Grading type different-weight activation device and method

The invention relates to a grading type different reactivation device and method, and belongs to the field of activation of organic carbide. The device comprises a different-weight activation furnace, a steam generator and a combustor, an activated carbon finished product blanking groove is formed in the different-weight activation furnace and connected with an activated carbon finished product bin, a high-temperature-resistant air distribution plate is arranged at the furnace bottom, high-temperature-resistant aluminum oxide balls are laid on the high-temperature-resistant air distribution plate, and the top of the different-weight activation furnace is connected with the combustor through the steam generator. An air blower is arranged between the steam generator and the combustor, the combustor is connected with the bottom of the different-weight activation furnace through a flue, the steam generator is connected with the bottom of the different-weight activation furnace through a steam pipe and the flue, t