CN109626604A - A kind of non-phosphate environment-friendly type imidazoline system's corrosion inhibiting and descaling agent and preparation method - Google Patents
A kind of non-phosphate environment-friendly type imidazoline system's corrosion inhibiting and descaling agent and preparation method Download PDFInfo
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- CN109626604A CN109626604A CN201811582883.6A CN201811582883A CN109626604A CN 109626604 A CN109626604 A CN 109626604A CN 201811582883 A CN201811582883 A CN 201811582883A CN 109626604 A CN109626604 A CN 109626604A
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- imidazoline
- corrosion inhibiting
- descaling agent
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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
- 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
- C02F5/12—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 containing nitrogen
- C02F5/125—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 containing nitrogen 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
-
- 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
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to a kind of non-phosphate environment-friendly type imidazoline system's corrosion inhibiting and descaling agent and preparation methods.Non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent forms by weight percentage are as follows: water-soluble imidazoline 30%~40%, acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer 4%~6%, nonionic terpolymer 4%~6%, sodium gluconate 15%~20%, soluble zinc salt 1%~3%, sodium tetraborate 0.5%-1.5%, sodium bromide 0.5%-1.5%, remaining is distilled water.The annual corrosion rate of non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent of the invention, up to 98% or more, has preferable scale inhibitor effect lower than 0.0500mm/a, scale inhibition performance.
Description
Technical field
The present invention relates to corrosion inhibiting and descaling agent fields, and in particular to a kind of non-phosphate environment-friendly type imidazoline system's corrosion inhibiting and descaling agent and system
Preparation Method.
Background technique
With the gradually quickening of China's process of industrialization, Municipal Sewage for Circulating accounts for 90% or more of industrial water total amount,
During cooling water is recycled, soluble organic fraction content is continuously increased in water, causes serious pipe-line equipment corrosion and scaling problem,
Bring huge economy and resources loss.Effectively to solve the problems, such as this, organic inhibition dirty-proof agent is in industrial circulating water system
In be widely applied.
Organic inhibition dirty-proof agent used in major part at present, phosphorus content is very high, and phosphorus element content is excessively high in water body, meeting
Cause serious water eutrophication problem.Therefore, exploitation novel green antisludging agent has become domestic and international water treatment agent research
Important topic.Poly-aspartate (PASP) and poly-epoxy succinic acid (PESA) be at present it is internationally recognized have it is without phosphorus, can biology
The Green Water Treatment Reagents of degradation characteristic.Imidazoline as a kind of natural polymer antisludging agent, because its is nontoxic, easily biological-degradable and
The features such as resourceful, important function has been played in environmental protection especially water process, also start the extensive pass by people
Note.Imidazoline is compounded into synthesis with poly-aspartate or poly-epoxy succinic acid, for reaching green in industrial cycle cooling water
Efficient anticorrosion-antiscaling effect, while soluble Zn salt content in water body is further decreased, it is very promising.
Summary of the invention
The purpose of the present invention is to provide a kind of non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agents, and it is cold to be used for industrial cycle
But water system has good corrosion and scale inhibition performance, and can effectively improve industrial water water-saving rate, reduce blowdown flow rate, overcomes phosphorus
It is corrosion inhibiting and descaling agent to environment bring secondary pollution.
For achieving the above object, The technical solution adopted by the invention is as follows:
The present invention provides a kind of environment-friendly type imidazoline corrosion inhibiting and descaling agent, forms by weight percentage are as follows: water-soluble imidazoline
30%~40%, acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer 4%~6%, carboxylate-sulfonate-acrylic acid
Ester terpolymer 4%~6%, sodium gluconate 15%~20%, soluble zinc salt 1%~3%, sodium tetraborate 0.5%-
1.5%, sodium bromide 0.5%-1.5%, remaining is distilled water.
According to the above scheme, wherein the imidazoline is imidazoline-poly-epoxy succinic acid or imidazoline-poly-aspartate；
The imidazoline the preparation method comprises the following steps: imidazoline, poly-aspartate or poly-epoxy succinic acid are added sequentially to distill
In water, heating water bath is to 80-85 DEG C, and constant temperature is stirred to react 1.5-2.5 hours and obtains in acid condition, stands, and drops to temperature
To room temperature, soluble zinc salt is added, after sodium tetraborate adjusting pH is added after stirring and evenly mixing, acrylic acid -2- acrylamide-is added
2- methyl propane sulfonic acid copolymer, carboxylate-sulfonate-acrylate terpolymer, sodium gluconate, sodium bromide stir and evenly mix
Up to product.
According to the above scheme, the nonionic terpolymer is carboxylate-sulfonate-acrylate terpolymer.
According to the above scheme, the soluble zinc salt is zinc sulfate, one or two or more kinds of mixtures in zinc chloride.
Non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent of the invention, it is carbon containing to can be applied to circulation, softened water etc.
The industrial water system of steel, copper equipment.
The invention has the characteristics that:
1, non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent of the invention, each ingredients Biogenic degradability is good in formula, not phosphorous member
Element avoids water eutrophication, belongs to environmental type product, has good corrosion and scale inhibition performance, is applied to industry
Recirculating cooling water system can be improved industrial water water-saving rate, reduce blowdown flow rate, overcomes phosphorous medicament to the secondary dirt of environment bring
Dye, meets country-level sewage drainage standard.
2, the present invention compounds imidazoline with poly-aspartate or poly-epoxy succinic acid by a certain percentage, in acid item
Poly-aspartate or poly-epoxy succinic acid under part with amine side-chain can be copolymerized with imidazoline generates a kind of macromolecule
Copolymer had both remained the original scale-inhibiting properties of the two, while nonionic terpolymer can cooperate with and play good dispersion work
With, and on this basis, the electropositive on strand is increased, dirty crystalline substance is made to be more difficult to generate, compared to traditional imidazoline scale inhibition
Agent can play better scale inhibition and peptizaiton.Imidazoline and poly-aspartate or poly-epoxy succinic acid, nonionic ternary are total to
Polymers is used in compounding, with compared with exclusive use imidazoline, poly-aspartate or poly-epoxy succinic acid and nonionic three under the same terms
Membered copolymer is compared, and has superior antiscaling dispersion effect and lower cost, has preferable market prospects.
3, in non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent, gluconate and underwater gold category ion have preferable network
Cooperation is used；Borate in water is conducive to the passivation that oxygen promotes metal in the absorption of metal surface；Bromide ion in water can have
Effect alleviates the corrosion of metal surface；A kind of adsorbed film type corrosion inhibiter of imidazoline can form chelate with iron ion, above a variety of
Ingredient collective effect can achieve good corrosion mitigating effect, and can effectively reduce the content of soluble zinc salt in system.Experiment knot
Fruit shows that the annual corrosion rate of non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent of the invention is reached lower than 0.0500mm/a, scale inhibition performance
98% or more, there is preferable scale inhibitor effect.
4, non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent chemical stabilization and thermal stability are high, and oxidation resistance is strong, scale inhibition
Corrosion mitigating effect is obvious, reduces equipment pipe corrosion, reduces the security risk in industrial production.
5, non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent raw material sources are extensive, and price is low, and scale inhibition effect is excellent, prepare work
Skill is simple, and equipment investment is lower.
6, non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent has wide range of applications, and can be used for circulation, softened water etc.
The industrial water system of carbon steel, copper equipment.
Specific embodiment.
Composition to non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent of the invention and application combined with specific embodiments below
Effect is described further, but the range that the range of the invention protected is not limited to the embodiment.
Drug as used in the following examples is commercial product or laboratory conventional medication.
The preparation of the corrosion inhibiting and descaling agent containing imidazoline, the method is as follows:
Imidazoline, poly-aspartate or poly-epoxy succinic acid are added sequentially in distilled water, heating water bath is to 80 DEG C, in acidity
Under the conditions of constant temperature stir 1.5-2.5 hour and react and obtain, the wherein quality of imidazoline and poly-aspartate or poly-epoxy succinic acid
Than for 1:3.0-4.3.Then zinc sulfate or zinc chloride is added, stirs and evenly mixs, sodium tetraborate is added under stirring and adjusts pH
Afterwards, acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer is sequentially added, nonionic terpolymer, sodium gluconate,
Sodium bromide stirs and evenly mixs to get product.
Each material: water-soluble imidazoline 30%~40%, acrylic acid -2- acryloyl are taken by following composition mass percents
Amine -2- methyl propane sulfonic acid copolymer 4%~6%, carboxylate-sulfonate-acrylate terpolymer 4%~6%, glucose
Sour sodium 15%~20%, soluble zinc salt 1%~3%, sodium tetraborate 1%, sodium bromide 1%, remaining is distilled water.With reference to above-mentioned side
Method, prepares the non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent of following embodiment 1-4, and can be carried out point to its corrosion-and-scale-inhibiting property
Analysis evaluation.
Embodiment 1
Non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent is prepared according to above-mentioned preparation method, in which: water-soluble imidazoline 10g gathers
Epoxysuccinic acid 30g, 80-85 DEG C of water bath heating temperature, constant temperature mixing time 1.5h under acid condition is prepared according to the above method
The non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent of 100g, each raw material dosage: imidazoline-poly-epoxy succinic acid 30g, acrylic acid-
2- acrylamide-2-methyl propane sulfonic copolymer 4g, carboxylate-sulfonate-acrylate terpolymer 5g, sodium gluconate
15g, white vitriol 3g, sodium tetraborate 1g, sodium bromide 1g, remaining is distilled water.
Using " the measurement rotary hanging plate method of GBT 18175-2000 water treatment agent corrosion inhibition " and " GBT 16632-
The measurement tosca method of 2008 water treatment agent scale-inhibiting properties " corrosion inhibition and evaluation of antisludging performance, medicament are carried out to it
Adding concentration is 80ppm, and the corrosion of carbon steel rate of medicament is 0.0420mm/a, and scale inhibition performance is up to 98.3%.
Embodiment 2
Non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent is prepared according to above-mentioned preparation method, in which: water-soluble imidazoline 10g gathers
Aspartic acid 30g, 80 DEG C of water bath heating temperature, constant temperature mixing time 2h under acid condition prepares the nothing of 100g according to the above method
Phosphorus environment-friendly type imidazoline system corrosion inhibiting and descaling agent, each raw material dosage: imidazoline-poly-epoxy succinic acid 40g, acrylic acid -2- acryloyl
Amine -2- methyl propane sulfonic acid copolymer 6g, carboxylate-sulfonate-acrylate terpolymer 6g, sodium gluconate 15g, chlorination
Zinc 1g, sodium tetraborate 1g, sodium bromide 1g, remaining is distilled water.
Using " the measurement rotary hanging plate method of GBT 18175-2000 water treatment agent corrosion inhibition " and " GBT 16632-
The measurement tosca method of 2008 water treatment agent scale-inhibiting properties " corrosion inhibition and evaluation of antisludging performance, medicament are carried out to it
Adding concentration is 80ppm, and the corrosion of carbon steel rate of medicament is 0.0478mm/a, and scale inhibition performance is up to 98.8%.
Embodiment 3
Non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent is prepared according to above-mentioned preparation method, in which: water-soluble imidazoline 10g gathers
Aspartic acid 43g, 85 DEG C of water bath heating temperature, constant temperature mixing time 2.5h under acid condition prepares 100g's according to the above method
Non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent, each raw material dosage: imidazoline-poly-epoxy succinic acid 40g, acrylic acid -2- propylene
Amide -2- methyl propane sulfonic acid copolymer 6g, carboxylate-sulfonate-acrylate terpolymer 6g, sodium gluconate 20g, seven
Water zinc sulphate 2g, sodium tetraborate 1g, sodium bromide 1g, remaining is distilled water.
Using " the measurement rotary hanging plate method of GBT 18175-2000 water treatment agent corrosion inhibition " and " GBT 16632-
The measurement tosca method of 2008 water treatment agent scale-inhibiting properties " corrosion inhibition and evaluation of antisludging performance, medicament are carried out to it
Adding concentration is 80ppm, and the corrosion of carbon steel rate of medicament is 0.0453mm/a, and scale inhibition performance is up to 99.1%.
Claims (5)
1. a kind of non-phosphate environment-friendly type imidazoline system corrosion inhibiting and descaling agent, which is characterized in that form by weight percentage are as follows: water-soluble
Imidazoline 30%~40%, acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer 4%~6%, nonionic ternary polymerization
Object 4%~6%, sodium gluconate 15%~20%, soluble zinc salt 1%~3%, sodium tetraborate 0.5%-1.5%, sodium bromide
0.5%-1.5%, remaining is distilled water.
2. non-phosphate environment-friendly type imidazoline according to claim 1 system corrosion inhibiting and descaling agent, which is characterized in that the imidazoline
Be corrosion inhibiting and descaling agent be imidazoline-poly-epoxy succinic acid or imidazoline-poly-aspartate；The preparation method of the imidazoline
Are as follows: imidazoline, poly-aspartate or poly-epoxy succinic acid are added sequentially in distilled water, heating water bath is to 80-85 DEG C, in acid
Property under the conditions of constant temperature stir 1.5-2.5 hour and react and obtain, the wherein matter of imidazoline and poly-aspartate or poly-epoxy succinic acid
Amount is than being 1:3.0-4.3.
3. non-phosphate environment-friendly type imidazoline according to claim 1 system corrosion inhibiting and descaling agent, which is characterized in that the nonionic
Terpolymer is carboxylate-sulfonate-acrylate terpolymer.
4. non-phosphate environment-friendly type imidazoline according to claim 1 system corrosion inhibiting and descaling agent, which is characterized in that the solubility
Zinc salt is zinc sulfate and/or zinc chloride.
5. the preparation method of non-phosphate environment-friendly type imidazoline described in claim 1 system corrosion inhibiting and descaling agent: it is characterized by: by imidazoles
Acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer, nonionic terpolymer, grape is added in quinoline system corrosion inhibiting and descaling agent
Sodium saccharate, soluble zinc salt, sodium tetraborate, sodium bromide stir and evenly mix to get product.
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| CN201811582883.6A CN109626604A (en) | 2018-12-24 | 2018-12-24 | A kind of non-phosphate environment-friendly type imidazoline system's corrosion inhibiting and descaling agent and preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114163329A (en) * | 2021-12-16 | 2022-03-11 | 浙江汉景环保化学材料科技有限公司 | Antifouling agent |
| CN114426338A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Non-phosphorus scale and corrosion inhibitor and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114426338A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Non-phosphorus scale and corrosion inhibitor and preparation method and application thereof |
| CN114163329A (en) * | 2021-12-16 | 2022-03-11 | 浙江汉景环保化学材料科技有限公司 | Antifouling agent |
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