A method of desulphurization of a flue gas comprising passing a flue gas to a plurality of adsorption beds each having an activated carbon layer packed therein thereby separating a sulphur oxide contained in the flue gas by adsorption of the sulphur oxide in the activated carbon; continuing the adsorption...http://www.google.fr/patents/US3939251?utm_source=gb-gplus-shareBrevet US3939251 - Regeneration method for gas treating apparatus
