CN102976502A - Non-phosphorus corrosion and scale inhibitor for treating industrial circulating cooling water - Google Patents
Non-phosphorus corrosion and scale inhibitor for treating industrial circulating cooling water Download PDFInfo
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- CN102976502A CN102976502A CN2012105315136A CN201210531513A CN102976502A CN 102976502 A CN102976502 A CN 102976502A CN 2012105315136 A CN2012105315136 A CN 2012105315136A CN 201210531513 A CN201210531513 A CN 201210531513A CN 102976502 A CN102976502 A CN 102976502A
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- sodium
- phosphate
- cooling water
- antisludging agent
- circulating cooling
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Abstract
The invention relates to a non-phosphorus corrosion and scale inhibitor for treating industrial circulating cooling water. The inhibitor is characterized by being formed by mixing the following components by mass percent: 15-20% of polyaspartic acid, 8-16% of sodium polyacrylate, 5-8% of molybdate, 10-15% of gluconate, 10-155 of natrium salicylicum and the balance of distilled water. The non-phosphorus corrosion and scale inhibitor provided by the invention has excellent collision and scale inhibition effect for Q235 carbon steel; when the dosage is from 10 mg.L <-1> to 1-30 mg.L<-1>, the annual corrosion rate for the Q235 carbon steel is not higher than 0.03mm.a<-1>; and the scale inhibition ratio is 97% or higher.
Description
Technical field
The present invention relates to a kind of phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water, is a kind of without phosphorus, eco-friendly corrosion inhibiting and descaling agent.
Background technology
Along with socioeconomic development, industrial water consumption increases day by day, and the cooling water amount proportion is 60%～80%, therefore the utilization of industrial circulating cooling water system can be saved a large amount of process waters, but it the drawbacks such as serious fouling, corrosion can occur in operational process, brought serious obstruction and loss to industrialized production.
Corrosion inhibiting and descaling agent is according to the characteristics of concrete water quality and the requirement compound that develop, that have inhibition and scale inhibition double effects concurrently of production.The safe operation of the equipment that guaranteed that comes into operation of corrosion inhibiting and descaling agent.And these chemical agents are the most at last as the waste discharge entered environment.Day by day raising along with people's environmental consciousness, all kinds of Water Treatment Chemicals are also proposed more and more higher requirement, and environmental legislation is increasingly strict, and the chromium corrosion inhibitor is disabled, phosphorus line formulation easily nourishes the bacterium algae, makes body eutrophication because of P contained compound, has been limited at present discharging.Thereby, develop the important directions that low-phosphorous or without phosphorus, environment amenable novel corrosion-retarding Scale inhibitors becomes domestic and international water treatment research.
Summary of the invention
The object of the present invention is to provide a kind of phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water, the corrosion and the scale problems that occur in the suppression equipment operational process, avoiding simultaneously phosphorus is the body eutrophication phenomenon that the discharging of medicament brings.
A kind of phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water provided by the invention, it is mixed by poly aspartic acid, sodium polyacrylate, molybdate, gluconate, sodium salicylate and distilled water; The shared mass percent of each composition is: poly aspartic acid 15%～20%, and sodium polyacrylate 8%～16%, molybdate 5%～8%, gluconate 10%～15%, sodium salicylate 10%～15%, all the other are distilled water.
Wherein said gluconate is selected from that Potassium Gluconate, gluconic acid are received, one or two or more kinds mixture in the maltonic acid sodium, maltonic acid potassium, Zinc Gluconate, manganese gluconate; Preferred gluconate is maltonic acid sodium or maltonic acid potassium.
Described molybdate is selected from Sodium orthomolybdate, ammonium molybdate, zinc molybdate, the lithium molybdate mixture of one or two or more kinds.Preferred Sodium orthomolybdate or ammonium molybdate.。
The preparation method of phosphate-free corrosion inhibition antisludging agent of the present invention: press described composition mass percent with poly aspartic acid, sodium polyacrylate, molybdate, gluconate, sodium salicylate and distilled water, add in the container successively in order and stir, churning time is more than the 1h, liquid to be mixed clarification and get product during without insoluble impurities.
The preferred technical solution of the present invention is: phosphate-free corrosion inhibition antisludging agent forms, by mass percentage: poly aspartic acid 15%～20%, sodium polyacrylate 8%～16%, Sodium orthomolybdate or ammonium molybdate 5%～8%, maltonic acid sodium or maltonic acid potassium 10%～15%, sodium salicylate 10%～15%, all the other are distilled water.
According to above-mentioned optimal technical scheme, the mass percent concentration of described poly aspartic acid is 16%～19%; The virtual mass percentage concentration of described sodium polyacrylate is 9%～15%; The virtual mass percentage concentration of described Sodium orthomolybdate or ammonium molybdate is 5%～8%; The virtual mass percentage concentration of described maltonic acid sodium or maltonic acid potassium is 11%～15%; The virtual mass percentage concentration of described sodium salicylate is 11%～15%.
The present invention is for the treatment of the preparation method of the phosphate-free corrosion inhibition antisludging agent of industrial circulating cooling water, press described quality percentage composition respectively with poly aspartic acid, sodium polyacrylate, Sodium orthomolybdate or ammonium molybdate, maltonic acid sodium or maltonic acid potassium, sodium salicylate and distilled water add in the container successively in order and stir, churning time is more than the 1h, liquid to be mixed clarification and get product during without insoluble impurities.
The application of phosphate-free corrosion inhibition antisludging agent of the present invention, dosage are 10mg.L
-1～30mg.L
-1, the annual corrosion rate of Q235 carbon steel is no more than 0.03mm.a
-1, far below GB 0.075mm.a
-1, scale inhibition performance reaches more than 97%.
The present invention has following characteristics:
1. corrosion inhibiting and descaling agent of the present invention does not contain phosphorus series compound, has stopped the generation of the body eutrophication phenomenon that the discharging because of phosphorus causes;
2. phosphate-free corrosion inhibition antisludging agent raw material sources of the present invention are extensive, and preparation technology is simple;
3. phosphate-free corrosion inhibition antisludging agent of the present invention has good inhibition and scale inhibition effect, and the annual corrosion rate of Q235 carbon steel is no more than 0.03mm.a
-1, far below GB 0.075mm.a
-1, scale inhibition performance can reach more than 97%.
Embodiment
Be described further below in conjunction with composition and the effect of specific embodiment to phosphate-free corrosion inhibition antisludging agent of the present invention, but the scope that the present invention protects is not limited to the scope of embodiment.
Illustrate: employed medicine is the conventional medicine in commercially available prod or laboratory among the present invention.
Embodiment 1
The preparation phosphate-free corrosion inhibition antisludging agent
By following composition mass percent feeding, poly aspartic acid 15%～20%, sodium polyacrylate 8%～16%, Sodium orthomolybdate or ammonium molybdate 5%～8%, maltonic acid sodium or maltonic acid potassium 10%～15%, sodium salicylate 10%～15%, all the other are distilled water, then with poly aspartic acid, and sodium polyacrylate, Sodium orthomolybdate or ammonium molybdate, maltonic acid sodium or maltonic acid potassium, sodium salicylate and distilled water add in the beaker successively by said sequence and to stir, churning time is about 1h, liquid to be mixed clarification and get product during without insoluble impurities.
Embodiment 2
Preparation 100g phosphate-free corrosion inhibition antisludging agent, preparation process: get poly aspartic acid 18g, sodium polyacrylate 13g, Sodium orthomolybdate 6g, maltonic acid sodium 12g, sodium salicylate 12g, all the other are distilled water, join successively in the beaker of clean dried, stir, and namely get product.
Embodiment 3
Preparation 100g phosphate-free corrosion inhibition antisludging agent, preparation process: get poly aspartic acid 19g, sodium polyacrylate 13g, Sodium orthomolybdate 6g, maltonic acid sodium 12g, sodium salicylate 12g, all the other are distilled water, join successively in the beaker of clean dried, stir, and namely get product.
Embodiment 4
Preparation 100g phosphate-free corrosion inhibition antisludging agent, preparation process: get poly aspartic acid 18g, sodium polyacrylate 15g, Sodium orthomolybdate 6g, maltonic acid sodium 12g, sodium salicylate 12g, all the other are distilled water, join successively in the beaker of clean dried, stir, and namely get product.
Embodiment 5
Preparation 100g phosphate-free corrosion inhibition antisludging agent, preparation process: get poly aspartic acid 18g, sodium polyacrylate 13g, Sodium orthomolybdate 7g, maltonic acid sodium 12g, sodium salicylate 12g, all the other are distilled water, join successively in the beaker of clean dried, stir, and namely get product.
Embodiment 6
Preparation 100g phosphate-free corrosion inhibition antisludging agent, preparation process: get poly aspartic acid 17g, sodium polyacrylate 13g, Sodium orthomolybdate 6g, maltonic acid sodium 14g, sodium salicylate 12g, all the other are distilled water, join successively in the beaker of clean dried, stir, and namely get product.
Embodiment 7
Preparation 100g phosphate-free corrosion inhibition antisludging agent, preparation process: get poly aspartic acid 18g, sodium polyacrylate 13g, Sodium orthomolybdate 6g, maltonic acid sodium 12g, sodium salicylate 14g, all the other are distilled water, join successively in the beaker of clean dried, stir, and namely get product.
Embodiment 8
Preparation 100g phosphate-free corrosion inhibition antisludging agent, preparation process: get poly aspartic acid 16g, sodium polyacrylate 15g, Sodium orthomolybdate 5g, maltonic acid sodium 11g, sodium salicylate 15g, all the other are distilled water, join successively in the beaker of clean dried, stir, and namely get product.
Embodiment 9
Preparation 100g phosphate-free corrosion inhibition antisludging agent, preparation process: get poly aspartic acid 19g, sodium polyacrylate 9g, Sodium orthomolybdate 8g, maltonic acid sodium 15g, sodium salicylate 11g, all the other are distilled water, join successively in the beaker of clean dried, stir, and namely get product.
Embodiment 10
Preparation 100g phosphate-free corrosion inhibition antisludging agent, preparation process: get poly aspartic acid 18g, sodium polyacrylate 11g, Sodium orthomolybdate 7g, maltonic acid sodium 12g, sodium salicylate 12g, all the other are distilled water, join successively in the beaker of clean dried, stir, and namely get product.
Embodiment 11
The phosphate-free corrosion inhibition antisludging agent effect experiment of embodiment 2-10 preparation
This experimental water is the Enterprises water coolant, adopts the rotary hanging plate weight-loss method to measure the corrosion rate of Q235 carbon steel in cooling circulating water, and the static-state scale inhibition method is measured its resistance calcium carbonate scale rate, adds the phosphate-free corrosion inhibition antisludging agent of embodiment 2-10 preparation in its water.
The experiment water-quality guideline:
The rotary hanging plate corrosion experiment: laboratory apparatus is assembled according to the HG/T2159-91 standard.Experiment condition: (1) experimental temperature is 45 ± 1 ℃; (1) rotating speed is 75r.min
-1(3) experimental period is 72h.The experiment lacing film adopts HG/T 3523-2008 " water coolant chemical treatment standard corrosion coupon technical qualification " I type test piece, and material is the Q235 carbon steel coupon, size 50mm * 25mm * 2mm, test piece area 28cm
2
Annual corrosion rate (mma
-1) calculation formula as follows:
K
a＝87600(m
0-m)/sρt
In the formula: K
aBe annual corrosion rate, mm.a
-1m
0For testing the quality of front test piece, g; M is the quality of the rear test piece of experiment, g; S is the test piece surface-area, cm
2ρ is test piece density, g.cm
-3T is test period, h.
Static-state scale inhibition experiment: according to GB/T16632-2008 " the mensuration tosca method of water conditioner scale-inhibiting properties ".Experimental temperature is 80+1 ℃, and experimental period is 10h.Scale inhibition performance S calculating formula:
In the formula: S is scale inhibition performance, %; ρ
1Ca for solution after the experiment that adds Scale inhibitors
2+Concentration, mgL
-1ρ
0Ca for solution behind the blank assay that does not add Scale inhibitors
2+Concentration, mgL
-1ρ
2Be the Ca in the solution that configures before testing
2+Concentration, mgL
-1.
Experimental result sees the following form:
The result shows that phosphate-free corrosion inhibition antisludging agent of the present invention is no more than 0.03mm.a to the annual corrosion rate of Q235 carbon steel
-1, far below GB 0.075mm.a
-1, scale inhibition performance can arrive more than 97%.
Claims (8)
1. phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water, it is characterized in that, this phosphate-free corrosion inhibition antisludging agent quality percentage composition is: poly aspartic acid 15%～20%, sodium polyacrylate 8%～16%, molybdate 5%～8%, gluconate 10%～15%, sodium salicylate 10%～15%, all the other are distilled water; Wherein said molybdate is Sodium orthomolybdate or ammonium molybdate, and described gluconate is maltonic acid sodium or maltonic acid potassium.
2. the phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water according to claim 1 is characterized in that, the virtual mass percentage concentration of poly aspartic acid is 16%～19%.
3. the phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water according to claim 1 is characterized in that, the virtual mass percentage concentration of sodium polyacrylate is 9%～15%.
4. the phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water according to claim 1 is characterized in that, the virtual mass percentage concentration of Sodium orthomolybdate or ammonium molybdate is 5%～8%.
5. the phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water according to claim 1 is characterized in that, the virtual mass percentage concentration of maltonic acid sodium or maltonic acid potassium is 11%～15%.
6. the phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water according to claim 1 is characterized in that, the virtual mass percentage concentration of sodium salicylate is 11%～15%.
7. the preparation method of each described phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water according to claim 1-6, it is characterized in that, press described quality percentage composition respectively with poly aspartic acid, sodium polyacrylate, Sodium orthomolybdate or ammonium molybdate, maltonic acid sodium or maltonic acid potassium, sodium salicylate and distilled water, add in the container successively in order and stir, churning time is more than the 1h, liquid to be mixed clarification and get product during without insoluble impurities.
8. the application of each described phosphate-free corrosion inhibition antisludging agent for the treatment of industrial circulating cooling water is characterized in that dosage is 10 mg.L according to claim 1-6
-1～30mg.L
-1, the annual corrosion rate of Q235 carbon steel is no more than 0.03mm.a
-1, far below GB 0.075mm.a
-1, scale inhibition performance reaches more than 97%.
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|---|---|---|---|
| CN201210531513.6A CN102976502B (en) | 2012-12-10 | 2012-12-10 | Non-phosphorus corrosion and scale inhibitor for treating industrial circulating cooling water |
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|---|---|---|---|
| CN201210531513.6A CN102976502B (en) | 2012-12-10 | 2012-12-10 | Non-phosphorus corrosion and scale inhibitor for treating industrial circulating cooling water |
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| CN102976502B CN102976502B (en) | 2014-04-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773845A (en) * | 2014-01-15 | 2015-07-15 | 东莞新科技术研究开发有限公司 | Corrosion inhibitor for recirculated cooling water |
| CN105060511A (en) * | 2015-08-02 | 2015-11-18 | 宁波保税区维迪克环保科技有限公司 | Phosphorus-free corrosion and scale inhibitor for water treatment, and preparation method thereof |
| CN108018543A (en) * | 2017-11-03 | 2018-05-11 | 湖北海力环保科技有限公司 | A kind of without phosphorus no zinc prefilming agent of recirculated cooling water and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1621362A (en) * | 2003-11-26 | 2005-06-01 | 北京燕化兴业技术开发公司 | Non-phosphorus compound scale and corrosion inhibitor for treatment of circulating cooling water |
| CN1919752A (en) * | 2006-09-11 | 2007-02-28 | 北京瀚博英电力科技有限公司 | Environment-friendly type composite corrosion and scale inhibitor |
| CN102050525A (en) * | 2009-11-05 | 2011-05-11 | 杨羽 | Environment-friendly water quality stabilizer |
-
2012
- 2012-12-10 CN CN201210531513.6A patent/CN102976502B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1621362A (en) * | 2003-11-26 | 2005-06-01 | 北京燕化兴业技术开发公司 | Non-phosphorus compound scale and corrosion inhibitor for treatment of circulating cooling water |
| CN1919752A (en) * | 2006-09-11 | 2007-02-28 | 北京瀚博英电力科技有限公司 | Environment-friendly type composite corrosion and scale inhibitor |
| CN102050525A (en) * | 2009-11-05 | 2011-05-11 | 杨羽 | Environment-friendly water quality stabilizer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773845A (en) * | 2014-01-15 | 2015-07-15 | 东莞新科技术研究开发有限公司 | Corrosion inhibitor for recirculated cooling water |
| CN105060511A (en) * | 2015-08-02 | 2015-11-18 | 宁波保税区维迪克环保科技有限公司 | Phosphorus-free corrosion and scale inhibitor for water treatment, and preparation method thereof |
| CN105060511B (en) * | 2015-08-02 | 2017-10-10 | 广州市鑫川工程技术开发公司 | A kind of water process phosphate-free corrosion inhibition antisludging agent and preparation method thereof |
| CN108018543A (en) * | 2017-11-03 | 2018-05-11 | 湖北海力环保科技有限公司 | A kind of without phosphorus no zinc prefilming agent of recirculated cooling water and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN102976502B (en) | 2014-04-23 |
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