pipeline symmetrically arranged on both sides of the second main pipe 9. The regeneration liquid inlet pipeline is provided with a regeneration liquid inlet valve 7, and the forward wash drainage pipeline is provided with a forward wash drainage valve 10. The regeneration liquid inlet pipeline and the forward wash drainage pipeline are located above the bottom of the container body 1, that is, the location where the regeneration liquid inlet pipeline and the forward wash drainage pipeline connect to the second main pipe 9 is higher than the bottom of the container body 1. In addition, the drainage pipeline is connected to the second main pipe 9 at a location below the bottom of the container body 1, that is, the location where the drainage pipeline connects to the second main pipe 9 is lower than the bottom of the container body 1, and the drainage pipeline is provided with a drainage valve 8. The regeneration process of the grease pressing layer 15 and the working layer 17 is generally as follows: static drainage - reverse drainage of water - reverse drainage of regeneration liquid - regeneration end - replacement - forward wash - standby. During static drainage, the drainage valve 8 is opened, and the water in the container body 1 enters the second main pipe 9 from the bottom and then flows into the drainage pipeline.

[0029] The countercurrent regenerative ion exchanger of the present invention can be applied to a lyocell fiber desalination system, for example, as a countercurrent regenerative anion exchanger in a lyocell fiber desalination system. The desalination system process flow is as follows: raw water - fiber ball filter - countercurrent regenerative cation exchanger - decarbonizer - countercurrent regenerative anion exchanger - mixed bed - desalted water tank - user, wherein the countercurrent regenerative anion exchanger is the countercurrent regenerative ion exchanger provided by the present invention. In specific practical applications, the grease-pressing layer 15 and the working layer 17 can use ion exchange resins of the same density, or they can use ion exchange resins of different densities, for example, the resin density of the grease-pressing layer 15 is less than the resin density of the working layer 17.

[0030] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0031] The above description of the disclosed embodiments will enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.

Claims

1. A countercurrent regeneration ion exchanger, comprising a container body, wherein a middle row device is arranged in the container body, characterized in that: The container body is provided with a fat compression layer located above the middle row device and a working layer located below the middle row device, and both the fat compression layer and the working layer are provided with resins having ion exchange capacity; the outside of the container body is connected with an intermediate drainage pipeline connected to the middle row device, and the intermediate drainage pipeline is provided with a regeneration drainage valve with adjustable opening size.

2. The countercurrent regeneration ion exchanger according to claim 1, characterized in that: The regeneration drain valve is configured as a solenoid valve.

3. The countercurrent regeneration ion exchanger according to claim 1, characterized in that: It comprises a small backwash water inlet pipeline which is arranged in parallel with the intermediate liquid discharge pipeline, and the small backwash water inlet pipeline is provided with a small backwash water inlet valve.

4. The countercurrent regeneration ion exchanger according to claim 3, characterized in that: The position of the small backwash water inlet pipeline is higher than the position of the middle liquid discharge pipeline.

5. The countercurrent regeneration ion exchanger according to claim 1, characterized in that: The portion of the side wall of the container body close to the top is connected to a top pressure air inlet pipeline, the top pressure air inlet pipeline is provided with a top pressure air inlet valve, and the position of the top pressure air inlet pipeline is higher than the fat pressing layer.

6. The countercurrent regeneration ion exchanger according to any one of claims 1 to 5, characterized in that: An inverted J-shaped first main pipe is connected to the top of the container body, and the end of the first main pipe is connected to a water inlet pipe and a backwash drainage pipe symmetrically arranged on both sides of the first main pipe. The water inlet pipe is provided with a water inlet valve, and the backwash drainage pipe is provided with a backwash drainage valve. The positions of the water inlet pipe and the backwash drainage pipe are lower than the position of the middle drainage device.

7. The countercurrent regeneration ion exchanger according to claim 6, characterized in that: A J-shaped second main pipe is connected to the bottom of the container body, and the end of the second main pipe is connected to a backwash water inlet pipe and a water outlet pipe symmetrically arranged on both sides of the second main pipe. The backwash water inlet pipe is provided with a backwash water inlet valve, and the water outlet pipe is provided with a water outlet valve. The positions of the backwash water inlet pipe and the water outlet pipe are lower than the positions of the water inlet pipe and the backwash drainage pipe.

8. The countercurrent regeneration ion exchanger according to claim 7, characterized in that: The portion of the second main pipe near the end is connected to the regeneration liquid inlet pipeline and the forward wash drainage pipeline which are symmetrically arranged on both sides of the second main pipe. The regeneration liquid inlet pipeline is provided with a regeneration liquid inlet valve, and the forward wash drainage pipeline is provided with a forward wash drainage valve. The positions of the regeneration liquid inlet pipeline and the forward wash drainage pipeline are higher than the bottom of the container body.

9. The countercurrent regeneration ion exchanger according to claim 8, characterized in that: It comprises a drainage pipeline connected to the second main pipe, the drainage pipeline is provided with a drainage valve, and the position of the drainage pipeline is lower than the bottom of the container body.

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