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Inhibiting Nucleation Corrosion in Liquid Hydrocarbons

Product Number: 51324-21232-SG

Author: Moshood Adewale; Hitesh Bagaria; Nimeshkumar Patel; Tatiana Barbosa; Osvaldo Antonio Heredia Cancino

Publication Date: 2024

$40.00

Dewpoint corrosion is a well-known phenomenon in flue gas stacks and refinery overheads, where fine water droplets condense from the vapor upon cooling, and the acid gases in the vapors diffuse into water droplets to form a highly corrosive low pH liquid. We have identified a similar mechanism in hydrocarbon liquids, which we call as “nucleation corrosion” (C2023-19463). Liquid hydrocarbons often have dissolved water (DW), which does not promote corrosion even in the presence of corrosive species (e.g., organic acids, H2S). Upon cooling, the DW nucleates as nanometer-sized water droplets and acids present in the liquid partition into the water droplets decreasing pH to cause aggressive nucleation corrosion. In this study the methods to mitigate nucleation corrosion are investigated with an emphasis on studying the impact of different types of chemical inhibitors on this newly discovered mechanism. An interesting example of the impact of the test method on inhibitor selection is shown. Finally, a case study highlighting nucleation corrosion in a refinery distillation overhead reflux line is presented.

Available for download

Nucleation Corrosion in Liquid Hydrocarbons

Product Number: 51323-19463-SG

Author: Hitesh Bagaria, Moshood Adewale, Nimeshkumar Patel, Jennifer Sargent, Trevor Place

Publication Date: 2023

$20.00

The condensation of acidic species from vapor to liquid occurs when the system is cooled to or below the dew point temperature. Such condensation leads to extremely aggressive corrosion that is referred to as acid dew point corrosion. Some also refer to this corrosion as low temperature corrosion or cold corrosion.

Products tagged with 'liquid hydrocarbon pipelines'

Inhibiting Nucleation Corrosion in Liquid Hydrocarbons

Nucleation Corrosion in Liquid Hydrocarbons

Association for Materials Protection and Performance