Method of adsorption by activated charcoal in a lower fluidized bed and upper fixed bed

摘要

The improved adsorption device comprises two superposed beds of solid adsorbent in which, during the adsorption step, the times of flow of fluid phase to be passed through the first or lower bed fluidized or semi- fluidized and the second or upper bed fixed or expanded are respectively in an approximate ratio of 1:10, the sections of said first and second beds (e.g.) of substantially cylindrical shape) being in a ratio of about 1:10.