Adipic acid byproduct mixed binary acid purification method, product and application

The invention discloses an adipic acid byproduct mixed binary acid purification method which includes the steps: 1) taking C4-6 mixed binary acid crude products, mixing the crude products with water,dissolving the crude products, cooling mixture to 10-20 DEG C and recrystallizing and filtering the mixture to obtain wet crystals; 2) dissolving the wet crystals in the step 1) in the water to obtainsolution; 3) performing first column chromatography on the solution in the step 2) to obtain discoloration effluent; 4) performing second column chromatography on the discoloration effluent in the step 3) to obtain deionized effluent; 5) concentrating, melting and slicing the deionized effluent obtained in the step 4) to obtain C4-6 mixed binary acid products. The purification method has the advantages of short technological process, convenience in operation and industrial application, strong practicability and the like, the recovery rate of C4-6 mixed binary acid reaches 95% or more, the content of metal ions in the