CN103241846A - Composite scale and corrosion inhibitor - Google Patents
Composite scale and corrosion inhibitor Download PDFInfo
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- CN103241846A CN103241846A CN201310169498XA CN201310169498A CN103241846A CN 103241846 A CN103241846 A CN 103241846A CN 201310169498X A CN201310169498X A CN 201310169498XA CN 201310169498 A CN201310169498 A CN 201310169498A CN 103241846 A CN103241846 A CN 103241846A
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Abstract
The invention discloses a composite scale and corrosion inhibitor. The inhibitor is characterized by comprising the following main ingredients: 2-phosphono-1,2,4-tricarboxylic acid, hydroxyethylidene-1,1-diphosphonic acid, an acrylic copolymer, benzotriazole, zinc chloride, polyepoxysuccinic acid and deionized water. The inhibitor disclosed by the invention has the following beneficial effects that 2-phosphono-1,2,4-tricarboxylic acid, the hydroxyethylidene-1,1-diphosphonic acid, the acrylic copolymer, benzotriazole, zinc chloride and the polyepoxysuccinic acid of the inhibitor all have good scale and corrosion resistance; and after the above ingredients are compounded according to the weight parts in the formulation of the inhibitor disclosed by the invention, the scale and corrosion resistance effect of the inhibitor is obviously enhanced. The inhibitor disclosed by the invention is suitable for high hardness and high base, and has extremely strong complexing function on carbonate scale. The composite sale and corrosion inhibitor is good in scale and corrosion resistance, low in phosphorus content, and therefore is capable of meeting environment protection requirements. The inhibitor disclosed by the invention not only is suitable for circulating cooling water in a natural gas purification treatment plant, but also is suitable for circuiting cooling water systems in other industries of chemical fertilizer, power, textile and the like, as well as is wide in application range; and acid does not need to be added for regulating PH (Potential of Hydrogen) value.
Description
Technical field
The present invention relates to the industrial cycle water-treatment technology field, particularly a kind of composite scale-inhibiting corrosion inhibitor.
Background technology
Water is the blood of industry, at present, in the bigger industry of the such water consumption of industrial or agricultural, water saving is a bigger problem, existing reasonable method is exactly recycle cooling water, but because the water quality difference of the water that industry is discharged makes these water directly not to be recycled, must could be applied to again produce through after a series for the treatment of processes.
Industrial circulating cooling water system can run into some problems when the cycle for the treatment of water coolant, such as fouling in the industrial circulating cooling water system, corrosion and microorganism harm etc.Existing solution to the problems described above mainly is to add anti-incrustation corrosion inhibitor in recirculating cooling water system.Anti-incrustation corrosion inhibitor generally adopts polyphosphoric acid, organic phosphoric acid, contains the sulfonic group multipolymer, with the zinc salt compound prescription.Organophosphorus is widely used in the prescription of anti-incrustation corrosion inhibitor of process water because scale inhibition effect is good.
For general scale inhibitor agent prescription, water quality difference according to system, can there be bigger difference in its corrosion inhibition and scale-inhibiting properties, in low cycles of concentration circulating water system, because hardness in the water, basicity are all lower, the fouling tendency of recirculated water is lower, corrodes byer force relatively, requires the scale inhibitor agent prescription that corrosion mitigating effect preferably will be arranged; And in the high concentration multiple circulating water system, be non-adding in the circulating water system that acid regulates especially, because the increase of water quality calcium hardness and basicity, the deposition tendency increases, and corrode faintly, requires the scale inhibitor agent prescription must have good scale-inhibiting properties at this moment.
Summary of the invention
The object of the invention provides a kind of composite scale-inhibiting corrosion inhibitor, can be applicable to the circulating water system of industries such as chemical industry, chemical fertilizer, electric power, weaving, because the variation of the water quality of every profession and trade, the present invention can be adapted to the corrosion mitigating effect of low cycles of concentration, can scale-inhibiting properties preferably be arranged at high concentration multiple again.
Technical scheme of the present invention is:
A kind of composite scale-inhibiting corrosion inhibitor is characterized in that, comprises following main ingredient:
2-phosphonate group-1,2,4-tricarboxylic acid, hydroxy ethylene diphosphonic acid, acrylic terpolymer, benzotriazole, zinc chloride, poly-epoxy succinic acid.
Preferably, the weight part of described each main ingredient is:
Preferably, described acrylic terpolymer is vinylformic acid/Propylene glycol monoacrylate/2-methyl-2-acrylamido propane sulfonic acid terpolymer.
Preferably, described composite scale-inhibiting corrosion inhibitor is applicable to the more natural gas conditioning treatment plant of high rigidity, high basicity, high-temperature and calcium ions, magnesium ion and sulfate ion, chemical plant recirculating cooling water system, and described composite scale-inhibiting corrosion inhibitor also is applicable to industry recirculating cooling water systems such as the chemical fertilizer, electric power, weaving of high rigidity, high basicity, high-temperature.
Preferably, be standard with the calcium hardness, calcium hardness is during less than 200mg/L in the 1L recirculated cooling water, and described composite scale-inhibiting corrosion inhibitor injected volume remains when calcium hardness is 200～400mg/L in 40～60mg/L1L recirculated cooling water, and described composite scale-inhibiting corrosion inhibitor injected volume keeps 60～80mg/L; Calcium hardness is during greater than 400mg/L in the 1L recirculated cooling water, and described composite scale-inhibiting corrosion inhibitor injected volume remains 80～90mg/L.
2-phosphonate group-1,2, the 4-tricarboxylic acid, phosphorus content is low, has good anticorrosion-antiscaling property, the organic phosphoric acid that is better than using always, special scale-inhibiting properties at high temperature is much better than organic phosphoric acid commonly used, can improve the solubleness of zinc, and the oxidation susceptibility of anti-chlorine is good, composite synergetic property is good, also is the good stable agent of zinc salt.Hydroxy ethylene diphosphonic acid, phosphorus content is low, is a kind of organic phosphine acids anti-incrustation corrosion inhibitor, can form stable complex compound with multiple metal ions such as iron, copper, zinc, the oxide compound on energy dissolution of metals surface.Still can play good corrosion-mitigation scale-inhibition effect under 250 ℃, still very stable under high pH value, facile hydrolysis is not difficult for decomposing under the general light and heat condition.Resistance to acids and bases, anti-oxychlorination performance are good than other organic phospho acid.Can belong to ion with underwater gold, especially form six annulus inner complexs with calcium ion, thereby have scale inhibition effect and the tangible molten limit effect of tool preferably, when with the compound use by a certain percentage of other component of the present invention, show desirable synergistic effect.Vinylformic acid/Propylene glycol monoacrylate/2-methyl-2-acrylamido propane sulfonic acid terpolymer, has the premium properties that in alkaline aqueous solution, disperses iron, zinc oxyhydroxide and calcium carbonate, calcium phosphate, because it has sulfonic acid group, so under high temperature, high-alkali, high calcium condition, still have good scale inhibition dissemination.Than some sulfonic acid copolymers in the market such as propene sulfonic acid resistance calcium phosphate scale rate height, and it can be composite to about 10% with zinc chloride, and zinc chloride does not produce precipitation in high alkali aqueous solution, with other anti-incrustation corrosion inhibitors are composite good synergistic arranged.Benzotriazole is a kind of effectively copper and copper alloy inhibiter, simultaneously multiple metals such as iron, carbon steel is also had corrosion inhibition.Zinc chloride is a kind of cathodic corrosion inhibitor, and is very easily water-soluble, solubilized oxidation on metal surface thing.Poly-epoxy succinic acid, poly-epoxy succinic acid (PESA) are a kind of no nitrogen, non-phosphorus organic compound, have the scale inhibitor double effects concurrently, and biodegradability is good and be applicable to high-alkali, high metal content water system, is a kind of green Water Treatment Chemicals.
The invention has the beneficial effects as follows 2-phosphonate group-1,2 among the present invention, the 4-tricarboxylic acid, hydroxy ethylene diphosphonic acid, acrylic terpolymer, benzotriazole, poly-epoxy succinic acid has good anticorrosion-antiscaling property, and the scale inhibitor effect after composite by the weight part of the present invention prescription obviously strengthens.The present invention is suitable for high hard, high-alkali, and carbonate deposit is had extremely strong complexing.Corrosion and scale inhibition performance is good, and phosphorus content is low, and each component is nontoxic, can not pollute compliance with environmental protection requirements to environment.The present invention is not only applicable to the more natural gas conditioning treatment plant of high rigidity, high basicity, high-temperature and calcium ions, magnesium ion and sulfate ion, chemical plant recirculating cooling water system, is applicable to the industry recirculating cooling water system such as chemical fertilizer, electric power, weaving of high rigidity, high basicity, high-temperature yet.Wide accommodation does not need to add acid and regulates pH value.
In order to further specify the present invention, below in conjunction with embodiment composite scale-inhibiting corrosion inhibitor provided by the invention is described in detail, but they can not be interpreted as restriction to protection domain of the present invention.
The embodiment of existing anti-incrustation corrosion inhibitor:
Embodiment 1
The terpolymer, the active ingredient that take by weighing the 40.0g solid content and be 30% AA/AMPS/HPA are 50% PBTCA9.0g and 6.3g Zinc Chloride Anhydrous, add in the 35.7g water, shake up, and namely obtain the 100.0g liquid medicine of required preparation.
Embodiment 2
Taking by weighing the 2.0g solid content and be 50% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, Sodium orthomolybdate 10.0g, solid content is 30% T22516.7g and AA/AMPS/HPA and contains carboxylic acid group and sulfonic group terpolymer 20.0g simultaneously, be dissolved in the 45.0g water, add the 6.3g Zinc Chloride Anhydrous at last, it is fully dissolved, shake up, namely obtain the 100.0g liquid medicine of required preparation.
Embodiments of the invention:
Embodiment 1
With 10.0g2-phosphonate group-1,2,4-butane tricarboxylate (PBTCA), 8.0g hydroxy ethylene diphosphonic acid (HEDP), 1.0g benzotriazole (BTA), 1.0g zinc chloride, 15.0g vinylformic acid/Propylene glycol monoacrylate/2-acrylamide-2-methyl propane sulfonic acid (AA/HPA/AMPS), 10.0g poly-epoxy succinic acid (PESA) add deionized water and are diluted to 100g, are mixed with composite scale-inhibiting corrosion inhibitor.
With the above-mentioned composite scale-inhibiting corrosion inhibitor that is mixed with at 50 ℃ of temperature, rotating speed 75r/min, put in the described recirculated cooling water of following table, test period is 72h, calcium is firmly all with CaCO in the table
3Meter.
| Project | Specific conductivity | Calcium is hard | Basicity | Cl - | SO 4 2- | pH |
| Unit | μs/cm | mg/L | mg/L | mg/L | mg/L | ? |
| Data | 548 | 191.34 | 56.87 | 13.45 | 218.47 | 7.32 |
Embodiment 2
With 15g2-phosphonate group-1,2,4-butane tricarboxylate (PBTCA), 10g hydroxy ethylene diphosphonic acid (HEDP), 1.2g benzotriazole (BTA), 7.5g zinc chloride, 10.0g vinylformic acid/Propylene glycol monoacrylate/2-acrylamide-2-methyl propane sulfonic acid (AA/HPA/AMPS), 7.5g poly-epoxy succinic acid (PESA) add deionized water and are diluted to 100g, are mixed with composite scale-inhibiting corrosion inhibitor.
With the above-mentioned composite scale-inhibiting corrosion inhibitor that is mixed with at 50 ℃ of water temperatures, rotating speed 75r/min, put in the described recirculated cooling water of following table, test period is 72h, calcium is firmly all with CaCO in the table
3Meter.
| Project | Specific conductivity | Calcium is hard | Basicity | Cl - | SO 4 2- | pH |
| Unit | μs/cm | mg/L | mg/L | mg/L | mg/L | ? |
| Data | 432 | 162.19 | 46.41 | 11.12 | 162.23 | 7.73 |
Embodiment result is:
Relatively draw from above-mentioned experimental result, the present invention is lower than the usage quantity of existing anti-incrustation corrosion inhibitor, the scale inhibitor better effects if, and calcium is firmly all with CaCO in the table
3Meter.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a composite scale-inhibiting corrosion inhibitor is characterized in that, comprises following main ingredient:
2-phosphonate group-1,2,4-tricarboxylic acid, hydroxy ethylene diphosphonic acid, acrylic terpolymer, benzotriazole, zinc chloride, poly-epoxy succinic acid, deionized water.
2. composite scale-inhibiting corrosion inhibitor as claimed in claim 1 is characterized in that, the weight part of described each main ingredient is respectively:
3. composite scale-inhibiting corrosion inhibitor as claimed in claim 1 is characterized in that, described acrylic terpolymer is vinylformic acid/Propylene glycol monoacrylate/2-methyl-2-acrylamido propane sulfonic acid terpolymer.
4. composite scale-inhibiting corrosion inhibitor as claimed in claim 1, it is characterized in that, described composite scale-inhibiting corrosion inhibitor is applicable to the more natural gas conditioning treatment plant of high rigidity, high basicity, high-temperature and calcium ions, magnesium ion and sulfate ion, chemical plant recirculating cooling water system, and described composite scale-inhibiting corrosion inhibitor also is applicable to industry recirculating cooling water systems such as the chemical fertilizer, electric power, weaving of high rigidity, high basicity, high-temperature.
5. composite scale-inhibiting corrosion inhibitor as claimed in claim 1 is characterized in that, is standard with the calcium hardness, and calcium hardness is during less than 200mg/L in the 1L recirculated cooling water, and described composite scale-inhibiting corrosion inhibitor injected volume remains 40～60mg/L; When calcium hardness was 200～400mg/L in the 1L recirculated cooling water, described composite scale-inhibiting corrosion inhibitor injected volume kept 60～80mg/L; Calcium hardness is during greater than 400mg/L in the 1L recirculated cooling water, and described composite scale-inhibiting corrosion inhibitor injected volume remains 80～90mg/L.
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| CN201310169498.XA CN103241846B (en) | 2013-05-09 | 2013-05-09 | Composite scale and corrosion inhibitor |
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| CN201310169498.XA CN103241846B (en) | 2013-05-09 | 2013-05-09 | Composite scale and corrosion inhibitor |
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| CN103241846B CN103241846B (en) | 2015-04-22 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864232A (en) * | 2014-03-11 | 2014-06-18 | 北京绿色快车国际橡塑制品有限公司 | General corrosion and scale inhibitor for purifying circulating water and preparation and application thereof |
| CN105621637A (en) * | 2016-01-25 | 2016-06-01 | 延长油田股份有限公司 | Anticorrosion scaling inhibitor and preparation method thereof |
| CN107055821A (en) * | 2017-06-01 | 2017-08-18 | 北京市龙源科创石油技术有限公司 | Recirculated cooling water non-phosphorus scale and corrosion inhibitor and its application method |
| CN107244753A (en) * | 2017-07-20 | 2017-10-13 | 国网吉林省电力有限公司电力科学研究院 | The special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant |
| CN111807528A (en) * | 2020-07-25 | 2020-10-23 | 江苏姚氏环保技术有限公司 | Efficient scale remover and preparation method thereof |
| CN112501624A (en) * | 2020-10-20 | 2021-03-16 | 福州盈科水处理工程有限公司 | Prefilming agent for acid-washed industrial circulating water pipeline |
| CN113830906A (en) * | 2021-10-29 | 2021-12-24 | 福州盈科水处理工程有限公司 | Novel corrosion and scale inhibitor and preparation method and application thereof |
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| JPS52123390A (en) * | 1976-04-09 | 1977-10-17 | Katayama Chemical Works Co | Scale preventing agents |
| CN1565994A (en) * | 2003-06-18 | 2005-01-19 | 中国石油天然气股份有限公司 | Polynary composite water treatment agent |
| CN101117256A (en) * | 2007-07-20 | 2008-02-06 | 南京市第一精细化工公司精细化工厂 | Fully-organic inhibition dirty-proof industrial water conditioning agent and method for making same |
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Patent Citations (5)
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| JPS52123390A (en) * | 1976-04-09 | 1977-10-17 | Katayama Chemical Works Co | Scale preventing agents |
| CN1565994A (en) * | 2003-06-18 | 2005-01-19 | 中国石油天然气股份有限公司 | Polynary composite water treatment agent |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864232A (en) * | 2014-03-11 | 2014-06-18 | 北京绿色快车国际橡塑制品有限公司 | General corrosion and scale inhibitor for purifying circulating water and preparation and application thereof |
| CN103864232B (en) * | 2014-03-11 | 2015-06-10 | 北京绿色快车国际橡塑制品有限公司 | General corrosion and scale inhibitor for purifying circulating water and preparation and application thereof |
| CN105621637A (en) * | 2016-01-25 | 2016-06-01 | 延长油田股份有限公司 | Anticorrosion scaling inhibitor and preparation method thereof |
| CN105621637B (en) * | 2016-01-25 | 2018-05-25 | 延长油田股份有限公司 | A kind of antiseptic corrosion inhibitor and preparation method thereof |
| CN107055821A (en) * | 2017-06-01 | 2017-08-18 | 北京市龙源科创石油技术有限公司 | Recirculated cooling water non-phosphorus scale and corrosion inhibitor and its application method |
| CN107244753A (en) * | 2017-07-20 | 2017-10-13 | 国网吉林省电力有限公司电力科学研究院 | The special special efficacy environment-friendly type organic anti-scale corrosion inhibiter of heat supply network of steam power plant |
| CN111807528A (en) * | 2020-07-25 | 2020-10-23 | 江苏姚氏环保技术有限公司 | Efficient scale remover and preparation method thereof |
| CN112501624A (en) * | 2020-10-20 | 2021-03-16 | 福州盈科水处理工程有限公司 | Prefilming agent for acid-washed industrial circulating water pipeline |
| CN113830906A (en) * | 2021-10-29 | 2021-12-24 | 福州盈科水处理工程有限公司 | Novel corrosion and scale inhibitor and preparation method and application thereof |
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| CN103241846B (en) | 2015-04-22 |
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Inventor after: Yan Jinduo Inventor after: Hu Wenming Inventor after: Liu Yunliang Inventor after: Xu Xiaohu Inventor after: Yang Jingxian Inventor after: Gao Wei Inventor before: Yan Jinduo |
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