Full-automatic resin regeneration device and use method

Abstract

The invention discloses a full-automatic resin regeneration device and a use method, and belongs to the field of resin regeneration, the full-automatic resin regeneration device comprises a second regeneration liquid storage tank, the second regeneration liquid storage tank is connected with an instrument resin exchange column group through a regeneration control group, and a plurality of resin exchange columns are provided with color sensors; the instrument resin exchange column group is connected with a flushing liquid supply system through a conventional flushing electric valve group and a backwashing electric valve group; a cleaning device and a regeneration device are combined into a whole, the occupied area of equipment is reduced, the cleaning and regeneration functions are achieved at the same time, and inconvenience and space waste caused by separation of a traditional device are avoided; the full-automatic regeneration process is adopted, switches of all valves and pumps are accurately controlled, quantitative control over the regeneration process is achieved, dependence on experience of operators is reduced, stability and consistency of the regeneration effect are improved, and the problems that quantitative control cannot be achieved through manual operation, labor intensity is large, resin is prone to being damaged, impurities are introduced and the like are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of resin regeneration, and in particular relates to a fully automatic resin regeneration device and a use method thereof. Background Art

[0002] In the water treatment industry, conductivity monitoring is very important. Ion exchange columns with resin are often used to convert water cations into hydrogen forms to improve conductivity and enhance monitoring sensitivity. When the resin in the ion exchange column in front of the online cation conductivity meter fails, regeneration is required.

[0003] The traditional resin regeneration method is to first collect the spent resin in a large plastic barrel, add industrial hydrochloric acid to soak it after reaching a certain amount, and stir it regularly to ensure that the acid and resin are fully in contact, and finally rinse it with deionized water. This soaking method limits the resin regeneration capacity, which is only 60% theoretically, and the acid regeneration liquid needs to be replaced regularly to improve the regeneration degree.

[0004] The commonly used traditional instrument resin regeneration and cleaning device is composed of a resin regeneration device and a resin cleaning device. The regeneration steps include: the operator regularly collects the failed instrument resin exchange column, and pours the resin into the regeneration tank to a certain volume before regeneration; then opens the backwash water valve of the desalted water distribution system, and fills the regeneration tank with water to about 200mm above the resin layer; adjusts the backwash water valve to backwash the resin; opens the drain valve to adjust the liquid level to about 100mm above the resin layer; opens the acid inlet valve to add an appropriate amount of acid solution for stirring and soaking, and the amount of acid inlet is determined according to the volume of the failed resin; backwashes again to remove the residual acid solution; washes forward until the outlet water conductivity is less than 0.2μs / cm; manually loads the cleaned resin in the regeneration tank into the exchange column; connects the exchange column to the cleaning device through a quick connector; cleans until the outlet water conductivity is less than 0.1μs / cm; finally removes it for use, and then manually loads it into the ion exchanger for use.

[0005] However, the traditional device and method have many defects: first, it requires a lot of manpower and relies on the experience of the operator, and cannot be quantitatively controlled, resulting in different levels of resin regeneration, poor use effect, and safety hazards; second, manual operation is prone to contact with acid, and the volatilization of hydrochloric acid will endanger the health of personnel and corrode nearby equipment; third, the regeneration and cleaning devices are separated, occupying a large area; fourth, a certain amount of resin needs to be gathered for centralized regeneration, which has a long cycle and each batch takes more than 4 hours; sixth, manual control of the liquid level can easily affect the regeneration effect, and the complex operation can easily damage the resin and introduce impurities. Summary of the invention

[0006] The purpose of the present invention is to provide a fully automatic resin regeneration device and a method of use, so as to solve the problems that traditional resin regeneration devices and methods have many defects, such as strong dependence on manpower, high safety risks, large equipment footprint, long regeneration cycle, difficult liquid level control, easy damage to resin and easy introduction of impurities, which seriously affect the resin regeneration effect and efficiency.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic resin regeneration device, comprising a second regeneration liquid storage tank, the second regeneration liquid storage tank is connected to an instrument resin exchange column group through a regeneration control group, a plurality of the resin exchange columns are provided with color sensors, the instrument resin exchange column group is connected to a flushing liquid water supply system through a forward wash electric valve group and a backwash electric valve group, the forward wash electric valve group comprises a thirty-fourth electric valve and a water inlet electric valve group, the water inlet electric valve group is arranged between the second regeneration liquid storage tank and the flushing liquid water supply system, the water inlet electric valve group, the acid inlet control group, the circulation adjustment group, the regeneration control group, the forward wash electric valve group, the backwash electric valve group and the instrument resin exchange column group are all controlled to start and stop by a PLC control unit.

[0008] Furthermore, one side of the second regeneration liquid storage tank is connected to the flushing liquid acid supply system through an acid inlet electric valve group, and the acid inlet electric valve group includes a first interpolation pump and a twelfth electric valve.

[0009] Furthermore, the instrument resin exchange column group includes multiple resin exchange columns arranged in parallel, electric valves are respectively provided at both ends of the multiple resin exchange columns, and the multiple resin exchange columns are all connected to a flow meter and share a thirty-first pH meter connected to the eleventh waste liquid collection device.

[0010] Furthermore, a circulation regulating group is provided between the water inlet electric valve group and the regeneration control group, and the circulation regulating group includes a fourth PH meter and a fifteenth electric valve.

[0011] Furthermore, the regeneration control group includes a third regeneration liquid delivery pump, a sixteenth electric valve and a twenty-eighth electric valve.

[0012] Furthermore, the water inlet electric valve group includes a thirteenth electric valve and a fourteenth electric valve.

[0013] Furthermore, the backwash electric valve group includes a twenty-ninth electric valve.

[0014] A method for using a fully automatic resin regeneration device comprises the following steps:

[0015] Step 1: Device startup and parameter setting;

[0016] Step 2: Resin exchange column installation and testing;

[0017] Step 3: Backwash process control;

[0018] Step 4: Liquid inlet regeneration control;

[0019] Step 5: Backwash and forward wash control again;

[0020] Step 6: Stop the device and dispose of waste liquid.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The fully automatic resin regeneration device reduces the equipment footprint by integrating the cleaning and regeneration devices into one, while satisfying the cleaning and regeneration functions, thus avoiding the inconvenience and space waste caused by the separation of traditional devices. It adopts a fully automated regeneration process and accurately controls the switching of each valve and pump, thus realizing quantitative control of the regeneration process, reducing dependence on operator experience, improving the stability and consistency of the regeneration effect, and solving the problems of manual operation that cannot be quantitatively controlled, high labor intensity, easy damage to the resin, and introduction of impurities.

[0023] This fully automatic resin regeneration device can flexibly select single or multiple columns for regeneration according to the number of regenerated columns; at the same time, it can judge the state of the resin column through the data of the color sensor and the pH meter, and provide real-time feedback of the resin data to determine whether the resin is cleaned. It can accurately judge the regeneration progress of the resin column, avoid excessive or insufficient regeneration, effectively ensure the consistency and reliability of the regeneration effect, and improve the resin regeneration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of a fully automatic resin regeneration device;

[0025] Figure 2 It is a control schematic diagram for connecting the control unit;

[0026] Figure 3 for Figure 1 Schematic diagram of backwashing;

[0027] Figure 4 for Figure 1 Schematic diagram of resin regeneration;

[0028] Figure 5 for Figure 1 Schematic diagram of Zhongzheng washing.

[0029] In the figure: 1, the first insertion pump; 2, the second regeneration liquid storage tank; 3, the third regeneration liquid delivery pump; 4, the fourth PH meter; 5, the fifth resin exchange column; 6, the sixth resin exchange column; 7, the seventh resin exchange column; 8, the eighth flow meter; 9, the ninth flow meter; 10, the tenth flow meter; 11, the eleventh waste liquid collection device; 12, the twelfth electric valve; 13, the thirteenth electric valve; 14, the fourteenth electric valve; 15, the fifteenth electric valve; 16, the sixteenth electric valve; 17, the seventeenth electric valve; 18, the eighteenth electric valve 1. Electric valve; 2. 19th electric valve; 3. 20th electric valve; 4. 21st electric valve; 5. 22nd electric valve; 6. 23rd electric valve; 7. 24th electric valve; 8. 25th electric valve; 9. 26th electric valve; 10. 27th electric valve; 11. 28th electric valve; 12. 29th electric valve; 13. 29th electric valve; 14. 20th electric valve; 15. 21st electric valve; 16. 22nd electric valve; 17. 23rd electric valve; 18. 24th electric valve; 19. 30th electric valve; 21. 31st PH meter; 22. 32nd color sensor; 33. 33rd color sensor. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the embodiments.

[0031] The following examples are used to illustrate the present invention, but they cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions. Simple improvements to the method of the present invention under the premise of the concept of the present invention belong to the scope of protection claimed in the present invention.

[0032] See also Figure 1-5 The present invention provides a fully automatic resin regeneration device, including a second regeneration liquid storage tank 2, one side of which is connected to a flushing liquid acid supply system through an acid inlet electric valve group, and the acid inlet electric valve group includes a first plug-in pump 1 and a twelfth electric valve 12.

[0033] The second regeneration liquid storage tank 2 is connected to the instrument resin exchange column group through a regeneration control group, and the regeneration control group includes a third regeneration liquid delivery pump 3, a sixteenth electric valve 16 and a twenty-eighth electric valve 28.

[0034] The instrument resin exchange column group includes a plurality of resin exchange columns arranged in parallel, electric valves are respectively arranged at both ends of the plurality of resin exchange columns, the plurality of resin exchange columns are all connected to a flow meter and share a thirty-first pH meter 31 connected to an eleventh waste liquid collection device 11; color sensors are arranged on the plurality of resin exchange columns.

[0035] The instrument resin exchange column group is connected to the flushing liquid water supply system through a forward wash electric valve group and a back wash electric valve group. The forward wash electric valve group includes a thirty-fourth electric valve 34 and an inlet electric valve group. The inlet electric valve group is arranged between the second regeneration liquid storage tank 2 and the flushing liquid water supply system. The inlet electric valve group includes a thirteenth electric valve 13 and a fourteenth electric valve 14; the back wash electric valve group includes a twenty-ninth electric valve 29.

[0036] A circulation regulating group is arranged between the water inlet electric valve group and the regeneration control group, and the circulation regulating group includes a fourth PH meter 4 and a fifteenth electric valve 15 .

[0037] The water inlet electric valve group, acid inlet control group, circulation adjustment group, regeneration control group, forward wash electric valve group, backwash electric valve group and instrument resin exchange column group are all controlled to start and stop by a PLC control unit.

[0038] The operation process of the fully automatic resin regeneration device is as follows: Taking the regeneration of the fifth resin exchange column 5 as an example, the regeneration principle of the Nth resin exchange column is the same as the regeneration principle of the fifth resin exchange column 5:

[0039] Step 1: Device startup and parameter setting

[0040] See also Figure 1 , Figure 3 and Figure 5 , start the device, and the operator sets the parameters on the display screen of the integrated system, including the parameter settings of the insertion pump 1, the twelfth electric valve 12, the thirteenth electric valve 13 and the fourteenth electric valve 14. These parameters will be used to prepare the regeneration liquid with the required concentration.

[0041] The PLC control system reads the parameters entered by the operator and prepares the subsequent control program based on these parameters, making preparations for the automated control of the entire resin regeneration process.

[0042] Regeneration liquid preparation process: Regeneration liquid with different concentration ratios can be achieved by controlling the opening and closing of the first plug pump 1, the twelfth electric valve 12, the thirteenth electric valve 13 and the fourteenth electric valve 14. The volume of the second regeneration liquid storage tank 2 is about 400L, which is about one third of the volume of the entire integrated device. According to the actual needs of resin cleaning and regeneration, prepare the regeneration liquid of the required concentration, close the first insert pump 1 and the twelfth electric valve 12, open the thirteenth electric valve 13 and the fourteenth electric valve 14, inject 300L of flushing water, close and open the thirteenth electric valve 13 and the fourteenth electric valve 14 after the flushing water is injected, open the first insert pump 1 and the twelfth electric valve 12, set the acid injection time according to the required concentration of the regeneration liquid, so that the regeneration liquid of the required concentration is prepared, the fourth pH meter 4 and the fourteenth electric valve 14 are connected to the internal circulation loop, and the pH of the regeneration liquid can be monitored and controlled in real time through the PLC control system. The volume of the regeneration liquid required for the regeneration of different number of resin exchange columns is different, and the volume of the regeneration liquid can be generated through the PLC control program. During regeneration, the resin exchange column to be regenerated can be selected according to the PLC control program to achieve selective cleaning and regeneration. The above operations are all integrated and controlled through the PLC module.

[0043] Step 2: Resin exchange column installation and inspection

[0044] The resin exchange column for the failure tester is fixed to the integrated device through the clips at both ends, and the installation action triggers the emission of an electrical signal.

[0045] The PLC control system receives electrical signals to confirm whether the resin exchange columns are installed in place. It also detects and identifies the number and connection status of the resin exchange columns, providing basic information for subsequent precise control and operation.

[0046] Step 3: Backwash process control

[0047] See also Figure 1 and Figure 3 The PLC control system opens the twenty-ninth electric valve 29, the twenty-fifth electric valve 25, the nineteenth electric valve 19, and the twenty-fourth electric valve 24 according to a preset program, and closes other irrelevant valves to establish a flow channel for backwash water.

[0048] The flow rate and backwash time of the backwash water are controlled to ensure that the backwash operation is performed according to the set requirements. The backwash water will be discharged into the eleventh waste liquid collection device 11 through the waste water pipe.

[0049] During the backwashing process, the backwashing parameters are monitored in real time to ensure that the backwashing effect meets expectations and create good conditions for subsequent resin regeneration.

[0050] Step 4: Liquid inlet regeneration control

[0051] See also Figure 1 and Figure 4 The PLC control system accurately controls the opening of the sixteenth electric valve 16, the twenty-eighth electric valve 28, the twenty-fifth electric valve 25, the nineteenth electric valve 19, the twenty-fourth electric valve 24 and the third regeneration liquid delivery pump 3, and closes other valves to achieve accurate delivery of the regeneration liquid.

[0052] The regeneration liquid is transported to the fifth resin exchange column 5 at a set flow rate to perform a resin regeneration operation.

[0053] By using the fourth pH meter 4 and the fifteenth electric valve 15 connected to the regeneration liquid internal circulation loop, the pH value of the regeneration liquid can be circulated and adjusted. At the same time, the regeneration liquid is mixed evenly through the internal circulation to ensure that the pH value of the regeneration liquid is within an appropriate range during the regeneration process.

[0054] According to the information fed back by the thirty-third color sensor 33 and the thirty-first pH meter 31 in front of the eleventh waste liquid collection device 11, it is determined whether the resin cleaning is complete. Generally speaking, when the resin begins to regenerate, the color may be darker due to the adsorption of a large amount of impurities. As the regeneration process progresses, the impurities are gradually removed and the color becomes lighter. The thirty-third color sensor 33 can set an initial color threshold. When the resin color becomes lighter below this threshold, it means that the regeneration process is in progress; and when the color further becomes lighter to another lighter threshold, and the thirty-first pH meter 31 in front of the eleventh waste liquid collection device 11 shows that the pH value reaches a certain range, the PLC control system can determine that the resin cleaning is complete.

[0055] Step 5: Backwash and forward wash control again

[0056] See also Figure 1 and Figure 3 ,In the backwashing stage again, the PLC control system repeats the valve operation in the third step to backwash the resin exchange column for the second time to further remove impurities.

[0057] See also Figure 1 and Figure 5 , entering the positive washing stage, the PLC control system opens the thirty-fourth electric valve 34, the eighteenth electric valve 18, the twenty-fifth electric valve 25 and the thirtieth electric valve 30, closes other valves, and performs positive washing operations on the resin exchange column; during the positive washing stage, the thirteenth electric valve 13, the fourteenth electric valve 14 and the seventeenth electric valve 17 are opened at the same time to perform positive washing on the second regeneration liquid storage tank 2.

[0058] The flow rate and time of flushing water are controlled, and the resin is continuously flushed until the conductivity of the outlet water is less than 0.1 μs / cm, and the color of the fifth resin exchange column 5 changes from dark brown to brown, and the color change information of the resin exchange column is fed back to the PLC control terminal through the thirty-third color sensor 33. During the positive washing process, as the flushing proceeds, the color of the resin should gradually return to its original color state, and the thirty-third color sensor 33 will continue to monitor the change of the resin color. When the color reaches a preset standard value (close to the original color of the resin), it means that the resin has been rinsed clean, and the resin regeneration is confirmed to be completed.

[0059] Step 6: Device shutdown and waste liquid treatment

[0060] When the resin regeneration is completed, the PLC control system closes all valves to prevent unnecessary loss of regeneration liquid and flushing water.

[0061] A reminder is issued to the operator to remove the resin exchange column that has completed regeneration.

[0062] The waste liquid is discharged to the eleventh waste liquid collection device 11, completing a complete resin regeneration operation cycle.

[0063] The system enters standby mode and waits for the next operation instruction. During the standby process, the PLC control system continuously monitors the equipment status to ensure the safety and stability of the equipment.

[0064] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the embodiments of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description, and these obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A fully automatic resin regeneration device, characterized in that: The invention comprises a second regeneration liquid storage tank (2), the second regeneration liquid storage tank (2) is connected to an instrument resin exchange column group through a regeneration control group, a plurality of the resin exchange columns are provided with color sensors, the instrument resin exchange column group is connected to a flushing liquid water supply system through a forward wash electric valve group and a back wash electric valve group, the forward wash electric valve group comprises a thirty-fourth electric valve (34) and a water inlet electric valve group, the water inlet electric valve group is arranged between the second regeneration liquid storage tank (2) and the flushing liquid water supply system, and the water inlet electric valve group, the acid inlet control group, the circulation adjustment group, the regeneration control group, the forward wash electric valve group, the back wash electric valve group and the instrument resin exchange column group are all controlled to start and stop by a PLC control unit.

2. A fully automatic resin regeneration device according to claim 1, characterized in that: One side of the second regeneration liquid storage tank (2) is connected to the flushing liquid acid supply system via an acid inlet electric valve group, and the acid inlet electric valve group comprises a first displacement pump (1) and a twelfth electric valve (12).

3. A fully automatic resin regeneration device according to claim 1, characterized in that: The instrument resin exchange column group comprises a plurality of resin exchange columns arranged in parallel, electric valves are respectively arranged at both ends of the plurality of resin exchange columns, the plurality of resin exchange columns are all connected to a flow meter and share a thirty-first pH meter (31) connected to an eleventh waste liquid collection device (11).

4. A fully automatic resin regeneration device according to claim 1, characterized in that: A circulation regulating group is arranged between the water inlet electric valve group and the regeneration control group, and the circulation regulating group comprises a fourth PH meter (4) and a fifteenth electric valve (15).

5. A fully automatic resin regeneration device according to claim 1, characterized in that: The regeneration control group comprises a third regeneration liquid delivery pump (3), a sixteenth electric valve (16) and a twenty-eighth electric valve (28).

6. A fully automatic resin regeneration device according to claim 1, characterized in that: The water inlet electric valve group comprises a thirteenth electric valve (13) and a fourteenth electric valve (14).

7. A fully automatic resin regeneration device according to claim 1, characterized in that: The backwash electric valve group includes a twenty-ninth electric valve (29).

8. The method for using the fully automatic resin regeneration device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Device startup and parameter setting; Step 2: Resin exchange column installation and testing; Step 3: Backwash process control; Step 4: Liquid inlet regeneration control; Step 5: Backwash and forward wash control again; Step 6: Stop the device and dispose of waste liquid.

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