AU2021100133A4 - The preparation method and application of a Mannich base quaternary ammonium salt - Google Patents
The preparation method and application of a Mannich base quaternary ammonium salt Download PDFInfo
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- AU2021100133A4 AU2021100133A4 AU2021100133A AU2021100133A AU2021100133A4 AU 2021100133 A4 AU2021100133 A4 AU 2021100133A4 AU 2021100133 A AU2021100133 A AU 2021100133A AU 2021100133 A AU2021100133 A AU 2021100133A AU 2021100133 A4 AU2021100133 A4 AU 2021100133A4
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- quaternary ammonium
- ammonium salt
- mannich base
- base quaternary
- corrosion
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 150000003242 quaternary ammonium salts Chemical class 0.000 title abstract description 4
- 230000007797 corrosion Effects 0.000 claims abstract description 57
- 238000005260 corrosion Methods 0.000 claims abstract description 57
- 239000003112 inhibitor Substances 0.000 claims abstract description 34
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 28
- -1 quaternary ammonium salt compound Chemical class 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 230000001954 sterilising effect Effects 0.000 claims abstract description 11
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 6
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 5
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 claims description 5
- 229940073608 benzyl chloride Drugs 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 8
- 239000000417 fungicide Substances 0.000 abstract description 7
- 238000001308 synthesis method Methods 0.000 abstract description 2
- 239000003899 bactericide agent Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000855 fungicidal effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910000926 A-3 tool steel Inorganic materials 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 208000005156 Dehydration Diseases 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C243/00—Compounds containing chains of nitrogen atoms singly-bound to each other, e.g. hydrazines, triazanes
- C07C243/40—Hydrazines having nitrogen atoms of hydrazine groups being quaternised
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C241/00—Preparation of compounds containing chains of nitrogen atoms singly-bound to each other, e.g. hydrazines, triazanes
- C07C241/02—Preparation of hydrazines
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/086—Organic or non-macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1612—Non-macromolecular compounds
- C09D5/1625—Non-macromolecular compounds organic
-
- 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
-
- 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
- C23F11/14—Nitrogen-containing compounds
- C23F11/141—Amines; Quaternary ammonium compounds
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a preparation method and application of a Mannich base
quaternary ammonium salt. The invention also provides the application of the Mannich base
quaternary ammonium salt compound in the corrosion and sterilization of steel pipelines in oil
exploitation. As a bactericidal and corrosion inhibitor, the Mannich base quaternary ammonium
salt compound of the invention can simplify the complicated combination of a variety of
corrosion inhibitors and fungicides, it has excellent corrosion inhibition performance and
certain bactericidal ability, simple synthesis method, mild reaction conditions, low cost, and
various available raw material source.
Description
The preparation method and application of a Mannich base quaternary
ammonium salt
[01] The invention relates to the field of metal corrosion and protection, in particular to a Mannich base quaternary ammonium salt compound as well as its preparation method and application.
[02] With the continuous exploitation of oil fields and the increase of water content, the problem of bacteria breeding and corrosion has become increasingly prominent, causing huge economic losses every year. Crude oil extracted from oilfield operation environment still contains oilfield water with salts (sodium chloride, magnesium chloride, calcium chloride and sulfate) after dehydration treatment. The existence of these chlorides makes a large amount of Cl- exist in the medium, which poses a great threat to petroleum equipment. There are also various microbial communities in the oilfield production system, which cause great losses to the oilfield equipment and pipeline corrosion. The most common bacteria is sulfate-reducing bacteria (SRB), which participates in the metal corrosion process under specific conditions and has the greatest impact on oilfield production.
[03] Therefore, adding fungicides and corrosion inhibitors can effectively and economically achieve the purpose of anticorrosion and bacterial control, and adding fungicides and corrosion inhibitors has become an inevitable process in many domestic oil and gas fields. Usually, the treatment method for oil pipeline anticorrosion and sterilization by oilfield technicians is to compound corrosion inhibitor and bactericide and inject them into formation water.
[04] However, the main shortcoming of the above method is that there are too many kinds of corrosion inhibitors and fungicides and the selection and match of which is complex, so the compound ratio is difficult to achieve the best effect.
[05] In order to solve the defects of the prior art, the invention provides a Mannich base quaternary ammonium salt compound as well as its preparation method Taking Mannich base quaternary ammonium salt as bactericide and corrosion inhibitor. It can reduce the inconvenience of the combination of a variety of corrosion inhibitors and fungicides, it has excellent corrosion inhibition performance and certain bactericidal ability, simple synthesis method, mild reaction conditions, low cost, and various available raw material source.
[06] Technical scheme:
[07] The chemical structure formula of Mannich base quaternary ammonium salt compound is as follows
0 NH 2 CH-N*-CH 2 / I CI H 2C H CH 2
0
[08] The bactericidal corrosion inhibitor disclosed in this paper includes the Mannich base quaternary ammonium salt compound of claim 1.
[09] The bactericidal corrosion inhibitor according to claim 2 is characterized in that Mannich base quaternary ammonium salt compounds are dissolved in organic solvents.
[010] The preparation method of Mannich base quaternary ammonium salt compound is also provided with the following steps:
[011] Step 1: Cyclohexanone and hydrazine hydrate are added to ethanol in the molar ratio of 0.9:1.0, and the total amount of solvent needs to be controlled to 35% of the raw material amount and below in terms of mass fraction. Adding glutaraldehyde, and the molar ratio of glutaraldehyde to said cyclohexanone is 1:1. The pH value of the system is adjusted with hydrochloric acid in the range of 4-5, while controlling the reaction time in the range of 2-2.5h with the reaction temperature of 351°C.
[012] Step 2: After the reaction is completed, benzyl chloride is added and the molar ratio of benzyl chloride to cyclohexanone is 8:9, the temperature is raised to ±1°C, the pH is adjusted by hydrochloric acid in the range of 2-3, the reaction time is controlled for 1h. Finally, the obtained compound is cooled to room temperature, which is the Mannich base quaternary ammonium salt compound of claim 1.
[013] An application is also provided of the Mannich base quaternary ammonium salt compound in corrosion and sterilization of steel pipelines in oil exploitation.
[014] Beneficial effects:
[015] The main component of the bactericidal corrosion inhibitor provided by the invention belongs to quaternary ammonium salt, which is a typical adsorption type corrosion inhibitor. It can form an adsorption film on the surface of A3 steel to slow down the corrosion rate of salt water medium, prevent the corrosion of steel by sulfate reducing bacteria (SRB) to a certain extent while preventing the corrosion of steel by Cl -, and further slow down the corrosion of steel. It is suitable for anticorrosion and sterilization of steel pipeline in oil exploitation. It avoids the inconvenience of compounding a variety of corrosion inhibitors and bactericides. At the same time, it can also reduce the cost to a certain extent. It has practical application value in oilfield operation environment.
[016] The reaction principle of the biocidal corrosion inhibitor of the present invention is reliable, the reaction raw materials are economically available, the production process is simple, the reaction conditions are mild, the properties are stable, the water solubility is good, and it is favorable for application.
[017] Example 1 Example of bactericidal corrosion inhibitor preparation
[018] Step 1: 88.2g of cyclohexanone (C6 H 1oO, relative molecular weight of 98) and 96.90ml of hydrazine hydrate (relative density of 1.032g / ml at 20 °C, N H 2 4 - H 2 0,
relative molecular weight of 50)) were added into 7 ml of 95% ethanol (density of 0.78 g / ml) (molar ratio of cyclohexanone to hydrazine hydrate was 0.9:1.0). That is to say, the total amount of solvent should be controlled below 35% (mass fraction) of the total amount of raw materials (cyclohexanone and hydrazine hydrate solute), 0.9mol glutaraldehyde being added while stirring, the pH value of the system being of 4 ~ 5 by hydrochloric acid, the reaction time being of 2 ~ 2.5h, and the reaction temperature being at 35 1 °C.
[019] Step 2. After the reaction is completed, 0.8 mol of benzyl chloride is added, the temperature is raised to 40 1 °C, the pH is adjusted by hydrochloric acid in the range of 2 ~ 3, the reaction time is controlled for 1 h and the obtained compound is finally cooled to room temperature.
[020] Step 3: Dissolving the Mannich base quaternary ammonium compound in the organic solvent in proportion, then mixed with distilled water and stirring them well.
[021] The reason for dissolving the quaternary ammonium compound of Mannich base in organic solvents here is that the organic solvents play the role of solubilisation, which is the process by which insoluble drugs increase their solubility in the solvent and form a solution in the presence of surfactants. The amount of solubilising agent: at a certain temperature, a sufficient amount of solubilising agent can be added to the drug to produce a clarified solution, which remains clear even after dilution, but if the ratio is not appropriate, a clear solution cannot be obtained or the solution will become turbid when diluting.
[022] Preferably, in Step 3, the mass percentage of each component is as follows: main corrosion inhibitor: 30-35%; organic solvent: 15-20%; distilled water: residual.
[023] Example 2 Corrosion inhibition performance test of bactericide and corrosion inhibitor
[024] As the oil field pipeline is mainly N80 steel, different types of N80 steel are adopted to simulate the experiment in order to test the corrosion inhibition performance of the bactericidal inhibitor provided by the invention. The test conditions are as follows: under the conditions of normal pressure and constant temperature of 350 C, with 3%NaCl solution as corrosion medium. The N80 steel sheet is suspended in 3% NaCl solution by static weight loss method, and placed in constant temperature water bath at 65 °Cfor 6h. Measuring the quality change of steel sheet with and without the bactericidal corrosion inhibitor in example 1, and calculating the corrosion inhibition rate, in which the concentration of bactericidal corrosion inhibitor is slowly increased, and the test results are as follows:
[025] Table 1 Corrosion inhibition test results of bactericide and corrosion inhibitor in example 1 with different dosage
Dosage of bactericide and Corrosion rate (mm/a) corrosion inhibitor (mg/L
) 0 0.0793 50 0.0266 100 0.0241 Bactericidal 150 0.0216 corrosion inhibitor of 200 0.0205 Example 1 150 0.0212 200 0.0201
[026] It can be seen from table 1 that when the concentration of bactericidal corrosion inhibitor is 0, that is, when no corrosion inhibitor is added, the corrosion rate is 0.0793mm/a, and the surface of carbon steel is seriously corroded; after the addition of corrosion inhibitor, the corrosion rate of carbon steel surface becomes obviously slower, and with the increase of the concentration of bactericidal corrosion inhibitor, the corrosion rate becomes slower and slower, indicating that the bactericidal corrosion inhibitor in the application has excellent corrosion inhibition effect.
[027] Example 3 Bactericidal performance test of bactericidal corrosion inhibitor
[028] According to the Standard SY/T5329-1994, the bactericidal performance of the bactericide and corrosion inhibitor in this application is evaluated by the method of extinction dilution, and the effect is compared with that of market bactericide 1227 and oilfield bactericide SJ-66. The test results are shown in Table 2.
1227 sterilization SJ-66 sterilization inhibtorn Dosage (mg/L) rate rate sterilizationrate (%) (0) (0)
10 99.91 97.83 58.33 30 99.9 95.83 90 50 100 99.78 90 70 100 99.85 95.83 100 100 100 95.83
[029] It can be seen from the above Table 2 that the sterilization rate of the sterilization inhibitor in this application has almost reached the sterilization efficiency of the market fungicide 1227 and the oilfield fungicide SJ-66; To sum up, the sterilization and corrosion inhibitor of the invention has excellent corrosion inhibition effect, and it can also kill SRB to a certain extent and further slow down the corrosion of steel.
[030] Although the invention has been described with reference to specific examples, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms, in keeping with the broad principles and the spirit of the invention described herein.
[031] The present invention and the described embodiments specifically include the best method known to the applicant of performing the invention. The present invention and the described preferred embodiments specifically include at least one feature that is industrially applicable
Claims (6)
1. The chemical structure formula of Mannich base quaternary ammonium salt compound is as follows:
0 NH 2 CH-N*-CH 2 / | CI H 2C H CH 2 / \
2. A bactericidal corrosion inhibitor, which is characterized in that it includes the Mannich base quaternary ammonium salt compound of claim 1.
3. The bactericidal corrosion inhibitor according to claim 2 is characterized in that Mannich base quaternary ammonium salt compounds are dissolved in organic solvents.
4. The preparation method of Mannich base quaternary ammonium salt compound according to claim 1 is characterized in the following steps:
Step 1: Cyclohexanone and hydrazine hydrate are added to ethanol in the molar ratio of 0.9:1.0, and the total amount of solvent needs to be controlled to 35% of the raw material amount and below in terms of mass fraction. Adding glutaraldehyde, and the molar ratio of glutaraldehyde to said cyclohexanone is 1:1. The pH value of the system is adjusted with hydrochloric acid in the range of 4-5, while controlling the reaction time in the range of 2-2.5h with the reaction temperature of 35±1°C.
Step 2: After the reaction is completed, benzyl chloride is added and the molar ratio of benzyl chloride to cyclohexanone is 8:9, the temperature is raised to 40±1°C, the pH is adjusted by hydrochloric acid in the range of 2-3, the reaction time is controlled for 1h. Finally, the obtained compound is cooled to room temperature, which is the Mannich base quaternary ammonium salt compound of claim 1.
5. The preparation method of Mannich base quaternary ammonium salt compound according to claim 1 is characterized in that when glutaraldehyde is added in step 1, it is added while stirring.
6. The application of the Mannich base quaternary ammonium salt compound of claim 1 in corrosion and sterilization of steel pipelines in oil exploitation.
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| AU2021100133A AU2021100133A4 (en) | 2021-01-11 | 2021-01-11 | The preparation method and application of a Mannich base quaternary ammonium salt |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717065A (en) * | 2021-10-11 | 2021-11-30 | 西安石油大学 | Novel Mannich base type acidizing corrosion inhibitor and preparation method thereof |
| CN117512599A (en) * | 2023-11-17 | 2024-02-06 | 武汉三友石化有限公司 | Preparation method and application of high-temperature-resistant and corrosion-inhibition water-soluble corrosion inhibitor |
| CN117512600A (en) * | 2023-10-28 | 2024-02-06 | 安徽红太阳新材料有限公司 | High-temperature acidification corrosion inhibitor |
-
2021
- 2021-01-11 AU AU2021100133A patent/AU2021100133A4/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717065A (en) * | 2021-10-11 | 2021-11-30 | 西安石油大学 | Novel Mannich base type acidizing corrosion inhibitor and preparation method thereof |
| CN117512600A (en) * | 2023-10-28 | 2024-02-06 | 安徽红太阳新材料有限公司 | High-temperature acidification corrosion inhibitor |
| CN117512599A (en) * | 2023-11-17 | 2024-02-06 | 武汉三友石化有限公司 | Preparation method and application of high-temperature-resistant and corrosion-inhibition water-soluble corrosion inhibitor |
| CN117512599B (en) * | 2023-11-17 | 2024-04-12 | 武汉三友石化有限公司 | Preparation method and application of high-temperature-resistant and corrosion-inhibition water-soluble corrosion inhibitor |
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