CN104628156A - Phosphorus-free descaling corrosion inhibitor - Google Patents
Phosphorus-free descaling corrosion inhibitor Download PDFInfo
- Publication number
- CN104628156A CN104628156A CN201310564048.0A CN201310564048A CN104628156A CN 104628156 A CN104628156 A CN 104628156A CN 201310564048 A CN201310564048 A CN 201310564048A CN 104628156 A CN104628156 A CN 104628156A
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- China
- Prior art keywords
- phosphorus
- corrosion inhibitor
- water
- corrosion
- free descaling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C02F5/105—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
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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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- Chemical & Material Sciences (AREA)
- 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 invention discloses a phosphorus-free descaling corrosion inhibitor and a preparation method. The phosphorus-free descaling corrosion inhibitor is composed of polymaleic anhydride, benzotriazol, zinc nitrate, polyacrylic acid, polyoxy succinate, sodium gluconate and deionized water. According to the invention, calcium phosphate scale can not be easily formed during a usage process of the product, phosphor content in discharge water is far lower than a national standard, and the phosphorus-free descaling corrosion inhibitor belongs to the environment friendly water treatment agent. The phosphorus-free descaling corrosion inhibitor has good corrosion inhibition effect, has obvious corrosion inhibition effect to the ferrous metal, has slight corrosion effect to non ferrous metal such as copper, and zinc salt or chromium salt can be added for improvement. Polymaleic anhydride is nontoxic and biodegradable, and can not generate severe pollution to environment.
Description
Technical field
The present invention relates to a kind of industrial circulating water without phosphorus scale removal inhibiter and its preparation method and application.Particularly relate to a kind of without phosphorus scale removal inhibiter for circulating water cooling treatment.
Background technology
In recent years, along with the quick growth of national economy, many basic industry have also been obtained significant progress, as the energy, iron and steel, oil refining, large chemical industry etc., thus make industrial water consumption significantly increase year by year, wherein water coolant proportion is comparatively large, and some department is even up to about 90%.Therefore, how utilizing new and high technology, play Superiority of Scientific Research, effective and reasonable ground water saving water conservation is not contaminated, is one of problem being badly in need of solution in rapid economic development.
Be engaged in the enterprise of water treatment agent research and development and production both at home and abroad all at the without phosphorus scale removal inhibiter of research and development high-performance: as silicon series prescription, large owing to adding pharmaceutical quantities, and scale inhibition and dispersion performance is poor, is progressively eliminated; Molybdenum system (tungsten) formulation cost is too high and be difficult to come into the market, and poly-epoxy succinic acid, poly aspartic acid all belong to environmental type novel dispersant, are just progressively applied at present.Now major part without phosphorus (phosphine) anti-incrustation corrosion inhibitor mostly is two-pack or three components both at home and abroad, adds inconvenience, and some medicament is also containing a small amount of phosphorus (phosphine) or the heavy metal containing other.
The main purpose of circulating water cooling treatment is inhibition, scale inhibition, kill livestock and anti-foundry loam, but is usually difficult to adopt a kind of medicament to solve all problems, needs entirety to treat, therefore needs to make compound prescription, in the hope of best effect.
China's circulating water treatment is after early stage direct discharge, and along with the introduction of maximization device, industrial circulating water enters the seventies and adds the stage that water conditioner carries out circular treatment.Early stage water conditioner directly adopts inorganic phosphate as tripoly phosphate sodium STPP or Sodium hexametaphosphate 99, not only scale inhibition and corrosion mitigating effect undesirable, and the discharge of a large amount of phosphorus-containing wastewater also result in environmental pollution; Used the employing chromic salt water conditioner of " industrial colling treatment process " (1984) described in book of Xu Shouchang chief editor to process afterwards, but the toxicity of chromic salt is comparatively large, institute's effluent environmental pollution is comparatively large, and therefore eliminating need not.After this, China has introduced the water conditioner formula S-6450 of Japanese company field company, this formula adopts organic phosphonate, inorganic phosphate, zinc salt to form composite scale-inhibiting corrosion inhibitor, its zinc salt content is up to 8.3%, this formula is applied on the many circulating water devices of China, and effect is better, but, because Zn content is very high, so easily form zinc dirt.At present, domestic and international water treatment field develops again many new composite scale-inhibiting corrosion inhibitors successively, as USP4, the water conditioner of 649,025 HPPA (2-hydroxyl phosphino-acetic acid)/HEDP (the 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid)/TTA (tolyltriazole) introduced; CN1062242C (publication date: February 21 calendar year 2001) describe a kind of with HPPA and chromic salts for host, the water treatment agent of the components such as composite organic phosphonic compound.The common feature of these composite scale-inhibiting corrosion inhibitors is that the cycles of concentration of recirculated water is generally no more than 4, if will continue to improve cycles of concentration, need the method adopting acid adding, the equipment corrosion brought thus and operational difficulty but not easily solve.
Summary of the invention
Technical problem to be solved by this invention is, a kind of composite scale-inhibiting corrosion inhibitor for the treatment of recirculated cooling water is provided, when do not use inorganic/organo phosphorous compounds, overcome existing composite scale-inhibiting corrosion inhibitor needs the shortcoming of the acid adding without phosphorus scale removal inhibiter for circulating water cooling treatment when high concentration multiple (>=5) runs.
In order to solve the problem, the present invention adopts following formula: polymaleic anhydride, benzotriazole, zinc nitrate, polyacrylic acid, polyoxy succsinic acid, Sunmorl N 60S and deionized water, and its mass ratio is: polymaleic anhydride 30% ~ 50%, polyoxy succsinic acid 10% ~ 20%, zinc nitrate 40% ~ 50%, benzotriazole 20% ~ 30%, polyacrylic acid 5% ~ 15%, Sunmorl N 60S 1% ~ 5%, appropriate deionized water.
Tool of the present invention has the following advantages:
1, the present invention in use not easily forms calcium phosphate scale, and in discharge water, phosphorus content, far below national standard, belongs to environmentally friendly water conditioner;
2, biochemical technology and sufacing combine with traditional Stability Technique of Water Quality by the present invention, effectively improve scale inhibition and the antiseptic property of interchanger metal interface, especially for the professional difficulties of the northern area of China high rigidity, high alkalinity, the easy structure of water quality, breach traditional Stability Technique of Water Quality improving the limitation in cycles of concentration, creatively solving the scale inhibition problem of hyperconcentration circulating water treatment, the recirculated cooling water being can run under hyperconcentration (>=5) condition, has saved a large amount of Freshwater resources;
3, the present invention is without the need to adding acid treatment, adopts natural ph to run, has both saved facility investment, and simplified schedule of operation; Be conducive to again improving equipment life, the safe operation of securing system, avoid tradition and add the hidden danger such as etching apparatus, system leakage that acid treatment causes;
4, preparation method is simple to operate, easy to use, and usage quantity is few, cost is low, and contribute to the management reducing recirculated water running cost and strengthen recirculated water, the anti-incrustation corrosion inhibitor obtained has good scale inhibitor effect aborning, and back segment operation is had no effect, there is good application prospect.
Embodiment
Below in conjunction with embodiment, the without phosphorus scale removal inhibiter for circulating water cooling treatment of the present invention is described in detail.
Embodiment 1:
Appropriate deionized water.
Polymaleic anhydride, benzotriazole, zinc nitrate, polyacrylic acid, polyoxy succsinic acid, Sunmorl N 60S and deionized water mix by the preparation method of without phosphorus scale removal inhibiter, namely obtain product.
Biochemical technology and sufacing combine with traditional Stability Technique of Water Quality by the present invention, effectively improve scale inhibition and the antiseptic property of interchanger metal interface, especially for the professional difficulties of the northern area of China high rigidity, high alkalinity, the easy structure of water quality, breach traditional Stability Technique of Water Quality improving the limitation in cycles of concentration, creatively solving the scale inhibition problem of hyperconcentration circulating water treatment, the recirculated cooling water being can run under hyperconcentration (>=5) condition, has saved a large amount of Freshwater resources.
Embodiment 2:
Appropriate deionized water.
Preparation method is with embodiment 1.
The present invention, without the need to adding acid treatment, adopts natural ph to run, had both saved facility investment, and simplified schedule of operation; Be conducive to again improving equipment life, the safe operation of securing system, avoid tradition and add the hidden danger such as etching apparatus, system leakage that acid treatment causes
Embodiment 3:
Appropriate deionized water.
Preparation method is with embodiment 1.
Not easily form calcium phosphate scale in use procedure, and in discharge water, phosphorus content, far below national standard, belongs to environmentally friendly water conditioner.
Embodiment 4:
Appropriate deionized water.
The same embodiment 1 of preparation method.
This product also has the corrosion mitigating effect of having imitated, and has obvious corrosion inhibition especially to ferrous metal.
Preparation method is simple to operate, easy to use, and usage quantity is few, cost is low, and contribute to the management reducing recirculated water running cost and strengthen recirculated water, the anti-incrustation corrosion inhibitor obtained has good scale inhibitor effect aborning, and back segment operation is had no effect, there is good application prospect.
It is to be understood that above-mentioned explanation is only to explain the present invention, its content is not limited.
Claims (3)
1. a non-phosphorus scale and corrosion inhibitor, it comprises: polymaleic anhydride, benzotriazole, zinc nitrate, polyacrylic acid, polyoxy succsinic acid, Sunmorl N 60S and deionized water form.
2. according to claim 1, described research of non-phosphorus scale inhibitor, it is characterized in that, it is in mass ratio: polymaleic anhydride 30% ~ 50%, polyoxy succsinic acid 10% ~ 20%, zinc nitrate 40% ~ 50%, benzotriazole 20% ~ 30%, polyacrylic acid 5% ~ 15%, Sunmorl N 60S 1% ~ 5%, appropriate deionized water.
3., according to claims 1 to 3, described non-phosphorus scale and corrosion inhibitor, is characterized in that, preferably, and polymaleic anhydride 42%, polyoxy succsinic acid 16%, zinc nitrate 45% triazole 25%, polyacrylic acid 12%, Sunmorl N 60S 2%, appropriate deionized water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310564048.0A CN104628156A (en) | 2013-11-14 | 2013-11-14 | Phosphorus-free descaling corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310564048.0A CN104628156A (en) | 2013-11-14 | 2013-11-14 | Phosphorus-free descaling corrosion inhibitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104628156A true CN104628156A (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310564048.0A Pending CN104628156A (en) | 2013-11-14 | 2013-11-14 | Phosphorus-free descaling corrosion inhibitor |
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| CN (1) | CN104628156A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036358A (en) * | 2015-06-30 | 2015-11-11 | 苏州佑君环境科技有限公司 | Scale inhibitor for ash flushing water pipe and preparation method of scale inhibitor |
| CN111439854A (en) * | 2020-05-25 | 2020-07-24 | 嘉兴天兴环保技术有限公司 | Non-phosphorus scale inhibition and dispersion agent for sewage treatment and preparation method thereof |
-
2013
- 2013-11-14 CN CN201310564048.0A patent/CN104628156A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036358A (en) * | 2015-06-30 | 2015-11-11 | 苏州佑君环境科技有限公司 | Scale inhibitor for ash flushing water pipe and preparation method of scale inhibitor |
| CN111439854A (en) * | 2020-05-25 | 2020-07-24 | 嘉兴天兴环保技术有限公司 | Non-phosphorus scale inhibition and dispersion agent for sewage treatment and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |
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| WD01 | Invention patent application deemed withdrawn after publication |