High-temperature compound corrosion inhibitor and preparation method thereof

A composite corrosion inhibitor, high temperature technology, applied in the field of high temperature composite corrosion inhibitor, can solve the problem of large addition amount, and achieve the effect of reducing the use concentration, improving stability and increasing comprehensive economic benefits

Inactive Publication Date: 2013-06-05
江苏昊隆换热器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, most of the high-temperature corrosion inhibitors are composed of sulfurous acid, phosphate or phosphate ester, which are easy to make, but the addition amount

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 36kg of tributyl sulfite and 10kg of phosphoric acid ester into the reaction kettle, stir for 60min, then add 6kg of thiourea, 3kg of aniline, 6kg of acetophenone, 7kg of isopropanol, and 30kg of water in sequence, raise the temperature to 100°C, and finally add 2kg of polysiloxane, stirred for 2 hours, and cooled to obtain a high-temperature composite corrosion inhibitor.

Embodiment 2

[0014] Add 40kg of tributyl sulfite and 8kg of phosphoric acid ester into the reaction kettle, stir for 60min, then add 10kg of thiourea, 5kg of aniline, 4kg of acetophenone, 5kg of isopropanol, and 25kg of water in sequence, raise the temperature to 100°C, and finally add 3kg of polysiloxane, stirred for 3 hours, and cooled to obtain a high-temperature composite corrosion inhibitor.

Embodiment 3

[0016] Add 36kg of tributyl sulfite and 15kg of phosphoric acid ester into the reaction kettle, stir for 60min, then add 5kg of thiourea, 1kg of aniline, 8kg of acetophenone, 10kg of isopropanol, and 24.2kg of water in sequence, raise the temperature to 100°C, and finally Add 0.8 kg of polysiloxane, stir for 4 hours, and cool to obtain a high-temperature composite corrosion inhibitor.

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PUM

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Abstract

The invention discloses a high-temperature compound corrosion inhibitor and a preparation method thereof. The high-temperature compound corrosion inhibitor comprises the following components in percentage by weight: 34-40% of tributyl phosphite, 8-15% of phosphate, 5-10% of isopropyl alcohol, 5-10% of thiourea, 1-5% of phenylamine, 4-8% of acetophenone, 0.5-3% of polysiloxane and the balance of water. According to the high-temperature compound corrosion inhibitor, tributyl phosphite and phosphate are taken as raw materials, the raw materials are synergistic, the stability of an adsorption layer is improved, and the working concentration of the corrosion inhibitor is reduced; and the high-temperature compound corrosion inhibitor prepared by the invention has better corrosion resistance under the conditions of high temperature and high pressure and has significance in reduction of loss of equipment and pipelines and increase of comprehensive economic benefit.

Description

technical field [0001] The invention relates to a high-temperature composite corrosion inhibitor. Background technique [0002] Corrosion is often an extremely important destructive factor in modern industry and life. It brings huge economic losses and social harm to human beings. Due to sudden corrosion fractures, accidents of planes, trains, ships, and chemical equipment damage or There are reports of explosions, and the leakage of pollutants often causes serious environmental pollution. The use of corrosion inhibitors is a commonly used anti-corrosion measure. When added to a corrosive environment, it can have physical and chemical interactions with the metal surface, thereby significantly reducing the corrosion of metal materials. The use of corrosion inhibitors does not require special equipment or changes in metal components. nature. [0003] However, at present, most of the high-temperature corrosion inhibitors are composed of sulfurous acid, phosphate or phosphate ...

Claims

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Application Information

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IPC IPC(8): C23F11/173
Inventor 孙德生丁建
Owner 江苏昊隆换热器有限公司
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