Extracorporeal upflow regeneration process for ion exchange resin

A technology of ion exchange resin and countercurrent regeneration, which is applied in the direction of ion exchange regeneration, ion exchange, ion exchange water/sewage treatment, etc., can solve the problems of low water saving rate, high consumption of regeneration liquid, and non-continuous water production, and achieve saving Energy consumption and time, improvement of utilization rate, effect of ensuring water quality

Active Publication Date: 2014-08-27
CHENGDU GRACE FIBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still the following disadvantages: continuous water production is not possible, and multiple units need to be invested to exchange water production, the water saving rate is still low, and the consumption of regeneration fluid is high

Method used

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  • Extracorporeal upflow regeneration process for ion exchange resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The extracorporeal countercurrent regeneration process of ion exchange resin is characterized in that: carry out according to the following steps:

[0036] A While producing soft water, the spent resin is continuously discharged from the lower part of the ion exchanger;

[0037] B The expired resin is transported into the collection tank by spraying, the delivery liquid is discharged from the upper part of the collection tank, and the expired resin is discharged from the bottom of the collection tank and enters the regeneration tank;

[0038] C The regeneration liquid is passed into the lower part of the regeneration tank, and the invalid resin is regenerated in countercurrent, and the regenerated resin is discharged from the bottom of the regeneration tank and enters the cleaning tank;

[0039] D Water is fed from the bottom of the cleaning tank, and the residual regeneration liquid on the regenerated resin is reversely cleaned. The cleaned regenerated resin is dischar...

Embodiment 2

[0041] The extracorporeal countercurrent regeneration process of ion exchange resin is characterized in that: carry out according to the following steps:

[0042] A While producing soft water, the spent resin is continuously discharged from the lower part of the ion exchanger;

[0043] B The expired resin is transported into the collection tank by spraying, the delivery liquid is discharged from the upper part of the collection tank, and the expired resin is discharged from the bottom of the collection tank and enters the regeneration tank;

[0044] C The regeneration liquid is passed into the lower part of the regeneration tank, and the invalid resin is regenerated in countercurrent, and the regenerated resin is discharged from the bottom of the regeneration tank and enters the cleaning tank;

[0045] D Water is fed from the bottom of the cleaning tank, and the residual regeneration liquid on the regenerated resin is reversely cleaned. The cleaned regenerated resin is dischar...

Embodiment 3

[0050] The extracorporeal countercurrent regeneration process of ion exchange resin is characterized in that: carry out according to the following steps:

[0051] A While producing soft water, the spent resin is continuously discharged from the lower part of the ion exchanger;

[0052] B The expired resin is transported into the collection tank by spraying, the delivery liquid is discharged from the upper part of the collection tank, and the expired resin is discharged from the bottom of the collection tank and enters the regeneration tank;

[0053] C The regeneration liquid is passed into the lower part of the regeneration tank, and the invalid resin is regenerated in countercurrent, and the regenerated resin is discharged from the bottom of the regeneration tank and enters the cleaning tank;

[0054] D Water is fed from the bottom of the cleaning tank, and the residual regeneration liquid on the regenerated resin is reversely cleaned. The cleaned regenerated resin is dischar...

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PUM

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Abstract

The invention provides an extracorporeal upflow regeneration process for ion exchange resin. The process includes the following steps that firstly, soft water is produced, and meanwhile exhausted resin is continuously discharged from the lower portion of an ion exchanger; secondly, the exhausted resin is conveyed to a gathering tank through injection, conveying fluid is drained from the upper portion of the gathering tank, and the exhausted resin is discharged from the bottom of the gathering tank and enters a regeneration tank; thirdly, regeneration fluid flows into the lower portion of the regeneration tank, upflow regeneration is conducted on the exhausted resin, and regenerated resin is discharged from the bottom of the regeneration tank and enters a cleaning tank; fourthly, water flows into the lower portion of the cleaning tank, the regeneration fluid left on the regenerated resin is reversely cleaned away, and the cleaned regenerated resin is discharged from the bottom of the cleaning tank and is conveyed back to the ion exchanger through injection. According to the process, the soft water can be continuously produced, energy consumption is reduced, and the equipment utilization rate is increased.

Description

technical field [0001] The invention belongs to the field of soft water industrial water, and in particular relates to an in vitro countercurrent regeneration process of ion exchange resins. Background technique [0002] In the water treatment of the prior art, a sodium ion exchange resin of a certain height is generally installed in the sodium ion exchanger as an exchange agent. The raw water passes through the exchanger (downstream or countercurrent), and the sodium ions on the exchanger replace the calcium and magnesium ions in the raw water, softening the water. [0003] Ca 2+ +2NaR → CaR+2Na + [0004] Mg 2+ +2NaR → MgR+2Na + [0005] The sodium ions on the exchanger are gradually replaced by calcium and magnesium ions. After a period of use, calcium and magnesium ions will leak out. When the hardness of the water reaches the specified value, it will stop running and start regeneration. During regeneration, 5-8% brine is passed through the exchange medium layer. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42B01J49/00B01J49/60B01J49/75
Inventor 冷衍辉况波
Owner CHENGDU GRACE FIBER
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