在优化的工艺条件下对宝明页岩油进行溶剂抽提精制,考察溶剂的选择、抽提温度、剂油质量比、沉降时间对页岩油精制效果的影响.结果表明:选用N,N-二甲基甲酰胺为溶剂,在抽提温度为60℃、剂油质量比为0.5、反应时间为10 min、沉降时间为30 min的条件下,抽余油收率为72％,抽出油收率为26％,所得抽余油中不饱和烃、硫、氮、氧含量,残炭明显降低,可作为加氢精制原料,其氢气消耗量比原料直接加氢降低约52.48％,抽出油中小于420℃组分满足4号燃料油标准,大于420℃组分可制备90号重交通道路沥青.%The goal of this research was to develop and optimize solvent extraction techniques for processing Baoming shale oil.The influence of extraction solvent,extraction temperature,solvent/oil mass ratio,and settling time on shale oil refining was investigated and the optimized conditions were determined.The results show that among the tested solvents,N,N-dimethyl formamide (DMF) solvent has the best extraction effect.At the conditions of 60 ℃,solvent/oil mass ratio 0.5,reaction time 10 min and settling time 30 min,the yield of raffinate oil and the extract oil is 72％ and 26％,respectively.The raffinate oil with very low content of olefins,sulfur,nitrogen,oxygen,and the carbon residue can be used as raw oil for hydrotreating process.The hydrogen consumption for the raffinate oil hydrotreating is 52.48％ lower than that for shale oil hydrotreating directly.The light fraction of the extract oil by distillation meets the quality of No.4 fuel oil,and the heavy component of the extract oil can be used for No.90 heavy traffic road asphalt.
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