CN116770312A - Corrosion inhibitor and application thereof - Google Patents
Corrosion inhibitor and application thereof Download PDFInfo
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- CN116770312A CN116770312A CN202210223246.XA CN202210223246A CN116770312A CN 116770312 A CN116770312 A CN 116770312A CN 202210223246 A CN202210223246 A CN 202210223246A CN 116770312 A CN116770312 A CN 116770312A
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- Prior art keywords
- corrosion inhibitor
- quaternary ammonium
- ammonium salt
- imidazoline
- parts
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- 238000005260 corrosion Methods 0.000 title claims abstract description 54
- 230000007797 corrosion Effects 0.000 title claims abstract description 54
- 239000003112 inhibitor Substances 0.000 title claims abstract description 41
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims abstract description 14
- 150000001412 amines Chemical class 0.000 claims abstract description 12
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 11
- 229920000570 polyether Polymers 0.000 claims abstract description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 9
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000012964 benzotriazole Substances 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- -1 alkyl imidazoline quaternary ammonium salt Chemical class 0.000 claims description 37
- SMWDFEZZVXVKRB-UHFFFAOYSA-N anhydrous quinoline Natural products N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims description 20
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 claims description 10
- LFKOKRZUHFKTOL-UHFFFAOYSA-N 1-(2-octyl-4,5-dihydroimidazol-1-yl)ethanamine Chemical compound CCCCCCCCC1=NCCN1C(C)N LFKOKRZUHFKTOL-UHFFFAOYSA-N 0.000 claims description 9
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 claims description 9
- 229940073608 benzyl chloride Drugs 0.000 claims description 9
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 7
- 229930195729 fatty acid Natural products 0.000 claims description 7
- 239000000194 fatty acid Substances 0.000 claims description 7
- 150000004665 fatty acids Chemical class 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 5
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 claims description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 4
- ZZEKLJMQENPGEU-UHFFFAOYSA-N 1-n-octadecylpropane-1,2-diamine Chemical group CCCCCCCCCCCCCCCCCCNCC(C)N ZZEKLJMQENPGEU-UHFFFAOYSA-N 0.000 claims description 3
- 150000003973 alkyl amines Chemical class 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 125000002636 imidazolinyl group Chemical group 0.000 claims description 3
- 229920001522 polyglycol ester Polymers 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 239000012456 homogeneous solution Substances 0.000 description 6
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- 229920001223 polyethylene glycol Polymers 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- JLFNLZLINWHATN-UHFFFAOYSA-N pentaethylene glycol Chemical compound OCCOCCOCCOCCOCCO JLFNLZLINWHATN-UHFFFAOYSA-N 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 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
- C23F11/10—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 using organic inhibitors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a corrosion inhibitor and application thereof. The raw materials for preparing the corrosion inhibitor comprise organic amine, imidazoline polyether, quaternary ammonium salt, thiourea, benzotriazole, a dispersing agent and a solvent. The components in the corrosion inhibitor provided by the invention have synergistic effect, and the film forming property and the compatibility among the components of the corrosion inhibitor are provided, so that the corrosion inhibitor is ensured not to be desorbed under the high temperature condition, and CO can be prevented 2 、H 2 And S and other acid gases corrode underground pipe columns, ground pipelines, equipment and the like, so that normal production operation is ensured.
Description
Technical Field
The invention relates to the technical field of corrosion inhibitors, in particular to a corrosion inhibitor and application thereof.
Background
Corrosion inhibitors refer to chemicals or compounds that, when present in the environment in appropriate concentrations and forms, can prevent or slow down corrosion of materials, and thus corrosion inhibitors may also be referred to as corrosion inhibitors. Microorganisms and CO in oil fields and during natural gas exploitation or transportation 2 、H 2 The acid gases such as S and the like seriously corrode underground pipe columns, ground pipelines, equipment and the like, and seriously influence normal production operation. A large amount of liquid water can be accumulated in the shaft, the liquid water or water vapor remains at different positions of the shaft, and when the thickness of the water film reaches the critical relative humidity of steel, the corrosive medium CO 2 、H 2 Acid gases such as S and the like are dissolved in a water film, so that effective electron transfer can be formed, and corrosion of steel is caused.
In order to prevent corrosion caused by acid gas, common corrosion prevention measures mainly adopt corrosion-resistant pipes, surface protection coating layers or coating layers, corrosion inhibitor filling, technological corrosion prevention and the like, wherein the most economical and quick-acting corrosion inhibitor is adopted. Although some corrosion inhibitors have a certain corrosion inhibition effect on the corrosion of acid gas, desorption can occur when the temperature is slightly higher than 70 ℃, so that the efficiency of the corrosion inhibitor is greatly reduced or even fails.
Disclosure of Invention
The invention provides a corrosion inhibitor, which is prepared from the raw materials of organic amine, imidazoline polyether, quaternary ammonium salt, thiourea, benzotriazole, a dispersing agent and a solvent.
In one embodiment, the organic amine is an alkyl amine.
In one embodiment, the alkylamine is N-octadecyl propylenediamine. For example, N-octadecyl propylenediamine has a CAS number of 7173-62-8.
In one embodiment, the imidazoline polyether is imidazoline polyoxyethylene ether RX-406.
In one embodiment, the quaternary ammonium salt is a mixture of an alkyl imidazoline quaternary ammonium salt and a quinoline quaternary ammonium salt.
In a specific embodiment, the quaternary ammonium salt is a mixture of alkyl imidazoline quaternary ammonium salt and quinoline quaternary ammonium salt in a mass ratio of 1:2.
In one embodiment, the dispersant is a mixture of a tetradecylphosphate diester and a fatty acid polyethylene glycol ester.
In a specific embodiment, the dispersant is a mixture of components with a mass ratio of 2:1 and a fatty acid polyglycol ester.
In one embodiment, the tetradecylphosphoric acid diester has a CAS number of 6640-03-5 and the fatty acid polyethylene glycol ester has the brand PEG400DS.
In one embodiment, the solvent is methanol.
In one embodiment, the organic amine is 1 to 2 parts by mass, the imidazoline polyether is 15 to 25 parts by mass, the quaternary ammonium salt is 20 to 30 parts by mass, the thiourea is 5 to 10 parts by mass, the benzotriazole is 1 to 5 parts by mass, the dispersant is 5 to 10 parts by mass, and the solvent is 60 to 70 parts by mass.
In one specific embodiment, the alkyl imidazoline quaternary ammonium salt is prepared by the steps of:
1) Uniformly mixing octanoic acid and diethylenetriamine, and reacting at high temperature to obtain 1-aminoethyl-2-octyl imidazoline;
2) Uniformly mixing 1-aminoethyl-2-octyl imidazoline with benzyl chloride, and reacting at high temperature to obtain the alkyl imidazoline quaternary ammonium salt.
In one specific embodiment, the alkyl imidazoline quaternary ammonium salt is prepared by the steps of:
1) Uniformly mixing octanoic acid and diethylenetriamine in a molar ratio of 1:1.4, and reacting at 170 ℃ for 3 hours to obtain 1-aminoethyl-2-octyl imidazoline;
2) Uniformly mixing 1-aminoethyl-2-octyl imidazoline and benzyl chloride in a molar ratio of 1:1.2, and reacting at 170 ℃ for 3.5h to obtain the alkyl imidazoline quaternary ammonium salt.
In one specific embodiment, the quinoline quaternary ammonium salt is prepared by the following steps:
and stirring quinoline and benzyl chloride, then reacting at a high temperature, and cooling to the ambient temperature after the reaction is finished to obtain the quinoline quaternary ammonium salt.
In one specific embodiment, the quinoline quaternary ammonium salt is prepared by the following steps:
the molar ratio was set to 1:1 and benzyl chloride are stirred for 10min, then react for 8h at 165 ℃, and the quinoline quaternary ammonium salt is obtained after the reaction is finished and cooled to the ambient temperature.
The second aspect of the invention provides the use of a corrosion inhibitor according to any one of the first aspect of the invention for preventing or reducing corrosion of acid gases at elevated temperatures.
In a specific embodiment, the elevated temperature is a temperature above 70 ℃.
In one embodiment, the elevated temperature is a temperature of 70 ℃ or more and 100 ℃ or less.
The invention has the beneficial effects that:
the components in the corrosion inhibitor provided by the invention have synergistic effect, and the film forming property and the compatibility among the components of the corrosion inhibitor are provided, so that the corrosion inhibitor is ensured not to be desorbed under the high temperature condition, and CO can be prevented 2 、H 2 And S and other acid gases corrode underground pipe columns, ground pipelines, equipment and the like, so that normal production operation is ensured.
Detailed Description
The invention is further illustrated below with reference to the examples, which are merely illustrative of the invention and do not constitute a limitation of the invention in any way.
The preparation of the alkyl imidazoline quaternary ammonium salt comprises the following steps:
(1) Adding octanoic acid and diethylenetriamine in a molar ratio of 1:1.4 into a reaction kettle, stirring a mixture of the octanoic acid and the diethylenetriamine until the mixture is uniform, and reacting for 3 hours at 170 ℃ to obtain 1-aminoethyl-2-octyl imidazoline;
(2) Adding 1-aminoethyl-2-octyl imidazoline into another reaction kettle, adding benzyl chloride, stirring uniformly, and reacting at 170 ℃ for 3.5 hours to obtain alkyl imidazoline quaternary ammonium salt, wherein the molar ratio of 1-aminoethyl-2-octyl imidazoline to benzyl chloride is 1:1.2.
The preparation of the quinoline quaternary ammonium salt comprises the following steps:
the molar ratio of the addition to the round-bottomed flask is 1:1 and benzyl chloride, stirring for 10min, then reacting for 8h at 165 ℃, and cooling to the ambient temperature after the reaction is finished to obtain the quinoline quaternary ammonium salt.
Example 1
The liquid corrosion inhibitor is prepared from the following raw materials in parts by mass: 1 part of organic amine, 15 parts of imidazoline polyether, 20 parts of quaternary ammonium salt, 5 parts of thiourea, 1 part of benzotriazole, 5 parts of dispersing agent and 60 parts of solvent.
The organic amine is N-octadecyl propylene diamine, available from Hangzhou Vandan chemical Co., ltd, with CAS number 7173-62-8.
The imidazoline polyether is imidazoline polyoxyethylene ether, and is purchased from Shanxi Nissan oil chemical industry Co., ltd, and has the brand name: RX-406.
The quaternary ammonium salt is a mixture of alkyl imidazoline quaternary ammonium salt and quinoline quaternary ammonium salt with the mass ratio of 1:2.
The mass ratio of the dispersing agent is 2:1 (CAS number 6640-03-5) and a fatty acid polyethylene glycol ester (commercially available from Jiangsu province, sea-An petrochemical Co., ltd., trade designation PEG400 DS).
The solvent is methanol.
The preparation method of the liquid corrosion inhibitor comprises the following steps: sequentially adding tetradecyl phosphate diester, fatty acid polyethylene glycol ester, alkyl imidazoline quaternary ammonium salt, quinoline quaternary ammonium salt, thiourea, benzotriazole, N-octadecyl propylene diamine and imidazoline polyoxyethylene ether into a methanol solvent, and stirring to obtain the aqueous emulsion.
Example 2
The difference from example 1 is that: 1.5 parts of organic amine, 20 parts of imidazoline polyether, 25 parts of quaternary ammonium salt, 8 parts of thiourea, 3 parts of benzotriazole, 7 parts of dispersing agent and 65 parts of solvent.
Example 3
The difference from example 1 is that: 2 parts of organic amine, 25 parts of imidazoline polyether, 30 parts of quaternary ammonium salt, 10 parts of thiourea, 5 parts of benzotriazole, 10 parts of dispersing agent and 70 parts of solvent.
Comparative example 1
The difference from example 1 is that: the mass ratio of the alkyl imidazoline quaternary ammonium salt to the quinoline quaternary ammonium salt in the quaternary ammonium salt is 1:6.
comparative example 2
The difference from example 1 is that: the mass ratio of the alkyl imidazoline quaternary ammonium salt to the quinoline quaternary ammonium salt in the quaternary ammonium salt is 4:1.
comparative example 3
The difference from example 1 is that: the dispersant is only a fatty acid polyethylene glycol and does not include tetradecyl phosphate diester.
Performance testing
1. The measurement of the corrosion inhibition efficiency of the corrosion inhibitors prepared in examples 1 to 3 and comparative examples 1 to 3 was carried out with reference to the standard SY/T5405-1996 Experimental method for the Performance of corrosion inhibitors for acidification and evaluation index: the corrosion medium is 20% hydrochloric acid solution, the mass fraction of the corrosion inhibitor is 4%, the steel sheet type is N80, the reaction temperature is 100 ℃, the reaction time is 4 hours, the corrosion inhibitor is not added in blank control, and the test result is shown in Table 1.
2. The corrosion inhibitors prepared in examples 1 to 3 and comparative examples 1 to 3 were allowed to stand for 8 hours, and whether the corrosion inhibitors were uniform solutions was visually checked to determine the stability of the corrosion inhibitors, and the test results are shown in Table 1.
TABLE 1
| Corrosion inhibitor | Corrosion Rate/(g.cndot.m 2 ·h) -1 ) | Corrosion inhibition efficiency (%) | Stability of |
| Blank control | 52.13 | / | / |
| Example 1 | 1.25 | 99.50 | Homogeneous solution |
| Example 2 | 1.00 | 99.65 | Homogeneous solution |
| Example 3 | 1.43 | 99.43 | Homogeneous solution |
| Comparative example 1 | 7.63 | 97.53 | Homogeneous solution |
| Comparative example 2 | 9.54 | 95.88 | Homogeneous solution |
| Comparative example 3 | 22.75 | 92.40 | Homogeneous solution |
The data show that certain alkyl imidazoline quaternary ammonium salt and quinoline quaternary ammonium salt, combined with proper dispersant, have better synergy, thus showing higher corrosion inhibition efficiency.
Although the invention has been described with reference to specific embodiments, those skilled in the art will appreciate that various modifications might be made without departing from the true spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation, material, composition of materials, and method to the essential scope, spirit, and scope of the present invention. All such modifications are intended to be included within the scope of this invention as defined in the following claims.
Claims (10)
1. The corrosion inhibitor is prepared from organic amine, imidazoline polyether, quaternary ammonium salt, thiourea, benzotriazole, dispersing agent and solvent.
2. The corrosion inhibitor according to claim 1, wherein the organic amine is an alkylamine, preferably the organic amine is N-octadecyl-propylenediamine.
3. The corrosion inhibitor according to claim 1, wherein the imidazoline polyether is imidazoline polyoxyethylene ether RX-406.
4. The corrosion inhibitor according to claim 1, wherein the quaternary ammonium salt is a mixture of alkyl imidazoline quaternary ammonium salt and quinoline quaternary ammonium salt.
5. The corrosion inhibitor according to claim 1, wherein the dispersant is a mixture of a tetradecylphosphate diester and a fatty acid polyglycol ester.
6. The corrosion inhibitor according to claim 1, wherein the solvent is methanol.
7. The corrosion inhibitor according to claim 1, wherein the organic amine is 1 to 2 parts by mass, the imidazoline polyether is 15 to 25 parts by mass, the quaternary ammonium salt is 20 to 30 parts by mass, the thiourea is 5 to 10 parts by mass, the benzotriazole is 1 to 5 parts by mass, the dispersant is 5 to 10 parts by mass, and the solvent is 60 to 70 parts by mass.
8. The corrosion inhibitor according to claim 4, wherein the alkyl imidazoline quaternary ammonium salt is prepared by the steps of:
1) Uniformly mixing octanoic acid and diethylenetriamine, and reacting at high temperature to obtain 1-aminoethyl-2-octyl imidazoline;
2) Uniformly mixing 1-aminoethyl-2-octyl imidazoline with benzyl chloride, and reacting at high temperature to obtain the alkyl imidazoline quaternary ammonium salt.
9. The corrosion inhibitor according to claim 4, wherein the quinoline quaternary ammonium salt is prepared by the steps of: and stirring quinoline and benzyl chloride, then reacting at a high temperature, and cooling to the ambient temperature after the reaction is finished to obtain the quinoline quaternary ammonium salt.
10. Use of a corrosion inhibitor according to any one of claims 1 to 9 for preventing or reducing acid gas corrosion at high temperatures;
preferably, the elevated temperature is a temperature above 70 ℃;
preferably, the high temperature is a temperature of 70 ℃ or higher and 100 ℃ or lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210223246.XA CN116770312A (en) | 2022-03-07 | 2022-03-07 | Corrosion inhibitor and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210223246.XA CN116770312A (en) | 2022-03-07 | 2022-03-07 | Corrosion inhibitor and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116770312A true CN116770312A (en) | 2023-09-19 |
Family
ID=87993637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210223246.XA Pending CN116770312A (en) | 2022-03-07 | 2022-03-07 | Corrosion inhibitor and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116770312A (en) |
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2022
- 2022-03-07 CN CN202210223246.XA patent/CN116770312A/en active Pending
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