| 摘要 |
A process is disclosed for removing metals contaminants, particularly iron, and more particularly non-porphyrin, organically-bound iron compounds, from hydrocarbonaceous feedstock, particularly crude petroleum or residua. The process comprises mixing the feedstock with an aqueous solution of hydroxo-carboxylic acids or salts thereof, preferably citric acid, and separating the aqueous solution and metals from the demetalated feedstock.
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