| abstract |
Disclosed is a method for recovering phenol and acetone from the cracking reaction product of bisphenol-A residue, by which economic feasibility and efficiency may be improved by utilizing a phenol/acetone purification process used for preparing bisphenol-A. The method for recovering phenol and acetone from the cracking reaction product of bisphenol-A residue includes (a) a step of cracking cumene hydro peroxide prepared by an oxidation reaction of cumene, and separating phenol and acetone; (b) a step of separating bisphenol-A prepared by reacting the separated phenol and acetone, and cracking a purge stream including unseparated bisphenol-A, or a further concentrated purge stream by discharging and recovering a portion of or entire phenol in an aqueous alkaline solution; and (C) a step of separating phenol and acetone by feeding the reaction product by the cracking reaction to a separation process of phenol and acetone, wherein step (a) and step (C) are conducted at the same time. |