A PROCESS FOR PREPARING ACTIVATED CARBON FROM URBAN WASTE

摘要

A process for the preparation of active carbon from urban waste. The waste i s first stored to remove foreign materials and the size of the waste particles is reduced. The waste is dried under anaerobic conditions at a temperature range of 100 ~C - 150 ~C and partially pyrolysed at a temperature of about 1 40 ~C - 400 ~C. The obtained product is granulated and the granules are carbonized under anaerobic conditions at a temperature of about 120 ~C - 500 ~C. The carbonized granules are activated in the presence of steam and combustion gases at 750 ~C - 900 ~C. Finally, the activated granules are purified by rinsing in an aqueous HCl solution, and subsequently drying the activated carbon.