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US 2007/0163922 A1Published application
Use of organic polysulfides against corrosion by acid crudes
OwnerFrancis Humblotinventor
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Abstract
Method of combating the corrosion caused by naphthenic acids to the metal walls of a refining unit, comprising the use of a polysulphide having an alkyl radical containing between 2 and 5 carbon atoms.
Claims11
Method of combating the corrosion caused by naphthenic acids to the metal walls of a refining unit, characterized in that it comprises the addition to the hydrocarbon stream for processing by the unit of an effective amount of one or more hydrocarbon compounds of formula
- in which
- n is an integer between 2 and 15 and
- the symbols R1 and R2, which are identical or different, are selected from a linear or branched alkyl radical containing between 2 and 5 carbon atoms, or a cycloalkyl radical containing between 3 and 5 carbon atoms, it being possible for these radicals to contain, optionally, one or more heteroatoms such as oxygen or sulphur.
Dependencies are inferred from the claim text.