CN105174498B - The composite highly effective low-phosphorus corrosion scale inhibition agent and preparation method of a kind of suitable low-hardness water - Google Patents
The composite highly effective low-phosphorus corrosion scale inhibition agent and preparation method of a kind of suitable low-hardness water Download PDFInfo
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- CN105174498B CN105174498B CN201510411944.2A CN201510411944A CN105174498B CN 105174498 B CN105174498 B CN 105174498B CN 201510411944 A CN201510411944 A CN 201510411944A CN 105174498 B CN105174498 B CN 105174498B
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Abstract
The invention provides a kind of composite highly effective low-phosphorus corrosion scale inhibition agent of suitable low-hardness water, its constituent and mass percent are：17 alkenyl hydroxyethyl imidazole hyamines：15%~25%, copolymer of phosphono carboxylic acid：5%~15%, acrylic acrylate co-polymer of sulfonate：10%~20%, BTA：0.1%~1.5%, anhydrous zinc chloride 5%~15%, cosolvent：1%~3%, remaining composition is water.The present invention is applied to soft, high alkalinity, severe corrosive water quality, and basicity is less than 600mg/L, and corrosion and scale inhibition performance is excellent.The complexing agent of the present invention is lower compared with organophosphor phosphate and phosphoric acid ester medicament total phosphorus content, and total phosphorus content≤1.0mg/L in industrial discharge water, pollution-free also with biodegradable ability, more environmentally friendly.Cost of the present invention is low, easily compounding, and stability is good, and dosage is few.There is good concertedness between each component, stable performance, there is excellent corrosion and scale inhibition performance.
Description
Technical field
The present invention relates to the composite highly effective low-phosphorus corrosion resistance of water-treatment technology field, more particularly to a kind of suitable low-hardness water
Dirty medicament and preparation method.
Background technology
The use of water is indispensable in the industrial production, and dosage is huge, in today of water resource increasingly scarcity, industrially
Recirculating cooling water system is generally used, and along with the increase of recirculated water cycles of concentration, it may appear that fouling, corrosion and microorganism danger
The problems such as evil, the serious problems such as the decline of heat exchange equipment efficiency, blocking, corrosion failure are caused, generally use is to add at present
Water treatment agent suppresses corrosion and fouling, and organophosphor system medicament is most widely used.
Organophosphor system corrosion-mitigation scale-inhibition antisludging agent has the double action of corrosion-mitigation scale-inhibition and scale inhibition, and applicable water quality is extensive, still
The total phosphorus scope of general organophosphor scale inhibition antisludging agent control causes total phosphorus content in water higher, is discharged into 6~8mg/L
After environment, the eutrophication of water body can be caused, forms the harm such as " red tide ", final polluted water.China is at present to industry
The total phosphorus content of discharge water, which is made, requires in terms of total phosphorus≤1.0mg/L (GB 13456-2012), so following low-phosphorous and without phosphorus
Green medicament by be water treatment agent developing direction.
The content of the invention
It is an object of the invention to provide a kind of composite highly effective low-phosphorus corrosion scale inhibition agent of suitable low-hardness water and preparation side
Method, the shortcomings that overcoming prior art, it is low-phosphorous it is green, there is excellent corrosion-mitigation scale-inhibition and scale inhibition and dispersion, suitable for low hard
Degree, high alkalinity, the industrial circulating cooling water of severe corrosive.
To achieve the above object, the present invention is realized using following technical scheme：
A kind of composite highly effective low-phosphorus corrosion scale inhibition agent of suitable low-hardness water, its constituent and mass percent are：
17 alkenyl hydroxyethyl imidazole hyamines：15%~25%, copolymer of phosphono carboxylic acid：5%~15%, acrylic acid-acrylic
Acid esters-co-polymer of sulfonate：10%~20%, BTA：0.1%~1.5%, anhydrous zinc chloride 5%~15%, hydrotropy
Agent：1%~3%, remaining composition is water.
Cosolvent is dimethylformamide.
The preparation method of the composite highly effective low-phosphorus corrosion scale inhibition agent of a kind of suitable low-hardness water, at normal temperatures according to above-mentioned
Proportioning, 17 alkenyl hydroxyethyl imidazole quinoline quaternary amines, copolymer of phosphono carboxylic acid, acrylic acid-acrylic ester-sulfonate are copolymerized
Thing and water are added in reactor, stir 0.5h under rotating speed 150rpm speed afterwards, after solution is well mixed, are warming up to 40
DEG C -50 DEG C, adding anhydrous zinc chloride and BTA stirring is completely dissolved it, adds dimethylformamide and persistently stirs
0.8h, 1h-2h is incubated, cooling and standings after mixing, produces the present invention.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, suitable for soft, high alkalinity, severe corrosive water quality, basicity is less than 600mg/L (with CaCO3Meter), scale inhibition and
Corrosion and scale inhibition performance is excellent.
2nd, complexing agent of the invention is lower compared with organophosphor phosphate and phosphoric acid ester medicament total phosphorus content, and in industrial discharge
Total phosphorus content≤1.0mg/L (in terms of total phosphorus) in water, it is pollution-free also with biodegradable ability, it is more environmentally friendly.
3rd, complexing agent cost of the invention is low, easily compounding, and stability is good, and dosage is few.
4th, pH value is applicable in the range of 6.5-9.0, and there is adaptive automatic control function.
5th, there is good concertedness between each component, stable performance, there is excellent corrosion and scale inhibition performance.
Embodiment
The present invention is described in detail below, it should be noted that the implementation of the present invention is not limited to following embodiment party
Formula.
A kind of composite highly effective low-phosphorus corrosion scale inhibition agent of suitable low-hardness water, its constituent and mass percent are：
17 alkenyl hydroxyethyl imidazole hyamines：15%~25%, copolymer of phosphono carboxylic acid：5%~15%, acrylic acid-acrylic
Acid esters-co-polymer of sulfonate：10%~20%, BTA：0.1%~1.5%, anhydrous zinc chloride 5%~15%, hydrotropy
Agent：1%~3%, remaining composition is water.
17 alkenyl hydroxyethyl imidazole quinoline quaternary amines are the OED of Qinhuangdao triumph Chemical Co., Ltd. production, are the present invention
In one of host, 17 alkenyl hydroxyethyl imidazole quinoline quaternary amines are a kind of high efficiency corrosion inhibiting scale retardants, not only with good life
Thing degradation property, beneficial to environmental protection, also good heat-resistant stability, heat is not decomposed.Content in complexing agent is 15%-
25%, preferably 17%-23%.
The present invention substitutes organophosphor phosphate and phosphoric acid ester medicament using 17 alkenyl hydroxyethyl imidazole quinoline quaternary amines, when
When metal contacts with acid medium, 17 alkenyl hydroxyethyl imidazole quinoline quaternary amines can adsorb forms unimolecule on the metal surface
Film, in tight, uniform diaphragm.
Copolymer of phosphono carboxylic acid (POCA) is two of the host in the present invention, has excellent resistance calcium carbonate, calcium phosphate
Dirty effect, good with conventional water treatment agent compatibility, synergistic effect is obvious.Content in complexing agent is 5%-15%, preferably
7%-13%.
Acrylic acid-acrylic ester-co-polymer of sulfonate is the DT-101 of Dong Tao Chemical Engineering Technologies Co., Ltd production, is this hair
Three of host in bright, acrylic acid-acrylic ester-co-polymer of sulfonate are a kind of efficient scales for having corrosion and scale inhibition performance concurrently point
Powder, suitable for high temperature, high ph-values, it is high-alkali under the conditions of use, content of the component in complexing agent is 10%-20%, preferably
13%-17%.
BTA (BTA) is a kind of nitrogen azole material, and its anion and cuprous ion forms a kind of insoluble
The complex compound of stabilizer pole.This complex compound absorption on the metal surface, forms one layer of stable, inert diaphragm so that gold
Category is protected.BTA (BTA) especially has good effect to suppressing copper corrosion, and to suppressing corrosion of carbon steel
There is effect.
Anhydrous zinc chloride belongs to zinc salt, is a kind of conventional corrosion inhibiting and descaling agent, generally to be mixed with other types corrosion inhibiting and descaling agent
Close and use, the content in complexing agent is 5%-15%, preferably 8%-13%.
Cosolvent selects dimethylformamide, to play solubilization, makes complexing agent be more easy to compound.
The preparation method of the composite highly effective low-phosphorus corrosion scale inhibition agent of a kind of suitable low-hardness water, at normal temperatures according to above-mentioned
Proportioning, 17 alkenyl hydroxyethyl imidazole quinoline quaternary amines, copolymer of phosphono carboxylic acid, acrylic acid-acrylic ester-sulfonate are copolymerized
Thing and water are added in reactor, stir 0.5h under rotating speed 150rpm speed afterwards, after solution is well mixed, are warming up to 40
DEG C -50 DEG C, adding anhydrous zinc chloride and BTA stirring is completely dissolved it, adds dimethylformamide and persistently stirs
0.8h, 1h-2h is incubated, cooling and standings after mixing, produces the present invention.
A kind of dosage of the composite highly effective low-phosphorus corrosion scale inhibition agent of suitable low-hardness water of the present invention is 30mg/L.
The composite highly effective low-phosphorus corrosion scale inhibition agent formula of three constituent contents is respectively configured according to the present invention, for chemically examining
Room and field test, formula are as follows：
Formula 1：
It is prepared by compound low-phosphorus corrosion scale inhibition agent：17 alkenyl hydroxyethyl imidazole quinoline quaternary amines 18%, phosphono-carboxylic acids are common
Polymers 12%, acrylic acid-acrylic ester-co-polymer of sulfonate 13%, anhydrous zinc chloride 11%, BTA 0.5%, diformazan
Base formamide 2.5%, surplus are water.
Formula 2：
It is prepared by compound low-phosphorus corrosion scale inhibition agent：17 alkenyl hydroxyethyl imidazole quinoline quaternary amines 20%, phosphono-carboxylic acids are common
Polymers 10%, acrylic acid-acrylic ester-co-polymer of sulfonate 15%, anhydrous zinc chloride 10%, BTA 0.8%, diformazan
Base formamide 3%, surplus are water.
Formula 3：
It is prepared by compound low-phosphorus corrosion scale inhibition agent：17 alkenyl hydroxyethyl imidazole quinoline quaternary amines 23%, phosphono-carboxylic acids are common
Polymers 8%, acrylic acid-acrylic ester-co-polymer of sulfonate 17%, anhydrous zinc chloride 8%, BTA 1.0%, dimethyl
Formamide 1%, surplus are water.
Embodiment 1：Testing raw water quality is：PH 7.78, μ s/cm of Cond 179, the hard 90mg/L of total calcium are (with CaCO3Meter),
Calcium hardness 50mg/L is (with CaCO3Meter), Cl-60mg/L, total alkalinity 80mg/L are (with CaCO3Meter).
Tested by 2.5 times of experiment raw water qualities of concentration, prepare calcium hardness 125mg/L (with CaCO3Meter), Cl-150mg/
L, total alkalinity 200mg/L is (with CaCO3Meter) tested, 40 DEG C of water temperature, complexing agent 30mg/L is respectively added, is pressed《Water treatment agent delays
Lose measure -- the rotary hanging plate method of scale-inhibiting properties》(GB-T 18175-2000) standard performs, and result of the test is as follows.
Drawn through experiment and meet industrial circulating cooling water processing design rule in 2.5 times of several lower carbon steel lacing film corrosion rates of concentration
The requirement of model (GB 50050--2007), PO in water4 3-Meet wanting for total phosphorus≤1.0mg/L of industrial discharge water (in terms of total phosphorus)
Ask.
Embodiment two：
Testing raw water quality is：PH 7.82, μ s/cm of Cond 140, the hard 60mg/L of total calcium are (with CaCO3Meter), calcium hardness
40mg/L is (with CaCO3Meter), Cl-35mg/L, total alkalinity 61mg/L are (with CaCO3Meter).
Tested by 5 times of experiment raw water qualities of concentration, prepare calcium hardness 300mg/L (with CaCO3Meter), Cl-175mg/L、
Total alkalinity 305mg/L is (with CaCO3Meter), 40 DEG C of water temperature, complexing agent 30mg/L is respectively added, is pressed《Water treatment agent corrosion and scale inhibition performance
Measure -- rotary hanging plate method》(GB-T 18175-2000) standard performs, and result of the test is as follows.
Drawn through experiment and still meet industrial circulating cooling water processing design in 5 times of several lower carbon steel lacing film corrosion rates of concentration
The requirement of specification (GB 50050--2007), PO in water4 3-Meet total phosphorus≤1.0mg/L's of industrial discharge water (in terms of total phosphorus)
It is required that.
Embodiment three：
It is applied to certain factory circulation water station from formula 2, it is 6800m that the system, which possesses water,3, quantity of circulating water 6500m3, it is
System water quality be：PH 8.72, μ s/cm of Cond 877, the hard 360mg/L of total calcium are (with CaCO3Meter), calcium hardness 280mg/L is (with CaCO3
Meter), Cl-155mg/L, total alkalinity 275mg/L are (with CaCO3Meter).Compound low-phosphorus corrosion scale inhibition agent dosage 30mg/L, run 1
Month, carbon steel lacing film corrosion rate is 0.0203mm/a, PO in recirculated water4 3-(in terms of total phosphorus) daily detection total phosphorus≤1.0mg/
L, systems chiller deposit without carbonate scale, obtain good application effect.
A kind of composite highly effective low-phosphorus corrosion scale inhibition agent of suitable low-hardness water of the present invention has advantages below：
First, there is good concertedness so that composite drug has excellent corrosion-mitigation scale-inhibition and scale inhibition performance between each component
Energy.
2nd, soft, high alkalinity, the recirculated cooling water of severe corrosive are applicable.
3rd, complexing agent component of the invention easily compounds, and stability is good, very convenient in operation and management, is advantageous to
Ensure treatment effect.
4th, complexing agent of the invention is low-phosphorous environment-friendly medicament, and dosage is low, meets the total phosphorus content of industrial discharge water
(in terms of total phosphorus)≤1.0mg/L (GB 13456-2012), belong to environmentally friendly medicament, low toxicity is pollution-free.
Claims (2)
1. the composite highly effective low-phosphorus corrosion scale inhibition agent of a kind of suitable low-hardness water, it is characterised in that its constituent and quality
Percentage is：17 alkenyl hydroxyethyl imidazole quinoline quaternary amines 20%, copolymer of phosphono carboxylic acid 10%, acrylic acid-acrylic ester-
Co-polymer of sulfonate 15%, anhydrous zinc chloride 10%, BTA 0.8%, dimethylformamide 3%, surplus are water；
The composite highly effective low-phosphorus corrosion scale inhibition agent is applied to the recirculated water of following water quality：It is pH 8.72, μ s/cm of Cond 877, total
Calcium is firmly with CaCO3360mg/L, calcium hardness are counted with CaCO3Count 280mg/L, Cl-155mg/L, total alkalinity are with CaCO3Count 275mg/L；
The dosage of composite highly effective low-phosphorus corrosion scale inhibition agent is 30mg/L, and Testing index is that carbon steel lacing film corrosion rate is
0.0203mm/a, PO in recirculated water4 3-Daily detection total phosphorus≤1.0mg/L, systems chiller without carbonate scale deposit.
2. a kind of preparation method of the composite highly effective low-phosphorus corrosion scale inhibition agent of suitable low-hardness water described in claim 1, its
Be characterised by, at normal temperatures according to said ratio, by 17 alkenyl hydroxyethyl imidazole quinoline quaternary amines, copolymer of phosphono carboxylic acid,
Acrylic acid-acrylic ester-co-polymer of sulfonate and water are added in reactor, stir 0.5h under rotating speed 150rpm speed afterwards,
After solution is well mixed, 40 DEG C -50 DEG C are warming up to, adding anhydrous zinc chloride and BTA stirring is completely dissolved it,
Add dimethylformamide and persistently stir 0.8h, be incubated 1h-2h, cooling and standings after mixing, produce a kind of suitable low-hardness water
Composite highly effective low-phosphorus corrosion scale inhibition agent.
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| CN106219780B (en) * | 2016-07-27 | 2019-08-09 | 鞍钢贝克吉利尼水处理有限公司 | A kind of compound low-phosphorus corrosion scale inhibition agent and preparation method |
| CN112626510A (en) * | 2020-12-14 | 2021-04-09 | 陕西省石油化工研究设计院 | Efficient environment-friendly pre-filming agent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6063288A (en) * | 1998-06-30 | 2000-05-16 | Betzdearborn Inc. | Inhibition of silica and silicate deposition using imidazolines |
| CN102745825A (en) * | 2011-04-22 | 2012-10-24 | 中国石油化工股份有限公司 | High-efficiency low-phosphorus corrosion and scale inhibiting dispersant and its preparation method |
| CN104556427A (en) * | 2015-01-15 | 2015-04-29 | 鞍钢贝克吉利尼水处理有限公司 | Composite efficient corrosion and scale inhibitor for ammonia still water treatment |
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- 2015-07-13 CN CN201510411944.2A patent/CN105174498B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6063288A (en) * | 1998-06-30 | 2000-05-16 | Betzdearborn Inc. | Inhibition of silica and silicate deposition using imidazolines |
| CN102745825A (en) * | 2011-04-22 | 2012-10-24 | 中国石油化工股份有限公司 | High-efficiency low-phosphorus corrosion and scale inhibiting dispersant and its preparation method |
| CN104556427A (en) * | 2015-01-15 | 2015-04-29 | 鞍钢贝克吉利尼水处理有限公司 | Composite efficient corrosion and scale inhibitor for ammonia still water treatment |
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Address after: 114000 Dadaowan Industrial Zone A06-8, Anshan City, Liaoning Province Patentee after: Angang Litian (Anshan) water treatment Co.,Ltd. Address before: 114000 Dadaowan Industrial Zone A06-8, Anshan City, Liaoning Province Patentee before: ANGANG BK GIULINI WATER TREATMENT Co.,Ltd. |
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