Who has the diagram of the regeneration steps for the resin tower?
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This post was last edited by sunjl1981 on 2013-1-6 at 22:41. We are dealing with tanks in chlorine processing plants; those who have information on the regeneration process for resin towers would be helpful. It would be great if the sequence of valves could also be specified. Thank you everyone. ， ， -
Serial Number Step Name Time Flow Rate Remarks 1 Start 0 2 First wash 1.5 hr 2.4 L/h Deionized water 3 Backwash with pure water 0.5 hr 6000 L/h Deionized water 4 Acid regeneration 1.5 hr 31% HCl: 400 L/h; H2O: 1600 L/h 5 Second wash 3 hr 2400 L/h Deionized water 6 Alkali regeneration 1.5 hr 30% NaOH: 360 L/h; H2O: 2400 L/h 7 Third wash 2.5 hr 2400 L/h Deionized water 8 Saltwater displacement 1.5 hr 4000 L/h Filtered saltwater For reference only
Reply to 2# Cloud Wanderer: I know this procedure. Do you have another regeneration procedure as well, friend?
(1) Step transition
(2) Drainage 1 – Discharge: Time <15 minutes; Flow rate <30 m³/hour. Valves to be opened: XV-1503A/B/C, XV-1512A/B/C, XV-1518, XV-1513, XV-1515.
(3) Backwash 1: Time: 10 minutes; Flow rate: 17 m³/hour. Valves to be opened: XV-1502A/B/C, XV-1508A/B/C, XV-1517. Flow regulation: XV-1502A/B/C.
(4) Sparging 1: Time: 3 minutes; Flow rate: 30 m³/hour. Valves to be opened: XV-1504A/B/C, XV-1506A/B/C, XV-1517. Flow regulation: XV-1504A/B/C.
(5) Settling 1: Time: 10 minutes. Valves to be opened: XV-1506A/B/C, XV-1517.
(6) Washing: Time: 60 minutes; Flow rate: 9.9 m³/hour. Valves to be opened: XV-1507A/B/C, XV-1512A/B/C, XV-1517. Flow regulation: Manual valve at the inlet of the HCl injector.
(7) Backwash 2: Time: 30 minutes; Flow rate: 17 m³/hour. Valves to be opened: XV-1502A/B/C, XV-1506A/B/C, XV-1517. Flow regulation: XV-1502A/B/C.
(8) Settling 2: Time: 10 minutes. Valve to be opened: XV-1517.
(9) HCl regeneration: Time: 60 minutes; Flow rate: 11.2 m³/hour. Valves to be opened: XV-1507A/B/C, XV-1512A/B/C, XV-1514, XV-1517.
(10) HCl discharge: Time: 40 minutes; Flow rate: 9.9 m³/hour. Valves to be opened: XV-1507A/B/C, XV-1512A/B/C, XV-1517. Flow regulation: Manual valve at the outlet of the HCl injector.
(11) Drainage 2: Time <15 minutes; Flow rate <100 m³/hour. Valves to be opened: XV-1503A/B/C, XV-1512A/B/C, XV-1517. Flow regulation: XV-1503A/B/C.
(12) NaOH feed: Time: 20 minutes; Flow rate: 13.9 m³/hour. Valves to be opened: XV-1508A/B/C, XV-1509A/B/C, XV-1516, XV-1517.
(13) Water washing: Time: 10 minutes; Flow rate: 12.3 m³/hour. Valves to be opened: XV-1508A/B/C, XV-1509A/B/C, XV-1517. Flow regulation: Manual valve at the inlet of the NaOH injector.
(14) Sparging 2: Time: 10 minutes; Flow rate: 30 m³/hour. Valves to be opened: XV-1504A/B/C, XV-1506A/B/C, XV-1517. Flow regulation: XV-1504A/B/C.
(15) Settling 3: Time: 10 minutes. Valves to be opened: XV-1506A/B/C.
(16) NaOH discharge: Time: 40 minutes; Flow rate: 11.2 m³/hour. Valves to be opened: XV-1510A/B/C, XV-1512A/B/C, XV-1517. Flow regulation: Manual valve at the inlet of FG-1505.
(17) Sparging 3: Time: 3 minutes; Flow rate: 30 m³/hour. Valves to be opened: XV-1504A/B/C, XV-1506A/B/C, XV-1517. Flow regulation: XV-1504A/B/C.
(18) Settling 4: Time: 10 minutes. Valves to be opened: XV-1506A/B/C, XV-1518.
(19) Feed preparation – For reference only
(2) Drainage 1 – Discharge: Time <15 minutes; Flow rate <30 m³/hour. Valves to be opened: XV-1503A/B/C, XV-1512A/B/C, XV-1518, XV-1513, XV-1515.
(3) Backwash 1: Time: 10 minutes; Flow rate: 17 m³/hour. Valves to be opened: XV-1502A/B/C, XV-1508A/B/C, XV-1517. Flow regulation: XV-1502A/B/C.
(4) Sparging 1: Time: 3 minutes; Flow rate: 30 m³/hour. Valves to be opened: XV-1504A/B/C, XV-1506A/B/C, XV-1517. Flow regulation: XV-1504A/B/C.
(5) Settling 1: Time: 10 minutes. Valves to be opened: XV-1506A/B/C, XV-1517.
(6) Washing: Time: 60 minutes; Flow rate: 9.9 m³/hour. Valves to be opened: XV-1507A/B/C, XV-1512A/B/C, XV-1517. Flow regulation: Manual valve at the inlet of the HCl injector.
(7) Backwash 2: Time: 30 minutes; Flow rate: 17 m³/hour. Valves to be opened: XV-1502A/B/C, XV-1506A/B/C, XV-1517. Flow regulation: XV-1502A/B/C.
(8) Settling 2: Time: 10 minutes. Valve to be opened: XV-1517.
(9) HCl regeneration: Time: 60 minutes; Flow rate: 11.2 m³/hour. Valves to be opened: XV-1507A/B/C, XV-1512A/B/C, XV-1514, XV-1517.
(10) HCl discharge: Time: 40 minutes; Flow rate: 9.9 m³/hour. Valves to be opened: XV-1507A/B/C, XV-1512A/B/C, XV-1517. Flow regulation: Manual valve at the outlet of the HCl injector.
(11) Drainage 2: Time <15 minutes; Flow rate <100 m³/hour. Valves to be opened: XV-1503A/B/C, XV-1512A/B/C, XV-1517. Flow regulation: XV-1503A/B/C.
(12) NaOH feed: Time: 20 minutes; Flow rate: 13.9 m³/hour. Valves to be opened: XV-1508A/B/C, XV-1509A/B/C, XV-1516, XV-1517.
(13) Water washing: Time: 10 minutes; Flow rate: 12.3 m³/hour. Valves to be opened: XV-1508A/B/C, XV-1509A/B/C, XV-1517. Flow regulation: Manual valve at the inlet of the NaOH injector.
(14) Sparging 2: Time: 10 minutes; Flow rate: 30 m³/hour. Valves to be opened: XV-1504A/B/C, XV-1506A/B/C, XV-1517. Flow regulation: XV-1504A/B/C.
(15) Settling 3: Time: 10 minutes. Valves to be opened: XV-1506A/B/C.
(16) NaOH discharge: Time: 40 minutes; Flow rate: 11.2 m³/hour. Valves to be opened: XV-1510A/B/C, XV-1512A/B/C, XV-1517. Flow regulation: Manual valve at the inlet of FG-1505.
(17) Sparging 3: Time: 3 minutes; Flow rate: 30 m³/hour. Valves to be opened: XV-1504A/B/C, XV-1506A/B/C, XV-1517. Flow regulation: XV-1504A/B/C.
(18) Settling 4: Time: 10 minutes. Valves to be opened: XV-1506A/B/C, XV-1518.
(19) Feed preparation – For reference only
Fault Cause Immediate Action Correction Method 1. Rapid increase in filter pressure difference. A. The quality of the brine used is poor. B. Insufficient main feed. C. Backwashing is not satisfactory. Switch the filter when the pressure difference exceeds 0.2 MPa. A. Process optimization and rectification of the brine production section to supply qualified brine. B. Adjust the main feed flow rate to the specified value. C. Carefully check the effect of the next backwashing. 2. The saltwater suspension content is too high after filtration. A. Poor pre-coating. B. The filter element is damaged or the filter element gasket is damaged. A. Switch filter. B. Increase the number of times S.S is analyzed. A. Carefully check the pre-coating effect next time. B. Perform an internal inspection of the filter. 3. The calcium and magnesium levels at the resin tower outlet are high. A. Poor regeneration quality. B. Resin caking. C. The resin layer is uneven. D. Insufficient resin amount. E. The valve does not close properly, allowing untreated filtered brine to mix in. F. The performance of resin deteriorates due to damage, oxidation, etc. A. Reduce the saline flow rate and check the calcium level every 2 hours. B. If calcium and magnesium levels remain above the limit, reduce the current to 5 KA for operation. A. Restart regeneration. B. For backwashing, it is necessary to ensure that the resin is fully expanded. C. Perform backwashing for 5–10 minutes to ensure that the unevenness of the resin is less than 10 cm. D. Top up the resin promptly. E. Inspect and replace all valve in the salt water pipelines. F. Inspect the appearance of the resin layer; if any abnormalities are found, replace the resin or take other measures. 4. High pressure difference in the resin column: A. Reduce the flow rate of salt water if necessary. A. Resin caking. B. α-cellulose and suspended solids leak into the saline solution. A. It is necessary to ensure that the resin expands fully during the next regeneration. B. Check the suspended solids level at the filter outlet and its operating condition; if necessary, stop the filter for an internal inspection. 5. The concentration of CH+ in the waste liquid from the ion exchange tower is low. A. Insufficient amount of HCl added. A. Change the operation mode to manual. B. Restart regeneration. A. Check the HCl concentration. B. Check the HCl flow rate. C. After regeneration, immediately put the tower online.
I found it online; it’s fine~ Just taking a quick look, that’s about it~ Hehe, the steps were already mentioned above. http://ca.nstl.gov.cn/stdAutomation/CollInfo/images/2006/5/29/54418.png