Activated carbon and production thereof

摘要

The process of producing activated carbon includes steps of: combusting scrap tires containing metal wire at 400 DEG C to 900 DEG C under the presence of oxygen, carbon dioxide and water vapor; reheating the generated combustible gases up to 800 DEG C to 900 DEG C by adding a further fuel; causing the exhaust gas to heat-exchange with a water pipe boiler so that the temperature of the exhaust gas decreases to between 180 DEG C and 250 DEG C; and introducing the exhaust having a temperature of 180 DEG C to 250 DEG C into an electric dust collector so as to collect activated carbon. The particle size of the thus obtained motivated carbon is distributed substantially in a range of 90 to 110 mesh and the CEC (cation exchange capacity) of the activated carbon falls within 30 to 40. The apparatus for producing it comprises an ash collecting room, the walls of which are constructed of a castable structure, a dry type dust collector of the inertial separation type (19) connected to an exhaust gas tube disposed in the rear portion of the furnace tubes inside the upper water chamber, an air blower connected to the lower combustion chamber and through a valve means with a tubular body for supplying water spray, and an electric dust collector between the exhaust gas tube and a chimney.