CN107304077A - A kind of corrosion-mitigation scale-inhibition sterilization composition and its application - Google Patents
A kind of corrosion-mitigation scale-inhibition sterilization composition and its application Download PDFInfo
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- CN107304077A CN107304077A CN201610248574.XA CN201610248574A CN107304077A CN 107304077 A CN107304077 A CN 107304077A CN 201610248574 A CN201610248574 A CN 201610248574A CN 107304077 A CN107304077 A CN 107304077A
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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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
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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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/105—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
Abstract
The present invention relates to water treatment field, disclose a kind of corrosion-mitigation scale-inhibition sterilization composition and its application, the composition contains water-soluble pink salt, homopolymer containing carboxylic acid group, hydroxycarboxylate and copolymer, the copolymer contains the construction unit provided by the methyl propane sulfonic acid of 2 acrylamido 2, on the basis of the total amount of the copolymer, the percentage by weight of the construction unit provided by the methyl propane sulfonic acid of 2 acrylamido 2 is more than 20%, wherein, the weight ratio of the water-soluble pink salt, homopolymer containing carboxylic acid group, hydroxycarboxylate and copolymer is 1:1‑20:1‑12:1 20, the weight of water-soluble pink salt is based on tin ion.The corrosion-mitigation scale-inhibition sterilization of the present invention has preferably inhibition, scale inhibition and bactericidal property concurrently with composition, and dosage is relatively low when using.Moreover, the composition of the present invention is not phosphorous, environmental protection.
Description
Technical field
The present invention relates to water treatment field, in particular it relates to a kind of corrosion-mitigation scale-inhibition sterilization composition and its
Application in circulating water cooling treatment.
Background technology
The problem of recirculated cooling water longtime running can bring corrosion and scaling and bacterial growth, it is necessary to throw respectively
Plus corrosion inhibiter, antisludging agent and bactericide.Nontoxic, the efficient multifunctional water treating agent of research is medicament research
The direction of exploitation.Most petroleum chemical enterprise's application is all compound corrosion inhibiting and descaling agent.Using more
Extensive formula (is made up of) phosphorus system Quadrafos, polycarboxylic acids and copolymer, zinc salt etc., full stress-strain
It is (being made up of organic phospho acid, polycarboxylic acids and copolymer, azole compounds with or without zinc salt) etc..
During adding water treatment agent, the compatibility issues of anti-incrustation corrosion inhibitor and bactericide are commonly present.Recirculated water
Conventional chlorine series bactericidal agent has oxidation to many anti-incrustation corrosion inhibitors, so as to reduce corrosion-mitigation scale-inhibition effect
Really.
At present, the conventional corrosion inhibiting and descaling agent of domestic and international circulating water cooling treatment is almost phosphorus system water treatment agent entirely
Compound prescription.However, with the raising of global environmental protection and awareness of safety, many countries and regions are all
The measure for prohibiting phosphorus and limit phosphorus is taken successively.Therefore, low-phosphorous, without phosphorus corrosion inhibiting and descaling agent turns into the country
The developing direction of outer water treatment agent.
CN102578088A discloses a kind of compound drug that there is sterilization corrosion-mitigation scale-inhibition to act on, including poly-
Amide-type, quaternary ammonium salt, organic phospho acid polymer, inorganic salts, water, the compound drug stability is good,
Easily compound, simple to operate, cost is low, and low toxicity is nuisanceless, belongs to environmental protection water treatment agent.But
The medicament contains substantial amounts of organic phosphine and dosage is larger.
CN102730851A disclose it is a kind of have concurrently corrosion-mitigation scale-inhibition and kill livestock effect water treatment agent and its
Preparation method.The water treatment agent is poly-epoxy succinic acid/Bronopol copolymer, and the copolymer is not phosphorous,
It is biodegradable, and because the presence of oxidisability bromine atoms also has certain effect of killing livestock.But should
The corrosion mitigating effect of medicament is general, and bactericidal effect is also poor.
Therefore, research and development with preferable inhibition, scale inhibition and bactericidal property, use when relatively low low-phosphorous of dosage
(or without phosphorus) water treatment agent has great importance.
The content of the invention
The invention aims to overcome existing low-phosphorous (or without phosphorus) water treatment agent to be difficult to be provided simultaneously with
Preferable inhibition, scale inhibition and the not enough of bactericidal property have preferable inhibition, scale inhibition and bactericidal properties there is provided one kind
Dosage relatively low low-phosphorous (or without phosphorus) water treatment agent when can, use.
The present inventor has found that water-soluble pink salt has obvious cooperate with hydroxycarboxylate under study for action
Corrosion inhibition, copolymer can play a part of stable tin ion, in addition, water-soluble pink salt hydrolysis generation
Stannic hydroxide there is bactericidal action, with obtaining having concurrently corrosion-mitigation scale-inhibition sterilization after the compounding of homopolymer containing carboxylic acid group
The medicament of performance.Killed using the corrosion-mitigation scale-inhibition sterilization with compositions-treated recirculated cooling water without adding in addition
Microbial inoculum, or only need to add a small amount of bactericide, with regard to good corrosion-mitigation scale-inhibition bactericidal effect can be reached.
Therefore, to achieve these goals, the invention provides a kind of corrosion-mitigation scale-inhibition sterilization composition,
Said composition contains water-soluble pink salt, homopolymer containing carboxylic acid group, hydroxycarboxylate and copolymer, described common
Polymers contains the construction unit provided by 2- acrylamide-2-methylpro panesulfonic acids, with the total of the copolymer
On the basis of amount, the percentage by weight of the construction unit provided by 2- acrylamide-2-methylpro panesulfonic acids exists
More than 20%, wherein, the water-soluble pink salt, homopolymer containing carboxylic acid group, hydroxycarboxylate and copolymer
Weight ratio be 1:1-20:1-12:1-20, the weight of water-soluble pink salt is based on tin ion.
In addition, the application present invention also offers above-mentioned composition in processing cycle cooling water.
The corrosion-mitigation scale-inhibition sterilization of the present invention has preferably inhibition, scale inhibition and bactericidal property concurrently with composition, makes
Used time dosage is relatively low.Moreover, the composition of the present invention is not phosphorous, environmental protection.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Embodiment
The embodiment to the present invention is described in detail below.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In the present invention, in the case where not making opposite explanation, the weight of various materials is according to effective dose
(or butt amount) is counted, and such as the amount of polymer (including various homopolymers and copolymer) is with its butt amount
Meter.
Corrosion-mitigation scale-inhibition sterilization composition that the present invention is provided it is (preferably not phosphorous) containing water-soluble pink salt,
Homopolymer containing carboxylic acid group, hydroxycarboxylate and copolymer, the copolymer contain by 2- acrylamidos -2-
The construction unit that methyl propane sulfonic acid is provided, on the basis of the total amount of the copolymer, by 2- acrylamidos
- 2- methyl propane sulfonic acids provide construction unit percentage by weight more than 20%, wherein, the water solubility
Pink salt, homopolymer containing carboxylic acid group, the weight ratio of hydroxycarboxylate and copolymer are 1:(1-20):(1-12):
(1-20), the weight of water-soluble pink salt is based on tin ion.
Preferably, the weight ratio of the water-soluble pink salt and the homopolymer containing carboxylic acid group is 1:(4-16) (such as
1:4、1:5、1:5.5、1:8、1:10、1:11、1:12、1:14、1:15、1:Between 16 or aforementioned value
Arbitrary value)；And/or the water-soluble pink salt and the weight ratio of hydroxycarboxylate are 1:(2-8) (such as 1:2、
1:3、1:4、1:5、1:6、1:7、1:Arbitrary value between 8 or aforementioned value)；And/or the water solubility
The weight of pink salt and copolymer than for weight ratio be 1:(4-16) (such as 1:4、1:5、1:6、1:8、1:10、
1:11、1:12、1:14、1:15、1:Arbitrary value between 16 or aforementioned value).
Wherein, the content between each above-mentioned composition can be with identical or different.Preferably, the composition
It is made up of mentioned component.
According to the present invention, the water-soluble pink salt can be the common water-soluble pink salt in this area (at 20 DEG C
Solubility >=1g/100g water).Preferably, the water-soluble pink salt is selected from stannic chloride, stannous chloride, sulphur
At least one of sour tin and nitric acid tin.
According to the present invention, the homopolymer containing carboxylic acid group can be the common various without phosphorus homopolymers in this area
(such as (carbon number is 3-10 (such as C to unsaturated carboxylic acid3、C4、C5、C6、C7、C8、C9Or C10))
Without phosphorus homopolymer), homopolymer of the preferable weight-average molecular weight in the range of 400-5000.It is highly preferred that
The homopolymer containing carboxylic acid group is at least one in poly-aspartate, poly-epoxy succinic acid and polyacrylic acid
Kind.Water-soluble pink salt has good synergy with homopolymer containing carboxylic acid group, in processing cycle cooling water
When result in excellent anticorrosion-antiscaling effect.
According to the present invention, hydroxycarboxylate's (saturation) can be the common hydroxyl carboxylic acid in this area
Metal salt (such as sodium salt and/or sylvite), such as C3-C10(such as C3、C4、C5、C6、C7、C8、C9
Or C10) saturated hydroxy carboxylic acid salt.Under preferable case, the hydroxycarboxylate is selected from gluconic acid
Sodium, sodium tartrate, sodium citrate, sodium lactate, natrium malicum, K-IAO, potassium tartrate, lemon
At least one of lemon acid potassium, potassium lactate and potassium malate.
According to the present invention, on the basis of the total amount of the copolymer, by 2- acrylamido -2- methyl-prop sulphurs
The percentage by weight for the construction unit that acid is provided is more than 20% (preferably 20-30%).The copolymer contains
The percentage by weight of some other structures units (preferably 70-80%) below 80%.
Preferably, Limiting Viscosity of the copolymer at 30 DEG C is that 0.06-0.1dl/g (is preferably
0.07-0.08dl/g)。
According to the present invention, as long as the copolymer contains what is provided by 2- acrylamide-2-methylpro panesulfonic acids
Construction unit, the other structures unit contained to it has no particular limits, can be normal by this area
The various monomers for being used to prepare water treatment agent seen are provided.Preferably, other knots that the copolymer contains
Structure unit (being not 2- acrylamide-2-methylpro panesulfonic acids) is by unsaturated organic acid, unsaturated organic acid
At least one of salt, unsaturated organic acid acid anhydride, unsaturated amides and unsaturated organic acid ester or at least
Two kinds of offers.
The unsaturated organic acid is preferably acrylic acid, maleic acid and C2-C10Unsaturated sulfonic acid in extremely
Few one kind.The C2-C10Unsaturated sulfonic acid can be various conventional unsaturated sulfonic acids, and except
Outside alkyl, alkenyl and sulfonic group, phenyl, amide groups etc., the C can also be contained2-C10Insatiable hunger
For example can be styrene sulfonic acid, allyl sulphonic acid, vinyl sulfonic acid and 2- methyl -2'- acryloyls with sulfonic acid
At least one of amido propane sulfonic acid etc..
The salt of the unsaturated organic acid can be salt (such as sodium salt and/or potassium of above-mentioned unsaturated organic acid
Salt).
The unsaturated organic acid acid anhydride is the acid anhydrides (such as maleic anhydride) of above-mentioned unsaturated organic acid.
The unsaturated amides can for above-mentioned unsaturated organic acid formation acid amides, such as acrylamide and/
Or Methacrylamide.
The unsaturated organic acid ester is ester (such as acrylate (such as acrylic acid of above-mentioned unsaturated organic acid
C1-C8(C1、C2、C3、C4、C5、C6、C7Or C8) ester), such as methyl acrylate or acrylic acid
Hydroxypropyl acrylate).
It is highly preferred that the other structures unit that the copolymer contains is by acrylic acid, maleic anhydride, propylene
Acid amides, Methacrylamide, styrene sulfonic acid, SSS, methyl acrylate, acrylic acid second
At least one of ester, hydroxypropyl acrylate or at least two offers.
It is further preferred that the other structures unit that contains of the copolymer by acrylic acid, acrylamide,
Acrylic acid and acrylamide, acrylic acid and methyl acrylate, acrylic acid and ethyl acrylate, acrylic acid and
Hydroxypropyl acrylate, acrylic acid and maleic anhydride, acrylic acid and styrene sulfonic acid, acrylic acid and styrene
Sodium sulfonate or acrylamide and Methacrylamide are provided.
In practical application, can such as be pressed using the corrosion-mitigation scale-inhibition sterilization composition is preceding prepared
Added after according to aforementioned formula, each component is mixed in recirculated cooling water；Can also be by each component according to foregoing
Formula is directly added into recirculated cooling water without blend step.In order to prevent water-soluble pink salt from occurring water
Solve and influence the corrosion-mitigation scale-inhibition bactericidal effect of composition, under preferable case, will first contain carboxylic acid group's homopolymer,
Hydroxycarboxylate and copolymer are added in recirculated cooling water, add water-soluble pink salt, similarly, to containing
The addition sequence of carboxylic acid group's homopolymer, hydroxycarboxylate and copolymer is not limited.In actual use,
Effective dosage (weight in terms of butt) of the copolymer can be 2-10mg/L.
Present invention also offers application of the above-mentioned composition in processing cycle cooling water.The composition
Consumption is preferably 6.5-28mg/L recirculated waters, more preferably 10.5-21mg/L recirculated waters.
The present invention will be described in detail by way of examples below.
In following examples, poly-aspartate (weight average molecular weight is 2000), poly-epoxy succinic acid (weight
Average molecular weight be 1000), that polyacrylic acid (weight average molecular weight is 3000), copolymer are purchased from Shandong is safe
With water process Science and Technology Co., Ltd..
In following examples, the water quality for testing raw water is as shown in table 1.Wherein Ca2+, total alkalinity and total hard
Degree is with CaCO3Meter, the assay method of water quality is with reference to production department of China Petrochemical Corporation and development division
Write《Cool down water analysis and test method》(1993, information centre of Anqing general petrochemical works went out
Version).
Table 1
Test case 1
The stability of copolymer is evaluated in accordance with the following methods.
Distilled water is taken to prepare Ca2+Concentration is 250mg/L, basicity is 250mg/L and tin ion is 5mg/L
Test water, add copolymer (1-8) according to table 2,10 stood in 80 ± 1 DEG C of waters bath with thermostatic control small
When, the concentration (being measured by potassium dichromate method) of remaining tin ion in sampling analysis water, while doing blank
Sample, and calculate steady tin rate.Steady tin rate is higher, illustrates that stability of the pink salt in water is better, illustrates copolymerization
The performance of the stable pink salt of thing is more excellent.
Surely tin rate calculation formula is：Steady tin rate=(C-C0)/(C1-C0) × 100%
C：Survey the concentration (mg/L) of tin ion
C0：The concentration (mg/L) of the tin ion of blank sample
C1：The concentration (mg/L) of tin ion in raw water
Table 2
The 2- acrylamide-2-methylpro panesulfonic acids containing specified quantitative are carried it can be seen from the result of the test of table 2
The copolymer of the construction unit of confession has good stabilization to pink salt, far superior to other copolymers.
Embodiment 1-4
According to shown in table 3 toward adding medicament in test water and carry out scale inhibition, inhibition and bactericidal property test,
Specific method of testing is as follows.* mg/L described in table 3 represent effectively (butt) content, and pink salt is pressed
According to tin ion meter.
The evaluation of scale-inhibiting properties
Medicament is added into test water, in being concentrated by evaporation in 80 ± 1 DEG C of waters bath with thermostatic control, to cycles of concentration 5
Times, residue Ca in sampling analysis water2+Concentration, while doing blank sample, and calculate scale inhibition performance.Scale inhibition performance
Calculation formula be：Scale inhibition performance=(C-C0)/(nC1-C0) × 100%, wherein,
C：Residue Ca in water2+Concentration (mg/L)
C0：The Ca of blank sample2+Concentration (mg/L)
C1：Ca in raw water2+Concentration (mg/L)
n：Cycles of concentration
The evaluation of corrosion inhibition
20# quality carbon steel test pieces are fixed on lacing film instrument, is put into and is added according to each embodiment or comparative example
In the test water of medicament (experiment raw water concentrates 5 times and obtained, uncomfortable pH value), steady temperature is
40 ± 1 DEG C, it is that 75rpm rotates 72h to keep rotating speed, and the weight of test piece before and after record experiment calculates average
Corrosion rate (F).PH value is not adjusted in process of the test.The calculation formula of average corrosion rate (F)
For：F=(C × △ W)/(A × T × ρ), wherein,
C：Computational constant, during with mm/a (millimeter/year) for unit, C=8.76 × 107
△W：The corrosion weight loss (g) of test specimen
A：Area (the cm of test specimen2)
T：The corrosion test time (h)
ρ：Density (the kg/m of material for test3)
The measure of bactericidal property
The assay method of medicament disinfecting performance is compiled with reference to production department of China Petrochemical Corporation and development division
System《Cool down water analysis and test method》In《The static sterilization test of heterotroph》Regulation.
Table 3
Corrosion-mitigation scale-inhibition sterilization of the invention is had concurrently with composition from the results shown in Table 3 preferably delays
Erosion, scale inhibition and bactericidal property.
Comparative example 1
Medicament is added in the way of embodiment 1, unlike, copolymer 1 is copolymerized thing 6 and replaced,
It is 0.086mm/a, different time (1h, 4h, 8h, 12h and 24h) that scale inhibition performance, which is measured, for 62.5%, F
Sterilizing rate be respectively 82.1%, 77.4%, 58.0%, 49.3% and 33.5%.
Comparative example 2
Medicament is added in the way of embodiment 1, unlike, copolymer 1 is copolymerized thing 7 and replaced,
It is 0.090mm/a that scale inhibition performance, which is measured, for 60.2%, F, different time (1h, 4h, 8h, 12h and
Sterilizing rate 24h) is respectively 81.1%, 74.6%, 55.9%, 47.3% and 28.2%.
Embodiment 5
For the scene of simulating, dynamic analog test has been carried out.Dynamic analog test method presses middle Chinese
People republic chemical industry standard HG/T2160-91 is carried out, and control parameter is as follows.
Water quality：Raw water 1 is tested, 1 is shown in Table.
Cycles of concentration：The B towers 4.0 ± 0.2 of A towers 4.0 ± 0.2
pH：A towers control 8.0 ± 0.2 B towers control 8.0 ± 0.2
Flow velocity：1.0m/s
Medicament：
A towers：It is that 40 weight % poly-aspartate, 15g solid contents are 40 to weigh 5g solid contents
Weight % poly-epoxy succinic acid, 2g sodium gluconates, the copolymerization that 26.7g solid contents are 30 weight %
Thing 1, is dissolved in 49.8g water, is eventually adding 1.5g Tin tetrachloride pentahydrates, it is fully dissolved,
Shake up, that is, the 100g medicaments of preparation needed for obtaining.
When being added with the medicament prepared by 100mg/L drug concentration into water, poly- asparagus fern in water
Propylhomoserin, poly-epoxy succinic acid, sodium gluconate, copolymer 1, the valid density difference of tin ion
For 2mg/L, 6mg/L, 2mg/L, 8mg/L and 0.5mg/L.
B towers：It is that 40 weight % poly-epoxy succinic acid, 26.7g solid contents are to weigh 10g solid contents
30 weight % polyacrylic acid (Limiting Viscosity is 0.072dl/g at 30 DEG C), 33.3g solid contents is 30
Weight % copolymer 8, is dissolved in 24.1g water, is eventually adding 5.9g Tin tetrachloride pentahydrates,
It is fully dissolved, shake up, that is, the 100g medicaments of preparation needed for obtaining.
When being added with the medicament prepared by 100mg/L drug concentration into water, polycyclic oxygen in water
Butanedioic acid, polyacrylic acid, copolymer 8, the valid density of tin ion be respectively 4mg/L, 6mg/L,
10mg/L and 2mg/L.
Inlet temperature：32 ± 1 DEG C of temperature difference：10℃
Heterotroph monitoring result is shown in Table 4 during dynamic analog test, and test tube the results are shown in Table 5.
Table 4
Table 5
Standard GB/T 50050-95《Code for design of industrial recirculating cooling water treatment》3.1.6 middle regulation,
The corrosion rate of the carbon steel tube wall of open type system is less than or equal to 0.125mm/a；Sinopec is total
What production department of company and development division were worked out《Cool down water analysis and test method》In《The small-sized simulation of laboratory
Test method(s)》The corrosion rate for providing carbon steel is " fine " level between 0-0.028mm/a,
It is " good " level between 0.028-0.056mm/a, is " can allow " level in 0.056-0.070mm/a；
It is " fine " level that speed, which is adhered to, in 0-6mcm, is " good " level in 6-15mcm, in 15-20mcm
For " can allow " level.
As can be seen here, using the corrosion-mitigation scale-inhibition sterilization composition of the present invention, the corrosion rate of test tube is
0.020mm/a, reaches sinopec " fine level " standard, adheres to speed 5.0mcm, reaches " fine level "
Standard, better than comparative example.Result of the test shows that the corrosion-mitigation scale-inhibition sterilization of the present invention is integrated with composition
Performance is good, with good resistance calcium carbonate scale performance and corrosion inhibition, also with good bactericidal properties
Can, it is adaptable to the processing of recirculated cooling water.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited to above-mentioned reality
The detail in mode is applied, can be to technical side of the invention in the range of the technology design of the present invention
Case carries out a variety of simple variants, and these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not
The repetition wanted, the present invention no longer separately illustrates to various possible combinations.
In addition, various embodiments of the present invention can be combined randomly, as long as its
Without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.
Claims (9)
1. a kind of corrosion-mitigation scale-inhibition sterilization composition, it is characterised in that said composition contains water-soluble tin
Salt, homopolymer containing carboxylic acid group, hydroxycarboxylate and copolymer, the copolymer contain by 2- acrylamides
The construction unit that base -2- methyl propane sulfonic acids are provided, on the basis of the total amount of the copolymer, by 2- acryloyls
Amido -2- methyl propane sulfonic acids provide construction unit percentage by weight more than 20%, wherein, the water
Dissolubility pink salt, homopolymer containing carboxylic acid group, the weight ratio of hydroxycarboxylate and copolymer are
1:1-20:1-12:1-20, the weight of water-soluble pink salt is based on tin ion.
2. composition according to claim 1, wherein, the water-soluble pink salt, containing carboxylic acid group
The weight ratio of homopolymer, hydroxycarboxylate and copolymer is 1:4-16:2-8:4-16.
3. composition according to claim 1 or 2, wherein, the water-soluble pink salt is selected from chlorine
Change at least one of tin, stannous chloride, STANNOUS SULPHATE CRYSTALLINE and nitric acid tin.
4. composition according to claim 1 or 2, wherein, the homopolymer containing carboxylic acid group is
C3-C10The homopolymer of unsaturated carboxylic acid, preferably poly-aspartate, poly-epoxy succinic acid and polyacrylic acid
At least one of, the weight average molecular weight of the homopolymer containing carboxylic acid group is preferably 400-5000.
5. composition according to claim 1 or 2, wherein, the hydroxycarboxylate is C3-C10
Saturated hydroxy carboxylic acid salt, it is preferable that the hydroxycarboxylate be selected from sodium gluconate, sodium tartrate,
Sodium citrate, sodium lactate, natrium malicum, K-IAO, potassium tartrate, potassium citrate, potassium lactate
At least one of with potassium malate.
6. composition according to claim 1 or 2, wherein, the copolymer is at 30 DEG C
Limiting Viscosity is 0.06-0.1dl/g.
7. the composition according to claim 1,2 or 6, wherein, the copolymer contain its
His construction unit is by unsaturated organic acid, the salt of unsaturated organic acid, unsaturated organic acid acid anhydride, unsaturation
At least one of acid amides and unsaturated organic acid ester or at least two offers；
Preferably, the other structures unit that the copolymer contains is by acrylic acid, maleic anhydride, acryloyl
Amine, Methacrylamide, styrene sulfonic acid, SSS, methyl acrylate, ethyl acrylate,
At least one of hydroxypropyl acrylate or at least two offers；
It is highly preferred that the other structures unit that the copolymer contains is by acrylic acid, acrylamide, propylene
Acid and acrylamide, acrylic acid and methyl acrylate, acrylic acid and ethyl acrylate, acrylic acid and propylene
Sour hydroxypropyl acrylate, acrylic acid and maleic anhydride, acrylic acid and styrene sulfonic acid, acrylic acid and styrene sulfonic acid
Sodium or acrylamide and Methacrylamide are provided.
8. application of the composition in processing cycle cooling water in claim 1-7 described in any one.
9. application according to claim 8, wherein, the consumption of the composition is 6.5-28mg/L
Recirculated water, preferably 10.5-21mg/L recirculated waters.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052673A (en) * | 2018-07-26 | 2018-12-21 | 锐达工业科技（南京）有限公司 | A kind of recirculated water corrosion inhibiting and descaling agent and preparation method thereof |
| CN110963588A (en) * | 2018-09-28 | 2020-04-07 | 中国石油化工股份有限公司 | Non-phosphorus composite corrosion inhibitor and application thereof in medium and hard water |
| CN110963587A (en) * | 2018-09-28 | 2020-04-07 | 中国石油化工股份有限公司 | Non-phosphorus composite corrosion inhibitor and application thereof in high hard water |
| CN110963585A (en) * | 2018-09-28 | 2020-04-07 | 中国石油化工股份有限公司 | Non-phosphorus composite corrosion inhibitor and application thereof in low hard water |
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| CN110963588B (en) * | 2018-09-28 | 2021-09-21 | 中国石油化工股份有限公司 | Non-phosphorus composite corrosion inhibitor and application thereof in medium and hard water |
| CN110963585B (en) * | 2018-09-28 | 2021-09-21 | 中国石油化工股份有限公司 | Non-phosphorus composite corrosion inhibitor and application thereof in low hard water |
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