METHOD FOR PREPARING ACIDIC CATION EXCHANGE RESIN FIXED BED FOR PRODUCING BISPHENOLS

摘要

A method for preparing an acidic cation exchange resin fixed bed for producing bisphenols, wherein an acidic cation exchange resin is partially neutralized homogeneously with a nitrogen-containing sulfur compound, characterized in that it comprises charging an acidic cation exchange resin into a reactor to form a fixed bed, charging an aqueous solution of an alkylsulfonic acid and an aqueous solution of the nitrogen-containing sulfur compound prior to the start of the reaction, and circulating the resulting solution. The method is free from the problem of the corrosion of equipment after the acidic cation exchange resin is partially neutralized homogeneously with a nitrogen-containing sulfur compound, and is advantageous in that an acid component can be removed with ease in the operation of washing with water and replacement with phenol.