CN113718259A - Environment-friendly multiphase neutralization corrosion inhibitor - Google Patents
Environment-friendly multiphase neutralization corrosion inhibitor Download PDFInfo
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- CN113718259A CN113718259A CN202110922779.2A CN202110922779A CN113718259A CN 113718259 A CN113718259 A CN 113718259A CN 202110922779 A CN202110922779 A CN 202110922779A CN 113718259 A CN113718259 A CN 113718259A
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- multiphase
- corrosion inhibitor
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- neutralization corrosion
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
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- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses an environment-friendly multiphase neutralization corrosion inhibitor, which comprises the following components in percentage by mass: 15% -20% of imidazoline derivatives, 10% -13% of thiourea, 5% -8% of benzotriazole, 20% -25% of ethylenediamine, 5% -10% of morpholine, 8% -12% of MDEA, 8% -12% of monoethanolamine, 10% -40% of dimethylamine aqueous solution and 12% -45% of reverse osmosis water. The environment-friendly multiphase neutralization corrosion inhibitor prepared by the invention can neutralize acidic substances in an atmospheric and vacuum distillation device, protect internal parts at the top of a tower from being corroded in a gas phase state, a liquid phase state or a multiphase state, protect poor heat exchange area caused by blocking of a heat exchanger tube bundle, absorb toxic gases generated in the atmospheric and vacuum distillation device, protect the environment, control COD (chemical oxygen demand) of sewage flowing from the top of the tower to be below 1000, control the content of ammonia nitrogen to be below 50 and protect a water source from being polluted.
Description
Technical Field
The invention relates to the technical field of corrosion inhibitors, in particular to an environment-friendly multiphase neutralization corrosion inhibitor.
Background
The oil contains S, N, Cl compound and organic acid, or it is converted into corrosive medium during processing; in the high-temperature part: predominantly the S-H2S-thiol-naphthenic acid system; at the low temperature site: mainly H2S-H2O, H2S-HCl-H2O, H2S-HCN-H2O and H2S-H2 systems, in the petroleum processing process, along with the continuous increase of the processing amount of high-acid and high-sulfur crude oil, the equipment corrosion of the petroleum processing industry becomes more serious day by day, the equipment corrosion problem not only affects whether the equipment can run efficiently, low-consumption, stably and in a long period under full load, but also more importantly, the corrosion inhibitor is needed to be used in the processing process, the existing corrosion inhibitor is closest to the material composition of imidazoline, the efficacy is used for inhibiting corrosion, the material has the defects that only the corrosion can be inhibited in a liquid phase state, and COD and ammonia nitrogen in the sewage flowing down from the tower top are increased, the water pollution is increased, the gaseous hydrogen sulfide toxic gas can not be well absorbed, venting to the atmosphere can also cause serious pollution of the atmosphere.
Disclosure of Invention
The invention aims to provide an environment-friendly multiphase neutralization corrosion inhibitor for solving the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the environment-friendly multiphase neutralization corrosion inhibitor comprises the following components in percentage by mass:
imidazoline derivatives 15% -20%
10 to 13 percent of thiourea
5 to 8 percent of benzotriazole
20 to 25 percent of ethylenediamine
Morpholine 5-10%
MDEA8％-12％
8% -12% of monoethanolamine
10 to 40 percent of dimethylamine aqueous solution
12 to 45 percent of reverse osmosis water.
Preferably, the optimal mass component group of the heterogeneous neutralization corrosion inhibitor is as follows:
imidazoline derivative 15%
10 percent of thiourea
Benzotriazole 5%
Ethylene diamine 20%
Morpholine 5%
MDEA8％
Monoethanolamine 10%
Dimethylamine aqueous solution 12%
Reverse osmosis water 15%.
Preferably, the imidazoline derivative is a water-soluble imidazoline compound, and the morpholine is used as a solvent.
Preferably, the ethylenediamine is used as a neutralizing agent.
The preparation method of the environment-friendly multiphase neutralization corrosion inhibitor comprises the steps of firstly, putting reverse osmosis water, dimethylamine aqueous solution and ethylenediamine into a stirrer to be uniformly stirred, then adding thiourea, benzotriazole, morpholine, MDEA and monoethanolamine into the stirrer to be uniformly stirred; finally, the imidazoline derivative is put into a stirrer to be uniformly stirred, and the multiphase neutralization corrosion inhibitor can be obtained.
Compared with the prior art, the invention has the following beneficial effects:
the environment-friendly multiphase neutralization corrosion inhibitor prepared by the invention can neutralize acidic substances in an atmospheric and vacuum distillation device, protect internal parts at the top of a tower from being corroded in a gas phase state, a liquid phase state or a multiphase state, protect poor heat exchange area caused by blocking of a heat exchanger tube bundle, absorb toxic gases generated in the atmospheric and vacuum distillation device, protect the environment, control COD (chemical oxygen demand) of sewage flowing from the top of the tower to be below 1000, control the content of ammonia nitrogen to be below 50 and protect a water source from being polluted.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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:
the environment-friendly multiphase neutralization corrosion inhibitor comprises the following components in percentage by mass:
imidazoline derivatives 15% -20%
10 to 13 percent of thiourea
5 to 8 percent of benzotriazole
20 to 25 percent of ethylenediamine
Morpholine 5-10%
MDEA8％-12％
8% -12% of monoethanolamine
10 to 40 percent of dimethylamine aqueous solution
12 to 45 percent of reverse osmosis water.
The first embodiment is as follows:
the preparation method of the environment-friendly multiphase neutralization corrosion inhibitor comprises the steps of firstly, putting reverse osmosis water, dimethylamine aqueous solution and ethylenediamine into a stirrer to be uniformly stirred, then adding thiourea, benzotriazole, morpholine, MDEA and monoethanolamine into the stirrer to be uniformly stirred; finally, the imidazoline derivative is put into a stirrer to be uniformly stirred, and the multiphase neutralization corrosion inhibitor can be obtained.
Example two:
in the first embodiment, the following steps are added:
the optimal mass components of the multiphase neutralization corrosion inhibitor are as follows:
imidazoline derivative 15%
10 percent of thiourea
Benzotriazole 5%
Ethylene diamine 20%
Morpholine 5%
MDEA8％
Monoethanolamine 10%
Dimethylamine aqueous solution 12%
Reverse osmosis water 15%.
The preparation method of the environment-friendly multiphase neutralization corrosion inhibitor comprises the steps of firstly, putting reverse osmosis water, dimethylamine aqueous solution and ethylenediamine into a stirrer to be uniformly stirred, then adding thiourea, benzotriazole, morpholine, MDEA and monoethanolamine into the stirrer to be uniformly stirred; finally, the imidazoline derivative is put into a stirrer to be uniformly stirred, and the multiphase neutralization corrosion inhibitor can be obtained.
Example three:
in the second embodiment, the following steps are added:
the imidazoline derivative is a water-soluble imidazoline compound, and the morpholine is used as a solvent.
The preparation method of the environment-friendly multiphase neutralization corrosion inhibitor comprises the steps of firstly, putting reverse osmosis water, dimethylamine aqueous solution and ethylenediamine into a stirrer to be uniformly stirred, then adding thiourea, benzotriazole, morpholine, MDEA and monoethanolamine into the stirrer to be uniformly stirred; finally, the imidazoline derivative is put into a stirrer to be uniformly stirred, and the multiphase neutralization corrosion inhibitor can be obtained.
Example four:
in the third embodiment, the following steps are added:
the ethylene diamine is used as a neutralizer.
The preparation method of the environment-friendly multiphase neutralization corrosion inhibitor comprises the steps of firstly, putting reverse osmosis water, dimethylamine aqueous solution and ethylenediamine into a stirrer to be uniformly stirred, then adding thiourea, benzotriazole, morpholine, MDEA and monoethanolamine into the stirrer to be uniformly stirred; finally, the imidazoline derivative is put into a stirrer to be uniformly stirred, and the multiphase neutralization corrosion inhibitor can be obtained.
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 (5)
1. The environment-friendly multiphase neutralization corrosion inhibitor is characterized in that: the composition comprises the following components in percentage by mass:
imidazoline derivatives 15% -20%
10 to 13 percent of thiourea
5 to 8 percent of benzotriazole
20 to 25 percent of ethylenediamine
Morpholine 5-10%
MDEA8％-12％
8% -12% of monoethanolamine
10 to 40 percent of dimethylamine aqueous solution
12 to 45 percent of reverse osmosis water.
2. The environmentally friendly multiphase neutralization corrosion inhibitor according to claim 1, wherein: the optimal mass components of the multiphase neutralization corrosion inhibitor are as follows:
imidazoline derivative 15%
10 percent of thiourea
Benzotriazole 5%
Ethylene diamine 20%
Morpholine 5%
MDEA8％
Monoethanolamine 10%
Dimethylamine aqueous solution 12%
Reverse osmosis water 15%.
3. The environmentally friendly multiphase neutralization corrosion inhibitor according to claim 1, wherein: the imidazoline derivative is a water-soluble imidazoline compound, and the morpholine is used as a solvent.
4. The environmentally friendly multiphase neutralization corrosion inhibitor according to claim 1, wherein: the ethylene diamine is used as a neutralizer.
5. The preparation method of the environment-friendly multiphase neutralization corrosion inhibitor is characterized by comprising the following steps: firstly, putting reverse osmosis water, dimethylamine aqueous solution and ethylenediamine into a stirrer to be uniformly stirred, then adding thiourea, benzotriazole, morpholine, MDEA and monoethanolamine into the stirrer to be uniformly stirred; finally, the imidazoline derivative is put into a stirrer to be uniformly stirred, and the multiphase neutralization corrosion inhibitor can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110922779.2A CN113718259A (en) | 2021-08-12 | 2021-08-12 | Environment-friendly multiphase neutralization corrosion inhibitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110922779.2A CN113718259A (en) | 2021-08-12 | 2021-08-12 | Environment-friendly multiphase neutralization corrosion inhibitor |
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| Publication Number | Publication Date |
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| CN113718259A true CN113718259A (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110922779.2A Withdrawn CN113718259A (en) | 2021-08-12 | 2021-08-12 | Environment-friendly multiphase neutralization corrosion inhibitor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622205A (en) * | 2022-03-22 | 2022-06-14 | 河北永创化工科技有限公司 | Neutralization corrosion inhibitor for refinery and preparation method thereof |
| CN117051398A (en) * | 2023-08-21 | 2023-11-14 | 河北大沧石化科技有限公司 | Environment-friendly gas-liquid two-phase corrosion inhibitor |
-
2021
- 2021-08-12 CN CN202110922779.2A patent/CN113718259A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622205A (en) * | 2022-03-22 | 2022-06-14 | 河北永创化工科技有限公司 | Neutralization corrosion inhibitor for refinery and preparation method thereof |
| CN117051398A (en) * | 2023-08-21 | 2023-11-14 | 河北大沧石化科技有限公司 | Environment-friendly gas-liquid two-phase corrosion inhibitor |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211130 |
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| WW01 | Invention patent application withdrawn after publication |