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采用有机溶剂抽提法脱除柴油中的环烷酸，并运用表现分配比概念，考察了环烷酸这种混合物在95％乙醇和柴油中的表观分配比，环烷酸在95％乙醇和柴油两相间的表观分配比为2.0±0．2这是一个较恒定的数值。以此数值对抽提结果进行推测，其推测值与实验测定值吻合得很好．对抽提所应采用的工艺条件进行了室内研究，结果表明，95％乙醇为抽提环烷酸的优良溶剂，经抽提可脱除柴油中80％以上的环烷酸，精制后的柴油的酸值合格，安定性有明显提高．溶剂可回收利用，不污染环境．
The naphthenic acid in diesel oil was extracted by organic solvent extraction and the apparent distribution ratio of naphthenic acid mixture in 95% ethanol and diesel oil was investigated by the concept of performance ratio. The ratio of naphthenic acid in 95% ethanol Apparent distribution ratio between diesel and two phases is 2.0 ± 0.2 This is a relatively constant value. The value of the extraction results were inferred, and its speculation and experimental values ?? in good agreement. The internal conditions of the extraction process should be studied. The results showed that 95% ethanol is an excellent solvent for extracting naphthenic acid. After extraction, more than 80% naphthenic acid can be removed from the diesel oil. The refined diesel oil The acid value of pass, stability has improved significantly. Solvent can be recycled, do not pollute the environment.