Mass transfer into porous granules using stratified semifluidized beds

摘要

Mass transfer of components from gases or liquids into porous absorbent granular media is carried out by a method using a semifluidized bed in stratified condition. The absorbent medium is composed of both small and large granules. In the stratified bed, at least part of the small size granules are captivated in a packed upper section. The larger granules are primarily in a fluidized section below the packed section. The fluid being treated flows upwardly through the bed first contacting the larger granules in the fluidized section and then exiting through the smaller packed granules. With this arrangement, increased fluid volumes can be processed before breakthrough of the component being absorbed.