以硝基苯（ＮＢ）为萃取剂，考察了文题的影响因素，确定了萃取过程的最佳工艺条件：萃取温度１０～６０℃；初始水相的ｐＨ值４．３～５．５。负载有机相中的苯胺可用精馏方法回收，其纯度大于９９．５％。依实验确定的萃取平衡等温线，可得到萃取的理论级数为５级。ＮＢ萃取关键杂质精制对氨基苯酚为一吸热反应，萃取反应的热效应为２．２６ｋＪ／ｍｏｌ。 With nitrobenzene (NB) as the extractant, the influencing factors of the article were investigated, and the optimum technological conditions of the extraction process were determined: the extraction temperature was 10 ~ 60 ℃; the pH value of the initial aqueous phase was 4.3-5.5. The aniline in the loaded organic phase can be recovered by distillation, with a purity of more than 99.5%. According to the experimental determination of the equilibrium extraction isotherm, the theoretical level of extraction can be obtained as 5 levels. NB extraction of key impurities refined p-aminophenol as an endothermic reaction, the thermal response of the extraction reaction was 2.26kJ / mol.