High temperature naphthenic acid corrosion of steel in high TAN refining media

High temperature naphthenic acid corrosion of steel in high TAN refining media Purpose – This paper aims to study the corrosion behavior of carbon steel and stainless steel in white oil with naphthenic acid under high temperature. Design/methodology/approach – The weight‐loss method and surface analysis were used to study the corrosion behavior of steel in white oil with naphthenic acid. Findings – Naphthenic acids corrosion rates were directly related to experimental temperature, immersion time and total acid number (TAN). The activation energy was calculated and the process kinetics could be represented by Arrhenius‐type equation. The relationship between the isothermal line in liquid phase and that in vapor phase at different TAN values had a significant distinction with the change of temperature. Originality/value – The findings have important implications for assessing the corrosivity of crude oils with high TAN value from various resources. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

High temperature naphthenic acid corrosion of steel in high TAN refining media

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Publisher
Emerald Publishing
Copyright
Copyright © 2008 Emerald Group Publishing Limited. All rights reserved.
ISSN
0003-5599
DOI
10.1108/00035590810903845
Publisher site
See Article on Publisher Site

Abstract

Purpose – This paper aims to study the corrosion behavior of carbon steel and stainless steel in white oil with naphthenic acid under high temperature. Design/methodology/approach – The weight‐loss method and surface analysis were used to study the corrosion behavior of steel in white oil with naphthenic acid. Findings – Naphthenic acids corrosion rates were directly related to experimental temperature, immersion time and total acid number (TAN). The activation energy was calculated and the process kinetics could be represented by Arrhenius‐type equation. The relationship between the isothermal line in liquid phase and that in vapor phase at different TAN values had a significant distinction with the change of temperature. Originality/value – The findings have important implications for assessing the corrosivity of crude oils with high TAN value from various resources.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: Sep 12, 2008

Keywords: Corrosion; Stainless steel; Oils; Acids

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