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US 12,365,845 B2Granted
Phosphorous-free oil soluble molybdenum complexes as high temperature fouling inhibitors
AssigneeEcolab USA Inc.
InventorsOmer Gul, Oussama Zenasni, Philip Andrew Thornthwaite
Life of this patent
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Abstract
Disclosed are sulfur-containing molybdenum complexes used in compositions and methods for inhibiting or reducing the deposition of foulant on equipment.
Claims16
A method of inhibiting fouling in hydrocarbon processing of a hydrocarbon fluid comprising a foulant, comprising:
- introducing an antifouling composition into the hydrocarbon fluid, wherein the antifouling composition comprises a sulfur-containing molybdenum fouling inhibitor having the general formula II:
- wherein R and R′ in Formula II each represents an alcohol group, alkyl group, alkenyl group, or aryl group;
- and X represents oxygen or sulfur and can be the same or different but where at least one X in the Formula II is sulfur.
A method of passivating a metal surface of process equipment used to process a hydrocarbon fluid in a hydrocarbon process, comprising the steps of:
- passivating the metal surface with a passivating composition, wherein the passivating composition comprises a fouling inhibitor having a structure according to Formula II;
- wherein R and R′ in Formula II each represents an alcohol group, alkyl group, alkenyl group, or aryl group;
- and X represents oxygen or sulfur and can be the same or different but where at least one X in the Formula II is sulfur.
Dependencies are inferred from the claim text.