A method of removing aromatic halide compound contamination from oil

摘要

In a method of removing an aromatic halide from oil containing the aromatic halide, the aromatic halide compound being extracted from the oil containing the aromatic halide compound safely and highly efficiently, by extraction using an extracting solvent containing 1,3-dialkyl-2-imidazolidinone which is sulfur free and has extremely high extraction separation ability, or by using an extraction solvent containing an aqueous solution of 1,3-dialkyl-2-imidazolidinune. A system of removing aromatic halide compound from oil containing the aromatic halide compound includes a first supply source of a first extracting solvent containing 1,3-dialkyl-2-imidazolidinone; a second supply source of the oil containing the aromatic halide compound; and a first extractor which extracts the aromatic halide compound from the oil containing the aromatic halide compound supplied from the second supply source, by the first extracting solvent supplied from the first supply source.