초록 ▼

An improved process and apparatus for the production and reactivation of activated carbon comprising the passing of a substrate through one or more zones defined by electrodes. Electrical energy passing through the bed of substrate creates heat that supports the devolatilization and activation of th

An improved process and apparatus for the production and reactivation of activated carbon comprising the passing of a substrate through one or more zones defined by electrodes. Electrical energy passing through the bed of substrate creates heat that supports the devolatilization and activation of the substrate. Steam, carbon dioxide, or an alternative gas can be used to support the activation process, while other zones can be filled with inert gas such as nitrogen to promote pyrolysis reactions. Preferably, these gases pass through the bed in a co-current downward flow with the carbon to prevent fluidization and arcing within the bed.

대표청구항 ▼

[ What is claimed is:] [1.] A reaction vessel which is capable of activating or reactivating a carbonaceous material, said vessel comprising:a housing;a means for introducing said carbonaceous material into said housing;at least one primary heating zone formed between a pair of upper electrodes, whe

[ What is claimed is:] [1.] A reaction vessel which is capable of activating or reactivating a carbonaceous material, said vessel comprising:a housing;a means for introducing said carbonaceous material into said housing;at least one primary heating zone formed between a pair of upper electrodes, wherein at least one upper electrode comprises an upper portion and a lower portion, said lower portion being formed of at least one side wall having an angle less than the angle of repose of said carbonaceous material, and wherein said carbonaceous material passing through said primary heating zone is resistively heated in a suitable atmosphere to accomplish activation or reactivation of said carbonaceous material; anda means for introducing an activation gas outside of said primary heating zone such that said activation gas traverses through said primary heating zone in a co-current direction with said carbonaceous material, thereby activating or reactivating said carbonaceous material.