CN208667178U - Regeneration of ion-exchange resin device - Google Patents
Regeneration of ion-exchange resin device Download PDFInfo
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- CN208667178U CN208667178U CN201820786740.6U CN201820786740U CN208667178U CN 208667178 U CN208667178 U CN 208667178U CN 201820786740 U CN201820786740 U CN 201820786740U CN 208667178 U CN208667178 U CN 208667178U
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Abstract
The utility model provides a kind of regeneration of ion-exchange resin device, comprising: first interface, suitable for being connect with the input port of the ion exchange column comprising ion exchange resin；Regenerative agent pipeline connects the first interface；Second interface, suitable for being connect with the delivery outlet of the ion exchange column comprising ion exchange resin；Output pipe connects the second interface；PH sensor is set on the output pipe；Control valve is set on the output pipe；And controller, connect the pH sensor and the control valve, the controller current pH value and first threshold, and first control signal is exported according to comparison result, the first control signal is exported to the control valve.
Description
Technical field
The utility model relates generally to regeneration of ion-exchange resin technology more particularly to a kind of ion exchange resin again
Generating apparatus.
Background technique
Ion exchange is swapped by means of the ion in the ion and weak solution in Solid-state Ion-exchange agent, to reach
Extract or remove the purpose of certain ions in solution.
Ion-exchanger after prolonged use, loses the ability referred to as failure for continuing exchanged water intermediate ion.At this moment, need by
Ion-exchanger is regenerated.The regenerant solution fair current for often determining concentration with one or adverse current make to hand over by the exchange oxidant layer of failure
Agent is changed by regeneration reducing into prototype.
Typical Solid-state Ion-exchange agent is ion exchange resin.Ion exchange resin regeneration, which mostly uses greatly, at present fixes again
Raw agent dosage method, i.e., the fixed regenerative agent using with dose.It was found that this regeneration technology do not only result in regenerated acid and alkali consumption it is general
All over higher, and the pH value low qualified of the regeneration liquid waste ejected after regenerating, it needs acid adding or alkali to be neutralized, thus increases
Operating cost is added.Also, when recycling metal with ion exchange technique, if be not only recovered to fixed regenerant consumption method
Metallic solution concentration it is low, and obtained regenerative elution liquid pH value is low, makes troubles for subsequent be further processed.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of regeneration of ion-exchange resin side's devices, can control
The concentration of metal ion in regenerative elution liquid.
In order to solve the above technical problems, the utility model provides a kind of regeneration of ion-exchange resin device, comprising: the
One interface, suitable for being connect with the input port of the ion exchange column comprising ion exchange resin；Regenerative agent pipeline, connection described first
Interface；Second interface, suitable for being connect with the delivery outlet of the ion exchange column comprising ion exchange resin；Output pipe connects institute
State second interface；PH sensor is set on the output pipe；Control valve is set on the output pipe；And controller,
Connect the pH sensor and the control valve, the controller current pH value and first threshold, and according to comparing
As a result first control signal is exported, the first control signal is exported to the control valve.
In an embodiment of the utility model, above-mentioned regeneration of ion-exchange resin equipment further include: regenerative agent pump,
On the regenerative agent pipeline；Wherein the controller connects the regenerative agent pump, the controller current pH
Value and second threshold, and second control signal is exported according to comparison result, the second control signal is transmitted to the regenerative agent
Pump.
In an embodiment of the utility model, the controller includes first comparator, the first comparator it is defeated
Enter end and inputs the current pH value and first threshold, the output end output of the first comparator the first control letter respectively
Number.
In an embodiment of the utility model, the controller includes first comparator, the second comparator and/or door, institute
The input terminal for stating first comparator inputs the current pH value and first threshold, the input terminal difference of second comparator respectively
The current pH value and the second threshold are inputted, described or door input terminal is separately connected the output end of the first comparator
It is described wherein the output end of the first comparator exports the first control signal with the output end of second comparator
Or the output end of door exports the second control signal.
In an embodiment of the utility model, the control valve connection first branch and second branch, the control valve
Switch being connected to the output pipe and the first branch and being connected between the output pipe and the second branch；Its
Described in the first branch for collecting the regenerative elution liquid for metal recovery, the second branch is for collecting the regeneration
Eluent utilizes or discharges the regenerative elution liquid as regenerant recycle.
In an embodiment of the utility model, the control valve is triple valve.
In an embodiment of the utility model, the first branch is connected to the first storage container, the second branch
It is connected to the second storage container.
Compared with prior art, the utility model can change according to the pH value of regenerative elution liquid to judge what regeneration carried out
Degree determines how to utilize regenerative elution liquid accordingly to estimate the concentration of metal ion in regenerative elution liquid.This controlling party
Formula being excessively used to avoid regenerative agent.
Detailed description of the invention
Fig. 1 is the regeneration of ion-exchange resin schematic device of an embodiment of the present invention.
Fig. 2 is the control logic of the controller of an embodiment of the present invention.
Fig. 3 is the regeneration of ion-exchange resin flow chart of an embodiment of the present invention.
Fig. 4 is the regeneration of ion-exchange resin flow chart of another embodiment of the utility model.
Specific embodiment
It is practical to this below in conjunction with attached drawing for the above objects, features, and advantages of the utility model can be clearer and more comprehensible
Novel specific embodiment elaborates.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new
Type can also be implemented using other different from other way described herein, therefore the utility model is not by following public tool
The limitation of body embodiment.
As shown in the application and claims, unless context clearly prompts exceptional situation, " one ", "one", " one
The words such as kind " and/or "the" not refer in particular to odd number, may also comprise plural number.It is, in general, that term " includes " only prompts to wrap with "comprising"
Include clearly identify the step of and element, and these steps and element do not constitute one it is exclusive enumerate, equipment may also wrap
Containing the step of other or element.
The embodiments of the present invention describe in regeneration of ion-exchange resin device, especially regenerative process for regeneration
The control of metal concentration in eluent.
Regeneration of ion-exchange resin device
Fig. 1 is the regeneration of ion-exchange resin schematic device of an embodiment of the present invention.Refering to what is shown in Fig. 1, this
The regeneration of ion-exchange resin device 100 of embodiment, including first interface 101 and second interface 111.First interface 101 is suitable
It is connect in the input port of the ion exchange column 110 comprising ion exchange resin, second interface 111 is suitable for handing over comprising ion
The delivery outlet connection for changing the ion exchange column 110 of resin, thus accesses regenerating unit 100 for ion exchange column 110.Ion is handed over
The ion exchange resin changed in column 110 can be various types.It is appreciated that ion exchange column 110 can be one, it can also
To be multiple.Regenerative agent pipeline 102 connects first interface 101, hands over to introduce regenerative agent the ion in ion exchange column 110
Resin is changed to be regenerated.Regenerative agent pump 103 is set on regenerative agent pipeline 102.Regenerative agent pump 103 can connect regenerative agent source, such as
Regenerative agent slot 104.Output pipe 112 connects second interface, to export regenerative elution liquid.PH sensor 113 and control valve 115
On output pipe 112.PH sensor 113 can detecte the pH value of the regenerative elution liquid in output pipe 112.Control valve
The flow direction after regenerative elution liquid in 115 controllable output pipes 112.Control valve 115 can be a triple valve, have one
A input terminal and 2 output ends.2 output ends are separately connected the first branch and second branch.Control valve 115 can be exported in connection
Switch between pipeline 112 and the first branch, and connection output pipe 112 and the second branch.
Controller 114 connects pH sensor 113, regenerative agent pump 103 and control valve 115.Controller 114 can compare respectively
More current pH value and first threshold and second threshold, and first control signal S1 and second control signal are exported according to comparison result
S2.First control signal S1 is transmitted to control valve 115, and second control signal S2 is exported to regenerative agent pump 103.Here, the first threshold
Value is greater than second threshold.
In one embodiment, controller 114 can be set in the instrument box of device 100.
By first control signal S1, control valve 115 can be instructed to select the flow direction of regenerative elution liquid, thus after determining
How regenerative elution liquid is utilized.By second control signal S2, whether regenerative agent pump 103 can control to ion exchange column 110
Regenerative agent is provided, so as to control regenerated beginning and end.
In the present embodiment, the degree to judge regeneration progress can be changed according to the pH value of regenerative elution liquid, to estimate
The concentration for counting metal ion in regenerative elution liquid determines how using regenerative elution liquid and when to terminate to regenerate accordingly.It is this
Control mode being excessively used to avoid regenerative agent (such as acid).
Specifically, in practical applications, the ion exchange resin overwhelming majority is using continuous dynamic regeneration method, i.e., again
Raw agent fair current or adverse current pass through the cylinder of filling ion-exchange resin.Most common regeneration method, according to regenerative elution liquid at
The requirement divided, frequently with H2SO4Or HCl solution elutes the cation exchange resin of failure, and following exchange reaction occurs:
R-M+H+=R-H+M+
In formula: R-ion exchange resin group；H+- regenerative agent HCl or H2SO4；M-ion exchange resin absorption gold
Belong to ion；Switch to the ion exchange resin of H-type after R-H-regeneration.
Adsorbing metal ions and the ion exchange resin being saturated, into reproducer, regenerative agent (such as hydrochloric acid) can enter
Exchange column, fair current (or adverse current) are regenerated by resin layer by above-mentioned principle.Under the flow velocity of process stipulation, regenerative agent is several
It all is consumed in regeneration, and forms regeneration exchange band, regeneration is completed in the resin in exchange band, and leave exchange band is
The product of regenerative response --- metal ion.With regenerated continuation, regeneration exchange band elapses gradually downward, until having regenerated
At.Regenerative process can be divided into two stages:
First stage: during ion exchange resin regeneration, when just having started into regenerative agent, in resin bed exhausted resin compared with
More, exchange reaction is easy to carry out, and resin is easy to absorption and regeneration agent, the hydrogen ion (H+) in regenerative agent be completely used for exchange metal from
Son, not extra hydrogen ion outflow, therefore regenerative elution liquid pH value is higher, exchanges the metal ion to get off and continuously outflows ion
Exchange column, as more and more metal ions are exchanged, the concentration of metal ions in regenerative elution liquid is continuously improved.
Second stage: with the progress of regenerative process, more and more exhausted resins are regenerated, Resin Absorbent regenerative agent
Ability decline, the hydrogen ion in regenerative agent starts more than needed more and more, and extra hydrogen ion will be with regenerative elution liquid stream
Ion exchange column out, therefore the pH value of regenerative elution liquid gradually decreases.At this moment the concentration of metal ions in eluent reaches highest
After point, exchanging the metal ion to get off later is slowly reduced, and the concentration of metal ions in regenerative elution liquid constantly reduces, outflow
Regenerative elution liquid pH value constantly reduces.
In the embodiments of the present invention, the first threshold of pH value corresponds to the critical of concentration of metal ions in second stage
Point can be used for deciding whether the metal ion in reclaiming eluent.An embodiment according to the present utility model, regenerating unit
The course of work it is as follows:
First stage, during regeneration starts, the pH value of the regenerative elution liquid of output is higher (being greater than first threshold Th1), right
The concentration of metal ions answered is higher, can the regenerative elution liquid to the part recycle, control valve 115 can be by output pipe at this time
112 are connected to the first branch, and output regenerative elution liquid is conveyed to carry out metal recovery.For example, the first branch can be connected
It is connected to the first storage container (not shown), to be used for metal recovery later.For another example, the first branch can be connected to metal to return
Receiving unit (not shown), to be directly used in metal recovery.
Second stage, with regenerated progress, hydrogen ion starts to leak, and pH value constantly reduces, and concentration of metal ions with
Regenerated progress constantly accumulation reach peak, just reduce rapidly later, according to the concentration of metal ion, determine it is corresponding this
When pH value be first threshold Th1, the partial regeneration eluent can still be recycled.As pH < Th1, ion exchange resin
The regenerative elution liquid of middle outflow should not carry out metal ion recycling, but can collect the utilization in regeneration next time, Huo Zhezhi
It connects as discharge of wastewater.Output pipe 112 can be connected to by control valve 115 with second branch at this time, and output regenerative elution liquid is sent
It goes to be collected or discharge.For example, second branch can be connected to the second storage container (not shown), so as to later
For metal recovery.For another example, second branch can be connected to discharge of wastewater pipeline (not shown), it is useless to be discharged directly into
Water treatment system.
In one embodiment, in order to keep the regeneration of resin as abundant as possible, also as regenerative elution liquid pH < Th1 of outflow
The regular hour that is delayed is needed, until determining that regeneration is completed when pH drops to close to second threshold Th2.Here, second threshold
Th2 can be set with reference to the pH value of regenerative agent.Such as second threshold Th2 is set to the pH value of slightly above regenerative agent.It is regenerating
When carrying out, the exportable second control signal S2 of control valve 115 opens regenerative agent pump 103；And when judgement regeneration is completed,
The exportable second control signal S2 of control valve 115 makes regenerative agent pump close 103 closings.
Although description determines to regenerate terminal according to pH value in above-described embodiment, this is not intended as the limit of the utility model
System, other modes can be used to determine regeneration terminal in those skilled in the art, to determine when close regenerative agent pump 103.
Control logic shown in Fig. 2 can be used in controller 114 in above-described embodiment.In comparator 21, can will pass
The pH value of the regenerative elution liquid detected of sensor 113 is compared with first threshold Th1, when pH value is greater than or equal to first threshold Th1
When, comparator 21 exports high level, and high level may make control valve 115 to be connected to output pipe 112 with the first branch.It is high simultaneously
Level also may make or door 23 exports high level, and regenerative agent pump 103 is kept to open.When pH value is less than first threshold Th1, compare
Device 21 exports low level.Low level may make control valve 115 to be connected to output pipe 112 with second branch.It, can in comparator 22
With further by the pH value of the regenerative elution liquid detected of sensor 113 compared with second threshold Th2, when pH value is lower than the second threshold
When value Th2, comparator 22 also exports low level, and at this time or two input terminals of door 23 are all low level, so that regenerative agent pump 103
It closes.It is appreciated that control logic described herein and its level setting are example, those skilled in the art can be according to above
The control mode of description designs other control logics.
Regeneration of ion-exchange resin process
Fig. 3 is the regeneration of ion-exchange resin flow chart of an embodiment of the present invention.With reference to shown in Fig. 3, this example
Process may include following steps.
In step 301, the current pH value of regenerative elution liquid when ion exchange resin is regenerated is detected；
In step 302, more current pH value and first threshold；When pH value is greater than or equal to first threshold, enter step
303；When pH value is less than first threshold, 304 are entered step；
In step 303, collects regenerative elution liquid and be used for metal recovery；
In step 304, regenerative elution liquid is collected as regenerant recycle and utilizes or discharge regenerative elution liquid.
In one embodiment, collecting the step of regenerative elution liquid is used for metal recovery includes: to convey regenerative elution liquid
To the first storage container.
In another embodiment, collecting the step of regenerative elution liquid is used for metal recovery includes: that regenerative elution liquid is defeated
It is sent to metal recovery unit.
In one embodiment, collecting the step of regenerative elution liquid is utilized as regenerant recycle includes, by regenerative elution
Liquid is transported to the second storage container.
Fig. 4 is the regeneration of ion-exchange resin flow chart of another embodiment of the utility model.Refering to what is shown in Fig. 4, originally showing
The process of example may include following steps.
In step 401, the current pH value of regenerative elution liquid when ion exchange resin is regenerated is detected；
In step 402, more current pH value and first threshold；When pH value is greater than or equal to first threshold, enter step
403；When pH value is less than first threshold, 404 are entered step；
In step 403, collects regenerative elution liquid and be used for metal recovery；
In step 404, regenerative elution liquid is collected as regenerant recycle and utilizes or discharge regenerative elution liquid.
In step 405, more current pH value and second threshold return if current pH value is greater than or equal to second threshold
Step 404, if current pH value is less than or equal to second threshold, 406 are entered step；
In step 406, regeneration ending is determined.
Here, first threshold is greater than second threshold.
The other details of above-mentioned each process can refer to the description previously in conjunction with regenerating unit, not reinflated herein.
Flow chart has been used to be used to illustrate operation performed by process according to an embodiment of the present application herein.It should be understood that
, the operation of front not necessarily accurately carries out in sequence.On the contrary, various steps can be handled according to inverted order or simultaneously
Suddenly.Meanwhile or during other operations are added to these, or from these processes remove a certain step or number step operation.For example, right
For the application, step 405 can be immediately performed after step 402.
Implement example
According to an example, several addition ion exchange columns of ion exchange resin of absorption nickel saturation are taken, HCl solution is configured
(pH=0.6), the ion exchange column of loaded resin is passed through, every outflow 30mL regenerative elution liquid sample detection pH value,
Data such as table 1.
| PH value | Nickel ion concentration g/l |
| 4.8 | 12.9 |
| 4.1 | 20.5 |
| 3.06 | 29.7 |
| 2.12 | 34.0 |
| 1.2 | 5.7 |
| 0.78 | 3.7 |
| 0.64 | 0.1 |
| 0.62 | 0.01 |
Table 1
Statistics indicate that it is dense that the different pH value of the regenerative elution liquid of outflow corresponds to different nickel ions in resin regeneration process
Degree, may determine that, as pH >=1.2, nickel ion concentration is higher, and regenerative elution liquid as needed can be gathered up all from data
It recycles, as pH < 1.2, nickel ion concentration is lower, and regenerative elution liquid pH is lower, and recovery value is little, but can gather up
As regenerant recycle use, or it is directly entered waste water treatment system.As pH≤0.64, contained only in regenerative elution liquid micro-
The nickel of amount, it is believed that regeneration ending.
Test data shows can use the variation of the pH value of the regenerative elution liquid in regenerative process to control recycling metal
The concentration of ion and regenerated terminal.
Although the utility model is described with reference to current specific embodiment, ordinary skill in the art
Personnel it should be appreciated that more than embodiment be intended merely to illustrate the utility model, be detached from the spirit of the present invention no
In the case of can also make various equivalent change or replacement, therefore, as long as to upper in the spirit of the utility model
State the variation of embodiment, modification will all be fallen in the range of following claims.
Claims (7)
1. a kind of regeneration of ion-exchange resin device, characterized by comprising:
First interface, suitable for being connect with the input port of the ion exchange column comprising ion exchange resin；
Regenerative agent pipeline connects the first interface；
Second interface, suitable for being connect with the delivery outlet of the ion exchange column comprising ion exchange resin；
Output pipe connects the second interface；
PH sensor is set on the output pipe；
Control valve is set on the output pipe；
Controller, connects the pH sensor and the control valve, the controller current pH value and first threshold,
And first control signal is exported according to comparison result, the first control signal is exported to the control valve.
2. regeneration of ion-exchange resin device as described in claim 1, which is characterized in that further include:
Regenerative agent pump, is set on the regenerative agent pipeline；
The controller connects the regenerative agent pump, the controller current pH value and second threshold, and according to than
Relatively result exports second control signal, and the second control signal is transmitted to the regenerative agent pump.
3. regeneration of ion-exchange resin device as described in claim 1, which is characterized in that the controller includes the first ratio
Compared with device, the input terminal of the first comparator inputs the current pH value and first threshold respectively, the first comparator it is defeated
Outlet exports the first control signal.
4. regeneration of ion-exchange resin device as claimed in claim 2, which is characterized in that the controller includes the first ratio
Compared with device, the second comparator and/or door, the input terminal of the first comparator inputs the current pH value and first threshold, institute respectively
The input terminal for stating the second comparator inputs the current pH value and the second threshold respectively, and described or door input terminal connects respectively
The output end of the first comparator and the output end of second comparator are connect, wherein the output end of the first comparator is defeated
The first control signal out, described or door output end export the second control signal.
5. regeneration of ion-exchange resin device as described in claim 1, which is characterized in that the control valve connects first
Road and second branch, the control valve be connected to the output pipe and the first branch and be connected to the output pipe with
Switch between the second branch；
Wherein the first branch is for collecting regenerative elution liquid for metal recovery, the second branch for collect it is described again
Raw eluent utilizes or discharges the regenerative elution liquid as regenerant recycle.
6. regeneration of ion-exchange resin device as claimed in claim 5, which is characterized in that the control valve is triple valve.
7. regeneration of ion-exchange resin device according to claim 5, which is characterized in that the first branch is connected to
First storage container, the second branch are connected to the second storage container.
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| CN201820786740.6U CN208667178U (en) | 2018-05-24 | 2018-05-24 | Regeneration of ion-exchange resin device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526335A (en) * | 2018-05-24 | 2019-12-03 | 上海轻工业研究所有限公司 | Regeneration of ion-exchange resin method and apparatus |
| CN111003779A (en) * | 2019-11-18 | 2020-04-14 | 浙江浙能技术研究院有限公司 | Fine treatment regeneration system and wastewater classified collection method |
| CN111977863A (en) * | 2020-08-18 | 2020-11-24 | 浙江浙能技术研究院有限公司 | Method for classified collection and recycling of acid-base waste liquid generated by regeneration of fine-processed resin |
-
2018
- 2018-05-24 CN CN201820786740.6U patent/CN208667178U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526335A (en) * | 2018-05-24 | 2019-12-03 | 上海轻工业研究所有限公司 | Regeneration of ion-exchange resin method and apparatus |
| CN111003779A (en) * | 2019-11-18 | 2020-04-14 | 浙江浙能技术研究院有限公司 | Fine treatment regeneration system and wastewater classified collection method |
| CN111977863A (en) * | 2020-08-18 | 2020-11-24 | 浙江浙能技术研究院有限公司 | Method for classified collection and recycling of acid-base waste liquid generated by regeneration of fine-processed resin |
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