Patent ID: 9573869
Date: 2017-02-21
CPC Classifications: B01J,C07B,C07C

Claim:
1. A bisphenol A preparing apparatus comprising: a main reactor that discharges a reaction product of a reaction between phenol and acetone through a reaction product stream; a flash reactor that separates the reaction product stream into a bisphenol A concentration stream and a phenol concentration stream; a bisphenol A purification unit that separates the bisphenol A concentration stream into a bisphenol A purification stream and a mother liquid stream and discharges the separated mother liquid stream; a recovery reactor that discharges a recovered reaction product, which is obtained by additionally reacting the mother liquid stream separated in the bisphenol A purification unit, to the main reactor through a recovered reaction product stream; and a bypass line that is positioned between the recovery reactor and the main reactor and that introduces at least some of the separated mother liquid stream into the flash reactor.