CN109174211A - Device is monitored and controlled in the transition of ion exchange resin - Google Patents
Device is monitored and controlled in the transition of ion exchange resin Download PDFInfo
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- CN109174211A CN109174211A CN201710523311.XA CN201710523311A CN109174211A CN 109174211 A CN109174211 A CN 109174211A CN 201710523311 A CN201710523311 A CN 201710523311A CN 109174211 A CN109174211 A CN 109174211A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
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- Treatment Of Water By Ion Exchange (AREA)
Abstract
The present invention provides a kind of transition of ion exchange resin, and device is monitored and controlled.The transition monitoring device of ion exchange resin, including conductivity sensor and controller.The water outlet conductivity of ion exchange resin in conductivity sensor detection transition.Controller compares water outlet conductivity and first threshold, when water outlet conductivity is lower than first threshold, judges that ion exchange resin is in the normal transition stage；And compare water outlet conductivity and second threshold, when water outlet conductivity reaches second threshold, judge that ion exchange resin is in transition and is basically completed the stage.
Description
Technical field
The invention mainly relates to the technical field of ion exchange technique progress water process more particularly to a kind of amberlites
Device is monitored and controlled in the transition of rouge.
Background technique
It needs to use acid regeneration after weak-acid cation-exchange resin and the saturation failure of certain chelating class ion exchange resin, so
It is made the transition again with sodium hydroxide afterwards, the exchangeable ion in its cation exchange groups is made to be changed into sodium ion (i.e. by hydrogen by hydrogen ion
Type switchs to sodium form), to restore absorption property, reuse.
The transition of resin at present mostly uses greatly quantitative pharmacy method, i.e. configuration a certain concentration and the transition of the sodium hydroxide of volume
Agent flows through the ion exchange resin of Hydrogen with certain flow velocity and time, and the hydroxyl and hydrogen ion in the agent that makes the transition are combined into water,
And sodium ion then substitutes hydrogen ion in conjunction with the cation exchange groups of resin, completes the transition of resin.In order to make resin sufficiently make the transition, turn
The use of type agent sodium hydroxide is typically excessive, the general excess 10-30% compared with the operating capacity of resin.Hydrogen-oxygen
Change sodium and excessively not only increase reagent consumption amount, and increase the water and concentration of cleaning waste water, gives subsequent wastewater treatment band
Carry out pressure, production cost also correspondinglys increase.
Summary of the invention
The technical problem to be solved in the present invention is to provide the transition of ion exchange resin, and device is monitored and controlled, and can save
The use of transition agent.
In order to solve the above technical problems, the present invention proposes a kind of transition monitoring device of ion exchange resin, including conductance
Rate sensor and controller.The water outlet conductivity of ion exchange resin in conductivity sensor detection transition.Controller compares
The water outlet conductivity and first threshold judge the ion exchange when the water outlet conductivity is lower than the first threshold
Resin is in the normal transition stage；And the water outlet conductivity and second threshold, when the water outlet conductivity reaches described
When second threshold, judge that the ion exchange resin is in transition and is basically completed the stage.
In one embodiment of this invention, the controller also judge the ion exchange resin be in transition be basically completed
After stage, the time for maintaining the second threshold or more to the water outlet conductivity carries out timing；And when timing time reaches
When to third threshold value, determine that transition is completed.
In one embodiment of this invention, the ion exchange resin is weak-acid cation-exchange resin or chelating class sun
Ion exchange resin.
In one embodiment of this invention, the ion exchange resin uses sodium hydroxide as transition agent.
The present invention also proposes a kind of transition control device of ion exchange resin, including conductivity sensor, pump and control
Device.The water outlet conductivity of ion exchange resin in conductivity sensor detection transition.Pump is set in the pipeline of conveying transition agent.
Controller compares water outlet conductivity and first threshold, when water outlet conductivity is lower than the first threshold, judges amberlite
Rouge is in the normal transition stage, and pump is enabled to continue input transition agent；And the water outlet conductivity and second threshold, when it is described go out
When water conductivity reaches the second threshold, judges that the ion exchange resin is in transition and is basically completed the stage, enable pump stop defeated
Enter the agent that makes the transition.
In one embodiment of this invention, the ion exchange resin is weak-acid cation-exchange resin or chelating class sun
Ion exchange resin.
In one embodiment of this invention, the ion exchange resin uses sodium hydroxide as transition agent.
The present invention also proposes a kind of transition control device of ion exchange resin, including conductivity sensor, pump and control
Device.The water outlet conductivity of ion exchange resin in conductivity sensor detection transition.Pump is set in the pipeline of conveying transition agent.
Controller compares water outlet conductivity and first threshold, when water outlet conductivity is lower than first threshold, judges at ion exchange resin
In the normally transition stage, pump is enabled to continue input transition agent；And compare water outlet conductivity and second threshold, when water outlet conductivity reaches
When second threshold, judges that ion exchange resin is in transition and is basically completed the stage, pump is enabled to continue input transition agent；To water outlet conductance
The time that rate maintains the second threshold or more carries out timing；And when timing time reaches third threshold value, judgement has made the transition
At order pump stops input transition agent.
In one embodiment of this invention, the ion exchange resin is weak-acid cation-exchange resin or chelating class sun
Ion exchange resin.
In one embodiment of this invention, the ion exchange resin uses sodium hydroxide as transition agent.
Compared with prior art, the present invention judges ion exchange resin transition terminal by conductivity, there is higher standard
True rate, it is possible to reduce the use for the agent that makes the transition.
Detailed description of the invention
Fig. 1 is ion exchange resin transition schematic diagram.
Fig. 2 is the transition equipment schematic diagram of ion exchange resin according to an embodiment of the invention.
Fig. 3 is the transition monitoring flow chart of ion exchange resin according to an embodiment of the invention.
Fig. 4 is the transition monitoring flow chart of ion exchange resin according to another embodiment of the present invention.
Fig. 5 is the transition control flow chart of ion exchange resin according to an embodiment of the invention.
Fig. 6 is the transition control flow chart of ion exchange resin according to another embodiment of the present invention.
Fig. 7 is the exemplary electrical conductance change curve of transformation process according to an embodiment of the invention.
Specific embodiment
For the above objects, features and advantages of the present invention can be clearer and more comprehensible, below in conjunction with attached drawing to tool of the invention
Body embodiment elaborates.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
It is different from other way described herein using other and implements, therefore the present invention is by the limit of following public specific embodiment
System.
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, method or apparatus
The step of may also including other or element.
The transition that the embodiment of the present invention describes ion exchange resin is monitored and controlled.The embodiment of the present invention passes through monitoring
State change inside transformation process ion exchange resin judges the time point that transition is basically completed or completes.It correspondingly, can be with
Stop input transition agent in these time points, so as to avoid being excessively used for transition agent is avoided.
Following exchange reaction occurs in cation exchange resin transformation process:
R-H+NaOH=R-Na+H2O (1)
In formula (1): R is ion exchange resin group, and H is the hydrogen ion being adsorbed on resins exchange group, and NaOH is to turn
Type agent, H2O is water.
After cation exchange resin acid regeneration, cation exchange groups become h type resin in conjunction with hydrogen ion.When with hydroxide
When sodium makes the transition, hydroxyl and hydrogen ion are combined into weak electrolyte water, and by out position to sodium ion, resin is switched to hydrogen ion by Hydrogen
Sodium form.From reaction equation it can be seen that unique product is water after transition other than sodium form resin.Theoretically judge, if
In the case where not having other impurities, what is obtained during transition is pure water.Ion for the purpose of purification, concentration, recycling is handed over
It changes for application, regenerative agent acid and transition agent sodium hydroxide are formulated with the higher water of purity, and resin is cleaned
It is pure water, therefore impurity is seldom.It is linear due to existing between the concentration and conductivity of the higher sodium hydroxide solution of purity
Relationship, so want the process that ion exchange resin conversion is observed by the purity variation of detection transformation process intermediate ion switching equipment water outlet,
It therefrom obtains rule, and then accurately controls transition terminal.
Further, the h type resin for regenerating completion, enters transition program after pure water cleans, and transition agent sodium hydroxide enters
Exchange column, fair current (or adverse current) are made the transition by resin layer by above-mentioned principle.Under the flow velocity of process stipulation, sodium hydroxide
Almost all is consumed in transition, and forms transition exchange band, and transition is completed in the resin in exchange band, and leaves exchange band
It is the product of isomerization --- water.With the continuation of transition, transition exchange band elapses gradually downward, until transition is completed.
Fig. 7 is the exemplary electrical conductance change curve of transformation process according to an embodiment of the invention.Refering to what is shown in Fig. 7,
In the first stage of transition, i.e., during normal transition, stable effluent quality, purity is higher, and conductivity is in the lower section C1,
In this stage except special circumstances do not need to carry out control intervention to operation；Second stage, before transition is nearly completed, transition agent is opened
Begin to leak, conductivity occurs jumping in short period T1, reaches C2.It can be with when time T1 internal conductance rate is mutated from C1 to C2
It is judged as that transition is basically completed.
Preferably, conductivity can also be delayed the regular hour after reaching C2 in order to keep the transition of resin as abundant as possible,
No longer decline determines that transition is completed after C2 is maintained T2 minutes, and transition terminates.
Fig. 2 is the transition equipment schematic diagram of ion exchange resin according to an embodiment of the invention.Refering to what is shown in Fig. 2, turning
Type equipment 20 may include ion exchange column 21, conductivity sensor 22, controller 24, pump 26 and transition agent slot 28.Ion is handed over
Changing in column 21 has ion exchange resin.Ion-exchange resins weak-acid cation-exchange resin in this way or chelating cationoid
Exchanger resin etc. uses the ion exchange resin of acid regeneration.Ion exchange column 21 passes through the transition connection transition agent slot 28 of agent pipeline 27
To obtain the required transition agent of transition.Setting pump 26 is on transition agent pipeline 27 with the dosage of decision transition agent.Ion exchange column 21
With outlet pipeline 29, conductivity sensor 22 is set on outlet pipeline 29, to detect the water outlet conductivity of ion exchange column 21.
Conductivity sensor 22 connects controller 24 by signal wire 23.Controller 24 can be judged to make the transition according to the variation of conductivity into
Capable degree.Further, the degree that controller 24 can be carried out according to transition decides whether to continue to input to ion exchange column 21
Make the transition agent.According to decision as a result, controller 24 exports control signal to by the pump 26 connected to it of control line 25.
In an embodiment of the present invention, controller 24 can add in such as combination of program, hardware or program and hardware
To implement.Such as controller 24 can be in one or more specific integrated circuits (ASIC), digital signal processor (DSP), number
Signal processor (DAPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller,
The selection of microcontroller, microprocessor, other electronic devices for executing above-mentioned function or above-mentioned apparatus is combined to be subject to reality
It applies.
When implementing, controller 24 can be combined in conductivity meter, as part of it.Conductivity meter can have prison
Control and display function.
Fig. 3 is the transition monitoring flow chart of ion exchange resin according to an embodiment of the invention.Refering to what is shown in Fig. 3, this
The transition of the ion exchange resin of embodiment monitors process, comprising the following steps:
The water outlet conductivity of ion exchange resin in step 301, detection transition；
In step 302, compare water outlet conductivity and first threshold, when water outlet conductivity be lower than first threshold when, judge from
Sub-exchange resin is in the normal transition stage；
In step 303, compare water outlet conductivity and second threshold, when water outlet conductivity reaches second threshold, judge from
Sub-exchange resin is in transition and is basically completed the stage.
More specifically, in step 302, by taking sodium hydroxide is transition agent as an example, the hydroxide ion (OH of sodium hydroxide-)
All with hydrogen ion (H on resins exchange group+) combine, generate water (H2O), resin adsorption sodium ion (Na+) after switch to sodium
Type.This stage leave ion exchange column mainly transition product --- water, purity is higher, conductivity is in lower area
Between, if the conductivity upper limit in this stage is first threshold C1.If detecting water outlet conductivity lower than first threshold C1, then it is assumed that
Ion exchange resin is in the first stage, i.e., normally makes the transition the stage.
In step 303, when transition is nearly completed, sodium hydroxide starts to leak, and water outlet purity reduces, and conductivity is quick
Rise, it may appear that an apparent jumping.If the high level in conductivity jumping section is second threshold C2.If detecting out water power
Conductance reaches second threshold C2, then it is assumed that ion exchange resin is in second stage, i.e. transition is basically completed the stage.
Fig. 4 is the transition monitoring flow chart of ion exchange resin according to another embodiment of the present invention.Refering to what is shown in Fig. 4,
The transition of the ion exchange resin of the present embodiment monitors process, comprising the following steps:
The water outlet conductivity of ion exchange resin in step 401, detection transition；
In step 402, compare water outlet conductivity and first threshold, when water outlet conductivity be lower than first threshold when, judge from
Sub-exchange resin is in the normal transition stage；
In step 403, compare water outlet conductivity and second threshold, when water outlet conductivity reaches second threshold, judge from
Sub-exchange resin is in transition and is basically completed the stage；
In step 404, the time for maintaining second threshold or more to water outlet conductivity carries out timing；
In step 405, when timing time reaches third threshold value, determine that transition is completed.
The same previous embodiment of step 401-403 of the present embodiment, it is not reinflated herein.In step 404 and 405, in order to
Keep the transition of resin as abundant as possible, conductivity also needs the regular hour that is delayed after reaching second threshold C2, works as second threshold
No longer decline determines that transition is completed after C2 is maintained third threshold value T2 minutes.
Fig. 5 is the transition control flow chart of ion exchange resin according to an embodiment of the invention.Refering to what is shown in Fig. 5, this
The transition control flow of the ion exchange resin of embodiment, comprising the following steps:
The water outlet conductivity of ion exchange resin in step 501, detection transition；
In step 502, compare water outlet conductivity and first threshold, when water outlet conductivity be lower than first threshold when, judge from
Sub-exchange resin is in the normal transition stage, continues input transition agent；
In step 503, compare water outlet conductivity and second threshold, when water outlet conductivity reaches second threshold, judge from
Sub-exchange resin is in transition and is basically completed the stage, stops input transition agent.
More specifically, in step 502, when ion exchange resin is in the normal transition stage, pump can be kept
It opens, continues input transition agent.In step 503, it when ion exchange resin, which is in transition, is basically completed the stage, can close
Pump stops input transition agent.
Fig. 6 is the transition control flow chart of ion exchange resin according to another embodiment of the present invention.Refering to what is shown in Fig. 6,
The transition control flow of the ion exchange resin of the present embodiment, comprising the following steps:
The water outlet conductivity of ion exchange resin in step 601, detection transition；
In step 602, compare water outlet conductivity and first threshold, when water outlet conductivity be lower than first threshold when, judge from
Sub-exchange resin is in the normal transition stage, continues input transition agent；
In step 603, compare water outlet conductivity and second threshold, when water outlet conductivity reaches second threshold, judge from
Sub-exchange resin is in transition and is basically completed the stage, continues input transition agent；
In step 604, the time for maintaining second threshold or more to water outlet conductivity carries out timing；
In step 605, when timing time reaches third threshold value, determines that transition is completed, stop input transition agent.
More specifically, in step 602, when ion exchange resin is in the normal transition stage, pump can be kept
It opens, continues input transition agent.In step 603, it when ion exchange resin, which is in transition, is basically completed the stage, can keep
The unlatching of pump continues input transition agent.In step 605, it when ion exchange resin is in the transition completion stage, can close
Pump stops input transition agent.
Above-mentioned monitoring process and control flow can be in conjunction with implementing in transition equipment 20 shown in Fig. 2, can also be
Implement in its change case or other equipment.
From another viewpoint, the embodiment of the present invention describes a kind of transformation process monitoring device of ion exchange resin, packet
Include conductivity sensor 22 and controller 24 as shown in Figure 2.Ion exchange resin in the detection transition of conductivity sensor 22
Water outlet conductivity.Controller 24 compares water outlet conductivity and first threshold C1, when water outlet conductivity is lower than first threshold C1,
Judge that ion exchange resin is in the normal transition stage；And compare water outlet conductivity and second threshold C2, when water outlet conductivity reaches
When to second threshold C2, judge that ion exchange resin is in transition and is basically completed the stage.
Controller 24 can also judge ion exchange resin be in transition be basically completed the stage after, to water outlet conductivity tie up
Hold the time progress timing more than second threshold C2；And when timing time reaches third threshold value T2, determine that transition is completed.
From another viewpoint, the embodiment of the present invention describes a kind of transition control device of ion exchange resin, including such as
Conductivity sensor 22, controller 24 and pump 26 shown in Fig. 2.Ion exchange resin in the detection transition of conductivity sensor 22
Water outlet conductivity.Controller 24, compares water outlet conductivity and first threshold, when water outlet conductivity is lower than first threshold, sentences
Dialysis sub-exchange resin is in the normal transition stage, and pump 26 is enabled to continue input transition agent；And compare water outlet conductivity and the second threshold
Value judges that ion exchange resin is in transition and is basically completed the stage, pump 26 is enabled to stop when water outlet conductivity reaches second threshold
Input transition agent.
From another viewpoint, the embodiment of the present invention describes a kind of transition control device of ion exchange resin, including such as
Conductivity sensor 22, controller 24 and pump 26 shown in Fig. 2.Ion exchange resin in the detection transition of conductivity sensor 22
Water outlet conductivity.Controller 24, compares water outlet conductivity and first threshold, when water outlet conductivity is lower than first threshold, sentences
Dialysis sub-exchange resin is in the normal transition stage, and pump 26 is enabled to continue input transition agent；And compare water outlet conductivity and the second threshold
Value judges that ion exchange resin is in transition and is basically completed the stage, pump 26 is enabled to continue when water outlet conductivity reaches second threshold
Input transition agent.The time that controller 24 also maintains second threshold or more to water outlet conductivity carries out timing；And when timing
Between when reaching third threshold value, determine that transition is completed, pump 26 enabled to stop input transition agent.
Parameter C1, C2, T1, T2 described in above-described embodiment can be set according to practical situations.
Name the example of a practical application.
It takes acid regeneration and ion exchange column is added with the ion exchange resin 80ml that pure water has eluted, configure 4% NaOH
Make the transition agent, passes through the ion exchange column of loaded resin, every 20mL (85 seconds) sample detection conductivity, data such as table 1.
1 ion exchange resin of table transition water outlet conductivity
Statistics indicate that ion exchange resin conversion first stage conductivity is in low level, less than 100 μ s/cm, when transition agent additional amount reaches
To conductivity increases rapidly when (time 510-595 second) between 120-140mL, 17300 μ s/cm, explanation are risen to from 38 μ s/cm
Ion exchange resin conversion is basically completed when transition agent usage amount reaches 160mL.
In contrast, the 4%NaOH transition agent that 2.5 times of resin volumes are generally required using the transition of quantitative pharmacy method, by this
It tests 80ml resin volume to calculate, transition agent 200ml need to be used.Obviously, judge that control transition terminal can be used less by conductivity
Make the transition agent 40mL, saves 20%.
Therefore test data demonstrates the variation of the water outlet conductivity during can use ion exchange resin conversion to judge to make the transition
Terminal scheme.
Correspondingly in this example, first threshold C1 can be set as about 100 μ S/cm of conductivity, belonged within this range
Normal transition state；Second threshold C2 is set as about 2000 μ S/cm, reaches the value when conductivity is interior at about 1.5 minutes (T1),
Illustrate that ion exchange resin conversion is basically completed；Third threshold value T2 is set as about 2 minutes, confirms that transition is completed after stablizing and maintaining 2 minutes.
C1, C2, T1 and T2 can be accumulated according to operation data and be set in the present embodiment, for whether observing transformation process
Stable operation if corresponding measure can be taken by going beyond the scope, such as occurs will appear electricity when resin layer short circuit, channel, random layer
The case where conductance rises extremely can issue alarm signal at this time, remind operator, or directly arrestment operation.
Basic conception is described above, it is clear that those skilled in the art, foregoing invention discloses only
As an example, and not constituting the restriction to the application.Although do not clearly state herein, those skilled in the art may
The application is carry out various modifications, improve and is corrected.Such modification, improvement and amendment are proposed in this application, so such
Modification improves, corrects the spirit and scope for still falling within the application example embodiment.
Meanwhile the application has used particular words to describe embodiments herein.Such as " one embodiment ", " one implements
Example ", and/or " some embodiments " mean a certain feature relevant at least one embodiment of the application, structure or feature.Cause
This, it should be highlighted that and it is noted that " embodiment " or " an implementation referred to twice or repeatedly in this specification in different location
Example " or " alternate embodiment " are not necessarily meant to refer to the same embodiment.In addition, in one or more embodiments of the application
Certain features, structure or feature can carry out combination appropriate.
Similarly, it is noted that in order to simplify herein disclosed statement, to help real to one or more invention
Apply the understanding of example, above in the description of the embodiment of the present application, sometimes by various features merger to one embodiment, attached drawing or
In descriptions thereof.But this disclosure method is not meant to mention in aspect ratio claim required for the application object
And feature it is more.In fact, the feature of embodiment will be less than whole features of the single embodiment of above-mentioned disclosure.
The number of description ingredient, number of attributes is used in some embodiments, it should be appreciated that such to be used for embodiment
The number of description has used qualifier " about ", " approximation " or " generally " to modify in some instances.Unless in addition saying
It is bright, " about ", " approximation " or " generally " show the variation that the number allows to have ± 20%.Correspondingly, in some embodiments
In, numerical parameter used in description and claims is approximation, approximation feature according to needed for separate embodiment
It can change.In some embodiments, numerical parameter is considered as defined significant digit and using the reservation of general digit
Method.Although the Numerical Range and parameter in some embodiments of the application for confirming its range range are approximation, specific real
It applies in example, being set in for such numerical value is reported as precisely as possible in feasible region.
Although the present invention is described with reference to current specific embodiment, those of ordinary skill in the art
It should be appreciated that above embodiment is intended merely to illustrate the present invention, can also make in the case where no disengaging spirit of that invention
Various equivalent change or replacement out, therefore, as long as to the variation of above-described embodiment, change in spirit of the invention
Type will all be fallen in the range of following claims.
Claims (10)
1. a kind of transition monitoring device of ion exchange resin, comprising:
Conductivity sensor detects the water outlet conductivity of the ion exchange resin in transition；
Controller, the water outlet conductivity and first threshold are sentenced when the water outlet conductivity is lower than the first threshold
The ion exchange resin that breaks is in the normal transition stage；And the water outlet conductivity and second threshold, when the water outlet
When conductivity reaches the second threshold, judge that the ion exchange resin is in transition and is basically completed the stage.
2. the transition monitoring device of ion exchange resin as described in claim 1, which is characterized in that the controller is also being sentenced
Break the ion exchange resin be in transition be basically completed after the stage, to the water outlet conductivity maintain the second threshold with
On time carry out timing；And when timing time reaches third threshold value, determine that transition is completed.
3. the transition monitoring device of ion exchange resin according to claim 1, which is characterized in that the amberlite
Rouge is weak-acid cation-exchange resin or chelating cationoid exchanger resin.
4. the transition monitoring device of ion exchange resin according to claim 1, which is characterized in that the amberlite
Rouge uses sodium hydroxide as transition agent.
5. a kind of transition control device of ion exchange resin, comprising:
Conductivity sensor detects the water outlet conductivity of the ion exchange resin in transition；
Pump, in the pipeline of conveying transition agent；
Controller, the water outlet conductivity and first threshold are sentenced when the water outlet conductivity is lower than the first threshold
The ion exchange resin that breaks is in the normal transition stage, and the pump is enabled to continue input transition agent；And the water outlet conductivity
It is basic to judge that the ion exchange resin is in transition when the water outlet conductivity reaches the second threshold with second threshold
The completion stage enables the pump stop input transition agent.
6. the transition control device of ion exchange resin according to claim 5, which is characterized in that the amberlite
Rouge is weak-acid cation-exchange resin or chelating cationoid exchanger resin.
7. the transition control device of ion exchange resin according to claim 5, which is characterized in that the amberlite
Rouge uses sodium hydroxide as transition agent.
8. a kind of transition control device of ion exchange resin, comprising:
Conductivity sensor detects the water outlet conductivity of the ion exchange resin in transition；
Pump, in the pipeline of conveying transition agent；
Controller, the water outlet conductivity and first threshold are sentenced when the water outlet conductivity is lower than the first threshold
The ion exchange resin that breaks is in the normal transition stage, and the pump is enabled to continue input transition agent；And the water outlet conductivity
It is basic to judge that the ion exchange resin is in transition when the water outlet conductivity reaches the second threshold with second threshold
The completion stage enables the pump continue input transition agent；The time of the second threshold or more is maintained to the water outlet conductivity
Carry out timing；And when timing time reaches third threshold value, determines that transition is completed, the pump is enabled to stop input transition agent.
9. the transition control device of ion exchange resin according to claim 8, which is characterized in that the amberlite
Rouge is weak-acid cation-exchange resin or chelating cationoid exchanger resin.
10. the transition control device of ion exchange resin according to claim 8, which is characterized in that the ion exchange
Resin uses sodium hydroxide as transition agent.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851835A (en) * | 2021-03-10 | 2021-05-28 | 上海核工程研究设计院有限公司 | Device for preparing strong acid sodium type resin |
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