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A composite corrosion inhibitor of triphenylamine aldehyde derivatives and amino acids and its application method

A composite corrosion inhibitor, triphenylamine aldehyde technology, applied in the field of triphenylamine aldehyde derivatives and amino acid composite corrosion inhibitors, can solve the problems of insignificant corrosion inhibition effect, high economic cost, low economic cost, etc. The effects of popularization and application, low economic cost and low dosage

Inactive Publication Date: 2019-07-19
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Another object of the present invention is to provide a composite corrosion inhibitor of triphenylamine aldehyde derivatives and amino acids, aiming at the problems of large amount of corrosion inhibitor used in the prior art, inconspicuous corrosion inhibition effect and high economic cost, etc. Used for metal anti-corrosion in acidic medium, with obvious anti-corrosion effect, small dosage, low economic cost, biodegradable, suitable for large-scale industrial application

Method used

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  • A composite corrosion inhibitor of triphenylamine aldehyde derivatives and amino acids and its application method
  • A composite corrosion inhibitor of triphenylamine aldehyde derivatives and amino acids and its application method
  • A composite corrosion inhibitor of triphenylamine aldehyde derivatives and amino acids and its application method

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Embodiment 1

[0029] According to weight percentage, triphenylamine dialdehyde 2%, arginine 3%, propynyl alcohol 10%, potassium bromide 25%, ethanol 60% take by weighing each raw material component, mix mutually, stir evenly, promptly obtain the triphenylamine of the present invention Composite corrosion inhibitor of aniline aldehyde derivatives and amino acids. Wherein, the triphenylamine dialdehyde is newly synthesized triphenylamine dialdehyde, which is synthesized according to the following method: under a nitrogen environment, add 4.9g triphenylamine and 40mL anhydrous dimethylformamide into a round bottom flask, and control the reaction liquid The temperature is 0°C, and 37mL of phosphorus oxychloride is added dropwise, after 2 hours of reaction, the temperature is raised to 95-100°C, and the reaction is carried out at a constant temperature for 48 hours. The crude product was filtered to obtain the final product triphenylamine dialdehyde after silica gel column chromatography, and th...

Embodiment 2

[0037] According to the percentage by weight of triphenylamine dialdehyde 20%, the mixture of alanine and methionine 15%, methyl pentynol 4%, potassium thiocyanate 6% and ethylene glycol 55%, each raw material component is weighed, mix mutually, Stir evenly to obtain the composite corrosion inhibitor of triphenylamine aldehyde derivatives and amino acids of the present invention. Wherein, the triphenylamine dialdehyde is newly synthesized triphenylamine dialdehyde, which is synthesized according to the following method: under a nitrogen environment, add 4.9g triphenylamine and 40mL anhydrous dimethylformamide into a round bottom flask, and control the reaction liquid The temperature is 0°C, and 37mL of phosphorus oxychloride is added dropwise. After 2 hours of reaction, the temperature is raised to 95-100°C. After 48 hours of reaction, the reaction mixture is poured into ice water, and titrated with 3mol / L NaOH to neutrality to obtain After the crude product is filtered, the f...

Embodiment 3

[0045] According to mass percentage, triphenylamine dialdehyde 5%, triphenylamine trialdehyde 5%, cysteine ​​and aspartic acid mixture 10%, 5-methyl-1-hexyn-3-ol 7%, sodium hydrosulfide 30% and 43% industrial-grade methanol weigh each raw material component, mix with each other, and stir evenly to obtain the composite corrosion inhibitor of triphenylamine aldehyde derivatives and amino acid of the present invention. Wherein, the triphenylamine dialdehyde is a newly synthesized triphenylamine dialdehyde, which is prepared according to the following method: under a nitrogen atmosphere, add 4.9 g of triphenylamine and 40 mL of anhydrous dimethylformamide into a round-bottomed flask, and control the reaction liquid The temperature is 0°C, and 37mL of phosphorus oxychloride is added dropwise, after 2 hours of reaction, the temperature is raised to 95-100°C, and the reaction is carried out at a constant temperature for 48 hours. The crude product was filtered to obtain the final pro...

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Abstract

The invention discloses a triphenylamine aldehyde derivative and amino acid compound corrosion inhibitor and a use method thereof. The triphenylamine aldehyde derivative and amino acid compound corrosion inhibitor comprises components including, by weight percent, 2 to 20% of triphenylamine aldehyde derivatives, 3 to 15% of amino acid, 4 to 10% of acetylenic alcohol, 6 to 30% of corrosive pitting inhibitor and 25 to 60% of low mass molecule alcohol. A use method of the compound corrosion inhibitor comprises the steps that the compound corrosion inhibitor with components mixed and prepared according to the proportion is added into an acid solution corrosion medium making contact with metal, 0.005 to 1.0g of compound corrosion inhibitor is added into 1L of the acid solution, and the immersion temperature ranges from 0 DEG C to 80 DEG C. The corrosion inhibitor has the good corrosion inhibiting effect on metal in the acid media, the corrosion inhibiting rate can reach 92%, the beneficial effects of being little in use amount, high in efficiency and the like are achieved, and the corrosion inhibitor can be suitable for acid pickling and corrosion protection of the metal in the petroleum chemical industry.

Description

technical field [0001] The invention belongs to the field of corrosion inhibitors, in particular to a composite corrosion inhibitor of triphenylamine aldehyde derivatives and amino acid for inhibiting metal corrosion and a use method thereof. Background technique [0002] Corrosion is a phenomenon in which chemical, electrochemical or other reactions occur between the surface and interface of a material to cause damage or deterioration of the material itself, resulting in the destruction of metal materials and the failure of equipment functions, resulting in huge economic losses. It is estimated that every 90 seconds around the world, one ton of steel turns to rust. In addition, corrosion will shorten the service life of its equipment, cause accidents, pollute the environment and threaten personal safety. [0003] In order to inhibit metal corrosion, a variety of anti-corrosion methods have been used so far, among which the anti-corrosion method of adding corrosion inhibito...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/10
CPCC23F11/10
Inventor 胡克庄稼邓洋程小伟丁佳婷向艳卢红林马柱
Owner SOUTHWEST PETROLEUM UNIV
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