CN104073809A - Plant type corrosion inhibitor from natural source and application thereof - Google Patents
Plant type corrosion inhibitor from natural source and application thereof Download PDFInfo
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- CN104073809A CN104073809A CN201410266806.5A CN201410266806A CN104073809A CN 104073809 A CN104073809 A CN 104073809A CN 201410266806 A CN201410266806 A CN 201410266806A CN 104073809 A CN104073809 A CN 104073809A
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- inhibiter
- acid
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- matrine
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Abstract
The invention relates to a corrosion inhibitor and in particular to a plant type corrosion inhibitor from a natural source and an application thereof. The corrosion inhibitor is a matrine and/or matrine derivative. The plant type corrosion inhibitor is used for preventing metal or acid liquid consumption in the pickling process of steel and steel products or corrosion caused by a condensed liquid formed in the natural gas conveying process. The plant type corrosion inhibitor which is environmentally friendly, low in cost, widely available and free of pollution and provided by the invention is used for preventing unexpected metal or acid liquid consumption in the pickling process of steel and steel products and corrosion caused by a condensed liquid formed in the natural gas conveying process.
Description
Technical field
The present invention relates to inhibiter, specifically a kind of natural origin Plant Inhibitors and application thereof.
Background technology
In the processing and application process of steels and their products, conventional dilute sulphuric acid or dilute hydrochloric acid carry out surface acid-washing, to remove surperficial oxide film or corrosion product, for fear of the generation that consumes and prevent harmful corrosion excessively of metal in acid cleaning process or acid, in acid, adding inhibiter is effective means.
In wet natural gas course of conveying, when pipe surface temperature is during lower than water vapour dew point, the water vapour in moisture can generate condensation water on inner-walls of duct.And the CO containing in Sweet natural gas
2dissolve in after condensation water, will easily cause serious corrosive pipeline problem.The inhibiter of annotating in wet natural gas course of conveying, be control corrosive pipeline one effectively, means reliably.
In at present conventional inhibiter, mainly comprise the inorganic inhibition compound containing poisonous chromate, and some organophosphor compounds, its discharge may cause the eutrophication of water body.The inhibiter of existing same domain mostly has toxic side effect, or synthetic cost is higher, does not possess the market competitiveness.
Therefore, develop new environmental protection, cheapness, wide material sources, non-harmful inhibiter is the new direction of current inhibiter exploitation.
Summary of the invention
The object of the present invention is to provide a kind of natural origin Plant Inhibitors and application thereof.
For achieving the above object, the technical solution used in the present invention is:
A kind of natural origin Plant Inhibitors, inhibiter is matrine and/or matrine derivative.Described matrine derivative is Oxymatyine.
Described inhibiter is matrine and Oxymatyine, and matrine and Oxymatyine are that 0:100-100:0 mixes by ratio of quality and the number of copies.
An application for Plant Inhibitors, described Plant Inhibitors is used for preventing that steels and their products is in acid cleaning process metal or acid solution consumption, or corrosion in the condensed liquid forming in natural gas transport process.
Specifically, inhibiter is joined in corrosive medium liquid to every m
3in corrosive medium liquid, add the inhibiter of 3g-300g, at 15 DEG C-60 DEG C, add sample to be cleaned, submergence 30min-3h, cleans its sample for the treatment of pickling.Described corrosive medium liquid is above-mentioned dilute hydrochloric acid, dilute sulphuric acid or CO
2saturated NACE solution.
Further, inhibiter being joined to concentration is 0.10-1.0kmol/m
3corrosive medium liquid in, every m
3in corrosive medium liquid, add the inhibiter of 30g-300g, at 15 DEG C-45 DEG C, add carbon steel sample to be cleaned, submergence 30min-3h, cleans its carbon steel sample for the treatment of pickling.Described corrosive medium liquid is hydrochloric acid, sulfuric acid.
Further, inhibiter is joined to CO
2in saturated acid condensed liquid, every m
3in condensed liquid, add the inhibiter of 3g-30g, at 30 DEG C-60 DEG C, add natural gas line sample to be cleaned, soak 30min-3h, make it carry out inhibition to natural gas line.Described CO
2saturated acid condensed liquid is CO
2saturated NACE solution.Wherein, NACE solution is 5% (mass percent) NaCl and 0.5% (mass percent) CH
3cOOH.
Matrine described above is to be made up through organic solvent extraction such as ethanol of the dry root of leguminous plants kuh-seng, plant, fruit, is that outward appearance is the alkaloid of white powder, has the several functions such as insecticidal activity, fungicidal activity, coordinate plant growth function.Can be used as low toxicity, low residue, the use of environment-friendly type Study of Natural Plant Pesticides, to animal and fish safety, to people, animal low toxicity.In matrine and Oxymatrine base molecule, all have 2 nitrogen-atoms, one is tertiary amine nitrogen, and one is amide nitrogen.Oxymatyine is the oxynitride of matrine.Both structural formulas are as follows:
Principle of the present invention is: matrine and derivative thereof be have quinoline in the heterogeneous ring compound of western pyridine class formation, share a nitrogen-atoms by two piperidine rings and condense and form.Molecule contains the heteroatoms such as heterocycle and nitrogen, oxygen, can effectively be adsorbed in steel surface, plays corrosion inhibition.
The invention has the beneficial effects as follows:
Provided by the invention have an environmental protection, cheapness, wide material sources, the natural origin Plant Inhibitors of nuisanceless feature, in order to prevent steels and their products unnecessary metal or acid solution consumption in acid cleaning process, and corrosion in the condensed liquid forming in natural gas transport process.
Inhibiter of the present invention is for the surface acid-washing of steels and their products, can prevent the excessive etch of metal and consuming excessively of acid solution in acid cleaning process, (pipeline), the present invention has low price, consumption is low, efficiency is high, continuous action ability is strong outstanding advantages.Product of the present invention is a kind of water-soluble alkaloid, harmless to environment and biological nontoxic, meets the trend of inhibiter development, has a good application prospect.
Proportioning of the present invention is simple, main component matrine and Oxymatyine wide material sources, and market quotes in 2014 is at 1800 yuan/kilogram, and material cost is lower.Inhibition efficiency of the present invention is high, onset concentration is low, and actual use cost is lower; In addition, inhibition acid solution can be passed through storng-acid cation exchange resin extract total alkaloids after using, and can utilize the two different solubility in ether of matrine and Oxymatyine, and carry out the separating of matrine and Oxymatyine, purification, recovery and use, further reduce use cost.
Inhibiter of the present invention, by extracting in the dry root of leguminous plants kuh-seng, plant, fruit, is natural origin plant extract material, is nontoxic green corrosion inhibitor.Compared with the inhibiter of current chemosynthesis, it can decompose rapidly in the Nature, and final product is carbonic acid gas and water, does not have the environmental problem after use, harmless to environment and biological nontoxic, meets the trend of cleaning agent developing, has a good application prospect.
The present invention is for the cleaning of all kinds of steel and products thereof, can effectively suppress consuming excessively of the harmful corrosion of metallic matrix in acid and acid solution, with at present conventional inhibiter comparison, there is consumption low, efficiency is high, and the outstanding advantages that continuous action ability is strong can Reusability.
Embodiment
The present invention carries out weight loss test according to GB10124-88 " Uniform Corrosion Method of Laboratory Immersion Test method ", and test scavenging solution is that concentration is 0.10-1.0kmol/m
3hydrochloric acid, sulphuric acid soln or CO
2(NACE solution is 5%NaCl+0.5%CH to saturated NACE solution
3cOOH), clean-out system is matrine and/or Oxymatyine, every m
3in pickle solution, add the inhibiter of 3g-300g, pipeline in test piece steels and their products or natural gas transport process, test temperature is 15 DEG C-60 DEG C, experimental period 30min-3h, pass through experimental test, matrine and/or Oxymatyine higher than 80%, are shown as efficient inhibiter to the highest inhibition efficiency of carbon steel.
Embodiment 1
Inhibiter is matrine and Oxymatyine, and both massfractions are the Oxymatyine that 10% matrine and massfraction are 90%.
Scavenging solution is dilute hydrochloric acid, and concentration is 0.50M, and scavenging solution consumption 1000L, adds inhibiter 125g, under 15 DEG C of conditions, No. 45 steel is cleaned, and submergence 3h, then carries out weight loss test and show that the highest inhibition efficiency is 90%.
Embodiment 2
Inhibiter is matrine and Oxymatyine, and both massfractions are the Oxymatyine that 50% matrine and massfraction are 50%.
Scavenging solution is dilute hydrochloric acid, and concentration is 1.0M, and scavenging solution consumption 1000L, adds inhibiter 250g, under 45 DEG C of conditions, No. 15 steel is cleaned, and submergence 2h, then carries out weight loss test and show that the highest inhibition efficiency is 95%.
Embodiment 3
Inhibiter is matrine and Oxymatyine, and both massfractions are the Oxymatyine that 50% matrine and massfraction are 50%.
Scavenging solution is dilute sulphuric acid, and concentration is 0.10M, and scavenging solution consumption 1000L, adds inhibiter 30g, under 35 DEG C of conditions, No. 45 steel is cleaned, and submergence 30min, then carries out weight loss test and show that the highest inhibition efficiency is 90%.
Embodiment 4
Inhibiter is matrine.
Scavenging solution is dilute sulphuric acid, and concentration is 0.5M, and scavenging solution consumption 1000L, adds inhibiter 300g, under 45 DEG C of conditions, No. 15 steel is cleaned, and submergence 2h, then carries out weight loss test and show that the highest inhibition efficiency is 96%.
Embodiment 5
Inhibiter is matrine and Oxymatyine, and both massfractions are the Oxymatyine that 90% matrine and massfraction are 10%.
Scavenging solution is CO
2saturated NACE solution, scavenging solution consumption 1000L, adds inhibiter 3g, under 30 DEG C of conditions, X80 steel is cleaned, and submergence 2h, then carries out weight loss test and show that the highest inhibition efficiency is 80%.
Embodiment 6
Inhibiter is matrine and Oxymatyine, and both massfractions are the Oxymatyine that 95% matrine and massfraction are 5%.
Scavenging solution is CO
2saturated NACE solution, scavenging solution consumption 1000L, adds inhibiter 5g, under 50 DEG C of conditions, X80 steel is cleaned, and submergence 3h, then carries out weight loss test and show that the highest inhibition efficiency is 90%.
The various embodiments described above are processed the pickle solution after sample, adopt storng-acid cation exchange resin to carry out wash-out according to prior art, reclaim inhibiter in each pickle solution.Reclaiming the inhibiter obtaining can reuse.
Claims (7)
1. a natural origin Plant Inhibitors, is characterized in that: inhibiter is matrine and/or matrine derivative.
2. by Plant Inhibitors claimed in claim 1, it is characterized in that: described matrine derivative is Oxymatyine.
3. an application for Plant Inhibitors claimed in claim 1, is characterized in that: described Plant Inhibitors is used for preventing that steels and their products is in acid cleaning process metal or acid solution consumption, or corrosion in the condensed liquid forming in natural gas transport process.
4. by the application of Plant Inhibitors claimed in claim 3, it is characterized in that: inhibiter is joined in corrosive medium liquid to every m
3in corrosive medium liquid, add the inhibiter of 3g-300g, at 15 DEG C-60 DEG C, add sample to be cleaned, submergence 30min-3h, cleans its sample for the treatment of pickling.
5. by the application of Plant Inhibitors claimed in claim 4, it is characterized in that: described corrosive medium liquid is dilute hydrochloric acid, dilute sulphuric acid or CO
2saturated NACE solution.
6. by the application of the Plant Inhibitors described in claim 4 or 5, it is characterized in that: it is 0.10-1.0kmol/m that inhibiter is joined to concentration
3corrosive medium liquid in, every m
3in corrosive medium liquid, add the inhibiter of 30g-300g, at 15 DEG C-45 DEG C, add carbon steel sample to be cleaned, submergence 30min-3h, cleans its carbon steel sample for the treatment of pickling; Described corrosive medium liquid is hydrochloric acid, sulfuric acid.
7. by the application of the Plant Inhibitors described in claim 4 or 5, it is characterized in that: inhibiter is joined to CO
2in saturated acid condensed liquid, every m
3in condensed liquid, add the inhibiter of 3g-30g, at 30 DEG C-60 DEG C, add natural gas line sample to be cleaned, soak 30min-3h, make it carry out inhibition to natural gas line; Described CO
2saturated acid condensed liquid is CO
2saturated NACE solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410266806.5A CN104073809A (en) | 2014-06-16 | 2014-06-16 | Plant type corrosion inhibitor from natural source and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410266806.5A CN104073809A (en) | 2014-06-16 | 2014-06-16 | Plant type corrosion inhibitor from natural source and application thereof |
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|---|---|
| CN104073809A true CN104073809A (en) | 2014-10-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480472A (en) * | 2014-12-11 | 2015-04-01 | 中国科学院宁波材料技术与工程研究所 | Biological metal corrosion inhibitor and application thereof |
| CN110863208A (en) * | 2019-12-04 | 2020-03-06 | 哈尔滨工业大学（威海） | Carbon steel pickling corrosion inhibitor based on polygonatum polysaccharide |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985693A (en) * | 2010-09-25 | 2011-03-16 | 西安石油大学 | Preparation method and application of metal chelate compound of cigarette end extract |
-
2014
- 2014-06-16 CN CN201410266806.5A patent/CN104073809A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985693A (en) * | 2010-09-25 | 2011-03-16 | 西安石油大学 | Preparation method and application of metal chelate compound of cigarette end extract |
Non-Patent Citations (2)
| Title |
|---|
| 王瑞苓，等.: "苦参提取物在盐酸介质中对钢的缓蚀作用", 《玉溪师范学院学报》 * |
| 霍光华，等: "天然抗氧化剂的开发研究进展", 《郑州工程学院学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480472A (en) * | 2014-12-11 | 2015-04-01 | 中国科学院宁波材料技术与工程研究所 | Biological metal corrosion inhibitor and application thereof |
| CN110863208A (en) * | 2019-12-04 | 2020-03-06 | 哈尔滨工业大学（威海） | Carbon steel pickling corrosion inhibitor based on polygonatum polysaccharide |
| CN110863208B (en) * | 2019-12-04 | 2022-08-09 | 威海创惠环保科技有限公司 | Carbon steel pickling corrosion inhibitor based on polygonatum polysaccharide |
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Application publication date: 20141001 |