CN103060827A - 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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- CN103060827A CN103060827A CN2011103301153A CN201110330115A CN103060827A CN 103060827 A CN103060827 A CN 103060827A CN 2011103301153 A CN2011103301153 A CN 2011103301153A CN 201110330115 A CN201110330115 A CN 201110330115A CN 103060827 A CN103060827 A CN 103060827A
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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 the inhibiter production technical field, specifically the efficient carbon steel pickling corrosion inhibitor of a kind of environmentally friendly heterocyclic and the application thereof in order to prevent that carbon steel and goods thereof unnecessary corrosion and acid solution in acid cleaning process from consuming.
Background technology
Steel are used more and more extensive, in its product processing and application process, dilute sulphuric acid commonly used 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, " crossing erosion " phenomenon often appears in the acid cleaning process, and this process both can cause the corrosion of metallic substance, produced simultaneously a large amount of acid solution does great damage to environment.The generation that consumes and prevent harmful corrosion excessively of metal or acid in the acid cleaning process adds the clean-out system with corrosion inhibition and is economic, effective means in acid.The use of inhibiter can the corrosion of establishment metal in acidic medium, reduces the usage quantity of acid, improves pickling effect, extension device work-ing life, thereby be widely used in the industrial sectors such as chemical industry, oil, the energy, traffic, electromechanics, building.
At present in the clean-out system commonly used, mainly comprise the poisonous inorganic inhibition compounds such as chromic salt, nitrate, nitrite, and some organophosphor compounds, its discharging 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; development and application to inhibiter has proposed Secretary, and around the research and development of performance and economic goal environment not being consisted of destruction is the developing direction that the environmental friendliness inhibiter becomes following inhibiter.Therefore, develop new efficiently, the clean-out system of environmental protection becomes the new direction of exploitation.
Summary of the invention
The purpose 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: the inhibiter composition is the heterocyclic organic compound, and described compound is: Methylene blue is the heterocyclic organic compound.
The inhibiter composition is: Methylene blue.
Scavenging solution is acid solution, and the amount that adds inhibiter in every liter of acid solution is 0.001g-3.0g, and the submergence temperature is room temperature, and the time is 0.5-4h;
Wherein: acid solution is dilute hydrochloric acid, and concentration is 0.1mol/L-1mol/L.
Principle of the present invention is: Methylene blue is to have atom or the atomic groups such as amino, carbonyl, carboxyl, pyridine, thiazole ring, can effectively be adsorbed in steel surface, plays 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, has the outstanding advantages that consumption is low, efficient 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 that 4h gets final product in the pickle solution.
The highest inhibition efficiency that obtains 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 that submergence 4h gets final product in the pickle solution.
The highest inhibition efficiency that obtains 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 that 4h gets final product in the pickle solution.
The highest inhibition efficiency that obtains 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 that submergence 4h gets final product in the pickle solution.
The highest inhibition efficiency that obtains 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 that submergence 2h gets final product in the pickle solution.
The highest inhibition efficiency that obtains 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 that submergence 2h gets final product in the pickle solution.
The highest inhibition efficiency that obtains by experimental test is 90%, is shown as efficient clean-out system.
Claims (4)
1. heterocycle carbon steel pickling corrosion inhibitor, it is characterized in that: its activeconstituents is the Methylene blue in the heterocyclic organic compound.
2. according to carbon steel pickling corrosion inhibitor claimed in claim 1, it is characterized in that: described inhibiter is Methylene blue.
3. the application of a claim 1 or 2 described carbon steel pickling corrosion inhibitors is characterized in that: adopt the scavenging solution submergence that contains Methylene blue heterocyclic organic compound inhibiter to clean steel.
4. according to the application of carbon steel pickling corrosion inhibitor claimed in claim 3, it is characterized in that: scavenging solution is acid solution, and the amount that adds the Methylene blue inhibiter in the acid solution is 0.001g-3.0g/L, and the submergence temperature is room temperature, and the time is 0.5-4h;
Wherein: acid solution is dilute hydrochloric acid, and 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 true CN103060827A (en) | 2013-04-24 |
| CN103060827B CN103060827B (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
|---|
| E.E. EBENSO, ET AL: "Corrosion inhibition of mild steel in acidic media by some organic dyes", 《MATERIALS LETTERS 》 * |
| E.E. OGUZIE: "Corrosion inhibition of mild steel in hydrochloric acid solution by methylene blue dye", 《MATERIALS LETTERS》 * |
| 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》 * |
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| CN103060827B (en) | 2015-01-21 |
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Granted publication date: 20150121 Termination date: 20171021 |