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11398 Investigation of Elemental Sulfur Corrosion Mechanisms

Picture for 11398 Investigation of Elemental Sulfur Corrosion Mechanisms
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Product Number: 51300-11398-SG
ISBN: 2011 11398 CP
Author: Haitao Fang, Bruce Brown, David Young, Srdjan Nešic
Publication Date: 2011
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Sour gas wells frequently co-produce elemental sulfur which can cause catastrophic corrosion of mild steel. As producing wells become increasingly sour, the incidence of sulfur corrosion will likely increase. Despite the severity of this problem, limited mechanistic information about this process exists in the literature. The objective of this study is investigation of the corrosion mechanism involving elemental sulfur.

Building on the knowledge found in open literature, sulfur hydrolysis and the sulfur/iron reaction mechanisms were both studied in this work. It was found that a sulfur hydrolysis reaction does occur during elemental sulfur corrosion, but does not appear to be dominant. Experimental results confirmed that a sulfur/iron electrochemical reaction is the main mechanism of elemental sulfur corrosion.

Keywords: elemental sulfur corrosion, hydrolysis, electrochemical reaction
Sour gas wells frequently co-produce elemental sulfur which can cause catastrophic corrosion of mild steel. As producing wells become increasingly sour, the incidence of sulfur corrosion will likely increase. Despite the severity of this problem, limited mechanistic information about this process exists in the literature. The objective of this study is investigation of the corrosion mechanism involving elemental sulfur.

Building on the knowledge found in open literature, sulfur hydrolysis and the sulfur/iron reaction mechanisms were both studied in this work. It was found that a sulfur hydrolysis reaction does occur during elemental sulfur corrosion, but does not appear to be dominant. Experimental results confirmed that a sulfur/iron electrochemical reaction is the main mechanism of elemental sulfur corrosion.

Keywords: elemental sulfur corrosion, hydrolysis, electrochemical reaction
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