PROCESS FOR TREATING AN ADSORBENT MATERIAL IN THE FORM OF PARTICLES LOADED WITH AT LEAST TWO VOLATILE COMPOUNDS OF DIFFERING THERMAL STABILITY

摘要

Calcination of one of the volatile compounds is brought about in a first contacting column, in which the material is driven and put into suspension by an oxidizing gas stream, while being brought therein to a sufficiently high temperature, and the gaseous products desorbed in this first column are re-adsorbed by cooling in a second contacting column. This process applies principally to the regeneration of particles of alumina which have absorbed tars and compounds containing fluorine.