Commonly used corrosion inhibitors and their effects
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Among the common methods used for corrosion control in chemical industry pipelines are corrosion inhibitors; what are the common types of corrosion inhibitors and what is their effectiveness?
Corrosion inhibitors whose main components are zinc salts, organic phosphates, polyphosphates, etc.; they belong to the category of pre-coating corrosion inhibitors and are used in cooling water systems where they complex with multivalent metal ions to form a protective film. There are also neutralizing and corrosion-inhibiting agents used in acidic environments; their main component is organic amines. The organic amine salts formed after neutralization do not crystallize and deposit, thereby effectively suppressing dew point corrosion.