| 摘要 |
PURPOSE:To regenerate activated carbon powder for desulfurization by adding water and oil to activated carbon powder contg. dust after desulfurization, by molding the active carbon after being removed the dust, with a binder and thereafter by heating. CONSTITUTION:The activated carbon is aggregated with oil component by adding circulating water to the powder 1 generated in a desulfurization equipment to make an aq. slurry, by adding tar from a oil component-adding tank 14 thereto and by strongly stirring with an impeller in a mixing and stirring machine 2. The aggregated activated carbon powder is sent to a washer 3 together with the slurry contg. dust powder, and poured with washing water from above a vibrating screen 15. Thereby, the aggregated activated carbon powder is left on the vibrating screen 15, and the dust is sent to a thickener 4 by washing away and discharged from the system as precipitated dust 5. The aggregated activated carbon powder is removed the water attached on the surface thereof with a centrifugal dehydrator 6, introduced to a kneader 7 and sufficiently kneaded with the binder and, as occasion demands, coal powder. The kneaded mixture is molded with an extruder 8 and then, heated under a gas atmosphere mixing nitrogen gas with steam in an electric heating furnace to obtain firm activated carbon. |
