CN103993323A - Compound corrosion inhibitor applicable to sewage medium and preparation method thereof - Google Patents
Compound corrosion inhibitor applicable to sewage medium and preparation method thereof Download PDFInfo
- Publication number
- CN103993323A CN103993323A CN201410238332.3A CN201410238332A CN103993323A CN 103993323 A CN103993323 A CN 103993323A CN 201410238332 A CN201410238332 A CN 201410238332A CN 103993323 A CN103993323 A CN 103993323A
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- Prior art keywords
- corrosion inhibitor
- composite corrosion
- linseed oil
- acid
- medium
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- 230000007797 corrosion Effects 0.000 title claims abstract description 73
- 238000005260 corrosion Methods 0.000 title claims abstract description 73
- 239000003112 inhibitor Substances 0.000 title claims abstract description 54
- 239000010865 sewage Substances 0.000 title claims description 31
- 238000002360 preparation method Methods 0.000 title claims description 19
- 150000001875 compounds Chemical class 0.000 title abstract description 4
- 235000021388 linseed oil Nutrition 0.000 claims abstract description 31
- 239000000944 linseed oil Substances 0.000 claims abstract description 31
- 150000001408 amides Chemical class 0.000 claims abstract description 18
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920000805 Polyaspartic acid Polymers 0.000 claims abstract description 11
- 108010064470 polyaspartate Proteins 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims description 48
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 15
- ASCFNMCAHFUBCO-UHFFFAOYSA-N 2-phosphoglycolic acid Chemical compound OC(=O)COP(O)(O)=O ASCFNMCAHFUBCO-UHFFFAOYSA-N 0.000 claims description 12
- RZLVQBNCHSJZPX-UHFFFAOYSA-L zinc sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Zn+2].[O-]S([O-])(=O)=O RZLVQBNCHSJZPX-UHFFFAOYSA-L 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 229960001124 trientine Drugs 0.000 claims description 3
- 239000008096 xylene Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000005764 inhibitory process Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 abstract 1
- 150000004688 heptahydrates Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 229910000975 Carbon steel Inorganic materials 0.000 description 11
- 239000010962 carbon steel Substances 0.000 description 11
- 230000000116 mitigating effect Effects 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 235000019198 oils Nutrition 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 150000003751 zinc Chemical class 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- RREANTFLPGEWEN-MBLPBCRHSA-N 7-[4-[[(3z)-3-[4-amino-5-[(3,4,5-trimethoxyphenyl)methyl]pyrimidin-2-yl]imino-5-fluoro-2-oxoindol-1-yl]methyl]piperazin-1-yl]-1-cyclopropyl-6-fluoro-4-oxoquinoline-3-carboxylic acid Chemical compound COC1=C(OC)C(OC)=CC(CC=2C(=NC(\N=C/3C4=CC(F)=CC=C4N(CN4CCN(CC4)C=4C(=CC=5C(=O)C(C(O)=O)=CN(C=5C=4)C4CC4)F)C\3=O)=NC=2)N)=C1 RREANTFLPGEWEN-MBLPBCRHSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 1
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 150000002462 imidazolines Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 229960004232 linoleic acid Drugs 0.000 description 1
- 229960004488 linolenic acid Drugs 0.000 description 1
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000006239 protecting group Chemical group 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
Abstract
The invention discloses a compound corrosion inhibitor prepared from the following raw materials by mass fraction: 30-50% of flax seed oil amide, 20-40% of phosphonic glycollic acid, 5-10% of heptahydrate, 10-20% of polyaspartic acid and 10-30% of isopropyl alcohol, wherein the sum of the components by percent is 100%. The compound corrosion inhibitor has the beneficial effects of low cost, environmental friendliness and good corrosion inhibition effect.
Description
Technical field
The invention belongs to metallic material corrosion and protection field, be specifically related to a kind of composite corrosion inhibitor that is applicable to sewage medium and preparation method thereof.
Background technology
Oilfield water extraction is subject to that injected water salinity, chloride ion content are high, pH value, CO
2with the impact of the factor such as local water, water filling corrosion becomes the common problem of paying close attention to of vast oil worker, also becomes and improves line equipment operation life and the important process reducing production costs.Along with the reinforcement of national environmental protection policy, the green corrosion inhibitor of researching and developing novel, efficient, low toxicity, environmental protection is more and more subject to people's attention.
Conventional inhibiter has quaternary ammonium salt, nitrogen-containing hetero lopps, imidazolines, Mannich bases etc.Traditional inhibiter not only biological degradability is bad, also can bring pollution to environment.Inhibiter based on linseed oil has been shown in bibliographical information < < protecting metallic surface coating assessment and inhibiter technical study > >, yet in the document, synthetic linseed oil Imidazoline Quatemary-ammonium-salt Corrosion Inhibitor is mainly in acidic medium, and the corrosion mitigating effect in sewage medium is not done any evaluation.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of cost low, environmental protection, composite corrosion inhibitor that is applicable to sewage medium that corrosion mitigating effect is good and preparation method thereof.
This composite corrosion inhibitor that is applicable to sewage medium, this composite corrosion inhibitor is comprised of linseed oil acid amides, phosphono oxyacetic acid, Zinc Sulphate Heptahydrate, poly-aspartic-acid and Virahol, its massfraction is respectively: linseed oil acid amides 30%-50%, phosphono oxyacetic acid 20%-40%, Zinc Sulphate Heptahydrate 5%-10%, poly-aspartic-acid 10%-20%, Virahol 10%-30%, and each component percentage composition sum is 100%; The molecular structural formula of described linseed oil acid amides is:
Wherein R comprises R1, R2, R3 and R4;
This application that is applicable to the composite corrosion inhibitor of sewage medium, is characterized in that: according to the ratio that contains 0.01 – 0.1g composite corrosion inhibitor in every 100g corrosive medium, composite corrosion inhibitor is added in corrosive medium.
As preferably: described corrosive medium is sewage medium.
This preparation method who is applicable to the composite corrosion inhibitor of sewage medium: comprise following step:
Step 1: linseed oil acid amides synthetic;
In 250ml four-hole bottle, routine 1:1 – 1:3 linseed oil and triethylene tetramine are dissolved in xylene solvent in molar ratio, it is 20 – 40ml that every mole of linseed oil adds dimethylbenzene volume, under nitrogen protection, be slowly heated to 100-150 ℃, add concentrated sulfuric acid catalyst simultaneously, at 100-150 ℃, react 3 – 4 hours, the add-on of described catalyzer is in every mole of linseed oil, to add 0.1 – 0.5ml, after reaction finishes, distills out dimethylbenzene; Cool to room temperature; Obtain faint yellow viscous liquid, water-soluble, purity is more than 90%;
Reaction equation is:
R comprises R1, R2, R3 and R4;
Step 2: the preparation of composite corrosion inhibitor;
Linseed oil acid amides, phosphono oxyacetic acid, Zinc Sulphate Heptahydrate, poly-aspartic-acid and Virahol are respectively to 30%-50%, 20%-40%, 5%-10%, 10%-20% and 10%-30% by its massfraction to be mixed; each component percentage composition sum is 100%, obtains composite corrosion inhibitor.
The invention has the beneficial effects as follows:
1. the invention provides a kind of composite corrosion inhibitor that is applicable to corrosion in water medium and preparation method thereof, wherein the production technique of linseed oil amide corrosion inhibitor is simpler, raw material sources extensively and linseed oil be green plants oil, there is environment friendly and final composite corrosion inhibitor is water-soluble better;
2. the invention provides a kind of composite corrosion inhibitor that is applicable to corrosion in water medium and preparation method thereof, by the method for inhibiter compound synergic, give full play to the synergy of each component, so at sewage medium (with reference to the company standard Q/SY TZ0178-2007 of PetroChina Company Ltd.: distilled water+5%NaCl+0.4%CaCl
2+ 0.2%MgCl
2.6H
20+0.6%Na
2sO
4+ 0.04%NaHC0
3) in there is excellent corrosion mitigating effect, use temperature scope is in the time of 5-60 ℃, inhibition efficiency all reaches more than 90%.
3. the invention provides a kind of composite corrosion inhibitor that is applicable to corrosion in water medium and preparation method thereof, wherein preparation method is simple, and cost is lower, and corrosion mitigating effect is excellent.
4. the invention provides a kind of composite corrosion inhibitor that is applicable to corrosion in water medium and preparation method thereof; linseed oil acid amides is combined with the empty d track of metal base Fe atom by the N atom in molecular structure; rapid chemical is adsorbed in substrate surface, forms stable protective membrane.
5. the invention provides a kind of composite corrosion inhibitor that is applicable to corrosion in water medium and preparation method thereof, Zn
2+can form in cathodic area Zn (OH)
2precipitation membrane, plays the effect at the bottom of protecting group, reduces and adds zinc salt concentration, is conducive to cost-saving.
6. the invention provides a kind of composite corrosion inhibitor that is applicable to corrosion in water medium and preparation method thereof; add phosphono oxyacetic acid can improve zinc salt solubleness on the one hand; on the other hand in molecular structure-OH, P=O group can form fast stable protective membrane with substrate, obtain higher inhibition efficiency.
7. the present invention is for a kind of composite corrosion inhibitor that is applicable to corrosion in water medium and preparation method thereof, and wherein phosphono oxyacetic acid is purchased from Shandong Xin Tai water technology company limited.
Accompanying drawing explanation
Fig. 1: carbon steel soaks the outward appearance photo of 4 days in not adding the sewage medium of composite corrosion inhibitor;
Fig. 2: carbon steel soaks the outward appearance photo of 4 days in adding the sewage medium of composite corrosion inhibitor.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further.Although the present invention is described in connection with preferred embodiment, should know, do not represent to limit the invention in described embodiment.On the contrary, the present invention is by alternative, modified version and the equivalent contained in the scope of the present invention that can be included in attached claims restriction.
Embodiment 1:
The present invention proposes a kind of preparation method who is applicable to the composite corrosion inhibitor of corrosion in water medium, specifically comprises following step:
Step 1: linseed oil acid amides synthetic.
In 250ml four-hole bottle, routine 1:1 – 1:3 linseed oil and triethylene tetramine are dissolved in xylene solvent in molar ratio; it is 20 – 40ml that every mole of linseed oil adds dimethylbenzene volume; under nitrogen protection, be slowly heated to 100-150 ℃; add concentrated sulfuric acid catalyst simultaneously; at 100-150 ℃, react 3 – 4 hours; the add-on of described catalyzer is in every mole of linseed oil, to add 0.1 – 0.5ml, after reaction finishes, distills out dimethylbenzene.Cool to room temperature.
Obtain faint yellow viscous liquid, water-soluble, purity is more than 90%.
Wherein, linseed oil raw material is purchased from Zhangjiakou City Xin Te vegetables oil company limited, and its major ingredient sees the following form:
| Lipid acid kind | Content |
| Saturated fatty acid | 9％-11％ |
| Oleic acid | 13％-29％ |
| Linolic acid | 15％-30％ |
| Linolenic acid | 40％-60％ |
Reaction equation is:
Wherein R comprises R1, R2, R3 and R4;
Step 2: the preparation of composite corrosion inhibitor.
Linseed oil acid amides, phosphono oxyacetic acid, Zinc Sulphate Heptahydrate, poly-aspartic-acid and Virahol are respectively to 30%, 20%, 10%, 10% and 30% by its massfraction to be mixed; each component percentage composition sum is 100%, obtains composite corrosion inhibitor.
By the composite corrosion inhibitor obtaining according to adding the proportion of composite corrosion inhibitor 0.01g to join in sewage solution in every 100g sewage medium, described sewage medium is with reference to the company standard Q/SY TZ0178-2007 of PetroChina Company Ltd., and its composition is: distilled water+5%NaCl+0.4%CaCl
2+ 0.2%MgCl
2.6H
20+0.6%Na
2sO
4+ 0.04%NaHC0
3.And all place carbon steel test piece in adding and do not add the sewage solution of composite corrosion inhibitor, test method according to the company standard Q/SY TZ0178-2007 of PetroChina Company Ltd. is carried out weightless test, at 50 ℃, soak the carbon steel photo of 4 days and weightless result respectively as Fig. 1 and 2, shown in table 1, add after inhibiter, the weightlessness of carbon steel in sewage medium obviously reduces, and illustrates that inhibiter has excellent corrosion mitigating effect.
Table 1
Embodiment 2:
The key distinction of the present embodiment and embodiment 1 is step 2, is specially:
Linseed oil acid amides, phosphono oxyacetic acid, Zinc Sulphate Heptahydrate, poly-aspartic-acid and Virahol are respectively to 30%, 40%, 10%, 10% and 10% by its massfraction and mix, obtain composite corrosion inhibitor.
By the composite corrosion inhibitor obtaining according to adding the proportion of composite corrosion inhibitor 0.02g to join in sewage solution in every 100g sewage medium, and all place carbon steel test piece in adding and do not add the sewage solution of composite corrosion inhibitor, test method according to the company standard Q/SY TZ0178-2007 of PetroChina Company Ltd. is carried out weightless test, at 50 ℃, soak 4 days, weightless result is as shown in table 2.Add after inhibiter, the weight loss of carbon steel obviously reduces, and steel surface is very bright, illustrates that inhibiter has excellent corrosion mitigating effect.
Table 2
Embodiment 3:
The key distinction of the present embodiment and embodiment 1 is step 2, is specially:
Linseed oil acid amides, phosphono oxyacetic acid, Zinc Sulphate Heptahydrate, poly-aspartic-acid and Virahol are respectively to 50%, 20%, 5%, 15% and 10% by its massfraction and mix, obtain composite corrosion inhibitor.
By the composite corrosion inhibitor obtaining according to adding the proportion of composite corrosion inhibitor 0.1g to join in sewage solution in every 100g sewage medium, and all place carbon steel test piece in adding and do not add the sewage solution of composite corrosion inhibitor, test method according to the company standard Q/SY TZ0178-2007 of PetroChina Company Ltd. is carried out weightless test, at 50 ℃, soak 4 days, weightless result is as shown in table 3.Add after inhibiter, the weight loss of carbon steel obviously reduces, and steel surface is very bright, illustrates that inhibiter has excellent corrosion mitigating effect.
Table 3
Embodiment 4:
The key distinction of the present embodiment and embodiment 1 is step 2, is specially:
Linseed oil acid amides, phosphono oxyacetic acid, Zinc Sulphate Heptahydrate, poly-aspartic-acid and Virahol are respectively to 30%, 20%, 10%, 20% and 20% by its massfraction and mix, obtain composite corrosion inhibitor.
By the composite corrosion inhibitor obtaining according to adding the proportion of composite corrosion inhibitor 0.06g to join in sewage solution in every 100g sewage medium, and all place carbon steel test piece in adding and do not add the sewage solution of composite corrosion inhibitor, test method according to the company standard Q/SY TZ0178-2007 of PetroChina Company Ltd. is carried out weightless test, at 50 ℃, soak 4 days, weightless result is as shown in table 4.Add after inhibiter, the weight loss of carbon steel obviously reduces, and steel surface is very bright, illustrates that inhibiter has excellent corrosion mitigating effect.
Table 4
Claims (4)
1. a composite corrosion inhibitor that is applicable to sewage medium, it is characterized in that: this composite corrosion inhibitor is comprised of linseed oil acid amides, phosphono oxyacetic acid, Zinc Sulphate Heptahydrate, poly-aspartic-acid and Virahol, its massfraction is respectively: linseed oil acid amides 30%-50%, phosphono oxyacetic acid 20%-40%, Zinc Sulphate Heptahydrate 5%-10%, poly-aspartic-acid 10%-20%, Virahol 10%-30%, and each component percentage composition sum is 100%; The molecular structural formula of described linseed oil acid amides is:
Wherein R comprises R1, R2, R3 and R4;
2. an application that is applicable to the composite corrosion inhibitor of sewage medium claimed in claim 1, is characterized in that: according to the ratio that contains 0.01 – 0.1g composite corrosion inhibitor in every 100g corrosive medium, composite corrosion inhibitor is added in corrosive medium.
3. the application of composite corrosion inhibitor that is applicable to sewage medium according to claim 2 and preparation method thereof, is characterized in that: described corrosive medium is sewage medium.
4. a preparation method who is applicable to the composite corrosion inhibitor of sewage medium claimed in claim 1, is characterized in that: comprise following step:
Step 1: linseed oil acid amides synthetic;
In 250ml four-hole bottle, routine 1:1 – 1:3 linseed oil and triethylene tetramine are dissolved in xylene solvent in molar ratio, it is 20 – 40ml that every mole of linseed oil adds dimethylbenzene volume, under nitrogen protection, be slowly heated to 100-150 ℃, add concentrated sulfuric acid catalyst simultaneously, at 100-150 ℃, react 3 – 4 hours, the add-on of described catalyzer is in every mole of linseed oil, to add 0.1 – 0.5ml, after reaction finishes, distills out dimethylbenzene; Cool to room temperature; Obtain faint yellow viscous liquid, water-soluble, purity is more than 90%;
Reaction equation is:
R comprises R1, R2, R3 and R4;
Step 2: the preparation of composite corrosion inhibitor;
Linseed oil acid amides, phosphono oxyacetic acid, Zinc Sulphate Heptahydrate, poly-aspartic-acid and Virahol are respectively to 30%-50%, 20%-40%, 5%-10%, 10%-20% and 10%-30% by its massfraction to be mixed; each component percentage composition sum is 100%, obtains composite corrosion inhibitor.
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|---|---|---|---|
| CN201410238332.3A CN103993323B (en) | 2014-05-30 | 2014-05-30 | A kind of composite corrosion inhibitor being applicable to wastewater media and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410238332.3A CN103993323B (en) | 2014-05-30 | 2014-05-30 | A kind of composite corrosion inhibitor being applicable to wastewater media and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103993323A true CN103993323A (en) | 2014-08-20 |
| CN103993323B CN103993323B (en) | 2016-01-20 |
Family
ID=51307645
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107653453A (en) * | 2017-09-06 | 2018-02-02 | 贵州民族大学 | A kind of compound corrosion inhibitor for being applied to Q235 steel and copper alloy galvanic couple and preparation method thereof |
| CN107675183A (en) * | 2017-09-06 | 2018-02-09 | 贵州民族大学 | A kind of compound corrosion inhibitor for being applied to N80 steel and stainless steel galvanic couple and preparation method thereof |
| CN111926332A (en) * | 2020-07-16 | 2020-11-13 | 深圳市点石源水处理技术有限公司 | Tin surface protective agent and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107653453A (en) * | 2017-09-06 | 2018-02-02 | 贵州民族大学 | A kind of compound corrosion inhibitor for being applied to Q235 steel and copper alloy galvanic couple and preparation method thereof |
| CN107675183A (en) * | 2017-09-06 | 2018-02-09 | 贵州民族大学 | A kind of compound corrosion inhibitor for being applied to N80 steel and stainless steel galvanic couple and preparation method thereof |
| CN107653453B (en) * | 2017-09-06 | 2019-11-08 | 贵州民族大学 | A kind of compound corrosion inhibitor and preparation method thereof suitable for Q235 steel and copper alloy galvanic couple |
| CN107675183B (en) * | 2017-09-06 | 2019-11-08 | 贵州民族大学 | A kind of compound corrosion inhibitor and preparation method thereof suitable for N80 steel and stainless steel galvanic couple |
| CN111926332A (en) * | 2020-07-16 | 2020-11-13 | 深圳市点石源水处理技术有限公司 | Tin surface protective agent and preparation method and application thereof |
| CN111926332B (en) * | 2020-07-16 | 2022-05-27 | 深圳市点石源水处理技术有限公司 | Tin surface protective agent and preparation method and application thereof |
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