| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a low-sulfur aromatic hydrocarbon, capable of producing a highly desulfurized aromatic hydrocarbon product from an aromatic hydrocarbon, such as benzene, naphthalene and naphthalene- containing oil, by using a comparatively simple apparatus and method. SOLUTION: This method for producing a low-sulfur aromatic hydrocarbon comprises reacting an aromatic hydrocarbon containing sulfur compounds, such as benzothiophene, as impurities or aromatic hydrocarbon oil containing the above impurities with a formaldehyde compound selected from formaldehyde and a compound capable of forming formaldehyde in the reaction system, such as paraformaldehyde, or with the formaldehyde compound and a phenol compound to be used if necessary, in the presence of an acid catalyst to form an oligomer, then recovering the unreacted aromatic hydrocarbon as the product from the formed reaction mixture by distillation.
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