CN111573857A - Corrosion and scale inhibitor for water in steel industry - Google Patents
Corrosion and scale inhibitor for water in steel industry Download PDFInfo
- Publication number
- CN111573857A CN111573857A CN202010330388.7A CN202010330388A CN111573857A CN 111573857 A CN111573857 A CN 111573857A CN 202010330388 A CN202010330388 A CN 202010330388A CN 111573857 A CN111573857 A CN 111573857A
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- water
- corrosion
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- steel industry
- scale inhibitor
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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
- C02F5/12—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
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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
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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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
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
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- 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)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a corrosion and scale inhibitor for water in the steel industry, which comprises the following raw materials in percentage by mass: 0.5-2% of zinc chloride, 3-5% of isothiazolinone, 15-20% of dodecyl dimethyl benzyl ammonium chloride, 20-30% of polyaspartic acid, 15-25% of polyepoxysuccinic acid, 10-15% of hydrolyzed polymaleic anhydride, 0.5-2% of sodium dodecyl benzene sulfonate and 10-20% of water. The corrosion and scale inhibitor can be used in a circulating water system taking water in the steel industry as water supplement, has good sterilization and algae removal effects while inhibiting corrosion, can prevent the growth of slime in water, and has a certain slime stripping effect.
Description
Technical Field
The invention relates to the field of water treatment agents, in particular to a corrosion and scale inhibitor for water in the steel industry.
Background
The recycling of reclaimed water in the steel industry as circulating water is a common way for improving the water resource recycling rate in the steel industry, compared with new water, the reclaimed water has higher concentration of various ions, higher concentration of organic pollutants and higher content of various bacteria, and after long-time operation, the biological slime amount is increased quickly, so that the concentration multiple of the circulating water system using the reclaimed water as water supplement is lower, even the circulating water system cannot operate normally, and the wide application of the reclaimed water as the water supplement of the circulating water system is restricted.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a corrosion and scale inhibitor for the reclaimed water in the steel industry, which can be used in a circulating water system taking the reclaimed water in the steel industry as water supplement, has good sterilization and algae removal effects while inhibiting corrosion, can prevent the growth of slime in water and has a certain slime stripping effect.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a corrosion and scale inhibitor for water in the steel industry, which comprises the following raw materials in percentage by mass: 0.5-2% of zinc chloride, 3-5% of isothiazolinone, 15-20% of dodecyl dimethyl benzyl ammonium chloride, 20-30% of polyaspartic acid, 15-25% of polyepoxysuccinic acid, 10-15% of hydrolyzed polymaleic anhydride, 0.5-2% of sodium dodecyl benzene sulfonate and 10-20% of water.
Further, the material comprises the following raw materials in percentage by mass: 0.5 percent of zinc chloride, 3 percent of isothiazolinone, 15 percent of dodecyl dimethyl benzyl ammonium chloride, 30 percent of polyaspartic acid, 15 percent of polyepoxysuccinic acid, 10 percent of hydrolytic polymaleic anhydride, 0.5 percent of sodium dodecyl benzene sulfonate and 26 percent of water.
Further, the material comprises the following raw materials in percentage by mass: 2% of zinc chloride, 5% of isothiazolinone, 20% of dodecyl dimethyl benzyl ammonium chloride, 20% of polyaspartic acid, 15% of polyepoxysuccinic acid, 15% of hydrolyzed polymaleic anhydride, 2% of sodium dodecyl benzene sulfonate and 21% of water.
Further, the material comprises the following raw materials in percentage by mass: 2% of zinc chloride, 5% of isothiazolinone, 20% of dodecyl dimethyl benzyl ammonium chloride, 20% of polyaspartic acid, 25% of polyepoxysuccinic acid, 10% of hydrolyzed polymaleic anhydride, 2% of sodium dodecyl benzene sulfonate and 16% of water.
A method for preparing corrosion and scale inhibitor for water in steel industry includes heating water to 50 deg.C, sequentially adding the above materials into water, and naturally cooling to room temperature after 15 min.
Compared with the prior art, the invention has the beneficial technical effects that:
the corrosion inhibitor can be used for reclaimed water treated by a physical and chemical method in the steel industry, and tests show that the corrosion rates of carbon steel, stainless steel and copper are lower than the requirements of industrial circulating cooling water treatment design specification GB50050 plus 2007 in the case that the addition amount is 80mg/L, so that a good corrosion and scale inhibition effect is obtained, biological slime does not occur in the whole process, and the sterilization effect is obvious.
Detailed Description
Example 1
A corrosion and scale inhibitor for water in the steel industry comprises the following raw materials in percentage by mass: 0.5 percent of zinc chloride, 3 percent of isothiazolinone, 15 percent of dodecyl dimethyl benzyl ammonium chloride, 30 percent of polyaspartic acid, 15 percent of polyepoxysuccinic acid, 10 percent of hydrolytic polymaleic anhydride, 0.5 percent of sodium dodecyl benzene sulfonate and 26 percent of water. Heating water to 50 deg.C, sequentially adding the above materials into water, and naturally cooling to room temperature after 15 min.
The method comprises the steps of taking reclaimed water at the discharge outlet of a sewage treatment plant of a certain large-scale steel and iron integrated enterprise in northwest of China as test water, adding the corrosion and scale inhibitor in the embodiment 1 of the invention, and respectively adopting 'calcium carbonate deposition method for measuring scale inhibition performance of water treatment agent' GB/T16632-1996 'and' method for measuring corrosion inhibition performance of water treatment agent 'GB/T18175-2014' to measure the scale inhibition and corrosion inhibition performance of a medicament, wherein the adding amount of the corrosion and scale inhibitor is 80mg/L, according to the test result, the scale inhibition performance of the water treatment agent is 92.84%, and the corrosion rates of the water treatment agent on copper, stainless steel and carbon steel are respectively 5.-4mm/a、6.88×10-4mm/a、3.85×10-3mm/a, meets the requirements of industrial circulating cooling water treatment design specification GB50050-2007, biological slime does not occur in the whole process, and the sterilization effect is obvious. The water treatment agent has good corrosion and scale inhibition performance and can be used in water in the steel industry.
Example 2
A corrosion and scale inhibitor for water in the steel industry comprises the following raw materials in percentage by mass: 2% of zinc chloride, 5% of isothiazolinone, 20% of dodecyl dimethyl benzyl ammonium chloride, 20% of polyaspartic acid, 15% of polyepoxysuccinic acid, 15% of hydrolyzed polymaleic anhydride, 2% of sodium dodecyl benzene sulfonate and 21% of water. Heating water to 50 deg.C, sequentially adding the above materials into water, and naturally cooling to room temperature after 15 min.
The reclaimed water discharged from a sewage treatment plant of a certain large-scale steel and iron united enterprise in northwest of China is used as test water, and the cost is addedIn the invention, in the embodiment 2, the scale and corrosion inhibitor respectively adopts a calcium carbonate deposition method for measuring the scale and corrosion inhibition performance of the water treatment agent GB/T16632-1996 and a rotating hanging piece method for measuring the corrosion inhibition performance of the water treatment agent GB/T18175-2014 to measure the scale and corrosion inhibition performance of the agent, the addition amount of the scale and corrosion inhibitor is 80mg/L, according to the test result, the scale and corrosion inhibition performance of the water treatment agent is 95.74%, and the corrosion rates of the scale and corrosion inhibitor on copper, stainless steel and carbon steel are respectively 5.80 × 10-4mm/a、7.12×10-4mm/a、3.78×10-3mm/a, meets the requirements of industrial circulating cooling water treatment design specification GB50050-2007, biological slime does not occur in the whole process, and the sterilization effect is obvious. The water treatment agent has good corrosion and scale inhibition performance and can be used in water in the steel industry.
Example 3
A corrosion and scale inhibitor for water in the steel industry comprises the following raw materials in percentage by mass: 2% of zinc chloride, 5% of isothiazolinone, 20% of dodecyl dimethyl benzyl ammonium chloride, 20% of polyaspartic acid, 25% of polyepoxysuccinic acid, 10% of hydrolyzed polymaleic anhydride, 2% of sodium dodecyl benzene sulfonate and 16% of water. Heating water to 50 deg.C, sequentially adding the above materials into water, and naturally cooling to room temperature after 15 min.
The method is characterized in that reclaimed water at the discharge outlet of a sewage treatment plant of a certain large-scale steel and iron integrated enterprise in northwest of China is used as test water, and the scale and corrosion inhibition performances of the agent are respectively measured by adopting a water treatment agent scale inhibition performance measurement calcium carbonate deposition method GB/T16632-1996 and a water treatment agent corrosion inhibition performance measurement method rotary hanging sheet method GB/T18175-2014, the addition amount of the corrosion and scale inhibitor is 80mg/L, according to the test result, the scale inhibition performance of the water treatment agent is 94.70%, and the corrosion rates of the water treatment agent on copper, stainless steel and carbon steel are respectively 5.02 × 10-4mm/a、5.98×10-4mm/a、3.68×10-3mm/a, meets the requirements of industrial circulating cooling water treatment design specification GB50050-2007, biological slime does not occur in the whole process, and the sterilization effect is obvious. The water treatment agent has good corrosion and scale inhibition performance and can be used in water in the steel industry.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (5)
1. A corrosion and scale inhibitor for water in the steel industry is characterized by comprising the following raw materials in percentage by mass: 0.5-2% of zinc chloride, 3-5% of isothiazolinone, 15-20% of dodecyl dimethyl benzyl ammonium chloride, 20-30% of polyaspartic acid, 15-25% of polyepoxysuccinic acid, 10-15% of hydrolyzed polymaleic anhydride, 0.5-2% of sodium dodecyl benzene sulfonate and 10-20% of water.
2. The corrosion and scale inhibitor for water in the steel industry according to claim 1, which is characterized by comprising the following raw materials in percentage by mass: 0.5 percent of zinc chloride, 3 percent of isothiazolinone, 15 percent of dodecyl dimethyl benzyl ammonium chloride, 30 percent of polyaspartic acid, 15 percent of polyepoxysuccinic acid, 10 percent of hydrolytic polymaleic anhydride, 0.5 percent of sodium dodecyl benzene sulfonate and 26 percent of water.
3. The corrosion and scale inhibitor for water in the steel industry according to claim 1, which is characterized by comprising the following raw materials in percentage by mass: 2% of zinc chloride, 5% of isothiazolinone, 20% of dodecyl dimethyl benzyl ammonium chloride, 20% of polyaspartic acid, 15% of polyepoxysuccinic acid, 15% of hydrolyzed polymaleic anhydride, 2% of sodium dodecyl benzene sulfonate and 21% of water.
4. The corrosion and scale inhibitor for water in the steel industry according to claim 1, which is characterized by comprising the following raw materials in percentage by mass: 2% of zinc chloride, 5% of isothiazolinone, 20% of dodecyl dimethyl benzyl ammonium chloride, 20% of polyaspartic acid, 25% of polyepoxysuccinic acid, 10% of hydrolyzed polymaleic anhydride, 2% of sodium dodecyl benzene sulfonate and 16% of water.
5. The preparation method of the corrosion and scale inhibitor for the water in the steel industry according to any one of claims 1 to 4, wherein the water is heated to 50 ℃, the raw materials are sequentially added into the water, and the mixture is naturally cooled to room temperature after 15 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330388.7A CN111573857A (en) | 2020-04-24 | 2020-04-24 | Corrosion and scale inhibitor for water in steel industry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330388.7A CN111573857A (en) | 2020-04-24 | 2020-04-24 | Corrosion and scale inhibitor for water in steel industry |
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| CN111573857A true CN111573857A (en) | 2020-08-25 |
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| CN202010330388.7A Pending CN111573857A (en) | 2020-04-24 | 2020-04-24 | Corrosion and scale inhibitor for water in steel industry |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020034694A (en) * | 2000-11-03 | 2002-05-09 | 조민호 | Multifunctional Water-treating Composition and Method of water-treating using the same |
| CN1789159A (en) * | 2005-12-05 | 2006-06-21 | 赵清顺 | Sterilization inhibitor for circulated cooling water treatment |
| CN101066811A (en) * | 2007-06-15 | 2007-11-07 | 武汉金坡化工科技有限公司 | No-phosphate corrosion and scale inhibitor and its application |
| US20110073802A1 (en) * | 2009-04-06 | 2011-03-31 | Anthony P Haag | Slow release tablet composition for treating industrial water systems |
| CN104108758A (en) * | 2014-07-31 | 2014-10-22 | 威海翔宇环保科技有限公司 | Inoxidable sludge stripping agent |
-
2020
- 2020-04-24 CN CN202010330388.7A patent/CN111573857A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020034694A (en) * | 2000-11-03 | 2002-05-09 | 조민호 | Multifunctional Water-treating Composition and Method of water-treating using the same |
| CN1789159A (en) * | 2005-12-05 | 2006-06-21 | 赵清顺 | Sterilization inhibitor for circulated cooling water treatment |
| CN101066811A (en) * | 2007-06-15 | 2007-11-07 | 武汉金坡化工科技有限公司 | No-phosphate corrosion and scale inhibitor and its application |
| US20110073802A1 (en) * | 2009-04-06 | 2011-03-31 | Anthony P Haag | Slow release tablet composition for treating industrial water systems |
| CN104108758A (en) * | 2014-07-31 | 2014-10-22 | 威海翔宇环保科技有限公司 | Inoxidable sludge stripping agent |
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Application publication date: 20200825 |