PROCESS OF SEPARATION OF GLYOXYLIC ACID FROM AN AQUEOUS REACTION MEDIUM CONTAINING GLYOXYLIC ACID AND HYDROCHLORIC ACID

摘要

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