CN111575714A

CN111575714A - Neutralization corrosion inhibitor

Info

Publication number: CN111575714A
Application number: CN202010519885.1A
Authority: CN
Inventors: 谭炳坤
Original assignee: Hunan Haorun Technology Co ltd
Current assignee: Hunan Haorun Technology Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2020-08-25

Abstract

The invention discloses a neutralization corrosion inhibitor, which comprises the following components: 1-4% of a dispersing agent, 15-20% of a neutralizing organic amine, 2-8% of an imidazoline compound, 1-3% of an alkynol compound, 2-10% of a nitrogen-containing adsorption type corrosion inhibitor, 1-8% of a synergist, 6-8% of a phenolic resin, 3-4% of a superfine high-activity zinc solution, 2-3% of composite ceramic nano tungsten oxide, 1-2% of titanium dioxide and 30-66% of a solvent. The neutralization corrosion inhibitor is suitable for corrosion prevention of devices such as atmospheric and vacuum distillation, catalytic cracking, delayed coking and the like in petrochemical industry, is suitable for processing various sulfur-containing crude oils, prevents the corrosion of condensation and cooling systems at the top of a tower, and has neutralization H⁺When the normal pressure and reduced pressure device is used, the ammonia injection or non-ammonia injection can be adjusted according to the actual injection amount, and the dual effects of neutralization and corrosion inhibition are achieved.

Description

Neutralization corrosion inhibitor

Technical Field

The invention relates to the technical field of preparation of a neutralization corrosion inhibitor, in particular to a neutralization corrosion inhibitor.

Background

The neutralization corrosion inhibitor is a special neutralization product developed by adopting an action mechanism of taking corrosion inhibition as a main part and taking neutralization as an auxiliary part aiming at the characteristic of higher content of hydrogen sulfide in a corrosion medium of a hydrofining device. The product has the functions of corrosion inhibition and neutralization and corrosion prevention.

The existing neutralization corrosion inhibitor has poor corrosion inhibition effect, so a neutralization corrosion inhibitor is provided.

Disclosure of Invention

The present invention is directed to a neutralization corrosion inhibitor to solve the problems set forth above in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a neutralization corrosion inhibitor comprises the following components: 1-4% of a dispersing agent, 15-20% of a neutralizing organic amine, 2-8% of an imidazoline compound, 1-3% of an alkynol compound, 2-10% of a nitrogen-containing adsorption type corrosion inhibitor, 1-8% of a synergist, 6-8% of a phenolic resin, 3-4% of a superfine high-activity zinc solution, 2-3% of composite ceramic nano tungsten oxide, 1-2% of titanium dioxide and 30-66% of a solvent.

Preferably, the dispersant is polyisobutylene succinimide.

Preferably, the neutralizing organic amine is ethylenediamine.

Preferably, the imidazoline compound is naphthenic acid imidazoline and benzimidazole mercaptan.

Preferably, the alkynol compound is propargyl alcohol.

Preferably, the nitrogen-containing adsorption type corrosion inhibitor is benzotriazole.

Preferably, the synergist consists of a thiophosphate and a mannich base.

Preferably, the solvent is water.

Preferably, the superfine high-activity zinc solution is prepared by adding water into superfine high-activity zinc powder as a solvent.

Compared with the prior art, the invention has the beneficial effects that: the neutralization corrosion inhibitor is suitable for corrosion prevention of devices such as atmospheric and vacuum distillation, catalytic cracking, delayed coking and the like in petrochemical industry, is suitable for processing various sulfur-containing crude oils, prevents the corrosion of condensation and cooling systems at the top of a tower, and has neutralization H⁺When the atmospheric and vacuum distillation device is used, the ammonia injection or non-ammonia injection can be adjusted according to the actual injection amount, so that the dual effects of neutralization and corrosion inhibition are achieved, and the corrosion of equipment at the dew point part of the device is inhibited.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that: a neutralization corrosion inhibitor comprises the following components: 1-4% of a dispersing agent, 15-20% of a neutralizing organic amine, 2-8% of an imidazoline compound, 1-3% of an alkynol compound, 2-10% of a nitrogen-containing adsorption type corrosion inhibitor, 1-8% of a synergist, 6-8% of a phenolic resin, 3-4% of a superfine high-activity zinc solution, 2-3% of composite ceramic nano tungsten oxide, 1-2% of titanium dioxide and 30-66% of a solvent, wherein the dispersing agent is polyisobutylene succinimide, the neutralizing organic amine is ethylenediamine, the imidazoline compound is naphthenic acid imidazoline and benzimidazole thiol, the alkynol compound is propyne, the nitrogen-containing adsorption type corrosion inhibitor is benzotriazole, the synergist is composed of thiophosphate and Mannich base, the solvent is water, and the superfine high-activity zinc solution is a superfine solution prepared by adding water into high-activity zinc powder as the solvent;

the preparation process of the neutralization corrosion inhibitor comprises the following steps: uniformly stirring water, polyisobutylene succinimide and ethylenediamine, cooling to about 25 ℃, adding benzotriazole, stirring to fully dissolve, finally adding naphthenic acid imidazoline, benzimidazole mercaptan, propiolic alcohol, thiophosphate, Mannich base, phenolic resin, a superfine high-activity zinc solution, composite ceramic nano tungsten oxide and titanium dioxide, and stirring for 50 minutes to obtain the neutralization corrosion inhibitor.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A neutralization corrosion inhibitor is characterized by comprising the following components: 1-4% of a dispersing agent, 15-20% of a neutralizing organic amine, 2-8% of an imidazoline compound, 1-3% of an alkynol compound, 2-10% of a nitrogen-containing adsorption type corrosion inhibitor, 1-8% of a synergist, 6-8% of a phenolic resin, 3-4% of a superfine high-activity zinc solution, 2-3% of composite ceramic nano tungsten oxide, 1-2% of titanium dioxide and 30-66% of a solvent.

2. A neutralisation corrosion inhibitor according to claim 1, characterised in that: the dispersant is polyisobutylene succinimide.

3. A neutralisation corrosion inhibitor according to claim 1, characterised in that: the neutralizing organic amine is ethylenediamine.

4. A neutralisation corrosion inhibitor according to claim 1, characterised in that: the imidazoline compound is naphthenic acid imidazoline and benzimidazole mercaptan.

5. A neutralisation corrosion inhibitor according to claim 1, characterised in that: the alkynol compound is propargyl alcohol.

6. A neutralisation corrosion inhibitor according to claim 1, characterised in that: the nitrogen-containing adsorption type corrosion inhibitor is benzotriazole.

7. A neutralisation corrosion inhibitor according to claim 1, characterised in that: the synergist consists of thiophosphate and Mannich base.

8. A neutralisation corrosion inhibitor according to claim 1, characterised in that: the solvent is water.

9. A neutralisation corrosion inhibitor according to claim 1, characterised in that: the superfine high-activity zinc solution is prepared by adding water into superfine high-activity zinc powder as a solvent.