| 摘要 |
Device ( 1 ) for removing mercury from mercury-containing residues ( 6 ), comprising a gastight screw ( 2 ) conveyor provided with an inlet ( 5 ) for mercury-containing residues ( 6 ), first heating means for heating admitted mercury-containing residues and causing mercury to evaporate, an outlet conduit ( 7 ) for mercury vapour-containing gas and an outlet channel ( 10 ) for mercury-free residues, which device ( 1 ) is provided with pump means ( 16 ) for applying an underpressure in the screw conveyor ( 2 ) and discharging mercury vapour-containing gas therefrom, and with a distillation column ( 17 ) provided with cooling means ( 18, 19 ) to cause condensation of mercury vapour from the mercury vapour-containing gas discharged with the pump means ( 16 ), and a method for removing mercury from mercury-containing residues ( 16 ) using this device.
|
