Resin regeneration device

Abstract

The invention provides a resin regeneration device which comprises a container with an opening in the upper end, a negative electrode and a positive electrode are arranged in the container at a certain interval, a direct-current power supply for supplying power to the electrodes is arranged outside the container, the resin regeneration device further comprises a resin storage area between the negative electrode and the positive electrode, and the resin storage area is provided with a channel for ion exchange. The problem of inaccurate measurement of hydrogen conductivity caused by incomplete and large uncertainty of traditional resin manual regeneration is solved, the possibility of acid corrosion in the manual resin regeneration process of personnel is reduced, the maintenance amount of the personnel is reduced, the defects of low efficiency, slow and incomplete traditional manual resin regeneration are overcome, the resin is continuously and dynamically activated, and the measurement accuracy of hydrogen conductivity is improved. And the resin is always kept in a high-quality activated state.

Description

Technical Field

[0001] The invention relates to the technical field of resins, and in particular to a resin regeneration device. Background Art

[0002] The way to remove cations in power plants is to pass the measured sampled solution through a cation resin column for ion exchange. The resin will adsorb cations such as ammonium ions and sodium ions and replace hydrogen ions. Finally, the water sample replaced by the resin ions is supplied to the conductivity meter to measure the water quality. However, the activity of the resin in the cation exchange column is difficult to measure accurately. The replacement of the resin basically depends on the experience of the maintenance personnel to regularly replace the resin. It is usually determined by observing the color change of the resin in the ion exchange column or the time interval of the previous resin replacement work record, which has great uncertainty. The activity of the resin gradually decreases during the use period, and the conductivity measurement level will not be consistent during this period. The newly replaced tree is activated by soaking the old resin in hydrochloric acid, but the resin regenerated by static acid soaking cannot be fully activated. The measured conductivity level is generally lower than the true value, which cannot fully meet the water quality monitoring needs of thermal power plants. The newly replaced tree is activated by soaking the old resin in hydrochloric acid. Whether it is completed basically depends on the experience of the maintenance personnel to make a judgment, and the regeneration process is lengthy and slow, generally requiring soaking for more than 72 hours, resulting in meaningless time consumption. Furthermore, during manual acid regeneration, maintenance personnel need to frequently disassemble the ion exchange column, pour out the resin in the column, and then transfer it to a hydrochloric acid solution of a certain concentration for static activation. Frequent disassembly of the ion exchange column causes the ion exchange column joints to slip and leak, and will generate frequent and large amounts of maintenance work, which will also increase the risk of personnel contacting acid corrosion. Traditional artificial regeneration resins require long-term water cleaning after replacement. Especially when the unit is started, the resin flushing stage cannot accurately and quickly reflect the actual value of hydrogen conductivity, and the unit is at risk of exceeding the water quality standard. The actual value of hydrogen conductivity is inaccurate, and the operating personnel and maintenance personnel cannot distinguish whether the cause of the inaccurate actual value of hydrogen conductivity is resin failure or abnormal water quality, which can easily mislead the operating personnel and maintenance personnel. Summary of the invention

[0003] The present invention provides a resin regeneration device to solve the technical defects of the above-mentioned prior art.

[0004] In order to solve the above technical problems, the technical solution of the present invention is a resin regeneration device, including a container with an opening at the upper end, wherein a cathode electrode and an anode electrode are arranged at a certain distance inside the container, a DC power supply for supplying power to the electrodes is arranged outside the container, and also includes a resin storage area between the cathode electrode and the anode electrode, and the resin storage area is provided with a channel for ion exchange.

[0005] Specifically, the resin storage area of ​​the resin regeneration device places a cation exchange membrane facing the cathode electrode and the anode electrode.

[0006] Specifically, the cation exchange membrane of the resin regeneration device is a perfluorosulfonic acid membrane.

[0007] Specifically, a through hole is provided at the bottom of the container of the resin regeneration device in the resin storage area, and the size of the through hole can ensure that the solution soaks the cathode electrode, the anode electrode and the resin in the resin storage area when the solution enters and exits the container.

[0008] Specifically, near the through hole of the resin regeneration device, a valve is provided inside the container, and the valve is provided with a driving motor. The driving motor operates under computer control. When liquid is added to the container, the valve is opened, and when liquid stops adding, the valve is closed.

[0009] Specifically, the resin regeneration device is provided with two sets, and the working modes of the two sets of resin regeneration devices are switched under computer control, wherein when one set of resin regeneration device activates the resin, the other set of resin regeneration device replaces the solution.

[0010] Specifically, the activation solution of the resin regeneration device comes from the replacement solution.

[0011] Specifically, the DC power supply of the resin regeneration device provides a voltage of 24V.

[0012] Specifically, the cathode electrode of the resin regeneration device is made of platinum.

[0013] Specifically, the anode electrode of the resin regeneration device is a titanium-based metal oxide coated anode electrode.

[0014] Due to the arrangement of the cathode electrode and the anode electrode, the present invention has the following beneficial effects:

[0015] 1. It solves the problem of inaccurate hydrogen conductivity measurement caused by incomplete artificial regeneration of traditional resins, reliance on subjective operations of maintenance personnel, and large uncertainty, improves the measurement reliability of the hydrogen conductivity meter, and ensures that the steam-water indicators are within the standard range.

[0016] 2. Reduce the possibility of acid corrosion during the manual resin regeneration process and protect the personal safety of operators.

[0017] 3. Avoid maintenance personnel from frequently replacing resins, which may cause the ion exchange column joints to slip and cause water leakage, and reduce the maintenance workload of personnel.

[0018] 4. Overcome the inefficiency, slowness and incompleteness of traditional artificial resin regeneration, enable continuous dynamic activation of the resin, and keep the resin in a high-quality activated state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0020] Figure 1 The schematic diagram of the resin regeneration device in the embodiment

[0021] Figure 2 Schematic diagram of the resin regeneration device in the embodiment

[0022] Among them, 1 container, 2 positive electrode, 3 negative electrode, 4 resin storage area DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0024] Unless otherwise defined, technical or scientific terms used herein shall have the common meanings understood by a person having ordinary skills in the field to which this application belongs.

[0025] The specific implementation modes of the present invention are described in detail and completely below in conjunction with the accompanying drawings.

[0026] like Figure 1 , Figure 2As shown, the technical solution of the present invention is a resin regeneration device, including a container 1 with an upper opening, a cathode electrode 3 and an anode electrode 2 are arranged at a certain distance in the container, a DC power supply for supplying power to the electrodes is arranged outside the container, and a resin storage area 4 is also included between the cathode electrode 3 and the anode electrode 2, and the resin storage area is provided with a channel for ion exchange. When the resin regeneration device is used, a cationic group electrolytic solution is injected into the container 1 to soak the cathode electrode 3, the anode electrode 2, and the resin storage area 4, and the anions and cations are guided to move to specific electrodes by electrifying the electrodes. According to the principle of water electrolysis, hydrogen ions move toward the cathode 3, lose their charge, become hydrogen gas and escape, and at the same time, due to the reduction of hydrogen ions, water molecules near the cathode are further ionized to form more hydrogen ions and hydroxide ions. At anode 2, the hydroxide ions moving toward anode 2 lose electrons and generate water molecules and oxygen. When the hydrogen ions enter the resin regeneration area, they are exchanged with cations such as ammonium ions and sodium ions in the resin regeneration area. The cations such as ammonium ions and sodium ions enter the resin regeneration area. The hydrogen ions enter the resin regeneration area and adsorb on the resin to achieve the activation and regeneration of the resin. The resin is activated by the hydrogen ions continuously generated by the electrode, and the hydrogen ion concentration will not decrease, so that it can be activated efficiently. Moreover, when not in use, the device is always powered on to keep the resin in a high-quality activation state. When measuring a water sample, when the water sample passes through the regenerated resin, the sodium ions, potassium ions and ammonium ions in the water sample will be adsorbed on the resin. The hydrogen ions in the resin enter the water sample and enter the conductivity measurement circuit with other anions to complete the conductivity measurement and the water quality measurement.

[0027] Specifically, the resin storage area of ​​the resin regeneration device places a cation exchange membrane facing the negative electrode 3 and the positive electrode 2. When power is applied outside the membrane, through the action of the electric field, the hydrogen ions outside the resin regeneration area 4 can overcome the action of water molecules, be attracted to the membrane and pass through the membrane, and adsorb on the resin in the resin regeneration area 4. Cations such as ammonia ions and sodium ions enter the outside of the resin regeneration area, while anions cannot pass through due to like-charge repulsion, thereby achieving efficient ion selectivity and enhancing the effect of resin regeneration.

[0028] Specifically, the cation exchange membrane of the resin regeneration device is a perfluorosulfonic acid membrane, which has good chemical stability, excellent ion conductivity, high temperature resistance, and is suitable for high temperature working environment.

[0029] Specifically, a through hole is provided at the bottom of the container of the resin regeneration device in the resin storage area. The size of the through hole can ensure that the solution soaks the cathode electrode, the anode electrode and the resin in the resin storage area when the solution enters and exits the container. This design can satisfy the requirement that after the resin is activated, the solution can be subjected to the next step of operation.

[0030] Specifically, near the through hole of the resin regeneration device, a valve is provided on the inner side of the container, and the valve is provided with a driving motor. The driving motor operates under computer control. When liquid is introduced into the container, the valve is opened, and when liquid is stopped, the valve is closed, thereby meeting the needs of different working scenarios.

[0031] Specifically, the resin regeneration device is provided with two sets, and the working modes of the two sets of resin regeneration devices are switched under computer control. When one set of resin regeneration device activates the resin, the other set of resin regeneration device replaces the solution, which can improve the efficiency of resin regeneration and water quality measurement to realize real-time regeneration of the resin, meet the supply demand of online water quality conductivity monitoring equipment for activated resin in various scenarios, and realize 24-hour uninterrupted online measurement.

[0032] Specifically, the activation solution of the resin regeneration device comes from the displacement solution. During activation, the activation solution is separated from the displacement solution, and there is no need to specially introduce the activation solution, thereby simplifying the process.

[0033] Specifically, the DC power supply of the resin regeneration device provides a 24V voltage. Experimental verification shows that a 24V voltage achieves the best resin regeneration effect.

[0034] Specifically, the negative electrode 3 of the resin regeneration device is made of platinum, which has extremely high chemical stability and corrosion resistance, can maintain a stable electrochemical effect in various acidic and alkaline environments, has high catalytic activity, and helps to improve the sensitivity and accuracy of water quality monitoring.

[0035] Specifically, the anode 2 of the resin regeneration device is a titanium-based metal oxide coated anode, which has high corrosion resistance, electrochemical activity and long service life.

[0036] The above description is merely an exemplary embodiment of the present application and is not intended to limit the protection scope of the present application. The protection scope of the present application is determined by the appended claims.

Claims

1. A resin regeneration device, characterized in that The invention comprises a container (1) with an opening at the top, wherein a cathode electrode (3) and an anode electrode (2) are arranged at a certain distance inside the container, a DC power supply for supplying power to the electrodes is arranged outside the container, and a resin storage area (4) is provided between the cathode electrode (3) and the anode electrode (2), wherein the resin storage area (4) is provided with a channel for ion exchange.

2. A resin regeneration device according to claim 1, characterized in that The resin storage area (4) is provided with a cation exchange membrane facing the cathode electrode (3) and the anode electrode (2).

3. A resin regeneration device according to claim 2, characterized in that The cation exchange membrane is a perfluorosulfonic acid membrane.

4. A resin regeneration device according to claim 1, characterized in that The bottom of the container is provided with a through hole in the resin storage area (4), and the size of the through hole can ensure that the solution soaks the cathode electrode (3), the anode electrode (2) and the resin in the resin storage area (4) when the solution enters and exits the container.

5. A resin regeneration device according to claim 4, characterized in that A valve is provided on the inner side of the container near the through hole. The valve is provided with a driving motor. The driving motor operates under computer control. When liquid is introduced into the container, the valve is opened. When liquid is stopped, the valve is closed.

6. A resin regeneration device according to claim 1, characterized in that The resin regeneration device is provided with two sets, and the working modes of the two sets of resin regeneration devices are switched under computer control. When one set of resin regeneration device activates the resin, the other set of resin regeneration device replaces the solution.

7. A resin regeneration device according to claim 6, characterized in that The activation solution of the resin regeneration device comes from the replacement solution.

8. A resin regeneration device according to claim 1, characterized in that The DC power supply provides a 24V voltage.

9. The resin regeneration device according to any one of claims 1 to 8, characterized in that The cathode electrode (3) is made of platinum.

10. The resin regeneration device according to any one of claims 1 to 8, characterized in that The anode electrode (2) is a titanium-based metal oxide coated anode electrode.

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