CN107703273A - The assay method and measure device of water treatment agent scale-inhibiting properties - Google Patents
The assay method and measure device of water treatment agent scale-inhibiting properties Download PDFInfo
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- CN107703273A CN107703273A CN201711140820.0A CN201711140820A CN107703273A CN 107703273 A CN107703273 A CN 107703273A CN 201711140820 A CN201711140820 A CN 201711140820A CN 107703273 A CN107703273 A CN 107703273A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 223
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 80
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 42
- 238000003556 assay Methods 0.000 title claims abstract description 29
- 239000012085 test solution Substances 0.000 claims abstract description 68
- 238000001704 evaporation Methods 0.000 claims abstract description 64
- 230000008020 evaporation Effects 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 230000003020 moisturizing effect Effects 0.000 claims abstract description 18
- 230000005764 inhibitory process Effects 0.000 claims abstract description 17
- 238000002474 experimental method Methods 0.000 claims abstract description 15
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 28
- 239000000498 cooling water Substances 0.000 claims description 21
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 20
- 229910001424 calcium ion Inorganic materials 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 20
- 238000011049 filling Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000005273 aeration Methods 0.000 abstract description 5
- 238000004088 simulation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007115 recruitment Effects 0.000 abstract description 3
- 238000005292 vacuum distillation Methods 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 238000004448 titration Methods 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 230000004087 circulation Effects 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/1853—Hardness of water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4022—Concentrating samples by thermal techniques; Phase changes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The present invention relates to a kind of assay method of water treatment agent scale-inhibiting properties, it is to be concentrated by evaporation experiment by carrying out contrast with the moisturizing of blank cycle water to the test solution for adding water treatment agent, in conjunction with circulating cooling make-up water performance parameter, the scale inhibition performance of water treatment agent is obtained, evaluates the scale-inhibiting properties of water treatment agent.The assay method of acquisition, because of the promotion fouling condition by being concentrated by evaporation in test simulation heat exchanger under the fouling condition of recirculated water concentration process and recirculated water aeration state, make trystate extremely close with the running status of field working conditions recirculated water, so as to obtain the measurement result of high, the closer reality of accuracy, and test period is short, it can provide for the onsite application of water treatment agent and fast and effectively instruct.The measure device of the water treatment agent scale-inhibiting properties of the present invention, on the basis of conventional vacuum distillation equipment, the quantitative control unit to test solution evaporation water reception amount and test solution magnitude of recruitment is added, is precisely controlled beneficial to assay method, the Effec-tive Function of assay method more conducively of the present invention.
Description
Technical field
The present invention relates to water treatment agent performance detection technical field, more particularly to a kind of measure of water treatment agent scale-inhibiting properties
Method, meanwhile, further relate to the measure device for the assay method.
Background technology
Currently used water treatment agent scale-inhibiting properties method of testing has tosca method, Bubbling method and limit carbonate to sink
Shallow lake method.Wherein, tosca method and Bubbling method, tested using configuration water, be only capable of the scale-inhibiting properties of reaction water treatment agent
Ability, specific scale-inhibiting properties of the water treatment agent to different quality can not be reflected；Limit carbonate precipitation method, it is to be directed to different circulations
The concentration process of water water quality and approximate simulation recirculated cooling water is tested, but this method can only reflect calcium bicarbonate heating condition
Under fouling condition, for the promotion fouling under aeration condition, a situation arises to detect, and limit carbonate precipitation method
Test period is grown, and the ordinary test time needs to continue 12h, wherein light constant temperature standing time just for 10h, during need to disappear
Consume a large amount of electric energy to be heated, and testing result and the onsite application effect gap of water treatment agent are larger, influence it for water
Inorganic agent instructs application.
The content of the invention
To solve the deficiencies in the prior art, the invention provides a kind of measure side of water treatment agent scale-inhibiting properties
Method, this method is by being specifically concentrated by evaporation the enrichment stage of operation simulation recirculated cooling water running, to substantially speed up examination
Process is tested, shortens test period, and the testing result accuracy obtained is high, closer to live practical effect.
To achieve the above object, the assay method of water treatment agent scale-inhibiting properties of the invention：
It is to be added to water treatment agent to be evaluated in the circulating cooling make-up water water sample of field working conditions as test solution, in heated at constant temperature
And under vacuumized conditions, test solution boiling is promoted to be evaporated concentration, and mended in evaporating concentration process by being spaced replenishment cycles water
The mode of water water sample controls test solution amount to maintain the 1 ± 10% of test solution primary quantity, when the water that test solution evaporates reaches via water
Reach balance during the evaporated water that the default cycles of concentration K that inorganic agent determines is calculated, stop vacuumizing, continue constant temperature 1
Stopped operation after~2h, after test solution is cooled to room temperature, filter, detect the calcium ion concentration ρ of filtrate3；In conjunction with not adding water
The calcium ion concentration ρ that the circulating cooling make-up water water sample blank test of inorganic agent obtains2And the calcium ion concentration of circulating cooling make-up water water sample
ρ1,
By formula：
The scale inhibition performance of water treatment agent to be evaluated is calculated, for evaluating the scale-inhibiting properties of water treatment agent；
The temperature of the heated at constant temperature is the circulating water temperature of field working conditions.
The assay method of water treatment agent scale-inhibiting properties of the present invention, it is that aqueous phase is circulated to field working conditions to test solution heated at constant temperature
Under same temperature conditionss, while vacuumize process is carried out, so that test solution reaches fluidized state and is evaporated concentration, and evaporated
Journey keeps test solution amount to maintain the 1 ± 10% of test solution primary quantity in a manner of the replenishment cycles water moisturizing of interval, so as to simulate simultaneously
Promotion fouling condition in heat exchanger under the fouling condition of recirculated water concentration process and recirculated water aeration state, makes assay method
Trystate is extremely close with the running status of field working conditions recirculated water, to obtain the measure knot of high, the closer reality of accuracy
Fruit.
In the method for testing, accelerate concentration process by vacuumizing evaporation process, can significantly shorten test period, no
Only reduce experiment energy consumption, it is often more important that can provide for the onsite application of water treatment agent and fast and effectively instruct.When test solution steams
After shampoo amount reaches balance, stopping vacuumizes and continues constant temperature, so that water treatment agent has time enough to play scale-inhibiting properties, from
And the scale-inhibiting properties of detection accurate rate, more accurately reaction water treatment agent are improved, and more other assay methods can substantially reduce
Testing time.
As the restriction to aforesaid way, the assay method of water treatment agent scale-inhibiting properties comprises the following steps：
A, obtain and calculate data parameters：
A1, the calcium ion concentration ρ for determining circulating cooling make-up water water sample1, total alkalinity A；
A2, default cycles of concentration K is calculated as follows：
K=S/ (ρ1+ A),
In formula, S is to require the constant that determines according to water treatment agent characteristic and circulating cooling make-up water cycles of concentration, value 1100~
1300；
B, it is concentrated by evaporation experiment：
B1, test solution experiment：It is added to by the requirement of water treatment agent to be evaluated in circulating cooling make-up water water sample and is used as test solution,
By the circulating water temperature of test solution heated at constant temperature to field working conditions, vacuum extractor is then turned on, vacuum pressure is adjusted to making examination
The pressure that liquid just seethes with excitement, concentration is evaporated, the water that test solution evaporates is received, when reception amount often reaches quantitative, to test solution
Middle replenishment cycles water moisturizing water sample makes test solution amount maintain the 1 ± 10% of test solution primary quantity, water to be evaporated receive total amount reach by
Reach balance during the evaporated water that default cycles of concentration K is calculated, stop vacuumizing, stop behaviour after continuing 1~2h of constant temperature
Make, after test solution is cooled to room temperature, filtering, detection obtains the calcium ion concentration ρ of filtrate3；
B2, blank test：Using the progress of circulating cooling make-up water water sample and step b1 simultaneous test for not adding water treatment agent, obtain
To calcium ion concentration ρ2；
C, the scale inhibition performance η of water treatment agent to be evaluated is calculated as follows,
The scale-inhibiting properties of water treatment agent are evaluated according to scale inhibition performance.
Tested by the evaporation and concentration of the present invention, the calcium ion concentration experiment for respectively obtaining test solution and circulating cooling make-up water is tied
Fruit, in conjunction with the performance parameter of circulating cooling make-up water, by the way that specific scale inhibition performance of the water treatment agent for recirculated water is calculated, so as to
Scale-inhibiting properties are reacted exactly.In experiment is concentrated by evaporation, the operation of between-line spacing replenishment cycles water moisturizing is entered for test solution, with examination
Liquid steams water and often reaches the quantitative live operating mechanism for being used as supplement opportunity, more meeting recirculated water, makes measurement result close in fact
Border.The general values 1100 of constant S for calculating default cycles of concentration K, can also modify, such as 1200,1300.
As the restriction to aforesaid way, the step a1, according to GB/T15452-2009 measure circulating cooling make-up water water samples
Calcium ion concentration ρ1, the total alkalinity A according to GB/T15451-2006 measure circulating cooling make-up water water samples.
As the restriction to aforesaid way, the S values 1100.
As the restriction to aforesaid way, the step b2, test solution primary quantity is 500ml, and the reception amount of evaporation water often reaches
To 50ml into test solution replenishment cycles water moisturizing water sample 50ml.
As the restriction to aforesaid way, the step b2, evaporated water is calculated as follows by default cycles of concentration K：
K=V3/V0+1
In formula, V0Represent the test solution primary quantity of cubing；V3The evaporated water of cubing is represented, is also test solution
The evaporation water of cubing during off-test receives total amount.
Further limit circulating cooling make-up water water sample performance parameter examination criteria, quantitative parameter numerical value, and experiment in compared with
Grasped for convenience of the test solution primary quantity of operation, each evaporation water receiving amount and the experiment such as circulating cooling make-up water magnitude of recruitment, evaporated water
Work and calculating parameter, so that the method for testing of the present invention is more convenient for implementing.
Meanwhile present invention also offers a kind of measure device of water treatment agent scale-inhibiting properties, it includes：
Container for evaporation；
Electric heater, the electric heater are used to heat the container for evaporation；
Conduit, the tube at one end connect with the container for evaporation, and are provided with condenser on the conduit；
Condensed water container, the other end of the conduit is connected to, and is indicated in being provided with water on the condensed water container
Portion；
Filling pipe, one end of the filling pipe are communicated in the container for evaporation, the other end connection circulation of the filling pipe
Water moisturizing water source, and in being serially connected with electrically-controlled valve on the filling pipe；
Liquid level sensor, in the container for evaporation；
Temperature sensor, in the container for evaporation；
Vacuum unit, the vacuum unit are connected by exhaust tube with the condensed water container, and in the pumping
Vacuum breaker is serially connected with pipe；
Controller, it is connected with the liquid level sensor, the temperature sensor, the electrically-controlled valve and the heater
Connect.
As the restriction to aforesaid way, the condensed water container is transparent vessel, and the water marking part is located at institute
State the graduation mark on condensed water container.
As the restriction to aforesaid way, the condenser includes being set in the supravasal cooling jacket, in described
The both ends of cooling jacket are respectively arranged with cooling water inlet pipe and cooling water outlet tube, and the cooling water outlet tube is close to the evaporation
Container side is arranged.
As the restriction to aforesaid way, the vacuum unit is water ring vacuum pump.
In summary, using technical scheme, the assay method of the water treatment agent scale-inhibiting properties of acquisition, is to pass through
Contrast is carried out with the moisturizing of blank cycle water to the test solution for adding water treatment agent and is concentrated by evaporation experiment, in conjunction with circulating cooling make-up water performance
Parameter, the scale inhibition performance of water treatment agent is obtained, evaluate scale-inhibiting properties.Be concentrated by evaporation experiment be to test solution heated at constant temperature to scene
Under Operation mode cycle water identical temperature conditionss, while carry out vacuumize process so that test solution reach fluidized state be evaporated it is dense
Contracting, and keep test solution amount to maintain the 1 ± 10% of test solution primary quantity in a manner of the replenishment cycles water moisturizing of interval in evaporation process,
So as to simulate the promotion fouling condition in heat exchanger under the fouling condition of recirculated water concentration process and recirculated water aeration state simultaneously,
Make the trystate of assay method extremely close with the running status of field working conditions recirculated water, it is high, closer real to obtain accuracy
The measurement result on border, and test period is short, can provide for the onsite application of water treatment agent and fast and effectively instruct, and compared with
Other assay methods can substantially reduce testing time.The measure device of the water treatment agent scale-inhibiting properties of the present invention, conventional true
On the basis of empty distillation equipment, add the quantitative control unit to test solution evaporation water reception amount and test solution magnitude of recruitment, beneficial to pair
Assay method is precisely controlled, the Effec-tive Function of assay method more conducively of the present invention.
Brief description of the drawings
Below in conjunction with the accompanying drawings and embodiment is made further to describe in detail to the present invention：
Fig. 1 is the structural representation of the measure device of the embodiment of the present invention；
Embodiment
Embodiment
The measure device of the water treatment agent scale-inhibiting properties of the present embodiment, as shown in Figure 1, it includes being used for the steaming for containing water sample
Container 1 is sent out, the electric heater 2 for being heated to container for evaporation 1 is provided with the bottom of container for evaporation 1, container for evaporation 1
Opening is closed by plunger, and conduit 3 and benefit that one end is communicated in container for evaporation 1 are also further provided with container for evaporation 1
Water pipe 9.Wherein, conduit 3 is used for the export of vapor in container for evaporation 1, is provided with conduit 3 for the water in conduit 3
The condenser 4 that steam is condensed, and relative to container for evaporation 1, condensed water container 5 is then connected with the other end of conduit 3, it is cold
Condensate container 5 is used to contain condensed distilled water.
In the present embodiment, flowed after for the benefit of water vapour condensation along conduit 3 into condensed water container 5, conduit 3 is being arranged
On, its along to direction of condensed water container 5 diagonally downward to set, and condenser 4 it is also preferred that be this that be arranged on conduit 3
Rake office.And the condenser 4 of the present embodiment is specifically made up of the cooling jacket being sleeved on conduit 3, in the cooling water
The both ends of set are respectively arranged with cooling water inlet pipe and cooling water outlet tube, meanwhile, in order to ensure that the condensation to vapor in conduit 3 is imitated
Fruit, cooling water outlet tube positioned at the one end of condenser 4 it is as shown in Figure 1 be to be arranged close to the side of container for evaporation 1.
Cooling water inlet pipe and cooling water outlet tube in the present embodiment on condenser 4 are connected to the cooling water with relatively low water temperature
In water route, with can by low-temperature cooling water in condenser 4 flow through it is cold to the vapor in conduit 3 cool
But.With the identical of container for evaporation 1, the opening of condensed water container 5 is also closed by plunger in the present embodiment, and in the condensation water capacity
The vacuum unit for condensed water container 5 vacuumize operation is connected with device 5 also by exhaust tube 7.
Vacuum unit can specifically use water ring vacuum pump 6 in the present embodiment, and be also arranged in series on exhaust tube 7
The vacuum breaker 8 that vacuum during to vacuumizing is adjusted.Water ring vacuum pump 6 uses existing portion with vacuum breaker 8
Part.And further it is additionally provided with the present embodiment on condensed water container 5 for identifying condensed distilled water water
Water marking part, now specifically may be such that condensed water container 5 using as glass material transparent vessel, corresponding water mark
It can be then the graduation mark being arranged on condensed water container 5 to show portion.Condensed water can intuitively and clearly be picked out by graduation mark
Water in container 5.
In the present embodiment, the other end of the filling pipe 9 connected in foregoing same and container for evaporation 1 is externally connected to follow
In ring water moisturizing water route, and also concatenation is disposed with electrically-controlled valve 10 on filling pipe 9, outside thus when electrically-controlled valve 10 is opened
The circulating cooling make-up water in water route can enter in container for evaporation 1 via filling pipe 9, with the moisturizing into container for evaporation 1, when electrically-controlled valve 10
Moisturizing can be stopped after closing.In addition, temperature sensor 12 and liquid level sensor 11 are additionally provided with container for evaporation 1, and
The measure device of the present embodiment is also equipped with and temperature sensor 12, liquid level sensor 11 and foregoing electric heater 2 and automatically controlled
The joining controller 100 of valve 10.
Temperature sensor 12 is used to detect the temperature of the water sample in container for evaporation 1 in real time, to be controlled by controller 100
The operation of electric heater 2 processed, so as to may be such that the temperature in container for evaporation 1 maintains the state for keeping water sample persistently to evaporate.Liquid
Level sensor 12 is then used for the liquid level for detecting the water sample in container for evaporation 1 in real time, with the water sample in container for evaporation 1 because constantly steaming
Hair and liquid level can control electrically-controlled valve 10 to open, with the moisturizing into container for evaporation 1 when dropping to a certain degree by controller 100.
It should be noted that metering for water in condensed water container 5 in the present embodiment, and for container for evaporation 1
The metering of middle water is carried out with volume unit, and thus, the water in condensed water container 5 can be carried out by graduation mark thereon
Read, and the water in container for evaporation 1 then can be by detection of the liquid level sensor 11 to liquid level in container for evaporation 1, then correspond to
The specification of container for evaporation 1 is got by linear relationship conversion between the two, certainly in conversion it should be noted that the TEMP set
Influenceed caused by device 12 and liquid level sensor 11.In addition, with the identical of condensed water container 5, the container for evaporation 1 of the present embodiment
Transparent glass material can be used, and graduation mark is set thereon, so that knowledge substantially can be carried out to the water in container for evaporation 1
Not.
The controller 100 of the present embodiment concretely control device such as existing single-chip microcomputer, PLC or integrated touch screen,
And controller 100 it is further be also configured as can to the temperature value in the container for evaporation 1 detected of temperature sensor 12, with
And the water value in the container for evaporation 1 corresponding to the liquid level of the detection of liquid level sensor 11 is shown.And the He of temperature sensor 12
Liquid level sensor 11 and electric heater 2 use existing part.
The use of the measure device of the present embodiment is specifically described as follows described in embodiment.
The method of water treatment agent scale-inhibiting properties comprises the following steps：
A, obtain and calculate data parameters：
A1, the calcium ion concentration ρ for determining circulating cooling make-up water water sample1, total alkalinity A；
Calcium ion concentration is according to GB/T15452-2009《The measure EDTA titration of calcium, magnesium ion in industrial circulating cooling water
Method》Specified in method be measured, i.e. calcium ion concentration ρ (with calcium carbonate), unit mg/L, be calculated as follows：
In formula：
V1--- during titration of calcium ions, the numerical value of the volume of EDTA standard liquids is consumed, unit is milliliter (ml)；
c1--- the exact value of the concentration of EDTA standard titration solutions, unit are mole every liter (mol/L)；
V --- the numerical value of the volume of institute's water sampling, unit are milliliter (ml)；
The numerical value of the molal weight of M --- calcium carbonate, unit are gram every mole (g/mol) (M=100.08).
Total alkalinity is according to GB/T15451-2006《The measure of industrial circulating cooling water total alkali and phenolphthalein alkalinity》Specified in
Method is measured, i.e. total alkalinity A (with calcium carbonate), unit mg/L, is calculated as follows：
V2--- the numerical value of the volume of Hydrochloric Standard Titration is consumed when being titrated to pH=4.5, unit is milliliter (ml)；
c2--- the numerical value of the actual concentrations of Hydrochloric Standard Titration, unit are mole every liter (mol/L)；
V --- the numerical value of the volume of institute's water sampling, unit are milliliter (ml)；
The numerical value of the molal weight of M --- calcium carbonate, unit are gram every mole (g/mol) (M=100.08).
A2, default cycles of concentration K is calculated as follows：
K=S/ (ρ1+A)
In formula, S is to require the constant that determines according to water treatment agent characteristic and circulating cooling make-up water cycles of concentration, value 1100~
1300, S value standards are as follows：
Work as ρ1During+A≤350, S takes 1100；
As 350 ＜ ρ1During+A ＜ 450, S takes 1200；
Work as ρ1During+A >=450, S takes 1300.
B, it is concentrated by evaporation experiment：Concentration test is evaporated in said determination device；
B1, test solution experiment：
B1-1, it is added to by the requirement of water treatment agent to be evaluated in circulating cooling make-up water water sample and is used as test solution, correct amount
Take 500ml test solutions to be injected into by charging hopper in 1L container for evaporation, open cooling water and electric heater, adjust electric heater
It is consistent with the circulating water temperature of field working conditions to temperature detection reading to test solution heated at constant temperature, and keeping temperature meter deviation of reading
In the range of ± 0.5 DEG C；
B1-2, vacuum unit is opened, vacuum pressure is adjusted to the pressure for making test solution just seethe with excitement, is evaporated dense
Contracting；The vacuum pressure value is compareed with reference to shown in following table table 1 with temperature value；
Table 1, saturated vapour pressure and the temperature table of comparisons
| Pressure/Mpa | Temperature/DEG C | Pressure/Mpa | Temperature/DEG C |
| 0.0032 | 25 | 0.0200 | 60 |
| 0.0043 | 30 | 0.0250 | 65 |
| 0.0056 | 35 | 0.0320 | 70 |
| 0.0074 | 40 | 0.0390 | 75 |
| 0.0096 | 45 | 0.0480 | 80 |
| 0.0124 | 50 | 0.0580 | 85 |
| 0.0158 | 55 | 0.0700 | 90 |
B1-3, the water evaporated in condensed water container reception test solution, when reception amount often reaches quantitative, are supplemented into test solution
Circulating cooling make-up water water sample makes test solution amount maintain the 1 ± 10% of test solution primary quantity, even if also test solution amount maintains test solution primary quantity
90%~110% in the range of, for convenience of operating, when condensed water container often receives 50ml volume of water, just open electrically-controlled valve to steaming
Supplement 50ml circulating cooling make-up water water samples in container are sent out, water to be evaporated receives total amount and reaches what is be calculated by presetting cycles of concentration K
Reach balance during evaporated water；
Calculation formula：K=V3/V0+1
In formula, V0Represent the test solution primary quantity of cubing；V3The evaporated water of cubing is represented, is also test solution
The evaporation water of cubing during off-test receives total amount；
Stop vacuumizing after b1-4, balance, continue 1~2h of constant temperature, then stop operation, after test solution is cooled to room temperature,
Filtered with middling speed quantitative filter paper, detect the calcium ion concentration ρ of filtrate3；
B2, blank test：Using the progress of circulating cooling make-up water water sample and step b1 simultaneous test for not adding water treatment agent, obtain
To calcium ion concentration ρ2；
Two sets of measure devices of selection, while carry out test solution experiment and blank test；
C, the scale inhibition performance η of water treatment agent to be evaluated is calculated as follows,
And it is measurement result to take the arithmetic mean of instantaneous values of parallel determinations, the absolute difference of parallel determinations is not more than
5%.The scale-inhibiting properties of water treatment agent are evaluated according to scale inhibition performance, scale inhibition performance is higher, then the scale-inhibiting properties of the water treatment agent are better.
Three classes are often evaluated with scale inhibition water treatment agent GA, KB, LC scale-inhibiting properties using said determination method, it is optional
Take GA, KB, LC be respectively without it is Phosphorus, containing Phosphorus and low-phosphorous class antisludging agent, three kinds of water treatment agents of measure are respectively in two kinds of recirculated waters
Scale inhibition performance in moisturizing water sample, two kinds of circulating cooling make-up water water samples are respectively to be derived from certain coke-oven plant's recirculated cooling water moisturizing water sample I
Be derived from certain Circulating Cooling Water of Power Plant moisturizing water sample II, the water quality detection parameter of water sample see the table below table 2.
The water quality parameter of table 2, two kind of circulating cooling make-up water water sample
To the measure of three kinds of water treatment agent GA, KB, LC scale-inhibiting properties, test parameters and measurement result are as shown in following table table 3.
Table 3, three kind of water treatment scale performance measurement table
The scale inhibition performance of each water treatment agent that assay method by the present invention obtains is as shown in following table table 4, and with passing through carbon
The scale inhibition performance for each water treatment agent that sour doped calcium method obtains and the calcium retention of onsite application water treatment agent Posterior circle water running enter
Row compares.
Table 4, the testing result table of comparisons
From the result of table 4, assay method test period of the invention is only 4h, and the test period of tosca method
For 12h, wherein light constant temperature, which is placed, just needs 10h, has fully demonstrated assay method of the present invention and has taken advantage short, that detection speed is fast；
The water treatment agent scale inhibition performance of the inventive method measure is approximate with the calcium retention of onsite application water treatment agent Posterior circle water running, says
Bright this method ensure that the accuracy of testing result by simulating concentration process, more excellent so as to pick out closer to reality
Water treatment agent.
In summary, the assay method of water treatment agent scale-inhibiting properties of the invention, because being changed by being concentrated by evaporation test simulation
Promotion fouling condition in hot device under the fouling condition of recirculated water concentration process and recirculated water aeration state, make trystate with showing
The running status of field Operation mode cycle water is extremely close, so as to obtain the measurement result of high, the closer reality of accuracy, and tests
Time is short, can provide for the onsite application of water treatment agent and fast and effectively instruct.The water treatment agent scale-inhibiting properties of the present invention
Device is determined, is precisely controlled beneficial to assay method, the Effec-tive Function of assay method more conducively of the present invention.
Claims (10)
- A kind of 1. assay method of water treatment agent scale-inhibiting properties, it is characterised in that：This method is added to water treatment agent to be evaluated in the circulating cooling make-up water water sample of field working conditions as test solution, in constant temperature plus Under heat and vacuumized conditions, test solution boiling is promoted to be evaporated concentration, and in evaporating concentration process by being spaced replenishment cycles water The mode of moisturizing water sample controls test solution amount to maintain the 1 ± 10% of test solution primary quantity, when the water that test solution evaporates reach via Reach balance during the evaporated water that the default cycles of concentration K that water treatment agent determines is calculated, stop vacuumizing, continue constant temperature Stopped operation after 1~2h, after test solution is cooled to room temperature, filter, detect the calcium ion concentration ρ of filtrate3；In conjunction with not adding water The calcium ion concentration ρ that the circulating cooling make-up water water sample blank test of inorganic agent obtains2And the calcium ion concentration of circulating cooling make-up water water sample ρ1,By formula：The scale inhibition performance of water treatment agent to be evaluated is calculated, for evaluating the scale-inhibiting properties of water treatment agent；The temperature of the heated at constant temperature is the circulating water temperature of field working conditions.
- 2. the assay method of water treatment agent scale-inhibiting properties according to claim 1, it is characterised in that：This method includes following Step：A, obtain and calculate data parameters：A1, the calcium ion concentration ρ for determining circulating cooling make-up water water sample1, total alkalinity A；A2, default cycles of concentration K is calculated as follows：K=S/ (ρ1+ A),In formula, S is to require the constant that determines according to water treatment agent characteristic and circulating cooling make-up water cycles of concentration, value 1100~ 1300；B, it is concentrated by evaporation experiment：B1, test solution experiment：It is added to by the requirement of water treatment agent to be evaluated in circulating cooling make-up water water sample and is used as test solution, will be tried Liquid heated at constant temperature is then turned on vacuum extractor to the circulating water temperature of field working conditions, and vacuum pressure is adjusted to making test solution firm The pressure seethed with excitement well, concentration is evaporated, receives the water that test solution evaporates, when reception amount often reaches quantitative, mended into test solution Filling circulating cooling make-up water water sample makes test solution amount maintain the 1 ± 10% of test solution primary quantity, and water to be evaporated receives total amount and reached by presetting Reach balance during the evaporated water that cycles of concentration K is calculated, stop vacuumizing, stop operation, treat after continuing 1~2h of constant temperature After test solution is cooled to room temperature, filtering, detection obtains the calcium ion concentration ρ of filtrate3；B2, blank test：Using the progress of circulating cooling make-up water water sample and step b1 simultaneous test for not adding water treatment agent, calcium is obtained Ion concentration ρ2；C, the scale inhibition performance η of water treatment agent to be evaluated is calculated as follows,<mrow> <mi>&eta;</mi> <mo>=</mo> <mfrac> <mrow> <msub> <mi>&rho;</mi> <mn>3</mn> </msub> <mo>-</mo> <msub> <mi>&rho;</mi> <mn>2</mn> </msub> </mrow> <mrow> <msub> <mi>&rho;</mi> <mn>1</mn> </msub> <mi>K</mi> <mo>-</mo> <msub> <mi>&rho;</mi> <mn>2</mn> </msub> </mrow> </mfrac> <mo>&times;</mo> <mn>100</mn> <mi>%</mi> <mo>,</mo> </mrow>The scale-inhibiting properties of water treatment agent are evaluated according to scale inhibition performance.
- 3. the assay method of water treatment agent scale-inhibiting properties according to claim 2, it is characterised in that：The step a1, according to According to the calcium ion concentration ρ of GB/T15452-2009 measure circulating cooling make-up water water samples1, according to GB/T15451-2006 measure recirculated waters The total alkalinity A of moisturizing water sample.
- 4. the assay method of water treatment agent scale-inhibiting properties according to claim 2, it is characterised in that：The S values 1100.
- 5. the assay method of water treatment agent scale-inhibiting properties according to claim 2, it is characterised in that：The step b2, examination Liquid primary quantity is 500ml, and the reception amount of evaporation water often reaches 50ml replenishment cycles water moisturizing water sample 50ml into test solution.
- 6. the assay method of water treatment agent scale-inhibiting properties according to claim 2, it is characterised in that：The step b2, by Evaporated water is calculated as follows in default cycles of concentration K：K=V3/V0+1In formula, V0Represent the test solution primary quantity of cubing；V3The evaporated water of cubing is represented, is also tested for test solution At the end of cubing evaporation water receive total amount.
- A kind of 7. measure device of water treatment agent scale-inhibiting properties, it is characterised in that including：Container for evaporation；Electric heater, the electric heater are used to heat the container for evaporation；Conduit, the tube at one end connect with the container for evaporation, and are provided with condenser on the conduit；Condensed water container, is connected to the other end of the conduit, and in being provided with water marking part on the condensed water container；Filling pipe, one end of the filling pipe are communicated in the container for evaporation, and the other end connection recirculated water of the filling pipe is mended Water water source, and in being serially connected with electrically-controlled valve on the filling pipe；Liquid level sensor, in the container for evaporation；Temperature sensor, in the container for evaporation；Vacuum unit, the vacuum unit are connected by exhaust tube with the condensed water container, and on the exhaust tube It is serially connected with vacuum breaker；Controller, it is connected with the liquid level sensor, the temperature sensor, the electrically-controlled valve and the heater.
- 8. the measure device of water treatment agent scale-inhibiting properties according to claim 7, it is characterised in that：The condensed water container For transparent vessel, the water marking part is the graduation mark on the condensed water container.
- 9. the measure device of water treatment agent scale-inhibiting properties according to claim 7, it is characterised in that：The condenser includes The supravasal cooling jacket is set in, be respectively arranged with cooling water inlet pipe in the both ends of the cooling jacket goes out with cooling water Pipe, and the cooling water outlet tube is arranged close to the container for evaporation side.
- 10. the measure device of water treatment agent scale-inhibiting properties according to claim 7, it is characterised in that：It is described to vacuumize list Member is water ring vacuum pump.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112683623A (en) * | 2020-12-31 | 2021-04-20 | 洛阳强龙实业有限公司 | Zinc-stabilizing agent performance evaluation method |
| CN113740505A (en) * | 2021-09-29 | 2021-12-03 | 西安热工研究院有限公司 | Rapid evaluation device and method for scale inhibition effect of circulating cooling water quality stabilizer |
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| CN102841114A (en) * | 2011-06-23 | 2012-12-26 | 中国石油化工股份有限公司 | Method for evaluating calcium carbonate scale prevention effect of water treatment agent |
| CN207396473U (en) * | 2017-11-16 | 2018-05-22 | 石家庄给源环保科技有限公司 | The measurement device of water treatment agent scale-inhibiting properties |
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| CN102841114A (en) * | 2011-06-23 | 2012-12-26 | 中国石油化工股份有限公司 | Method for evaluating calcium carbonate scale prevention effect of water treatment agent |
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| CN112683623A (en) * | 2020-12-31 | 2021-04-20 | 洛阳强龙实业有限公司 | Zinc-stabilizing agent performance evaluation method |
| CN113740505A (en) * | 2021-09-29 | 2021-12-03 | 西安热工研究院有限公司 | Rapid evaluation device and method for scale inhibition effect of circulating cooling water quality stabilizer |
| CN113740505B (en) * | 2021-09-29 | 2023-07-18 | 西安热工研究院有限公司 | Rapid evaluation device and method for scale inhibition effect of circulating cooling water quality stabilizer |
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