System and method of producing bisphenol-A (BPA) using two stage crystallization

摘要

A system and method are provided wherein the phase equilibrium of a system comprised of Phenol, Bisphenol-A and a solvent mixture comprising Acetone and Water is selectively controlled such that either crystalline Bisphenol-A, or an adduct of Bisphenol-A and Phenol is crystallized from the product solution. The present invention provides for the recovery of pure Bisphenol-A (BPA) by direct crystallization from solution.