CN103060827B - Heterocyclic carbon steel acid pickling inhibitor and application thereof - Google Patents
Heterocyclic carbon steel acid pickling inhibitor and application thereof Download PDFInfo
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- CN103060827B CN103060827B CN201110330115.3A CN201110330115A CN103060827B CN 103060827 B CN103060827 B CN 103060827B CN 201110330115 A CN201110330115 A CN 201110330115A CN 103060827 B CN103060827 B CN 103060827B
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- carbon steel
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- acid pickling
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Abstract
The invention discloses a carbon steel acid pickling inhibitor and application thereof. The carbon steel acid pickling inhibitor is used for preventing carbon steel and products thereof from unnecessary corrosion and acid liquor consumption in an acid pickling process. The inhibitor is methyl blue, namely a heterocyclic organic compound. The application method of the inhibitor is characterized in that the cleaning liquor is diluted hydrochloric acid with concentration of 0.10-1.0kmol/m<3>, 0.010-2.0kg/m<3> of cleaning agent is added, the temperature is controlled between 25 DEG C and 30 DEG C, and carbon steel and products thereof to be cleaned are added and are immersed for 1-4 hours. The product is used for cleaning surfaces of carbon steel and products thereof, can prevent excessive erosion of metals and excessive consumption of acid liquor in a cleaning process, and has the prominent advantages of low dosage, high efficiency and strong sustained action capacity.
Description
Technical field
The present invention relates to inhibiter production technical field, the efficient carbon steel pickling corrosion inhibitor of the environmentally friendly heterocyclic of one consumed in order to the corrosion that prevents carbon steel and goods thereof unnecessary in acid cleaning process and acid solution specifically and application thereof.
Background technology
Steel application is more and more extensive, in its Product processing and application process, conventional dilute sulphuric acid or dilute hydrochloric acid carry out surface cleaning, to remove oxide film or the corrosion product on surface, because strong acid all has corrosive nature to hardware, often occur " crossing erosion " phenomenon in acid cleaning process, this process both can cause the corrosion of metallic substance, the a large amount of acid solutions simultaneously produced, do great damage to environment.The generation consuming and prevent unwanted corrosion excessively of metal or acid in acid cleaning process, in acid, add the clean-out system with corrosion inhibition is economic, effective means.The use of inhibiter effectively can suppress the corrosion of metal in acidic medium, reduces the usage quantity of acid, improves pickling effect, extension device work-ing life, is thus widely used in the industrial sectors such as chemical industry, oil, the energy, traffic, electromechanics, building.
In clean-out system conventional at present, mainly comprise the inorganic corrosion inhibiting compound that chromic salt, nitrate, nitrite etc. are poisonous, and some organophosphor compounds, its discharge may cause the eutrophication of water body, the clean-out system of existing same domain mostly has toxic side effect, do not possess the market competitiveness, be not suitable with global environmental requirement.
Along with the enhancing of human environment protection consciousness and going deep into of the idea of sustainable development; new requirement is proposed to the development and application of inhibiter, around performance and economic goal research and development, the developing direction that destruction and environmental friendliness inhibiter become following inhibiter is not formed to environment.Therefore, develop new efficient, the clean-out system of environmental protection becomes the new direction of exploitation.
Summary of the invention
The object of this invention is to provide a kind of environmentally friendly heterocycle carbon steel pickling corrosion inhibitor and application thereof.
Technical scheme of the present invention is: inhibiter composition is heterocyclic organic compound, and described compound is: Methylene blue, is heterocyclic organic compound.
Inhibiter composition is: Methylene blue.
Scavenging solution is acid solution, and the amount adding inhibiter in often liter of acid solution is 0.001g-3.0g, and submergence temperature is room temperature, and the time is 0.5-4h;
Wherein: acid solution is dilute hydrochloric acid, concentration is 0.1mol/L-1mol/L.
Principle of the present invention is: Methylene blue has atom or the atomic groups such as amino, carbonyl, carboxyl, pyridine, thiazole ring, effectively can be adsorbed in steel surface, play corrosion inhibition.
Product of the present invention is used for the surface cleaning of carbon steel and products thereof, can prevent the excessive etch of metal and consuming excessively of acid solution in cleaning process, have the outstanding advantages that consumption is low, efficiency is high, continuous action ability is strong.
Embodiment
The present invention carries out zero-G test according to GB10124-88 " Uniform Corrosion Method of Laboratory Immersion Test method ".
Embodiment 1
Pickle solution is dilute hydrochloric acid, and concentration is 0.1M, and pickle solution consumption 100L, adds Methylene blue 30g, at ambient temperature steel to be cleaned is immersed in 4h in pickle solution.
The highest inhibition efficiency obtained by experimental test is 97%, is shown as efficient clean-out system.
Embodiment 2
Pickle solution is dilute hydrochloric acid, and concentration is 0.1M, and pickle solution consumption 100L, adds Methylene blue 15g, at ambient temperature steel to be cleaned is immersed in submergence 4h in pickle solution.
The highest inhibition efficiency obtained by experimental test is 94%, is shown as efficient clean-out system.
Embodiment 3
Pickle solution is dilute hydrochloric acid, and concentration is 0.5M, and pickle solution consumption 100L, adds Methylene blue 30g, at ambient temperature steel to be cleaned is immersed in 4h in pickle solution.
The highest inhibition efficiency obtained by experimental test is 95%, is shown as efficient clean-out system.
Embodiment 4
Pickle solution is dilute hydrochloric acid, and concentration is 0.5M, and pickle solution consumption 100L, adds Methylene blue 15g, at ambient temperature steel to be cleaned is immersed in submergence 4h in pickle solution.
The highest inhibition efficiency obtained by experimental test is 92%, is shown as efficient clean-out system.
Embodiment 5
Pickle solution is dilute hydrochloric acid, and concentration is 1M, and pickle solution consumption 100L, adds Methylene blue 30g, at ambient temperature steel to be cleaned is immersed in submergence 2h in pickle solution.
The highest inhibition efficiency obtained by experimental test is 92%, is shown as efficient clean-out system.
Embodiment 6
Pickle solution is dilute hydrochloric acid, and concentration is 1M, and pickle solution consumption 100L, adds Methylene blue 20g, at ambient temperature steel to be cleaned is immersed in submergence 2h in pickle solution.
The highest inhibition efficiency obtained by experimental test is 90%, is shown as efficient clean-out system.
Claims (2)
1. an application for carbon steel pickling corrosion inhibitor, is characterized in that: adopt the scavenging solution submergence cleaning steel containing Methylene blue heterocyclic organic compound inhibiter.
2. according to the application of carbon steel pickling corrosion inhibitor according to claim 1, it is characterized in that: scavenging solution is acid solution, the amount adding Methylene blue inhibiter in acid solution is 0.001g/L ~ 3.0g/L, and submergence temperature is room temperature, and the time is 0.5-4h;
Wherein: acid solution is dilute hydrochloric acid, concentration is 0.1mol/L-1mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110330115.3A CN103060827B (en) | 2011-10-21 | 2011-10-21 | Heterocyclic carbon steel acid pickling inhibitor and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110330115.3A CN103060827B (en) | 2011-10-21 | 2011-10-21 | Heterocyclic carbon steel acid pickling inhibitor and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103060827A CN103060827A (en) | 2013-04-24 |
| CN103060827B true CN103060827B (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201110330115.3A Expired - Fee Related CN103060827B (en) | 2011-10-21 | 2011-10-21 | Heterocyclic carbon steel acid pickling inhibitor and application thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN103060827B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538718A (en) * | 2009-04-30 | 2009-09-23 | 西北工业大学 | Carbon steel restrainer and use method thereof |
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2011
- 2011-10-21 CN CN201110330115.3A patent/CN103060827B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538718A (en) * | 2009-04-30 | 2009-09-23 | 西北工业大学 | Carbon steel restrainer and use method thereof |
Non-Patent Citations (3)
| Title |
|---|
| Corrosion inhibition of mild steel in acidic media by some organic dyes;E.E. Ebenso, et al;《Materials Letters 》;20050313;第59卷;全文 * |
| Corrosion inhibition of mild steel in hydrochloric acid solution by methylene blue dye;E.E. Oguzie;《Materials Letters》;20041230;第59卷;全文 * |
| 黄克靖等.甲基蓝共振瑞利散射法测定人免疫球蛋白.《信阳师范学院学报:自然科学版》.2011,第24卷(第2期),第238-240页. * |
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| CN103060827A (en) | 2013-04-24 |
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