Method for reactivating catalysts used for removing nitrogen oxides with steam

摘要

A method for reactivating catalysts which comprises the steps of: jetting dry steam into a reactor which is charged with the catalysts deteriorated in performance, in order to remove dust adhering to and accumulating on the surfaces of the catalysts; spraying wet steam of 0.4 or less in wetness thereinto to elute and remove water-soluble poisonous materials accumulated inside the catalysts; and drying the catalysts with the dry steam.