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Corrosion inhibitor for high-temperature equipment and preparing method of corrosion inhibitor

A technology for high-temperature equipment and corrosion inhibitors, applied in the field of corrosion inhibitors for high-temperature equipment and its preparation, can solve the problems of severe corrosion of high-temperature equipment and ineffective corrosion inhibition effects, and achieve corrosion inhibition, activation energy, and good corrosion inhibition performance effect

Inactive Publication Date: 2018-06-22
HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the existing types of corrosion inhibitors are used to spray and coat the surface of high-temperature equipment, the corrosion inhibition effect is not obvious, and the corrosion of high-temperature equipment is becoming more and more serious.

Method used

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  • Corrosion inhibitor for high-temperature equipment and preparing method of corrosion inhibitor

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Effect test

Embodiment 1

[0028] A corrosion inhibitor for high temperature equipment, comprising the following raw materials by weight:

[0029] 40 parts of organic amines, 30 parts of imidazolines, 20 parts of phosphates, 15 parts of metal hydroxides, 20 parts of phosphate esters and 0.8 parts of surfactants;

[0030] Organic amines react with phosphates to form organic phosphates, and organic phosphates react with metal oxides to form oxoamine phosphates;

[0031] The metal oxide is magnesium hydroxide.

[0032] The organic amine is composed of dicyclohexylamine and ethanolamine in a mass ratio of 1:1.

[0033] Ethanolamine is composed of diethanolamine and triethanolamine in a mass ratio of 2:1.

[0034] The surfactant is composed of alkylbenzene sulfonate and amino acid according to 3:2.

[0035] The imidazoline is composed of imidazoline sunbadate and imidazoline oleate according to the mass ratio of 1.5:1, and the phosphoric acid ester is phosphoric acid diester.

[0036] The present embodim...

Embodiment 2

[0043] A corrosion inhibitor for high temperature equipment, comprising the following raw materials by weight:

[0044] 60 parts of organic amines, 10 parts of imidazolines, 35 parts of phosphoric acid, 25 parts of metal hydroxides, 20 parts of phosphate esters and 5 parts of surfactants;

[0045] Organic amines react with phosphoric acid to form organic phosphates, and organic phosphates react with metal oxides to form oxoamino phosphates;

[0046] The metal oxide is composed of molybdenum hydroxide and zinc hydroxide in a mass ratio of 1:1.

[0047] The organic amine is composed of hexamethylenetetramine and pentamethylenetetramine in a mass ratio of 2:1.

[0048] The surfactant is composed of nonylphenol and octylphenol in a mass ratio of 2:3.

[0049] The imidazolines are imidazoline sebate, and the phosphoric acid esters are phosphoric acid monoesters.

[0050] The present embodiment also discloses a preparation method of a corrosion inhibitor for high temperature equi...

Embodiment 3

[0057] A corrosion inhibitor for high temperature equipment, comprising the following raw materials by weight:

[0058] 55 parts of organic amines, 18 parts of imidazolines, 25 parts of phosphoric acid, 22 parts of metal hydroxides, 19 parts of phosphate esters and 2.6 parts of surfactants;

[0059] Organic amines react with phosphoric acid to form organic phosphates, and organic phosphates react with metal hydroxides to form oxoamino phosphates;

[0060] Metal hydroxide ferric hydroxide and zinc hydroxide are composed of 1:1 mass ratio.

[0061] The organic amine is composed of ethanolamine, aromatic amine and melamine according to the mass ratio of 1:3:1.

[0062] Ethanolamine is monoethanolamine.

[0063] The surfactant is soap.

[0064] The imidazolines are imidazoline sebate, and the phosphoric acid esters are phosphoric acid monoesters.

[0065] The present embodiment also discloses a preparation method of a corrosion inhibitor for high temperature equipment, compris...

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Abstract

The invention discloses a corrosion inhibitor for high-temperature equipment and a preparing method of the corrosion inhibitor, and relates to the technical field of corrosion inhibitors. The corrosion inhibitor comprises following raw materials including, by weight, 40-60 parts of organic amine, 10-30 parts of imidazolines, 20-35 parts of phosphoric acid or phosphate, 15-25 parts of metal hydroxide, 10-20 parts of phosphate ester and 0.8-5 parts of a surface active agent. The preparing method comprises the first step of organic acid salt preparing, the second step of oxygen amino phosphate preparing and the third step of high-temperature equipment corrosion inhibitor preparing. The high-temperature equipment corrosion inhibitor meets the requirements for high temperature resistance and efficient corrosion inhibition, the production and usage processes are safe and reliable, irritant peculiar smells are avoided, and the corrosion inhibitor is environment-friendly.

Description

technical field [0001] The invention relates to the technical field of corrosion inhibitors, in particular to a corrosion inhibitor for high temperature equipment and a preparation method thereof. Background technique [0002] Corrosion inhibitor is a substance that can prevent or slow down the corrosion of metal surface in environmental medium at low concentration. With appropriate corrosion inhibitor and protection process, good protection effect can be achieved, and the protection efficiency can reach 99%-100% . Not only can the uniform corrosion of metals be protected by corrosion inhibitors, but also corrosion inhibitors can be used to protect stress corrosion, pitting corrosion, crevice corrosion, intergranular corrosion and corrosion fatigue. Corrosion inhibitors can not only effectively slow down the corrosion of metals, Sometimes it also protects the mechanical strength of the metal. The protection technology of corrosion inhibitors has developed into an important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/00
CPCC23F11/00
Inventor 王虎
Owner HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD
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