CN109827998A - Measure the concentration of basifier and the method for pH value relationship - Google Patents
Measure the concentration of basifier and the method for pH value relationship Download PDFInfo
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Abstract
The present invention relates to the methods of a kind of concentration for measuring basifier and pH value relationship.This method comprises the following steps: (a) providing demineralized water, removes the carbon dioxide in the demineralized water later；(b) according to stoichiometric ratio, to going in the demineralized water after removing carbon dioxide that basifier or alkalization agent solution is added, mixed liquor is obtained after mixing, measures the concentration of basifier in the pH value and mixed liquor of mixed liquor respectively；And (c) according to different stoichiometric ratios, to going in demineralized water or mixed liquor after removing carbon dioxide that basifier or alkalization agent solution is added, repeat the mixing and determination step in step (b), the concentration and pH value of basifier when obtaining several different stoichiometric ratios, production obtain the concentration of basifier and the relation curve of pH value.The above method establishes the concentration of basifier and the theoretical curve of pH value, implements the operation of automatic or manual quantitative dosing according to its linear relationship for unit and provides technical solution and theoretical foundation.
Description
Technical field
The present invention relates to nuclear power station secondary loop water chemistry technical field, more particularly to a kind of concentration for measuring basifier with
The method of pH value relationship.
Background technique
Before the nineties, PWR (presurized water reactor) nuclear power plant secondary coolant circuit system generallys use AVT all-volatile treatment (NH3-
N2H4).Nearly three during the last ten years, and organic amine, which is adjusted, replaces ammonia adjusting to be the development trend that secondary circuit water chemistry is adjusted.With routine
Basifier ammonia adjusting compare, organic amine (such as ethanol amine) is bigger than ammonia in the distribution coefficient of liquid phase, so that organic amine is in vapour-liquid two
Promote its pH value because solubility or distribution coefficient are higher in condensate liquid in phase, so that the fluid for reducing vehicle repair major accelerates
Corrode (FAC).To optimize the management of power station water chemistry, current AVT all-volatile treatment (NH is planned in power station3-N2H4) be changed to advanced have
Machine amine (ethanol amine+ammonia+N2H4) mixed processing.However, in specific application, it is not reasonable to the quantitative dosing operation of basifier
By foundation.
Summary of the invention
Based on this, it is necessary to aiming at the problem that quantitative dosing operation of basifier does not have theoretical foundation, provide a kind of measurement
The method of the concentration and pH value relationship of basifier.
A method of the concentration and pH value relationship of measurement basifier include the following steps:
(a) demineralized water is provided, removes the carbon dioxide in the demineralized water later；
(b) according to stoichiometric ratio, to going that basifier is added in the demineralized water after removing carbon dioxide or basifier is molten
Liquid obtains mixed liquor after mixing, measures the concentration of basifier in the pH value and the mixed liquor of the mixed liquor respectively；And
(c) according to different stoichiometric ratios, Xiang Suoshu is gone in demineralized water or the mixed liquor after removing carbon dioxide
Basifier or alkalization agent solution is added, repeats the mixing and determination step in step (b), obtains several different stoichiometric ratios
When basifier concentration and pH value, production obtain basifier concentration and pH value relation curve.
The theory of the method for the concentration and pH value relationship of said determination basifier, the concentration and pH value that establish basifier is bent
Line implements the operation of automatic or manual quantitative dosing according to its linear relationship for unit and provides technical solution and theoretical foundation,
When for instructing live unit secondary circuit basifier dosing, automatic regulation function may be implemented, saving the sampling point of basifier
Analysis greatlys save cost, improves working efficiency.
The alkalization agent solution in the step (b) is respectively the first alkalization agent solution and in one of the embodiments,
Two alkalization agent solutions, the operation of the step (b) and (c) are as follows:
(b) according to stoichiometric ratio, to going in the demineralized water after removing carbon dioxide to sequentially add the first alkalization agent solution
With the second alkalization agent solution, mixed liquor is obtained after mixing, measures alkali in the pH value and the mixed liquor of the mixed liquor respectively
The concentration of agent；And
(c) according to different stoichiometric ratios, Xiang Suoshu is gone in demineralized water or the mixed liquor after removing carbon dioxide
It is separately added into the first alkalization agent solution and the second alkalization agent solution, the constant concentration of the first basifier is controlled, repeats in step (b)
Mixing and determination step, the concentration and pH value of basifier when obtaining several different stoichiometric ratios, production obtain basifier
Concentration and pH value relation curve；
Wherein, the first alkalization agent solution and the second alkalization agent solution are different and component is single.
The solute of the first alkalization agent solution and the second alkalization agent solution is independently selected from one of the embodiments,
One of ammonia, ethanol amine and morpholine, and the solute of the first alkalization agent solution is different from the second alkalization solute of agent solution.
The solute of the first alkalization agent solution is ammonia in one of the embodiments,；The second alkalization agent solution
Solute is ethanol amine or morpholine.
The solvent of the first alkalization agent solution and the second alkalization agent solution is demineralized water in one of the embodiments,.
The basifier is ammonia or organic amine in one of the embodiments,.
The organic amine is morpholine or ethanol amine in one of the embodiments,.
The process for preparation of the alkalization agent solution in one of the embodiments, are as follows: according to stoichiometric ratio, provide desalination
Water removes the carbon dioxide in demineralized water, backward removal carbon dioxide after demineralized water in basifier is added, mix, i.e.,
?.
In one of the embodiments, it is described alkalization agent solution process for preparation operation in, the basifier be ammonia,
Quinoline or ethanol amine.
Maintaining temperature during the step (b) and (c) in one of the embodiments, is 25 DEG C.
Detailed description of the invention
Fig. 1 is the flow chart of the concentration of the measurement basifier of an embodiment of the present invention and the method for pH value relationship；
Fig. 2 is the concentration of the ammonia of an embodiment of the present invention and the linear relationship chart of pH value；
Fig. 3 is the concentration of the ethanol amine of an embodiment of the present invention and the linear relationship chart of pH value；
Fig. 4 is the concentration of the morpholine of an embodiment of the present invention and the linear relationship chart of pH value；
Fig. 5 is the linear relationship chart of the concentration of ammonia of an embodiment of the present invention, the concentration of ethanol amine and pH value；
Fig. 6 is that the secondary circuit ethanol amine of an embodiment of the present invention and ammonia mixing adjust medicine system layout drawing；
Fig. 7 is that the secondary circuit ethanol amine of an embodiment of the present invention and ammonia mix regulating liquid medicine compounding system schematic diagram.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, to specific embodiment party of the invention
Formula is described in detail.In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention.But this hair
Bright to be implemented with being much different from other way described herein, those skilled in the art can be without prejudice in the present invention
Similar improvement is done in the case where culvert, therefore the present invention is not limited by the specific embodiments disclosed below.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Referring to Figure 1, the method for the concentration Yu pH value relationship of a kind of measurement basifier of an embodiment of the present invention, including
Following steps:
(a) demineralized water is provided, removes the carbon dioxide in demineralized water later.
Be using demineralized water in order to simulate the water quality in actual motion system so that the relation curve of measurement more have it is theoretical according to
According to.
The operation of carbon dioxide in step (a) in removal demineralized water can be removed using nitrogen purging device.Tool
Body, the operation of the carbon dioxide in water sample is excluded using nitrogen purging device are as follows: demineralized water is added into reaction kettle, will lead to
Corresponding socket above tracheae, chemical feed pipe, pH electrode, conductance electrode and temp probe intercalation reaction kettle, makes reaction kettle keep closed
State completely cuts off outside air, opens nitrogen valve later and purges to water sample in kettle, while observing conductivity meter reading, to water
Sample conductivity is lower than 0.5 μ s/cm, and when no longer significantling change, it is believed that the carbon dioxide in water sample is purged totally.
(b) according to stoichiometric ratio, to going that basifier is added in the demineralized water after removing carbon dioxide or basifier is molten
Liquid obtains mixed liquor after mixing, and measures the concentration of basifier in the pH value and mixed liquor of mixed liquor respectively.
Specifically, to the operation that basifier or the agent solution that alkalizes is added is gone in the demineralized water after removing carbon dioxide are as follows:
Impact missing will be opened by connecting absorption unit of dioxide carbon at the top of reaction kettle, guarantees reaction kettle internal and external pressure balance, open dosing pump
A certain amount of basifier or alkalization agent solution are added into reaction kettle, opens simultaneously magnetic stirring apparatus, continuously stirs.
Preferably, basifier is ammonia or organic amine.Preferably, organic amine is morpholine or ethanol amine.Certainly, in order to meet reality
The demand of border application, can choose other basifiers.
Preferably, alkalize the process for preparation of agent solution are as follows: according to stoichiometric ratio, provides demineralized water, removes in demineralized water
Carbon dioxide, backward removal carbon dioxide after demineralized water in basifier is added, mix to get.Wherein, basifier is molten
In the operation of the process for preparation of liquid, basifier is ammonia, morpholine or ethanol amine.
It is highly preferred that the process for preparation of alkalization agent solution are as follows: according to stoichiometric ratio, be added into drug vial a certain amount of
Brand-new demineralized water, and purged with nitrogen, the carbon dioxide in demineralized water is excluded, is added by peristaltic pump into drug vial a certain amount of
Basifier, seal after the completion of magnetic agitation spare.Certainly, it can choose herein and individually prepare different types of alkalization
Agent solution can also prepare the alkalization agent solution of mixed species.
(c) according to different stoichiometric ratios, to going in demineralized water or mixed liquor after removing carbon dioxide that alkalization is added
Agent or alkalization agent solution, repeat the mixing and determination step in step (b), obtain alkalization when several different stoichiometric ratios
The concentration and pH value of agent, production obtain the concentration of basifier and the relation curve of pH value.
It is understood that according to different stoichiometric ratios, to going in the demineralized water after removing carbon dioxide that alkalization is added
Agent or the operation for the agent solution that alkalizes are to prepare to obtain the alkalization agent solution of various concentration respectively.And alkalization is added into mixed liquor
Agent or the operation for the agent solution that alkalizes are that basifier or alkalization agent solution are continuously added into mixed liquor, when obtaining various concentration
Alkalization agent solution.
Specifically, the step of concentration of measurement basifier are as follows: extract water sample by sampling pump, sampling is shut down after the completion of sampling
Pump analyzes basifier concentration using ion chromatograph.Certainly, sampling can also be carried out using other modes.
Preferably, it is 25 DEG C that temperature is maintained during step (b) and (c).
In one of the embodiments, when the alkalization agent solution in step (b) is respectively the first alkalization agent solution and second
Alkalize agent solution, the operation of step (b) and (c) are as follows:
(b) according to stoichiometric ratio, to going in the demineralized water after removing carbon dioxide to sequentially add the first alkalization agent solution
With the second alkalization agent solution, obtain mixed liquor after mixing, measure respectively mixed liquor pH value and basifier in mixed liquor it is dense
Degree.
(c) according to different stoichiometric ratios, to going in demineralized water or mixed liquor after removing carbon dioxide to be separately added into
First alkalization agent solution and second alkalization agent solution, control the first basifier constant concentration, repeat step (b) in mixing and
Determination step, the concentration and pH value of basifier when obtaining several different stoichiometric ratios, production obtain the concentration of basifier with
The relation curve of pH value.
Wherein, the first alkalization agent solution and the second alkalization agent solution are different and component is single.
In other words, when the alkalization agent solution in step (b) is respectively the first alkalization agent solution and the second alkalization agent solution, step
Suddenly the operation of (c) are as follows: according to different stoichiometric ratios, to going in demineralized water or mixed liquor after removing carbon dioxide to continue point
The the first alkalization agent solution and the second alkalization agent solution of several different stoichiometric ratios are not added, controls the concentration of the first basifier
Constant, the concentration of the second basifier is change of gradient.Mixed liquor when several different stoichiometric ratios is obtained after mixing, point
It alkalizes in mixed liquor when the pH value of mixed liquor when not measuring several different stoichiometric ratios and several different stoichiometric ratios
The concentration of agent, the concentration and pH value of basifier when obtaining several different stoichiometric ratios, production obtain the concentration of basifier with
The relation curve of pH value.
Specifically, when the alkalization agent solution in step (b) is respectively ammonia solution and ethanolamine solutions, the behaviour of step (b)
As: according to stoichiometric ratio, to going in the demineralized water after removing carbon dioxide to sequentially add ammonia solution and ethanolamine solutions, mix
Mixed liquor is obtained after even, measures the concentration of basifier in the pH value and mixed liquor of mixed liquor respectively.
(c) according to different stoichiometric ratios, to going in demineralized water or mixed liquor after removing carbon dioxide to be separately added into
Ammonia solution and ethanolamine solutions control the constant concentration of ammonia, and the concentration of ethanol amine is change of gradient, repeat in step (b)
It mixes and determination step, the concentration and pH value of basifier when obtaining several different stoichiometric ratios, production obtain basifier
The relation curve of concentration and pH value.
Similarly, it when the alkalization agent solution in step (b) is respectively ammonia solution and morpholine solution, operates with alkalization agent solution
It is similar when respectively ammonia solution is with ethanolamine solutions.
The theory of the method for the concentration and pH value relationship of said determination basifier, the concentration and pH value that establish basifier is bent
Line implements the operation of automatic or manual quantitative dosing according to its linear relationship for unit and provides technical solution and theoretical foundation,
When for instructing live unit secondary circuit basifier dosing, automatic regulation function may be implemented, saving the sampling point of basifier
Analysis greatlys save cost, improves working efficiency.
Below it is specific embodiment:
Embodiment 1
It is added demineralized water into drug vial, nitrogen purges 10min, the ammonia being added by peristaltic pump into drug vial,
Magnetic agitation 10min is under the conditions of 300r/min to get ammonia solution.
Demineralized water is added into 2L glass reaction kettle, by snorkel, chemical feed pipe, pH electrode and conductance electrode, temp probe
Socket is corresponded to etc. being sequentially inserted into above reaction kettle, reaction kettle is made to keep air-tight state, completely cuts off outside air.Nitrogen valve is opened to kettle
Middle water body is purged, until water body conductivity is lower than 0.5 μ s/cm.
Impact missing will be opened by connecting absorption unit of dioxide carbon at the top of reaction kettle, opens dosing pump and ammonia is added into reaction kettle
Solution, maintains 25 DEG C of constant temperature, opens simultaneously magnetic stirring apparatus, continuously stirs mixing with 300r/min, obtains mixed liquor.
In whipping process, pH meter is opened, continuous several times sampling reading stops sampling, and fixed reading after tending towards stability.
Sampling pump is opened later, takes 50mL mixed liquor with 100mLPP material quality sampling bottle, rapidly using the dense of ion chromatograph analysis ammonia
Degree.
The ammonia solution that dosing pump continues addition into reaction kettle is opened, the dense of ammonia in the pH value and mixed liquor of mixed liquor is measured
Degree.The pH for recording multiple concentration gradients makes the concentration of ammonia and the relational graph of pH value.
Experimental result: the concentration of ammonia and pH value are as shown in table 1, and linear relationship chart is referring to fig. 2.
The concentration and pH value of 1 ammonia of table
| The concentration (mg/L) of ammonia | PH value |
| 0.2092 | 8.863 |
| 0.6267 | 9.176 |
| 0.9687 | 9.312 |
| 1.5381 | 9.452 |
| 2.0474 | 9.535 |
| 2.5774 | 9.617 |
| 3.587 | 9.718 |
| 4.8882 | 9.81 |
| 5.7879 | 9.842 |
| 7.9736 | 9.927 |
Embodiment 2
The present embodiment measures the concentration and pH value relationship of ethanol amine, and with embodiment 1, difference is step, and basifier is second
Hydramine.
Experimental result: the concentration of ethanol amine is as shown in table 2 with pH value, and linear relationship chart is referring to Fig. 3.
The concentration and pH value of 2 ethanol amine of table
Embodiment 3
The present embodiment measures the concentration and pH value relationship of morpholine, and with embodiment 1, difference is step, and basifier is morpholine.
Experimental result: the concentration of morpholine and pH value are as shown in table 3, and linear relationship chart is referring to fig. 4.
The concentration and pH value of 3 morpholine of table
| The concentration (mg/L) of morpholine | PH value |
| 0.6837 | 8.52 |
| 2.71 | 8.86 |
| 3.6395 | 8.93 |
| 12.4542 | 9.27 |
| 15.6915 | 9.36 |
| 19.1185 | 9.4 |
| 26.18 | 9.45 |
| 32.2063 | 9.49 |
| 44.6719 | 9.59 |
| 59.8442 | 9.62 |
Embodiment 4
Demineralized water is added into drug vial a and drug vial b, nitrogen purges 10min, adds by peristaltic pump into drug vial a
Enter ammonia, ethanol amine is added into drug vial b, magnetic agitation 10min is molten to get ammonia solution and ethanol amine under the conditions of 300r/min
Liquid.
Demineralized water is added into 2L glass reaction kettle, by snorkel, chemical feed pipe, pH electrode and conductance electrode, temp probe
Socket is corresponded to etc. being sequentially inserted into above reaction kettle, reaction kettle is made to keep air-tight state, completely cuts off outside air.Nitrogen valve is opened to kettle
Middle water body is purged, until water body conductivity is lower than 0.5 μ s/cm.
Impact missing will be opened by connecting absorption unit of dioxide carbon at the top of reaction kettle, opens dosing pump and ammonia is added into reaction kettle
Solution and ethanolamine solutions, the constant concentration for controlling the ammonia in mixed liquor is 0.5mg/L, maintains 25 DEG C of constant temperature, opens simultaneously magnetic
Power blender continuously stirs mixing with 300r/min, obtains mixed liquor.
In whipping process, pH meter is opened, continuous several times sampling reading stops sampling, and fixed reading after tending towards stability.
Sampling pump is opened later, takes 50mL mixed liquor with 100mLPP material quality sampling bottle, rapidly using ion chromatograph analysis ethanol amine
Concentration.
It opens dosing pump to continue to add ammonia solution and ethanolamine solutions into reaction kettle, and the constant concentration for controlling ammonia is
The concentration gradient of 0.5mg/L, ethanol amine are increased, measure the concentration of ethanol amine in the pH value and mixed liquor of mixed liquor.It records more
The pH of a concentration gradient makes the relational graph of the concentration of ammonia, the concentration of ethanol amine and pH value.
When controlling the constant concentration of ammonia of mixed liquor is 1mg/L, 2mg/L, 3mg/L, same to above-mentioned steps.
Experimental result: the concentration of ammonia, the concentration of ethanol amine and pH value are as shown in table 4, and linear relationship chart is referring to Fig. 5.
Concentration, the concentration of ethanol amine and the pH value of 4 ammonia of table
Below it is concrete application example:
Fig. 6 is referred to, secondary circuit ethanol amine and ammonia mixing adjust medicine system 200.Demineralized water leads to after passing through condenser 201
Cross condensate pump 202.Wherein, the decanting point of ammonia and ethanol amine is in position S1, and the decanting point of hydrazine is in position S2, in decanting point S1
Downstream position 203 equipped with on-line monitoring pH value instrument and on-line monitoring than conductivity table.
Fig. 7 is referred to, when adjusting using mixed base Automatic Dosing, secondary circuit ethanol amine and ammonia mixing regulating liquid medicine prepare system
The operating mode of system 300 is as follows:
Ammoniate pump operation mode: pump 310 uses continuously-running duty, real according to the current regulative mode of operating experience and power station
Now ammonification is adjusted, and maintains stable secondary circuit water supply pH=9.6.
Add the method for operation of hydrazine: hydrazine solution Scatula 301, hydrazine is injected into secondary circuit system by pump 311 or pump 312
321 position in system, dosing pump is realized using continuously-running duty plus hydrazine is adjusted, and is remained constant and is pumped out power, and hydrazine is adjusted
Concentration is to target value.
Add the control mode of ethanol amine: calculating ethanol amine needed for promoting secondary coolant circuit system 1mg/kg according to secondary circuit volume
Weight is poured into batch meter 302, then enters Scatula 303 by batch meter, is injected into secondary coolant circuit system by pump 313
320 positions.Online pH measurement is carried out by downstream pH table 330, pH feedback signal is to pump 313, to adjust the flow of dosing, thus
Reach required pH target value.By the way that ammonia or ethanolamine concentration can be obtained to secondary coolant circuit system sampling, due to being kept during operation
Ammonia density is constant, by above-mentioned curve and pH value, anticipated that rough ethanolamine concentration.
Pass through the concentration of ethanol amine, the curved line relation of the concentration of ammonia and pH value, under the conditions of fixed ammonia density, Ke Yigen
According to surveyed pH target value, 313 power output of pump can be manually adjusted, or ethanol amine is automatically adjusted by setting highest pH target value
Dosage.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of method of the concentration for measuring basifier and pH value relationship, which comprises the steps of:
(a) demineralized water is provided, removes the carbon dioxide in the demineralized water later；
(b) it according to stoichiometric ratio, to going in the demineralized water after removing carbon dioxide that basifier or alkalization agent solution is added, mixes
Mixed liquor is obtained after even, measures the concentration of basifier in the pH value and the mixed liquor of the mixed liquor respectively；And
(c) according to different stoichiometric ratios, Xiang Suoshu goes in demineralized water or the mixed liquor after removing carbon dioxide to be added
Basifier or alkalization agent solution, repeat the mixing and determination step in step (b), when obtaining several different stoichiometric ratios
The concentration and pH value of basifier, production obtain the concentration of basifier and the relation curve of pH value.
2. the method for the concentration and pH value relationship of measurement basifier according to claim 1, which is characterized in that the step
(b) the alkalization agent solution in is respectively the first alkalization agent solution and the second alkalization agent solution, the operation of the step (b) and (c)
Are as follows:
(b) according to stoichiometric ratio, to going in the demineralized water after removing carbon dioxide to sequentially add the first alkalization agent solution and
Two alkalization agent solutions, obtain mixed liquor after mixing, measure basifier in the pH value and the mixed liquor of the mixed liquor respectively
Concentration；And
(c) according to different stoichiometric ratios, Xiang Suoshu is gone in demineralized water or the mixed liquor after removing carbon dioxide respectively
The first alkalization agent solution and the second alkalization agent solution is added, controls the constant concentration of the first basifier, repeats mixed in step (b)
Even and determination step, the concentration and pH value of basifier when obtaining several different stoichiometric ratios, production obtain the dense of basifier
The relation curve of degree and pH value；
Wherein, the first alkalization agent solution and the second alkalization agent solution are different and component is single.
3. the method for the concentration and pH value relationship of measurement basifier according to claim 2, which is characterized in that described first
The solute of alkalization agent solution and the second alkalization agent solution is independently selected from one of ammonia, ethanol amine and morpholine, and the first basifier
The solute of solution is different from the second alkalization solute of agent solution.
4. the method for the concentration and pH value relationship of measurement basifier according to claim 2, which is characterized in that described first
The solute of alkalization agent solution is ammonia；The solute of the second alkalization agent solution is ethanol amine or morpholine.
5. the method for the concentration and pH value relationship of measurement basifier according to claim 2, which is characterized in that described first
The solvent of alkalization agent solution and the second alkalization agent solution is demineralized water.
6. the method for the concentration and pH value relationship of measurement basifier according to claim 1, which is characterized in that the alkalization
Agent is ammonia or organic amine.
7. the method for the concentration and pH value relationship of measurement basifier according to claim 6, which is characterized in that described organic
Amine is morpholine or ethanol amine.
8. the method for the concentration and pH value relationship of measurement basifier according to claim 1, which is characterized in that the alkalization
The process for preparation of agent solution are as follows: according to stoichiometric ratio, demineralized water is provided, removes the carbon dioxide in demineralized water, it is to go backward
Be added basifier in demineralized water after removing carbon dioxide, mix to get.
9. the method for the concentration and pH value relationship of measurement basifier according to claim 8, which is characterized in that the alkalization
In the operation of the process for preparation of agent solution, the basifier is ammonia, morpholine or ethanol amine.
10. the method for the concentration and pH value relationship of measurement basifier according to claim 1, which is characterized in that the step
Suddenly it is 25 DEG C that temperature is maintained during (b) and (c).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114477407A (en) * | 2022-01-06 | 2022-05-13 | 广东核电合营有限公司 | Nuclear power station secondary loop pH adjusting method and system |
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Application publication date: 20190531 |
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