Preventing sulfur-based corrosion of copper components in fuel systems

Copper and its alloys used in gasoline fuel systems and pumps are subject to corrosion by H2S or other reactive sulfur compounds in the fuel. Although oil refining includes steps such as hydro-desulfurization that convert sulfur into non-reactive compounds, enough H2S or mercaptans can remain in the refined gasoline to cause copper corrosion at the customer level. Process upsets during refining can also prevent complete sulfur removal.

Treatment with chemical inhibitors can prevent corrosion, and GE Water & Process Technologies can help you select and apply the best treatment for your situation. For example, it is important to use chemical inhibitors that render sulfur compounds inert. Commonly used filming agents simply deposit a temporary film on the metal surface that may not provide the protection needed after the fuel is delivered to the user.

GE has decades of experience and unmatched expertise in corrosion inhibitors for fuels. We can identify and apply the most appropriate treatments from our SpecAid product line to ensure that your fuel products meet market and customer specifications.