Neutralization corrosion inhibitor and preparation method and application thereof

Abstract

The invention provides a neutralization corrosion inhibitor and a preparation method and application for the neutralization corrosion inhibitor and belongs to the technical field of chemical engineering. By means of the neutralization corrosion inhibitor and the preparation method and application for the neutralization corrosion inhibitor, the technical problems that existing water-soluble corrosion inhibitors are poor in corrosion inhibition effect and insufficient in protecting effect can be solved. The neutralization corrosion inhibitor comprises the raw material ingredients of, by weight,20-50 parts of an amphoteric imidazoline corrosion inhibitor, 10-30 parts of organic amine, 5-30 parts of cosurfactant and 2-5 parts of adjuvant. The corrosion inhibitor provided by the invention hasgood water solubility, has the advantages of being convenient to use and good in corrosion inhibition performance at the same time, is applied to corrosion prevention of petroleum processing equipment, can well adapt to high-temperature and high-acid working environments and has good protecting effect, and the corrosion inhibitor is simple in production process, low in cost and environmentally friendly and has quite good economic value.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a neutralizing corrosion inhibitor and a preparation method and application thereof. Background technique [0002] Due to the increasingly heavy quality of conventional crude oil, the trend of crude oil inferiority is becoming more and more obvious. In addition, a large amount of acid liquid is injected to enhance oil recovery in the process of oil field exploitation, so that the ratio of acid content, sulfur content, chlorine content and salt content in crude oil is getting higher and higher. As a result, the equipment in the oil processing process, such as atmospheric and vacuum, distillation equipment and pipelines, etc. are seriously corroded, and become an important safety hazard for the long-term operation of the equipment. [0003] In addition to hydrocarbons, crude oil also contains a small amount of organic and inorganic hybrids composed of sulfur, ...

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN2015105819428 discloses "a preparation method of an oil-soluble corrosion inhibitor for suppressing recurrent corrosion at the top of a fractionation tower". It is more complicated and inconvenient to apply; compared with oil-soluble corrosion inhibitors, the post-treatment process of water-soluble corrosion inhibitors is simpler and more suitable for existing processes, but its slow-release effect is poor and cannot provide sufficient protection

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