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Water-soluble corrosion inhibitor

A water-soluble and corrosion inhibitor technology, applied in the field of water-soluble corrosion inhibitors, can solve the problems of poor dispersibility of raw material oil and failure to develop, and achieve the effect of good dispersibility and corrosion prevention

Active Publication Date: 2019-07-16
上海贵通新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional oilfield pipeline corrosion inhibitors are mainly heterocyclic compounds containing heteroatoms such as N, P, and S, etc. Most of them are oil-soluble, and their dispersion performance in raw oil is not good, so they fail to exert their due effects

Method used

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Examples

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example 1

[0020] Water-soluble corrosion inhibitor, prepared by the following method:

[0021] Step 1. Put palmitic acid, activated alumina, toluene, and zeolite into the reactor, stir, heat up to 80°C, put in N-phenylethylenediamine, heat up to 180°C, and heat up to temperature at a heating rate of 5°C / min 220℃, heat preservation for 2h, heat up to 260℃ at a heating rate of 2℃ / min, keep for 3h, carry out amidation reaction, distill toluene under reduced pressure, remove the water produced by the reaction, and cool to 120℃ to obtain oil-soluble An intermediate, wherein the molar ratio of palmitic acid to N-phenylethylenediamine is 1:1.2;

[0022] Step 2: Mix the oil-soluble intermediate with methyl bromide and reflux at 50°C for 4 hours to perform quaternization to obtain a water-soluble intermediate, wherein the molar ratio of the oil-soluble intermediate to methyl bromide is 1:1.2;

[0023] Step 3: Mix the water-soluble intermediate with 1-butyl-3-methylimidazole tetrafluoroborate in a mass...

example 2

[0026] Water-soluble corrosion inhibitor, prepared by the following method:

[0027] Step 1. Put palmitic acid, activated alumina, sulfonic acid, toluene, and zeolite into the reaction kettle, stir, heat up to 80°C, put in N-phenylethylenediamine, heat up to 180°C, and heat at 5°C / min The rate is increased to 220°C, the temperature is kept for 2h, and the heating rate is 2°C / min to 260°C, and the temperature is kept for 3h. The amidation reaction is carried out. The toluene is distilled off under reduced pressure, and the water produced by the reaction is removed and cooled to 120°C Obtain an oil-soluble intermediate, wherein the molar ratio of palmitic acid to N-phenylethylenediamine is 1:1.2;

[0028] Step 2: Mix the oil-soluble intermediate with methyl bromide and reflux at 50°C for 4 hours to perform quaternization to obtain a water-soluble intermediate, wherein the molar ratio of the oil-soluble intermediate to methyl bromide is 1:1.2;

[0029] Step 3. Using bromo-n-butane and ...

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Abstract

The invention discloses a water-soluble corrosion inhibitor. The water-soluble corrosion inhibitor is prepared by the method comprising the following steps: step 1, pouring palmitic acid, a catalyst,methylbenzene and zeolite into a reaction kettle, stirring, heating to reach 80 DEG C, pouring N-phenyl ethylenediamine, and heating to obtain an oil-soluble intermediate; step 2, mixing the oil-soluble intermediate with bromomethane, carrying out backflow, and carrying out a quaternization reaction to obtain a water-soluble intermediate; step 3, mixing the water-soluble intermediate with 1-butyl-3-methylimidazolium tetrafluoroborate to obtain a modified intermediate; and step 4, mixing the modified intermediate with dodecyl benzyl ammonium chloride and octaphenyl polyoxyethyiene, and then dissolving the mixture into an organic solvent with an equal mass to obtain the water-soluble corrosion inhibitor. The water-soluble corrosion inhibitor is high in dispersibility in raw material oil; anda compact and firm protection film is formed on the surface of an oil field pipeline, so that the corrosion of the raw material oil to the oil field pipeline is effectively prevented.

Description

Technical field [0001] The invention relates to the technical field of petroleum processing. More specifically, the present invention relates to a water-soluble corrosion inhibitor. Background technique [0002] In the process of oil exploitation, oil and gas equipment has long-term contact with strong corrosive media, causing corrosion of equipment pipelines. Especially when many oil and gas facilities work under conditions of high temperature, high pressure and high flow rate, the corrosion problem is even more prominent and serious. Corrosion not only causes economic losses such as the destruction of production equipment and oil and gas leakage, but also has potential unsafe hazards, such as fire and explosion, environmental pollution, etc., which affect the normal production of oil and gas fields. At present, there are many measures against oilfield pipeline corrosion, such as coating the pipeline, cathodic protection, and using special corrosion inhibitors. The use of cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/10
CPCC23F11/10
Inventor 徐文忠
Owner 上海贵通新材料科技有限公司
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