Process for the separation of a mixture of benzyl chloride, benzyl alcohol, dibenzyl ether and aqueous hydrochloric acid
AssigneeBayer Aktiengesellschaft
InventorsHans-Josef Buysch, Ursula Jansen, Pieter Ooms, Erhard-Gunther Hoffmann, Bernd-Ulrich Schenke
Life of this patent
Estimating the term…
Abstract
A process for the separation of a mixture which contains benzyl chloride, benzyl alcohol, dibenzyl ether and aqueous hydrochloric acid, wherein said mixture is continuously introduced via a side-feed into a distillation column from which aqueous hydrochloric acid and benzyl chloride are continuously taken off as overhead product, benzyl alcohol and dibenzyl ether are continuously taken off as bottom product, thereby the formation of dibenzyl ether is reduced or virtually prevented.
Claims12
Process for the separation of a mixture which contains benzyl chloride, benzyl alcohol, dibenzyl ether and aqueous hydrochloric acid, which comprises feeding said mixture via a side-feed to a continuously operating distillation column having a stripping section and enrichment section, operated at a pressure of 1-950 mbar at the top of the column, withdrawing a mixture of benzyl chloride and aqueous hydrochloric acid from the top of the distillation column and withdrawing a mixture of benzyl alcohol and dibenzyl ether from the bottom of the column.
Dependencies are inferred from the claim text.