Movable color-changing cation exchange resin dynamic regeneration device

Abstract

The utility model relates to the technical field of exchange resin regeneration devices, in particular to a movable color-changing cation exchange resin dynamic regeneration device which comprises an exchange column, a medicine dissolving box, a resin collecting box, a waste liquid collecting box, a flow meter and a bearing vehicle. The upper portion of the exchange column is connected with the medicine dissolving box, the lower portion of the exchange column is connected with the resin conveying pipe, the lower end filter screen is connected with the waste liquid outlet pipe, the waste liquid outlet pipe is connected with the backwashing water pipe through a three-way pipe opening, and the top of the resin collecting box is connected to the bottom of the exchange column through the resin conveying pipe. And the bottom of the resin collecting box is connected with a resin discharging pipe. According to the utility model, the functions of filling, backwashing, regenerating, flushing, transferring and the like of one exchange column on resin are realized through gravity and siphoning, and the effect of dynamic regeneration is effectively achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of exchange resin regeneration, in particular to a movable color-changing cation exchange resin dynamic regeneration device. Background Art

[0002] In the production process of the power plant, in order to ensure the safety of the water vapor indicators of the unit, it is necessary to frequently test the water quality of the circulating water and the water quality of the heat network drain. For the monitoring of water quality indicators, there are online sodium ion concentration meters, online silicon meters and online hydrogen conductivity meters in the prior art. However, both the online sodium ion concentration meter and the online silicon meter have more or less problems of discontinuous measurement data and large data change range. In comparison, the measurement of hydrogen conductivity has the advantages of continuity, high efficiency and low error, and can effectively characterize the water vapor purity and corrosiveness of the power plant. Measuring hydrogen conductivity can directly find the total amount of impurity anions in the water vapor system and boiler pipelines of the power plant, which helps operators to quickly grasp the corrosion of the system and ensure the safe operation of the system. Specifically, hydrogen conductivity refers to the conductivity value obtained by online monitoring of the conductivity of the measured water (steam) sample after it flows continuously through the hydrogen type cation exchange resin.

[0003] For online measurement of hydrogen conductivity, attention should be paid to monitoring the failure endpoint and efficient regeneration of the resin. Specifically, after the hydrogen-type cation exchange column has been running for a period of time, the cation exchange resin will fail and need to be regenerated to the hydrogen type. If the failed resin is discarded, it will be a waste; if the resin is regenerated by static immersion in vitro, its regeneration degree is low, generally not exceeding 70%. Insufficient regeneration of the cationic resin will cause low hydrogen conductivity measurement results, and the deterioration of water vapor quality cannot be discovered in time, which will bring hidden dangers to the safe operation of the power plant. Studies have shown that the current online hydrogen conductivity meter measurement values ​​of thermal power plants generally have additional errors of hydrogen exchange columns, and this error is mainly caused by the low regeneration degree of the resin. Therefore, there is an urgent need for a dynamic regeneration device to improve the regeneration degree of the cationic resin. Utility Model Content

[0004] The purpose of the utility model is to provide a movable color-changing cation exchange resin dynamic regeneration device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a movable color-changing cation exchange resin dynamic regeneration device, comprising an exchange column, a dissolving drug box, a resin collection box, a waste liquid collection box, a flow meter and a carrier vehicle, wherein a lower end filter screen is arranged at the bottom of the exchange column, and a scale line is arranged on the exchange column, the upper part of the exchange column is connected to the dissolving drug box, the lower part of the exchange column is connected to the resin delivery pipe, the lower end filter screen is connected to the waste liquid outlet pipe, the waste liquid outlet pipe is connected to the backwashing water pipe through a three-way pipe opening, the top of the resin collection box is connected to the bottom of the exchange column through the resin delivery pipe, the bottom of the resin collection box is connected to the fat discharge pipe, the waste liquid collection box is connected to the bottom of the lower end filter screen through the waste liquid outlet pipe, the bottom of the waste liquid collection box is connected to the waste liquid discharge pipe, the flow meter is arranged in the middle of the waste liquid outlet pipe and a flow regulating valve is arranged in front of it, the above-mentioned equipment is centrally arranged on the carrier vehicle, and wheels with self-locking function are arranged below the bottom of the carrier vehicle.

[0006] Preferably, the resin delivery pipe is further connected to the resin collection box via a resin discharge valve.

[0007] Preferably, the lower part of the lower filter screen is connected to a waste liquid outlet pipe, and the waste liquid outlet pipe is further connected to a waste liquid collection box via a flow regulating valve and a flow meter.

[0008] Preferably, one end of the backwash water pipe is connected to the waste liquid outlet pipe via a three-way pipe opening, a backwash valve is provided on the backwash water pipe, and the other end of the backwash water pipe is connected to a flushing water source via a hose.

[0009] Preferably, the upper end cover of the drug dissolving box is detachable.

[0010] Preferably, a flow regulating valve is provided in front of the flow meter.

[0011] Preferably, the bottom of the resin collection box is funnel-shaped, the bottom of the resin collection box is connected to a resin discharge pipe, and a grease drain valve is provided on the resin discharge pipe.

[0012] Preferably, the bottom of the waste liquid collection box is connected to a waste liquid discharge pipe, and a waste liquid discharge valve is provided on the waste liquid discharge pipe.

[0013] Preferably, the movable color-changing cation exchange resin dynamic regeneration device is centrally arranged on a carrier vehicle, and wheels with a self-locking function are provided below the carrier vehicle.

[0014] Compared with the prior art, the utility model has the beneficial effects of realizing functions such as resin loading, backwashing, regeneration, flushing, and transfer of an exchange column through gravity and siphon action, and effectively achieving the effect of dynamic regeneration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0016] In the figure: 1. Exchange column; 2. Dissolution box; 3. Resin collection box; 4. Waste liquid collection box; 5. Filter; 6. Flow meter; 7. Waste liquid outlet pipe; 8. Resin discharge valve; 9. Resin delivery pipe; 10. Resin discharge pipe; 11. Waste liquid discharge pipe; 12. Grease drain valve; 13. Waste liquid discharge valve; 14. Flow regulating valve; 15. Backwash valve; 16. Three-way pipe outlet; 17. Backwash water pipe; 18. Graduation line; 19. Upper end cover; 20. Carrying vehicle; 21. Wheels with self-locking function. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1 The utility model provides an embodiment: a movable color-changing cation exchange resin dynamic regeneration device, comprising an exchange column 1, a drug dissolving box 2, a resin collection box 3, a waste liquid collection box 4, a flow meter 6 and a carrier vehicle 20, characterized in that: a lower filter screen 5 is arranged at the bottom of the exchange column 1, a scale line 18 is arranged on the exchange column 1, the upper part of the exchange column 1 is connected to the drug dissolving box 2, the lower part of the exchange column 1 is connected to the resin delivery pipe 9, the lower filter screen 5 is connected to the waste liquid outlet pipe 7, the waste liquid outlet pipe 7 is connected to the backwash water pipe 17 The three-way pipe opening 16 is connected, the top of the resin collecting box 3 is connected to the bottom of the exchange column 1 through the resin delivery pipe 9, the bottom of the resin collecting box 3 is connected to the resin discharge pipe 10, the waste liquid collecting box 4 is connected to the bottom of the lower filter screen 5 through the waste liquid outlet pipe 7, the bottom of the waste liquid collecting box 4 is connected to the waste liquid discharge pipe 11, the flow meter 6 is arranged in the middle of the waste liquid outlet pipe 7 and a flow regulating valve 14 is provided in front of it. The above equipment is centrally arranged on the carrier 20, and wheels 21 with a self-locking function are provided under the bottom of the carrier 20.

[0019] The solvent tank 2 is at least 10 cm higher than the resin collection tank 3 and the waste liquid collection tank 4, so that the regeneration liquid can be automatically discharged by gravity.

[0020] The upper part of the exchange column 1 is connected to the solvent box 2, and the lower part of the exchange column 1 is connected to the resin delivery pipe 9, which is then connected to the resin collection box 3 through the resin discharge valve 8; a lower filter screen 5 is provided at the bottom of the exchange column 1, and the lower part of the lower filter screen 5 is connected to the waste liquid outlet pipe 7, which is then connected to the waste liquid collection box 4 through the flow regulating valve 14 and the flow meter 6.

[0021] One end of the backwash water pipe 17 is connected to the waste liquid outlet pipe 7 via a three-way pipe opening 16. A backwash valve 15 is provided on the backwash water pipe 17. The other end of the backwash water pipe 17 is connected to a flushing water source via a hose, and can be connected to a deionized water source such as a laboratory through the hose.

[0022] The exchange column 1 may be marked with scale lines 18. The upper end cover 19 of the exchange column 1 may be detachable.

[0023] The discharge amount of the acid solution, i.e., the regeneration solution, is adjusted by the flow regulating knob 14 in front of the flow meter 6 to ensure that the regeneration solution and the resin have sufficient ion exchange time to ensure the effect of resin regeneration and save the amount of regeneration solution.

[0024] Wheels 21 with a self-locking function may be provided below the dynamic regeneration device.

[0025] A lower filter screen 5 is provided at the lower part of the exchange column 1 to ensure that the resin does not flow out of the exchange column 1 .

[0026] The backwash water pipe 17 is connected to the laboratory water source through a hose, the resin discharge valve 8 and the backwash water valve 15 are opened, and the flow regulating valve 14 is closed, and the resin will be discharged from the resin delivery pipe 9 to the resin collection box 3 through gravity and siphon action.

[0027] The bottom of the resin collecting box 3 is funnel-shaped. When the grease release valve 12 is opened, the resin is discharged through the resin discharge pipe 10 for standby use.

[0028] After the waste liquid in the waste liquid collection box 4 is neutralized, the waste liquid discharge valve 13 is opened, and the waste liquid is discharged from the waste liquid discharge pipe 11 into the wastewater treatment ditch.

[0029] In a specific embodiment of the utility model, the maximum single regenerated resin volume is 35L; the box used is made of transparent plexiglass, the exchange column is made of transparent PVC, the valve and the tee are made of PVC, and the carrier vehicle is made of lightweight aluminum alloy. The material is lightweight and the total weight is less than 20 kilograms, and a single person can easily move it; the operating temperature is 5-40°C, the size is 1600mm×550mm×1650mm, the footprint is very small, and it is light and flexible.

[0030] Regarding the color-changing cation exchange resin, the utility model adopts the CJ-2 color-changing cation exchange resin of Xi'an Thermal Engineering Research Institute, which can be applied to all hydrogen conductivity measurements in power plants and has been successfully applied in more than 100 power plants across the country. The CJ-2 color-changing cation exchange resin is adopted because it is blue-gray in hydrogen form and turns pink when it fails, and the color change interface is obvious. The operator can easily determine whether the capacity of the exchange column is full through visual observation, and can regenerate it in time, avoiding blind replacement of the resin, and also ensuring the reliability and effectiveness of hydrogen conductivity monitoring, preventing ammonium ions from leaking and causing erroneous information.

[0031] The working process of the utility model is as follows:

[0032] Adding failed resin: After making sure that all connecting valves of the exchange column 1 are in the closed state, manually add the resin to be regenerated into the exchange column 1 through the solvent box 2;

[0033] Regeneration of failed resin: Pour the prepared 3-5% HCl regeneration solution into the dissolution tank 2, open the flow regulating valve 14 to control the flow of the regeneration solution, and discharge the regeneration solution into the waste liquid collection tank 4 until the regeneration solution basically stops flowing, which takes about 40 minutes;

[0034] Water flushing: When the regeneration liquid is basically not flowing, add deionized water into the solvent tank 2. The deionized water will maintain the original flow rate and flow out slowly and automatically through the exchange column 1 through the waste liquid outlet pipe 7. It takes about 40 minutes to flow out. In this way, clean it again. After regeneration is completed, open the waste liquid discharge valve 13 on the waste liquid discharge pipe 11 to discharge the waste liquid;

[0035] Regenerated resin transfer: After flushing, close the flow regulating valve 14, connect one end of the backwash water pipe 17 to the demineralized water source through a hose, open the resin discharge valve 8 on the resin delivery pipe 9 and the backwash valve 15 on the backwash water pipe 17 in turn, and discharge the regenerated resin into the resin collection box 3 through the resin delivery pipe 9 and the resin discharge valve 8.

[0036] Resin is exported for standby use: the drain valve 12 on the resin discharge pipe 10 at the bottom of the resin collection box 3 is opened to export the regenerated resin for standby use.

[0037] The maximum acid consumption of a single regeneration of the utility model device is 35L (calculated as 5% HCl), and the maximum flushing water volume of a single regeneration is 70L. The utility model device realizes the functions of loading, backwashing, regeneration, flushing, and transfer of resin in an exchange column through gravity and siphon action, and effectively achieves the effect of dynamic regeneration.

[0038] The above are only examples of specific applications of the utility model and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement of the utility model is within the protection scope of the utility model.

Claims

1. A mobile color-changing cation exchange resin dynamic regeneration device, comprising an exchange column (1), a drug dissolving box (2), a resin collecting box (3), a waste liquid collecting box (4), a flow meter (6) and a carrying vehicle (20), characterized in that: The bottom of the exchange column (1) is provided with a lower filter screen (5), the exchange column (1) is provided with a scale line (18), the upper part of the exchange column (1) is connected to the dissolving medicine box (2), the lower part of the exchange column (1) is connected to the resin delivery pipe (9), the lower filter screen (5) is connected to the waste liquid outlet pipe (7), the waste liquid outlet pipe (7) is connected to the backwash water pipe (17) via a three-way pipe opening (16), the top of the resin collection box (3) is connected to the bottom of the exchange column (1) via the resin delivery pipe (9), and the resin collection The bottom of the box (3) is connected to the fat drain pipe (10), the waste liquid collection box (4) is connected to the bottom of the lower filter (5) through the waste liquid outlet pipe (7), the bottom of the waste liquid collection box (4) is connected to the waste liquid discharge pipe (11), the flow meter (6) is arranged in the middle of the waste liquid outlet pipe (7) and a flow regulating valve (14) is arranged in front of it, and the movable color-changing cation exchange resin dynamic regeneration device is centrally arranged on a carrier vehicle (20), and wheels (21) with a self-locking function are arranged below the bottom of the carrier vehicle (20).

2. A movable color-changing cation exchange resin dynamic regeneration device according to claim 1, characterized in that: The resin delivery pipe (9) is then connected to the resin collection box (3) via a resin discharge valve (8).

3. A movable color-changing cation exchange resin dynamic regeneration device according to claim 1, characterized in that: The lower part of the lower filter screen (5) is connected to the waste liquid outlet pipe (7), and the waste liquid outlet pipe (7) is further connected to the waste liquid collection box (4) through a flow regulating valve (14) and a flow meter (6).

4. A movable color-changing cation exchange resin dynamic regeneration device according to claim 1, characterized in that: One end of the backwash water pipe (17) is connected to the waste liquid outlet pipe (7) via a three-way pipe opening (16); a backwash valve (15) is provided on the backwash water pipe (17); and the other end of the backwash water pipe (17) is connected to a flushing water source via a hose.

5. A movable color-changing cation exchange resin dynamic regeneration device according to claim 1, characterized in that: The upper end cover (19) of the drug dissolving box (2) is detachable.

6. A movable color-changing cation exchange resin dynamic regeneration device according to claim 1, characterized in that: A flow regulating valve (14) is provided in front of the flow meter (6).

7. A movable color-changing cation exchange resin dynamic regeneration device according to claim 1, characterized in that: The bottom of the resin collection box (3) is funnel-shaped, and the bottom of the resin collection box (3) is connected to a resin discharge pipe (10), and a grease drain valve (12) is provided on the resin discharge pipe (10).

8. A movable color-changing cation exchange resin dynamic regeneration device according to claim 1, characterized in that: The bottom of the waste liquid collection box (4) is connected to a waste liquid discharge pipe (11), and a waste liquid discharge valve (13) is provided on the waste liquid discharge pipe (11).

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