▎ 摘　　要

NOVELTY - Method for removing metal from crude oil involves adding to crude oil, a wash water or an emulsion created by mixing of crude oil with wash water and an effective amount of an additive composition to transfer a metal contaminant from a hydrocarbon phase to an aqueous phase, where the additive composition comprises an active additive selected from nanoparticles and/or functionalized polymers, the nanoparticles are selected from e.g. graphene oxide, titanium dioxide, zinc oxide, magnesium oxide, barium sulfate, polydimethylsiloxane and/or titania-functionalized graphene, and the functionalized silica is functionalized with a functional group selected from e.g. sulfonate, sulfate, hydroxyl, glucoside, ethoxylate, propoxylate, ether, amines and/or amides, and resolving the emulsion into the hydrocarbon phase and the aqueous phase in a refinery desalting process using electrostatic coalescence, where at least a portion of the metal contaminant is transferred to the aqueous phase. USE - Method for removing metal from crude oil. ADVANTAGE - The method is capable of removing problematic iron metal contaminants into a desalter brine, when added to desalter, and can break complex emulsions present in the desalting processes and reduce the levels of problematic metals in the desalted crude. DETAILED DESCRIPTION - Method for removing metal from crude oil involves adding to crude oil, a wash water or an emulsion created by mixing of crude oil with wash water and an effective amount of an additive composition to transfer a metal contaminant from a hydrocarbon phase to an aqueous phase, where the additive composition comprises an active additive selected from nanoparticles and/or functionalized polymers, the nanoparticles are selected from graphene oxide, titanium dioxide, zinc oxide, aluminum nitride, aluminum oxide, functionalized clays, deformable polymer latex, magnesium oxide, barium sulfate, polydimethylsiloxane, functionalized silica, ammonia-functionalized graphene oxide and/or titania-functionalized graphene, and the functionalized silica is functionalized with a functional group selected from sulfonate, sulfate, sulfosuccinate, thiosulfate, succinate, carboxylate, hydroxyl, glucoside, ethoxylate, propoxylate, phosphate, phosphonate, ethoxylate, ether, amines and/or amides, and the functionalized polymers are selected from iodododecane-functionalized vinylpyrrolidone/vinylimidazole copolymers, sulfonated-functionalized vinylpyrrolidone/vinylimidazole copolymers, sulfonated polyether ether ketones, imidazole polymers, imidazole copolymers, 3-(1-pyridino)-1-propanesulfonate, sulfonated vinylimidazole/vinyl pyrrolidone copolymer, sulfonated vinylimidazole polymer, poly(ethylene glycol) diamine, octadecylphosphonic acid, polydimethoxysiloxane and/or deformable polymer latex, and resolving the emulsion into the hydrocarbon phase and the aqueous phase in a refinery desalting process using electrostatic coalescence, where at least a portion of the metal contaminant is transferred to the aqueous phase. An INDEPENDENT CLAIM is included for a treated mixture, which includes a hydrocarbon phase, an aqueous phase, a metal contaminant, and additive composition.