Process for producing dichloropropanol

摘要

Process for producing dichloropropanol according to which glycerol is subjected to a reaction in a liquid reaction medium with a chlorinating agent comprising hydrogen chloride, wherein a continuous or periodic withdrawal of a fraction comprising at least water, dichloropropanol and hydrogen chloride is carried out, wherein said fraction is introduced into a distillation step and wherein the sum of materials fed to said distillation step has a hydrogen chloride concentration which is lower than the hydrogen chloride concentration in the binary azeotropic composition hydrogen chloride/water at the pressure of the distillation.