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Corrosion inhibitor with bactericidal and scale-inhibiting functions and preparation method thereof

A technology of corrosion inhibitors and bactericides, which is applied in the field of corrosion inhibitors with bactericidal and scale-inhibiting functions and its preparation, can solve the problems of no corrosion inhibitors, reduce labor costs and time, avoid the addition of additives, and the scope of application wide effect

Active Publication Date: 2021-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is that there is no corrosion inhibitor with the functions of sterilization, scale inhibition and corrosion inhibition in the prior art, and a new corrosion inhibitor with the functions of sterilization and scale inhibition is provided, which has Advantages of sterilization, scale and corrosion inhibition

Method used

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  • Corrosion inhibitor with bactericidal and scale-inhibiting functions and preparation method thereof
  • Corrosion inhibitor with bactericidal and scale-inhibiting functions and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] According to mass percentage, weigh 10 g of imidazoline quaternary ammonium salt, 12 g of dialkyl quaternary ammonium salt, 5 g of ethanol, 6 g of potassium hydroxyethylidene diphosphonate, 1.5 g of thiourea, and 65.5 g of water.

[0019] Add 40g of deionized water into the reactor, add 1.5g of thiourea, 10g of imidazoline quaternary ammonium salt, stir for 0.5 hours, add 12g of dialkyl quaternary ammonium salt, heat to 30°C, stir for 0.2 hours, add hydroxyethylidene di Add 6 g of potassium phosphonate, 5 g of ethanol, and 25.5 g of deionized water. After stirring for 0.1 hour, cool down to 20°C, continue stirring for 0.1 hour, and filter to obtain corrosion inhibitor product A with functions of sterilization, scale inhibition and corrosion inhibition.

Embodiment 2

[0021] According to mass percentage, weigh 24g of alkylpyridine quaternary ammonium salt, 14g of benzalkonium chloride, 16g of ethylene glycol, 10g of sodium gluconate, 2g of thiourea, 2.4g of potassium iodide, and 131.6g of water.

[0022] Add 90g of deionized water into the reactor, add 2g of thiourea, 2.4g of potassium iodide, 24g of alkylpyridine quaternary ammonium salt, stir for 1 hour, add 14g of benzalkonium chloride, heat to 45°C, stir for 0.5 hours, add gluconic acid Add 10g of sodium, 16g of ethylene glycol, and 41.6g of deionized water. After stirring for 1 hour, cool down to 30°C, continue stirring for 0.5 hours, and filter to obtain corrosion inhibitor product B with functions of sterilization, scale inhibition and corrosion inhibition.

Embodiment 3

[0024] According to mass percentage, weigh 15g of imidazoline, 16g of polyquaternium salt, 10g of butanol, 3g of polyaspartic acid, 2g of potassium hydroxyethylidene diphosphonate, 5g of glutaraldehyde, 1.5g of potassium iodide, and 47.5g of water.

[0025] Add 30g of deionized water into the reactor, add 1.5g of potassium iodide, 15g of imidazoline, stir for 0.8 hours, add 16g of polyquaternium salt, heat to 40°C, stir for 0.4 hours, add 3g of polyaspartic acid, hydroxyethylidene Potassium diphosphonate 2g, ethylene glycol 10g, and deionized water 17.5g, stirred for 0.7 hours, cooled to 25°C, added 5g of glutaraldehyde, continued to stir for 0.3 hours, filtered to obtain bactericidal, scale and corrosion inhibitors Functional corrosion inhibitor product C.

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Abstract

The invention relates to a corrosion inhibitor with the functions of sterilization and scale inhibition and a preparation method thereof, which mainly solves the problem that there is no corrosion inhibitor with the functions of sterilization, scale inhibition and corrosion inhibition in the prior art. The present invention adopts a corrosion inhibitor with bactericidal and scale-inhibiting functions and a preparation method thereof. The components of the corrosion inhibitor include: 0.5-20% of corrosion inhibitor, 5-20% of bactericide, solvent The technical solution of 5-10%, scale inhibitor 1-10%, synergist 1-5%, and water 35-70% solves the above problems well, and can be used in the environment that provides corrosion inhibitor protection for the pipeline surface .

Description

technical field [0001] The invention belongs to the technical field of corrosion control of metal materials, and in particular relates to a corrosion inhibitor with functions of sterilization, scale inhibition and corrosion inhibition and a preparation method thereof, which is suitable for environments where corrosion inhibitor protection is provided on the surface of pipelines, such as long-distance natural gas pipelines , Natural gas gathering and transportation pipelines, other gas or liquid pipelines containing corrosive media, gas transportation pipelines containing a small amount of liquid, oil and gas wells, oil and gas field produced water pipelines and sewage pipelines, etc. Background technique [0002] Natural gas pipelines generally contain CO 2 , H 2 S, water and organic acids and other corrosive media, CO 2 There is usually CO in the pipeline 2 , water and other corrosive impurities. CO in oil and gas field produced water 2 、H 2 S, bacteria and ions that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/10
CPCC23F11/10
Inventor 蒋秀屈定荣许可陶彬
Owner CHINA PETROLEUM & CHEM CORP
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