PROCESS FOR SEPARATING GLYOXYLIC ACID FROM AN AQUEOUS REACTIONAL MEDIUM CONTAINING GLYOXYLIC ACID AND HYDROCHLORIC ACID

摘要

The invention relates to a process for separating glyoxylic acid from an aqueous reaction medium containing glyoxylic acid and hydrochloric acid, comprising a step of entrainment of the reaction medium with water vapor to countercurrent, in order to obtain, on the one hand, a gaseous phase containing volatile hydrochloric acid, and on the other hand, a liquid phase containing the purified glyoxylic acid.