Method for separating phenol-containing organic substances from m-phenylenediamine acidic hydrolysate

The invention discloses a method for separating phenol-containing organic substances from an m-phenylenediamine acidic hydrolysate, which comprises the following steps: (1) carrying out primary extraction on the m-phenylenediamine acidic hydrolysate with an organic solvent A to obtain a primary extraction organic phase and a primary extraction water phase, and distilling the primary extraction organic phase to obtain a resorcin crude product; (2) regulating the pH value of the primary extraction water phase obtained in the step (1) to 7-8, carrying out secondary extraction with an organic solvent B, and separating a secondary extraction water phase from a secondary extraction organic phase; and (3) adsorbing the secondary extraction water phase separated in the step (2) with activated carbon to carry out decolorization, filtering, removing the filter cake, concentrating the filtrate, and recrystallizing to obtain the inorganic salt. The invention enhances the comprehensive utilization ratio of the phenol-containing material and the yield of the product, lowers the difficulty for the subsequent product separation and refinement, implements convenient separation of phenol-containing organic substances, and has obvious practicality, economic benefit and environmental benefit.