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US 6,583,091 B2Granted
Method for inhibiting corrosion using 4-sulfophthalic acid
AssigneeExxonMobil Research and Engineering Company
InventorsGuido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh, Andreas Vogel
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Abstract
The present invention relates to a method for inhibiting high temperature corrosion of corrosion prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of 4-sulfophthalic acid, typically up to 1000 wppm, to the metal surface.
Claims4
A process for inhibiting the corrosivity at high temperatures of from 200° C. to 420° C. of an organic acid-containing petroleum stream comprising:
- providing a corrosion-prone, metal-containing surface to be exposed to an organic acid-containing stream with an effective, corrosion-inhibiting amount of 4-sulfophthalic acid contained within said petroleum stream.
Dependencies are inferred from the claim text.