Method for efficiently recovering aniline tar

The invention relates to a method for efficiently recovering aniline tar, aniline and a catalyst in tar are recovered by azeotropic distillation and filtration, and the specific operation is as follows: adding a certain amount of aniline tar and an azeotropic solvent into a distillation flask, condensing the distilled gas-phase component, separating out a water phase and aniline, filtering the liquid in the flask while the liquid is hot after the distillation is finished, and filtering to obtain the aniline tar. The filter cake is an aniline catalyst crude product, eluting with a mixed solvent, and drying to obtain the recovered catalyst. According to the method, aniline is separated from tar at a low temperature, a catalyst is efficiently recovered by using a filtering and mixed solvent elution method, comprehensive utilization of aniline tar is realized, and the method has good economic benefits. 本发明涉及一种高效回收苯胺焦油的方法，采用共沸蒸馏和过滤回收焦油中苯胺和催化剂，具体操作如下：将一定量的苯胺焦油和共沸溶剂加至蒸馏瓶中，蒸馏出的气相组分冷凝后分出水相和苯胺，蒸馏结束后将烧瓶内液体趁热过滤，滤饼为苯胺催化剂粗