High-temperature corrosion inhibitor used in oil field exploitation and petroleum refining process and preparation method thereof

Abstract

The invention belongs to the technical field of petrochemical equipment and particularly provides a high-temperature corrosion inhibitor for oilfield exploitation and a petroleum refining process. The high-temperature corrosion inhibitor is prepared from raw materials in parts by weight as follows: a raw material group A: 6-8 parts of ricinolic acid and 2-4 parts of stearic acid; a raw material group B: N-methyldiethanolamine, triethanolamine and industrial white oil, wherein the weight of N-methyldiethanolamine is 0.18-0.2 times that of the raw material group A, the weight of triethanolamine is 0.06-0.08 times that of the raw material group A, and the weight of the industrial white oil is 0.35-0.4 times that of the raw material group A. The high-temperature corrosion inhibitor has the corrosion inhibition rate of about 97% and has the advantages of being good in corrosion inhibiting effect, non-irritant, safe, reliable, safe and stable in the production use operation process, environment-friendly and the like. According to the preparation method, performance of the raw materials is comprehensively considered, and the high-temperature corrosion inhibitor with more stable performance and more excellent corrosion inhibition effects can be obtained.

Description

technical field

[0001] The invention belongs to the technical field of petrochemical equipment, and in particular relates to a high-temperature corrosion inhibitor used in oilfield exploitation and petroleum refining processes and a preparation method thereof. Background technique

[0002] In the petrochemical production process, a variety of machinery and equipment are often used. Corrosion protection of machinery and equipment is an important task, which is related to the service life of the equipment and safe production. Especially for heating furnace tubes, pipelines, distillation tower trays and side lines, tower bottom pipelines and other parts where the temperature exceeds 270 ° C, as well as high-temperature parts in oil drilling, more corrosion protection is required. The corrosion of the above parts is mainly caused by the corrosion of petroleum acid to the parts under high temperature conditions, and the most important one is the corrosion of naphthenic acid. Mo...

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