PROBLEM TO BE SOLVED: To obtain a refined bisphenol A by removing phenol from a crude bisphenol A containing phenol.
SOLUTION: The method for refining bisphenol A containing phenol comprises a first step for feeding the crude melted bisphenol A containing phenol to a flash evaporator and separating the crude melted bisphenol A into a vapor phase composed of phenol and a liquid phase composed of bisphenol A and residual phenol and a second step for heating the liquid phase obtained in the first step with a thin film type evaporator and separating the liquid phase into a liquid phase composed of phenol and a liquid phase composed of bisphenol A and residual phenol in which the bisphenol A is concentrated. In the method, a part of the liquid phase obtained in the second step is recycled to the first step and fed to the flash evaporator together with the crude melted bisphenol A.
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