PROCESS FOR THE SIMULTANEOUS REMOVAL OF ISOBUTANAL AND ETHANOL FROM OLEFINIC FILLERS BY ADSORPTION ON A MATERIAL BASED ON POROUS REFRACTORY OXIDE

摘要

The present invention relates to a process for purifying an olefinic feed comprising olefins having 4 carbon atoms and impurities including isobutanal, ethanol and acetone, said process comprising a pre-treatment, comprising a step of elimination of acetone and optionally a step of removing water present in said olefinic feed, and a step of simultaneous removal of isobutanal and ethanol, by passing the feedstock from the pre-treatment on at least one fixed bed of at least one adsorbent comprising at least one porous refractory oxide material, optionally impregnated with one or more alkaline or alkaline earth cations; said step of simultaneous removal of isobutanal and ethanol operating at a temperature between 0 and 200 ° C, at a pressure of 0.1 to 10 MPa and with a hourly volume velocity (VVH) of the load on the fixed bed between 0.1 and 10 h-1.