CN102766876B - Environment-friendly pickling inhibitor and application thereof in pickling of carbon steel - Google Patents
Environment-friendly pickling inhibitor and application thereof in pickling of carbon steel Download PDFInfo
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- CN102766876B CN102766876B CN201210258289.8A CN201210258289A CN102766876B CN 102766876 B CN102766876 B CN 102766876B CN 201210258289 A CN201210258289 A CN 201210258289A CN 102766876 B CN102766876 B CN 102766876B
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Abstract
The invention discloses an environment-friendly pickling inhibitor and an application of the environment-friendly pickling inhibitor in the pickling of carbon steel, to effectively solve the problem of the pickling of the carbon steel. The chemical components of the environment-friendly pickling inhibitor include water and any two or three of urotropin, cation surfactant, dodecyl dimethylbenzyl ammonium chloride, octadecyl dimethylbenzyl ammonium chloride, dodecyl dimethylbenzyl ammonium bromide, myristyl dimethyl ammonium chlorid; the method for application of the environment-friendly pickling inhibitor to the pickling of the carbon steel comprises the steps: adding the pickling inhibitor into a hydrochloric acid solution or a sulphuric acid solution with a concentration of 1.0-10mol/L according to the ratio of 1L of acid solution to 0.05g-2g of the pickling inhibitor; immersing the carbon steel to be washed or a carbon steel product in the acid liquid added with the pickling inhibitor; and controlling the temperature to be 20-70 DEG C and immersing time to be 5-20min. The pickling inhibitor provided by the invention is a pickling inhibitor friendly to the environment. The pickling inhibitor is non-toxic and harmless, is environment friendly, does not cause environmental problems after application, and conforms to the development trend of the green corrosion inhibitors.
Description
Technical field
The present invention relates to restrainer and application thereof, particularly a kind of environment-friendly type carbon steel pickling corrosion inhibitor and the application in carbon steel pickling thereof
Background technology
Pickling is to remove the conventional pretreatment technologies such as metallic surface corrosion, oxide compound, in industries such as metallic substance, machinery, metallurgy, electric power, chemical industry, has a wide range of applications.In pickling, conventional acid has hydrochloric acid, sulfuric acid, nitric acid etc., they are in clean metal surface, also metallic substance is produced to overpickling, the hydrogen that metal and acid-respons generate can cause the hydrogen embrittlement corrosion of metal, and take a large amount of acid mists out of, have strong irritating property smell, affect Working environment, corrosion workshop equipment, and cause a large amount of useless consumption of hydrochloric acid.Therefore, people are everlasting in pickle solution and add inhibiter, to suppress the corrosion of metal in acidic medium, reduce sour usage quantity, improve pickling effect.
The existing restrainer overwhelming majority is the organic compound containing elements such as oxygen, nitrogen, sulphur, phosphorus, as amine, Thiourea, aldoketones, imidazolines, pyridine and quinoline quaternary ammonium salt etc., mostly need complicated building-up process, production cost is higher, does not possess the market competitiveness.And restrainer also contains propiolic alcohol, be highly toxic substance, be not suitable with global environmental requirement.And environment-friendly type organic inhibitor is not only in use environmentally friendly, in production and preparation process, can not cause detrimentally affect to environment yet.Therefore, new efficient, environment-friendly type organic inhibitor is just being subject to people and more and more paying close attention to.
Open (bulletin) number: the CN102363888 of Chinese patent discloses inhibiter and the preparation method in a kind of acid cleaning process, and inhibiter main component comprises Virahol, propiolic alcohol, halogenide, reductive agent and inhibitor, but propiolic alcohol wherein belongs to highly toxic substance; Open (bulletin) number: the CN102134722 of Chinese patent discloses a kind of carbon steel pickling corrosion inhibitor and application thereof, inhibiter composition is aniline aldehyde polymer, apply aborning more, its corrosion mitigating effect is good, but from being produced into originally, aniline aldehydes inhibiter all will pass through complicated building-up process, and production cost is higher, and production process can produce the three wastes, contaminate environment.
Summary of the invention
The invention provides a kind of environment-friendly type carbon steel pickling corrosion inhibitor and the application in carbon steel pickling thereof, effectively solve carbon steel pickling problem.
Its chemical composition of environment-friendly type carbon steel pickling corrosion inhibitor provided by the invention is: urotropine; Any two in cats product dodecyl benzyl dimethyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, four kinds of compounds of tetradecyl dimethyl benzyl ammonium chloride or three kinds; Water.
The quality percentage composition of the chemical composition of described environment-friendly type carbon steel pickling corrosion inhibitor is as follows:
The application method of described environment-friendly type carbon steel pickling corrosion inhibitor in carbon steel pickling is as follows:
According to adding the consumption of inhibiter 0.05-2g in every liter of acid solution, inhibiter is joined in the hydrochloric acid or sulphuric acid soln that concentration is 1.0-10mol/L, with the acid solution submergence that is added with inhibiter carbon steel to be cleaned or carbon steel goods, temperature is controlled at 20-70 ℃, Immersion time 5-20min.
Principle of the present invention is: cats product can effectively be adsorbed in steel surface, forms protective membrane, plays corrosion inhibition; Have and clean and affinity interaction; Can bubble, acid mist is had to covering effect.
Compared with prior art, its significant beneficial effect is embodied in the present invention:
1. it is wide that environment-friendly type carbon steel pickling corrosion inhibitor adapts to pickle solution concentration range;
2. environment-friendly type carbon steel pickling corrosion inhibitor is environmentally friendly organic inhibitor, compares with at present conventional inorganic inhibitor, nontoxic, environmentally friendly, does not have the environmental problem after use, meets the development trend of green corrosion inhibitor;
3. the raw material of environment-friendly type carbon steel pickling corrosion inhibitor is cheap and easy to get, and cost is low;
4. environment-friendly type carbon steel pickling corrosion inhibitor is for steel surface pickling, add a small amount of inhibiter and just can effectively suppress consuming excessively of the harmful corrosion of metallic substance in acid cleaning process and acid solution, inhibiter comparison with at present conventional, has consumption low, the high outstanding advantage of inhibition efficiency;
5. the corrosion inhibition of environment-friendly type carbon steel pickling corrosion inhibitor is stable, can withstand temp in acid cleaning process, the variation of the condition such as acid strength, do not affect the corrosion mitigating effect of inhibiter.
Embodiment
With embodiment, describe the present invention in detail below, embodiment carries out zero-G test according to GB10124-88 < < Uniform Corrosion Method of Laboratory Immersion Test method > >.
Embodiment 1
Environment-friendly type carbon steel pickling corrosion inhibitor chemical composition quality percentage composition:
Urotropine 20%; Cats product dodecyl benzyl dimethyl ammonium chloride 25%; Stearyl dimethyl benzyl ammonium chloride 5%; Water 50%.
The application method of environment-friendly type carbon steel pickling corrosion inhibitor in carbon steel pickling:
The inhibiter that above-mentioned chemical composition is mixed to get is according to adding the consumption of inhibiter 1g in every liter of acid solution, be dissolved in pickle solution, pickle solution is hydrochloric acid soln, and concentration is 8mol/L, pickle solution consumption 100L, under 70 ℃ of conditions, carbon steel to be cleaned is immersed in to pickle solution in 5min.
The inhibition efficiency 99% obtaining by experimental test, is shown as efficient inhibiter.
Embodiment 2
Environment-friendly type carbon steel pickling corrosion inhibitor chemical composition quality percentage composition:
Urotropine 25%; Cats product dodecyl benzyl dimethyl ammonium chloride 20%; Stearyl dimethyl benzyl ammonium chloride 5%; Water 50%.
The application method of environment-friendly type carbon steel pickling corrosion inhibitor in carbon steel pickling:
The inhibiter that above-mentioned chemical composition is mixed to get is according to adding the consumption of inhibiter 0.5g in every liter of acid solution, be dissolved in pickle solution, pickle solution is hydrochloric acid soln, and concentration is 4mol/L, pickle solution consumption 100L, under 30 ℃ of conditions, carbon steel to be cleaned is immersed in to pickle solution in 15min.
The inhibition efficiency 97% obtaining by experimental test, is shown as efficient inhibiter.
Embodiment 3
The quality percentage composition of environment-friendly type carbon steel pickling corrosion inhibitor chemical composition:
Urotropine 10%; Cats product dodecyl dimethyl benzyl ammonium bromide 15%; Tetradecyl dimethyl benzyl ammonium chloride 10%; Water 65%.
The application method of environment-friendly type carbon steel pickling corrosion inhibitor in carbon steel pickling:
The inhibiter that above-mentioned chemical composition is mixed to get is according to adding the consumption of inhibiter 1g in every liter of acid solution, be dissolved in pickle solution, pickle solution is hydrochloric acid soln, and concentration is 4mol/L, pickle solution consumption 100L, under 60 ℃ of conditions, carbon steel to be cleaned is immersed in to pickle solution in 10min.
The inhibition efficiency 93% obtaining by experimental test, is shown as efficient inhibiter.
Embodiment 4
The quality percentage composition of environment-friendly type carbon steel pickling corrosion inhibitor chemical composition:
Urotropine 15%; Cats product dodecyl dimethyl benzyl ammonium bromide 15%; Tetradecyl dimethyl benzyl ammonium chloride 5%; Water 65%.
The application method of environment-friendly type carbon steel pickling corrosion inhibitor in carbon steel pickling:
The inhibiter that above-mentioned chemical composition is mixed to get is according to adding the consumption of inhibiter 0.5g in every liter of acid solution, be dissolved in pickle solution, pickle solution is hydrochloric acid soln, and concentration is 4mol/L, pickle solution consumption 100L, under 40 ℃ of conditions, carbon steel to be cleaned is immersed in to pickle solution in 15min.
The inhibition efficiency 95% obtaining by experimental test, is shown as efficient inhibiter.
Embodiment 5
The quality percentage composition of environment-friendly type carbon steel pickling corrosion inhibitor chemical composition:
Urotropine 5%; Cats product dodecyl dimethyl benzyl ammonium bromide 15%; Stearyl dimethyl benzyl ammonium chloride 5%; Tetradecyl dimethyl benzyl ammonium chloride 5%; Water 70%.
The application method of environment-friendly type carbon steel pickling corrosion inhibitor in carbon steel pickling:
The inhibiter that above-mentioned chemical composition is mixed to get is according to adding the consumption of inhibiter 2g in every liter of acid solution, be dissolved in pickle solution, pickle solution is hydrochloric acid soln, and concentration is 6mol/L, pickle solution consumption 100L, under 60 ℃ of conditions, carbon steel to be cleaned is immersed in to pickle solution in 5min.
The inhibition efficiency 98% obtaining by experimental test, is shown as efficient inhibiter.
Embodiment 6
The quality percentage composition of environment-friendly type carbon steel pickling corrosion inhibitor chemical composition:
Urotropine 10%; Cats product dodecyl dimethyl benzyl ammonium bromide 10%; Stearyl dimethyl benzyl ammonium chloride 5%; Tetradecyl dimethyl benzyl ammonium chloride 5%; Water 70%.
The application method of environment-friendly type carbon steel pickling corrosion inhibitor in carbon steel pickling:
The inhibiter that above-mentioned chemical composition is mixed to get is according to adding the consumption of inhibiter 0.5g in every liter of acid solution, be dissolved in pickle solution, pickle solution is hydrochloric acid soln, and concentration is 6mol/L, pickle solution consumption 100L, under 30 ℃ of conditions, carbon steel to be cleaned is immersed in to pickle solution in 15min.
The inhibition efficiency 96% obtaining by experimental test, is shown as efficient inhibiter.
Claims (2)
1. an environment-friendly type carbon steel pickling corrosion inhibitor, is characterized in that the chemical composition of this inhibiter is: urotropine; Any two in cats product dodecyl benzyl dimethyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, four kinds of compounds of tetradecyl dimethyl benzyl ammonium chloride or three kinds; Water, chemical composition quality percentage composition is as follows:
2. the application method of environment-friendly type carbon steel pickling corrosion inhibitor claimed in claim 1 in carbon steel pickling, is characterized in that the method is:
According to adding the consumption of inhibiter 0.05-2g in every liter of acid solution, inhibiter is joined in the hydrochloric acid or sulphuric acid soln that concentration is 1.0-10mol/L, with the acid solution submergence that is added with inhibiter carbon steel to be cleaned or carbon steel goods, temperature is controlled at 20-70 ℃, Immersion time 5-20min.
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| CN104451724B (en) * | 2012-12-13 | 2016-08-24 | 宁夏中科天际防雷股份有限公司 | The water electrolysis polar board surface processing method of the corrosion resistance after pole plate nickel plating can be improved |
| CN104962931A (en) * | 2015-07-03 | 2015-10-07 | 桂林理工大学 | Preparation method of indigo carmine/triethanolamine compounded corrosion inhibitor for 1045 carbon steel hydrochloric acid pickling solution |
| CN104947127A (en) * | 2015-07-15 | 2015-09-30 | 龚灿锋 | Metal material cleaning liquid |
| CN105040007B (en) * | 2015-07-30 | 2018-03-30 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method that addition carries out pickling with corrosion inhibiter and with addition in the acid with corrosion inhibiter in acid |
| CN104988520B (en) * | 2015-07-30 | 2018-05-01 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of composite corrosion inhibitor and the method that pickling is carried out with the composite corrosion inhibitor |
| CN105297058A (en) * | 2015-11-09 | 2016-02-03 | 广东新球清洗科技股份有限公司 | Environment-friendly easily-rinsed easily-cleaned water draining agent and preparation method thereof and application |
| CN105951106A (en) * | 2016-06-06 | 2016-09-21 | 上海理工大学 | Special hydrochloric acid pickling corrosion inhibitor for spring steel |
| CN106011885A (en) * | 2016-08-16 | 2016-10-12 | 四川理工学院 | Novel composite corrosion inhibitor for inhibiting corrosion of carbon steel in pickling process |
| CN107541736B (en) * | 2017-08-30 | 2019-04-09 | 青岛沃尔特节能工程技术有限公司 | A kind of station boiler pickling solid corrosion inhibitor |
| CN113005461A (en) * | 2019-12-20 | 2021-06-22 | 齐鲁工业大学 | Carbon steel descaling and cleaning corrosion inhibitor and cleaning agent |
| CN113005462B (en) * | 2019-12-20 | 2023-03-24 | 齐鲁工业大学 | Descaling and cleaning corrosion inhibitor and cleaning agent for 201 stainless steel |
| CN114032551A (en) * | 2022-01-12 | 2022-02-11 | 西南石油大学 | Preparation method of ternary composite quaternary ammonium salt corrosion inhibitor |
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| US6454870B1 (en) * | 2001-11-26 | 2002-09-24 | General Electric Co. | Chemical removal of a chromium oxide coating from an article |
| CN101634030B (en) * | 2009-01-22 | 2011-03-30 | 湖南省湘电试验研究院有限公司 | Acid-cleaning inhibiter for cleaning boiler and use method thereof |
| CN101608313A (en) * | 2009-07-14 | 2009-12-23 | 南京科盛环保科技有限公司 | A kind of high-efficiency solid pickling inhibitor for many metals |
| CN101838526B (en) * | 2010-05-18 | 2013-04-24 | 中国石油天然气股份有限公司 | Corrosion inhibiting and scale clearing scale inhibitor for oil wells |
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