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Seawater desalination corrosion inhibitor and preparation method and application thereof

A technology of corrosion inhibitor and n-butanol, which is applied in the field of seawater desalination corrosion inhibitor and its preparation, can solve the problems of Louis corrosion of carbon steel pipes, increase processing costs, and affect processing efficiency, so as to reduce corrosion speed, increase service life, The effect of simple preparation process

Inactive Publication Date: 2018-12-18
王亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the strong corrosion of seawater, various carbon steel pipes are easy to corrode during seawater desalination treatment, which not only affects the treatment efficiency, but also increases the treatment cost
The existing corrosion inhibitors have poor corrosion inhibition performance in seawater and need to be used in large quantities, which not only increases the treatment cost, but also easily pollutes the water body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A seawater desalination corrosion inhibitor, comprising the following raw materials in parts by weight: 20 parts of n-butanol, 12 parts of 1-(2-chlorophenyl)-3-methyl-5-pyrazolone, 1-(4 -10 parts of trifluoromethylbenzene) imidazoline-2-thione, 4 parts of sodium tripolyphosphate, 4.6 parts of tartaric acid, and 2 parts of isoamyl iodide.

[0021] A preparation method for seawater desalination corrosion inhibitor, comprising the following steps:

[0022] (1) Add 1-(2-chlorophenyl)-3-methyl-5-pyrazolone and 1-(4-trifluoromethylbenzene) imidazoline-2-thione into the stirring and heating kettle, Under the protection of nitrogen, heat to 195°C under the stirring condition of 400rpm, add 1 / 2 tartaric acid after stirring for 2 hours, continue stirring for 20 minutes, and cool it for later use;

[0023] (2) Add sodium tripolyphosphate into deionized water twice its weight, add the remaining tartaric acid, stir at 200 rpm and 40°C until completely dissolved, then add isoamyl io...

Embodiment 2

[0026] A seawater desalination corrosion inhibitor, comprising the following raw materials in parts by weight: 25 parts of n-butanol, 13 parts of 1-(2-chlorophenyl)-3-methyl-5-pyrazolone, 1-(4 - 11 parts of trifluoromethylbenzene) imidazoline-2-thione, 5 parts of sodium tripolyphosphate, 5 parts of tartaric acid, and 3 parts of isopentyl iodide.

[0027] A preparation method for seawater desalination corrosion inhibitor, comprising the following steps:

[0028] (1) Add 1-(2-chlorophenyl)-3-methyl-5-pyrazolone and 1-(4-trifluoromethylbenzene) imidazoline-2-thione into the stirring and heating kettle, Under the protection of nitrogen, heat to 198°C with 450rpm stirring condition, keep stirring for 2.5h, add 1 / 2 tartaric acid, continue to keep warm and stir for 25min, and cool down for later use;

[0029] (2) Add sodium tripolyphosphate into deionized water 2.5 times its weight, add the remaining tartaric acid, stir at 220rpm and 45°C until completely dissolved, then add isoamyl...

Embodiment 3

[0032] A seawater desalination corrosion inhibitor, comprising the following raw materials in parts by weight: 30 parts of n-butanol, 14 parts of 1-(2-chlorophenyl)-3-methyl-5-pyrazolone, 1-(4 -12 parts of trifluoromethylbenzene) imidazoline-2-thione, 6 parts of sodium tripolyphosphate, 5.5 parts of tartaric acid, and 4 parts of isoamyl iodide.

[0033] A preparation method for seawater desalination corrosion inhibitor, comprising the following steps:

[0034] (1) Add 1-(2-chlorophenyl)-3-methyl-5-pyrazolone and 1-(4-trifluoromethylbenzene) imidazoline-2-thione into the stirring and heating kettle, Under the protection of nitrogen, heat to 200°C under the stirring condition of 500rpm, add 1 / 2 tartaric acid after stirring for 3 hours, continue stirring for 30 minutes, and cool it for later use;

[0035] (2) Add sodium tripolyphosphate into deionized water three times its weight, add the remaining tartaric acid, stir at 250rpm and 50°C until completely dissolved, then add isoam...

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PUM

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Abstract

The invention discloses a seawater desalination corrosion inhibitor and a preparation method and application thereof. The seawater desalination corrosion inhibitor comprises the following raw materials including, by weight, 20-40 parts of n-butanol, 12-16 parts of 1-(2-chlorophenyl)-3-methyl-5-pyrazolone, 10-14 parts of 1-(4-benzenyl trifluoride) imidazoline-2-thione, 4-8 parts of sodium tripolyphosphate, 4.6-6.4 parts of tartaric acid and 2-6 parts of isoamyl iodide. According to the seawater desalination corrosion inhibitor, the n-butanol, the 1-(2-chlorophenyl)-3-methyl-5-pyrazolone, the 1-(4-benzenyl trifluoride) imidazoline-2-thione, the sodium tripolyphosphate, the tartaric acid and the isoamyl iodide are used as raw materials and is prepared according to the above method, the corrosion inhibition of the prepared corrosion inhibitor is greatly improved, the corrosion rate of the pipeline during the seawater desalination process is reduced, the service life of the equipment is prolonged, the using amount of the corrosion inhibitor is reduced, and pollution to a water body is reduced. The seawater desalination corrosion inhibitor, the preparation method and application are simple in preparation process, convenient to operate and high in production efficiency and easily achieve industrialization. production.

Description

technical field [0001] The invention relates to a seawater desalination agent, in particular to a seawater desalination corrosion inhibitor and a preparation method thereof. Background technique [0002] Water conservancy projects are projects built to control and allocate natural surface water and groundwater to achieve the purpose of eliminating harm and rejuvenating profits. The purpose of water conservancy project planning is to comprehensively consider and rationally arrange the control, development and use of surface and groundwater resources, so as to maximize safety, economy and efficiency. Due to the gradual reduction of fresh water resources, seawater desalination technology has gradually received attention and application, and various chemicals are required to be used in the treatment of seawater and freshwater, including corrosion inhibitors, defoamers, bactericides and algaecides. [0003] Due to the strong corrosion of seawater, various carbon steel pipes are ...

Claims

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Application Information

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IPC IPC(8): C23F11/10
CPCC23F11/10
Inventor 王亮张英杰刘永臣
Owner 王亮
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