| 摘要 |
An active carbon production system by which the drying, carbonization and activation steps in the production of active carbon can be made to proceed through efficient heating of a woody material or a carbonization product thereof and which can reduce the environmental load associated with the production of active carbon. In this system, the step for drying a woody material is conducted by heating with saturated steam having a proper temperature, and then the initial carbonization step for carbonizing the woody material is conducted by heating with superheated steam. Therefore, the heating of the woody material can be conducted through efficient heat transfer with less heat loss. Further, no gas that contains a harmful component is discharged from a drying unit (10) or a first carbonization unit (21) during the heating, so that little bad influence is exerted on the environment. Further, the system can efficiently convert woody waste into usable active carbon and thus achieves good utilization of usable materials contained in the waste and reduction in the quantity of waste, thus minimizing the influence on the environment. |
