Preparation method of high aromatic oil

The invention relates to a preparation method of high aromatic oil, which comprises the following steps: (1) pretreating raw oil, and removing colloidal asphaltene in the raw oil to obtain a to-be-treated oil product; (2) carrying out extraction treatment on the oil product to be treated by adopting a polar solvent to respectively obtain second extract oil and second raffinate oil; and (3) carrying out back extraction treatment on the second extract oil by adopting a non-polar solvent to respectively obtain third extract oil and third raffinate oil, and removing the solvent from the third raffinate oil to obtain a high aromatic oil product. The method disclosed by the invention is simple in process, and the obtained aromatic hydrocarbon oil has relatively high aromatic hydrocarbon content. 本发明涉及一种高芳烃油的制备方法，所述制备方法包括：(1)对所述原料油进行预处理，脱除其中的胶质沥青质，得到待处理油品；(2)采用极性溶剂对所述待处理油品进行萃取处理，分别得到第二抽出油和第二抽余油；(3)采用非极性溶剂对所述第二抽出油进行反萃取处理，分别得到第三抽出油和第三抽余油，所述第三抽余油脱除溶剂即为高芳烃油产品。本发明所述方法工艺简单，得到的芳烃油具有较高的芳烃含量。