High temperature corrosion inhibitor
AssigneeBetz Laboratories, Inc.
InventorsJames G. Edmondson, S. Blake Pruett
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Abstract
A process for the inhibition of corrosion caused by naphthenic acid and sulfur compounds during the elevated temperature processing of crude oil by use of a corrosion inhibitor consisting of trialkylphosphate and an alkaline earth metal phosphonate-phenate sulfide.
Claims8
A process for inhibiting the corrosion of the internal metallic surfaces of the equipment used in the processing of crude oil at temperatures between 400.degree. F. and 790.degree. comprising adding to the crude oil a corrosion inhibiting amount of a composition comprising a trialkylphosphate containing an alkyl moiety of C.sub.1 -C.sub.12 and an alkaline earth metal phosphonate-phenate sulfide in which from 20-40 percent of the phenol hydroxy groups have been phosphonated.
Dependencies are inferred from the claim text.