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Compound imidazoline quaternary ammonium salt corrosion inhibitor and preparation method thereof

A compound imidazoline and imidazoline quaternary ammonium salt technology, which is applied in the field of industrial water treatment and environmental protection, can solve the problems of increased dosage, increased cost, and insignificant corrosion inhibition effect of imidazoline derivatives, so as to reduce the probability of contact , tight adsorption film, good corrosion inhibition effect

Inactive Publication Date: 2019-10-22
甘肃泰升化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, the corrosion inhibition effect of imidazoline derivatives at low concentrations is not obvious. If the corrosion inhibition effect is to be satisfied, the dosage should be increased, resulting in an increase in cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Raw materials include oleic acid, tetraethylenepentamine, quaternizing agent, sodium dodecylbenzene sulfonate, and potassium iodide, and the oleic acid and tetraethylenepentamine react to obtain an imidazoline intermediate, which is then reacted with the quaternizing agent The obtained imidazoline quaternary ammonium salt corrosion inhibitor, the composite imidazoline quaternary ammonium salt corrosion inhibitor is obtained by compounding sodium dodecylbenzenesulfonate and potassium iodide with the imidazoline quaternary ammonium salt corrosion inhibitor, the described The quaternization reagent is selected from benzyl chloride.

[0024] According to the molar ratio of 1.0:1.1, oleic acid and tetraethylenepentamine were stirred and reacted at 140°C for 2h, then heated up to 210°C, and reacted for 6.5h to obtain the imidazoline intermediate; the imidazoline intermediate was cooled to 50°C, followed by The molar ratio of the imidazoline intermediate to benzyl chloride is ...

Embodiment 2

[0026] Raw materials include oleic acid, tetraethylenepentamine, quaternizing agent, sodium dodecylbenzene sulfonate, and potassium iodide, and the oleic acid and tetraethylenepentamine react to obtain an imidazoline intermediate, which is then reacted with the quaternizing agent The obtained imidazoline quaternary ammonium salt corrosion inhibitor, the composite imidazoline quaternary ammonium salt corrosion inhibitor is obtained by compounding sodium dodecylbenzenesulfonate and potassium iodide with the imidazoline quaternary ammonium salt corrosion inhibitor, the described The quaternization reagent is selected from benzyl chloride.

[0027] According to the molar ratio of 1.0:1.2, oleic acid and tetraethylenepentamine were stirred and reacted at 155°C for 2h, then heated up to 220°C, and reacted for 6.5h to obtain the imidazoline intermediate; the imidazoline intermediate was cooled to 60°C, followed by The molar ratio of the imidazoline intermediate to benzyl chloride is ...

Embodiment 3

[0029] Raw materials include oleic acid, tetraethylenepentamine, quaternizing agent, sodium dodecylbenzene sulfonate, and potassium iodide, and the oleic acid and tetraethylenepentamine react to obtain an imidazoline intermediate, which is then reacted with the quaternizing agent The obtained imidazoline quaternary ammonium salt corrosion inhibitor, the composite imidazoline quaternary ammonium salt corrosion inhibitor is obtained by compounding sodium dodecylbenzenesulfonate and potassium iodide with the imidazoline quaternary ammonium salt corrosion inhibitor, the described The quaternization reagent is selected from benzyl chloride.

[0030] According to the molar ratio of 1.0:1.3, oleic acid and tetraethylenepentamine were stirred and reacted at 170°C for 2h, then heated up to 230°C, and reacted for 6.5h to obtain the imidazoline intermediate; the imidazoline intermediate was cooled to 70°C, followed by The molar ratio of the imidazoline intermediate to benzyl chloride is ...

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Abstract

The invention discloses a compound imidazoline quaternary ammonium salt corrosion inhibitor and a preparation method thereof. The raw materials include oleic acid, tetraethylenepentamine, quaternization reagent, sodium dodecyl benzene sulfonate and potassium iodide, the oleic acid reacts with the tetraethylenepentamine to obtain an imidazoline intermediate, and then the imidazoline intermediate reacts with the quaternization reagent to obtain the imidazoline quaternary ammonium salt corrosion inhibitor, and the compound imidazoline quaternary ammonium salt corrosion inhibitor is obtained by compounding the imidazoline quaternary ammonium salt corrosion inhibitor with the sodium dodecyl benzene sulfonate and the potassium iodide. The compound imidazoline quaternary ammonium salt corrosion inhibitor has a good corrosion inhibition effect.

Description

technical field [0001] The invention belongs to the technical field of industrial water treatment and environmental protection, and in particular relates to a composite imidazoline quaternary ammonium salt corrosion inhibitor and a preparation method thereof. Background technique [0002] Corrosion inhibitors commonly used in oil fields include amines, cyclic amines, amides, amide carboxylic acids and their derivatives, imidazoline and its derivatives, etc. Among them, imidazoline derivatives have good corrosion inhibition performance and are the most widely used in oil fields. A broad class of corrosion inhibitors. In practical applications, the corrosion inhibition effect of imidazoline derivatives at low concentrations is not obvious. If the corrosion inhibition effect is to be satisfied, the dosage must be increased, resulting in an increase in cost. Contents of the invention [0003] The object of the present invention is to provide a composite imidazoline quaternary...

Claims

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Application Information

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IPC IPC(8): C23F11/08
CPCC23F11/08
Inventor 马述科
Owner 甘肃泰升化工科技有限公司