Method for preparing dibasic acid from oxidation byproduct X oil of cyclohexane

The invention discloses a method for preparing dibasic acid from an oxidation byproduct X oil of cyclohexane. The method comprises the following steps: 1) taking X oil and performing separation by distillation to obtain a light component; 2) mixing the light component obtained in the step 1) with cyclohexanol or cyclohexanone or a mixture of cyclohexanol and cyclohexanone to obtain a mixture material; and 3) oxidizing the mixture material obtained in the step 2) to obtain the dibasic acid. A dibasic acid product prepared by the method has good quality and high yield, the method has the advantages of short process flow, convenience in operation, high practicability and convenience for industrialized application, the utilization ratio of the X oil can reach 60% or above, and the method effectively improves the utilization value of the X oil, reduces environmental pollution and realizes changing wastes into valuables. 种利用环己烷氧化副产品X油制备二元酸的方法，具有以下步骤：1)取X油，经蒸馏分离得到轻组分；2)步骤1)得到的轻组分，与环己醇或环己酮或环己醇、环己酮混合物混合，得到混合物料；3)步骤2)得