CN115449363A - Preparation method of quaternary ammonium salt type high-temperature acidizing corrosion inhibitor - Google Patents
Preparation method of quaternary ammonium salt type high-temperature acidizing corrosion inhibitor Download PDFInfo
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- CN115449363A CN115449363A CN202211121205.6A CN202211121205A CN115449363A CN 115449363 A CN115449363 A CN 115449363A CN 202211121205 A CN202211121205 A CN 202211121205A CN 115449363 A CN115449363 A CN 115449363A
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- quaternary ammonium
- ammonium salt
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- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
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- 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
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- 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
- C23F11/04—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
Abstract
The invention discloses a preparation method of a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor; the corrosion inhibitor comprises a corrosion inhibitor, a solvent and isopropanol, wherein the corrosion inhibitor comprises a quaternary ammonium salt, a corrosion inhibitor molecule and a solvent, wherein quinoline and chloromethyl naphthalene are mixed, and then the mixture reacts with an isopropanol organic solution to obtain chloromethyl naphthalene quinoline quaternary ammonium salt; the product has good compatibility, dispersibility and surface activity in acid liquor; the reaction condition and the operation are simple, the generated product can be directly used as an acidification corrosion inhibitor, even under the condition of high temperature resistance of 160 ℃, the dissolution and dispersion performance is excellent, the performance is stable, the compatibility with acid liquor is good, and the corrosion inhibition performance reaches the standard.
Description
Technical Field
The invention relates to the technical field of corrosion inhibitor production, in particular to a preparation method of a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor.
Background
At present, many of the acidification corrosion inhibitors have the problems of poor dissolution dispersibility, poor stability, poor compatibility with acid liquor and poor corrosion inhibition performance under high temperature conditions, and the synthesis reaction conditions are complex, for example, the Mannich base reaction needs to adjust the pH value, the operation steps are complex, and meanwhile, the synthesis products generated by part of the acidification corrosion inhibitors are difficult to purify. In order to solve the problems, a preparation method of a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor is provided.
Disclosure of Invention
The invention aims to provide a preparation method of a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor, which aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor is prepared from the following raw materials in parts by weight: 25-26 parts of chloromethyl naphthalene quinoline quaternary ammonium salt; 2-3 parts of urotropin; 49-51 parts of formic acid; 0.5-1.5 parts of potassium iodide; 0.5-1.5 parts of N, N-dimethylformamide; 4-5 parts of nonanol polyoxyethylene ether; 14.5-15.5 parts of water.
A preparation method of a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor comprises the following steps:
step 1: firstly, mixing quinoline and chloromethyl naphthalene, and then reacting the mixture with an isopropanol organic solution to obtain chloromethyl naphthalene quinoline quaternary ammonium salt;
step 2: adding urotropine, formic acid, potassium iodide, N-dimethylformamide, nonanol polyoxyethylene ether and water into chloromethyl naphthalene quinoline quaternary ammonium salt according to a certain proportion, continuing to react for 12 hours, and obtaining an intermediate product by reduced pressure distillation after the reaction is finished; and heating to 80-100 ℃ for reaction for 10 hours, cooling to room temperature, filtering, extracting, and distilling under reduced pressure to obtain the quaternary ammonium salt high-temperature acidification corrosion inhibitor.
Preferably, in step 1, chloromethyl naphthalene has more benzene ring structures than the commonly used benzyl chloride quaternary ammonium reagent, and when the quaternary ammonium salt molecular structure contains more pi electrons, corrosion inhibitor molecules are more easily adsorbed on the metal surface, so that the corrosion inhibitor has better corrosion inhibition performance.
Preferably, in the step 2, the oil has good compatibility, dispersibility and surface activity in acid liquor; the reaction condition and operation are simple, and the generated product can be directly used as an acidification corrosion inhibitor.
Preferably, in step 1, quinoline is first mixed with chloromethylnaphthalene according to 1.
Preferably, in the step 1, the proportion of the isopropanol is 45%, the reaction time is 5 hours, and the reaction temperature is 85 ℃, so that the chloromethyl naphthalene quinoline quaternary ammonium salt can be obtained.
Compared with the prior art, the invention has the beneficial effects that: compared with the commonly used benzyl chloride quaternary ammonium reagent, chloromethyl naphthalene in the corrosion inhibitor has more benzene ring structures, and when the quaternary ammonium salt molecular structure contains more pi electrons, corrosion inhibitor molecules are easier to adsorb on the metal surface, so that the corrosion inhibitor has better corrosion inhibition performance; the product has good compatibility, dispersibility and surface activity in acid liquor; the reaction condition and the operation are simple, the generated product can be directly used as the acidizing corrosion inhibitor, even under the condition of resisting the high temperature of more than 160 ℃, the dissolution and dispersion performance is excellent, the performance is stable, the compatibility with acid liquor is good, the corrosion inhibition performance reaches the standard, the synthesis condition and the operation are simple, and the synthesized product can be directly used as the acidizing corrosion inhibitor.
Drawings
FIG. 1 is a reaction scheme of the present invention;
FIG. 2 is a schematic diagram showing the comparison results before and after corrosion of the corrosion inhibitor of the present invention.
Detailed Description
The present invention will now be described in more detail by way of examples, which are given by way of illustration only and are not intended to limit the scope of the present invention in any way.
The invention provides a technical scheme that: a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor is prepared from the following raw materials in parts by weight: 25-26 parts of chloromethyl naphthalene quinoline quaternary ammonium salt; 2-3 parts of urotropin; 49-51 parts of formic acid; 0.5-1.5 parts of potassium iodide; 0.5-1.5 parts of N, N-dimethylformamide; 4-5 parts of nonanol polyoxyethylene ether; 14.5-15.5 parts of water.
A preparation method of a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor comprises the following steps;
step 1: firstly, mixing quinoline and chloromethyl naphthalene, and then reacting the mixture with an isopropanol organic solution to obtain chloromethyl naphthalene quinoline quaternary ammonium salt;
and 2, step: adding urotropine, formic acid, potassium iodide, N-dimethylformamide, nonanol polyoxyethylene ether and water in a certain proportion into chloromethyl naphthalene quinoline quaternary ammonium salt, continuing to react for 12 hours, and carrying out reduced pressure distillation after the reaction is finished to obtain an intermediate product; and heating to 80-100 ℃ for reaction for 10 hours, cooling to room temperature, filtering, extracting, and distilling under reduced pressure to obtain the quaternary ammonium salt high-temperature acidification corrosion inhibitor.
The first embodiment is as follows:
25 parts of chloromethyl naphthalene quinoline quaternary ammonium salt; 2 parts of urotropin; 51 parts of formic acid; 1 part of potassium iodide; 1.5 parts of N, N-dimethylformamide; 5 parts of nonanol polyoxyethylene ether; 14.5 parts of water.
Firstly, mixing quinoline and chloromethyl naphthalene, and then reacting the mixture with an isopropanol organic solution to obtain chloromethyl naphthalene quinoline quaternary ammonium salt; adding urotropine, formic acid, potassium iodide, N-dimethylformamide, nonanol polyoxyethylene ether and water into chloromethyl naphthalene quinoline quaternary ammonium salt according to a certain proportion, continuing to react for 12 hours, and obtaining an intermediate product by reduced pressure distillation after the reaction is finished; heating to 80-100 ℃ for reaction for 10 hours, cooling to room temperature, filtering, extracting, and distilling under reduced pressure to prepare the quaternary ammonium salt type high-temperature acidification corrosion inhibitor, wherein chloromethyl naphthalene has more benzene ring structures compared with a common benzyl chloride quaternary ammonium reagent, and when a quaternary ammonium salt molecular structure contains more pi electrons, corrosion inhibitor molecules are easier to adsorb on a metal surface, so that the corrosion inhibitor has better corrosion inhibition performance, and has good compatibility, dispersibility and surface activity in acid liquor; the reaction conditions and the operation are simple, the generated product can be directly used as an acidizing corrosion inhibitor, quinoline and chloromethyl naphthalene are firstly mixed according to a ratio of 1.
The second embodiment:
25 parts of chloromethyl naphthalene quinoline quaternary ammonium salt; 3 parts of urotropin; 50 parts of formic acid; 1 part of potassium iodide; 1.5 parts of N, N-dimethylformamide; 5 parts of nonanol polyoxyethylene ether; 14.5 parts of water.
Firstly, mixing quinoline and chloromethyl naphthalene, and then reacting the mixture with an isopropanol organic solution to obtain chloromethyl naphthalene quinoline quaternary ammonium salt; adding urotropine, formic acid, potassium iodide, N-dimethylformamide, nonanol polyoxyethylene ether and water into chloromethyl naphthalene quinoline quaternary ammonium salt according to a certain proportion, continuing to react for 12 hours, and obtaining an intermediate product by reduced pressure distillation after the reaction is finished; heating to 80-100 ℃ for reaction for 10 hours, cooling to room temperature, filtering, extracting, and distilling under reduced pressure to prepare the quaternary ammonium salt type high-temperature acidification corrosion inhibitor, wherein chloromethyl naphthalene has more benzene ring structures compared with a common benzyl chloride quaternary ammonium reagent, and when a quaternary ammonium salt molecular structure contains more pi electrons, corrosion inhibitor molecules are easier to adsorb on a metal surface, so that the corrosion inhibitor has better corrosion inhibition performance, and has good compatibility, dispersibility and surface activity in acid liquor; the reaction conditions and the operation are simple, the generated product can be directly used as an acidification corrosion inhibitor, quinoline and chloromethyl naphthalene are firstly mixed according to the proportion of 1.
Example three:
25 parts of chloromethyl naphthalene quinoline quaternary ammonium salt; 2 parts of urotropin; 50.5 parts of formic acid; 1 part of potassium iodide; 1.5 parts of N, N-dimethylformamide; 5 parts of nonanol polyoxyethylene ether; and 15 parts of water.
Firstly, mixing quinoline and chloromethyl naphthalene, and then reacting the mixture with an isopropanol organic solution to obtain chloromethyl naphthalene quinoline quaternary ammonium salt; adding urotropine, formic acid, potassium iodide, N-dimethylformamide, nonanol polyoxyethylene ether and water in a certain proportion into chloromethyl naphthalene quinoline quaternary ammonium salt, continuing to react for 12 hours, and carrying out reduced pressure distillation after the reaction is finished to obtain an intermediate product; heating to 80-100 ℃ for reaction for 10 hours, cooling to room temperature, filtering, extracting, and distilling under reduced pressure to obtain a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor, wherein chloromethyl naphthalene has more benzene ring structures compared with a common benzyl chloride quaternary ammonium reagent, and when a quaternary ammonium salt molecular structure contains more pi electrons, corrosion inhibitor molecules are more easily adsorbed on the metal surface, so that the corrosion inhibitor has better corrosion inhibition performance, and has good compatibility, dispersibility and surface activity in acid liquor; the reaction conditions and the operation are simple, the generated product can be directly used as an acidizing corrosion inhibitor, quinoline and chloromethyl naphthalene are firstly mixed according to a ratio of 1.
Example four:
25 parts of chloromethyl naphthalene quinoline quaternary ammonium salt; 2 parts of urotropin; 51 parts of formic acid; 1 part of potassium iodide; 1.5 parts of N, N-dimethylformamide; 4.5 parts of nonanol polyoxyethylene ether; and 15 parts of water.
Firstly, mixing quinoline and chloromethyl naphthalene, and then reacting the mixture with an isopropanol organic solution to obtain chloromethyl naphthalene quinoline quaternary ammonium salt; adding urotropine, formic acid, potassium iodide, N-dimethylformamide, nonanol polyoxyethylene ether and water into chloromethyl naphthalene quinoline quaternary ammonium salt according to a certain proportion, continuing to react for 12 hours, and obtaining an intermediate product by reduced pressure distillation after the reaction is finished; heating to 80-100 ℃ for reaction for 10 hours, cooling to room temperature, filtering, extracting, and distilling under reduced pressure to obtain a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor, wherein chloromethyl naphthalene has more benzene ring structures compared with a common benzyl chloride quaternary ammonium reagent, and when a quaternary ammonium salt molecular structure contains more pi electrons, corrosion inhibitor molecules are more easily adsorbed on the metal surface, so that the corrosion inhibitor has better corrosion inhibition performance, and has good compatibility, dispersibility and surface activity in acid liquor; the reaction conditions and the operation are simple, the generated product can be directly used as an acidizing corrosion inhibitor, quinoline and chloromethyl naphthalene are firstly mixed according to a ratio of 1.
The corrosion inhibitors of the above examples 1-4 were tested for their performance, and all of the corrosion inhibitors of the examples maintained good corrosion inhibition performance at 160 ℃, wherein the corrosion rate of each corrosion inhibitor at 160 ℃ was 60 g.m -2 ·h -1 The following.
According to petroleum and natural gas industry standard SY/T5404-2019 corrosion inhibitor performance test method evaluation index for acidification, a high-temperature high-pressure dynamic coupon corrosion experiment is adopted to evaluate the corrosion inhibitor performance, and the corrosion inhibition performance test result of the corrosion inhibitor in the embodiment is shown in figure 2 and table 1.
Table 1 example a corrosion inhibitor performance test results
As can be seen from Table 1, the corrosion inhibitor of the present invention can meet the industry standard at 160 ℃. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A quaternary ammonium salt type high-temperature acidizing corrosion inhibitor is characterized in that: the feed is prepared from the following raw materials in parts by weight: 25-26 parts of chloromethyl naphthalene quinoline quaternary ammonium salt; 2-3 parts of urotropin; 49-51 parts of formic acid; 0.5-1.5 parts of potassium iodide; 0.5-1.5 parts of N, N-dimethylformamide; 4-5 parts of nonanol polyoxyethylene ether; 14.5-15.5 parts of water.
2. A preparation method of a quaternary ammonium salt type high-temperature acidizing corrosion inhibitor is characterized by comprising the following steps: the method comprises the following steps:
step 1: firstly, mixing quinoline and chloromethyl naphthalene, and then reacting the mixture with an isopropanol organic solution to obtain chloromethyl naphthalene quinoline quaternary ammonium salt;
and 2, step: adding urotropine, formic acid, potassium iodide, N-dimethylformamide, nonanol polyoxyethylene ether and water into chloromethyl naphthalene quinoline quaternary ammonium salt according to a certain proportion, continuing to react for 12 hours, and obtaining an intermediate product by reduced pressure distillation after the reaction is finished; and heating to 80-100 ℃ for reaction for 10 hours, cooling to room temperature, filtering, extracting, and distilling under reduced pressure to obtain the quaternary ammonium salt high-temperature acidification corrosion inhibitor.
3. The method for preparing the quaternary ammonium salt type high-temperature acidizing corrosion inhibitor according to the claim 2, which is characterized in that: in the step 1, chloromethyl naphthalene has more benzene ring structures compared with a commonly used benzyl chloride quaternary ammonium reagent, and when the quaternary ammonium salt molecular structure contains more pi electrons, corrosion inhibitor molecules are easier to adsorb on the metal surface, so that the corrosion inhibitor has better corrosion inhibition performance.
4. The method for preparing the quaternary ammonium salt type high-temperature acidizing corrosion inhibitor according to the claim 2, which is characterized in that: in the step 2, the modified starch has good compatibility, dispersibility and surface activity in acid liquor; the reaction condition and operation are simple, and the generated product can be directly used as an acidizing corrosion inhibitor.
5. The method for preparing the quaternary ammonium salt type high-temperature acidizing corrosion inhibitor according to the claim 2, which is characterized in that: in step 1, quinoline and chloromethylnaphthalene are first mixed according to 1.
6. The method for preparing the quaternary ammonium salt type high-temperature acidizing corrosion inhibitor according to the claim 2, which is characterized in that: in the step 1, the proportion of isopropanol is 45%, the reaction time is 5 hours, and the reaction temperature is 85 ℃, so that chloromethyl naphthalene quinoline quaternary ammonium salt can be obtained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285925A (en) * | 2023-02-24 | 2023-06-23 | 山东奥必通石油技术股份有限公司 | High-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid and preparation method thereof |
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| CN114634803A (en) * | 2022-04-13 | 2022-06-17 | 西南石油大学 | Ultrahigh-temperature-resistant acidizing corrosion inhibitor suitable for 180-200 ℃ and preparation method thereof |
| CN114763614A (en) * | 2021-01-13 | 2022-07-19 | 中国石油天然气股份有限公司 | Corrosion inhibitor suitable for acidification at 200 ℃, preparation method and application |
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Patent Citations (4)
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| CN108359438A (en) * | 2018-02-05 | 2018-08-03 | 西安石油大学 | One kind being suitable for 160 DEG C ~ 180 DEG C of high-temperature acidification corrosion inhibitors and its preparation method and application |
| CN114763614A (en) * | 2021-01-13 | 2022-07-19 | 中国石油天然气股份有限公司 | Corrosion inhibitor suitable for acidification at 200 ℃, preparation method and application |
| CN113046046A (en) * | 2021-03-29 | 2021-06-29 | 中海油常州涂料化工研究院有限公司 | Corrosion inhibitor suitable for hydrochloric acid system with mass fraction of 20-28% and preparation method thereof |
| CN114634803A (en) * | 2022-04-13 | 2022-06-17 | 西南石油大学 | Ultrahigh-temperature-resistant acidizing corrosion inhibitor suitable for 180-200 ℃ and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116285925A (en) * | 2023-02-24 | 2023-06-23 | 山东奥必通石油技术股份有限公司 | High-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid and preparation method thereof |
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